Reaction Process: COVID-19 Disease Map:699

Adenosine

C10H13N5O4 (267.0967)

Adenosine is a ribonucleoside composed of a molecule of adenine attached to a ribofuranose moiety via a beta-N(9)-glycosidic bond. It has a role as an anti-arrhythmia drug, a vasodilator agent, an analgesic, a human metabolite and a fundamental metabolite. It is a purines D-ribonucleoside and a member of adenosines. It is functionally related to an adenine. The structure of adenosine was first described in 1931, though the vasodilating effects were not described in literature until the 1940s. Adenosine is indicated as an adjunct to thallium-201 in myocardial perfusion scintigraphy, though it is rarely used in this indication, having largely been replaced by [dipyridamole] and [regadenson]. Adenosine is also indicated in the treatment of supraventricular tachycardia. Adenosine was granted FDA approval on 30 October 1989. Adenosine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Adenosine is an Adenosine Receptor Agonist. The mechanism of action of adenosine is as an Adenosine Receptor Agonist. Adenosine is a natural product found in Smilax bracteata, Mikania laevigata, and other organisms with data available. Adenosine is a ribonucleoside comprised of adenine bound to ribose, with vasodilatory, antiarrhythmic and analgesic activities. Phosphorylated forms of adenosine play roles in cellular energy transfer, signal transduction and the synthesis of RNA. Adenosine is a nucleoside that is composed of adenine and d-ribose. Adenosine or adenosine derivatives play many important biological roles in addition to being components of DNA and RNA. For instance, adenosine plays an important role in energy transfer - as adenosine triphosphate (ATP) and adenosine diphosphate (ADP). It also plays a role in signal transduction as cyclic adenosine monophosphate, cAMP. Adenosine itself is both a neurotransmitter and potent vasodilator. When administered intravenously, adenosine causes transient heart block in the AV node. Because of the effects of adenosine on AV node-dependent supraventricular tachycardia, adenosine is considered a class V antiarrhythmic agent. Adenosine is a metabolite found in or produced by Saccharomyces cerevisiae. A nucleoside that is composed of adenine and d-ribose. Adenosine or adenosine derivatives play many important biological roles in addition to being components of DNA and RNA. Adenosine itself is a neurotransmitter. See also: Adenosine; Niacinamide (component of); Adenosine; Glycerin (component of); Adenosine; ginsenosides (component of) ... View More ... Adenosine is a nucleoside that is composed of adenine and D-ribose. Adenosine or adenosine derivatives play many important biological roles in addition to being components of DNA and RNA. For instance, adenosine plays an important role in energy transfer as adenosine triphosphate (ATP) and adenosine diphosphate (ADP). It also plays a role in signal transduction as cyclic adenosine monophosphate (cAMP). Adenosine itself is both a neurotransmitter and potent vasodilator. When administered intravenously adenosine causes transient heart block in the AV node. Due to the effects of adenosine on AV node-dependent supraventricular tachycardia, adenosine is considered a class V antiarrhythmic agent. Overdoses of adenosine intake (as a drug) can lead to several side effects including chest pain, feeling faint, shortness of breath, and tingling of the senses. Serious side effects include a worsening dysrhythmia and low blood pressure. When present in sufficiently high levels, adenosine can act as an immunotoxin and a metabotoxin. An immunotoxin disrupts, limits the function, or destroys immune cells. A metabotoxin is an endogenous metabolite that causes adverse health effects at chronically high levels. Chronically high levels of adenosine are associated with adenosine deaminase deficiency. Adenosine is a precursor to deoxyadenosine, which is a precursor to dATP. A buildup of dATP in cells inhibits ribonucleotide reductase and prevents DNA synthesis, so cells are unable to divide. Since developing T cells and B cells are some of the most mitotically active cells, they are unable to divide and propagate to respond to immune challenges. High levels of deoxyadenosine also lead to an increase in S-adenosylhomocysteine, which is toxic to immature lymphocytes. Adenosine is a nucleoside composed of a molecule of adenine attached to a ribose sugar molecule (ribofuranose) moiety via a beta-N9-glycosidic bond. [Wikipedia]. Adenosine is found in many foods, some of which are borage, japanese persimmon, nuts, and barley. COVID info from PDB, Protein Data Bank, COVID-19 Disease Map, clinicaltrial, clinicaltrials, clinical trial, clinical trials A ribonucleoside composed of a molecule of adenine attached to a ribofuranose moiety via a beta-N(9)-glycosidic bond. Adenosine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=58-61-7 (retrieved 2024-06-29) (CAS RN: 58-61-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Adenosine (Adenine riboside), a ubiquitous endogenous autacoid, acts through the enrollment of four G protein-coupled receptors: A1, A2A, A2B, and A3. Adenosine affects almost all aspects of cellular physiology, including neuronal activity, vascular function, platelet aggregation, and blood cell regulation[1][2]. Adenosine (Adenine riboside), a ubiquitous endogenous autacoid, acts through the enrollment of four G protein-coupled receptors: A1, A2A, A2B, and A3. Adenosine affects almost all aspects of cellular physiology, including neuronal activity, vascular function, platelet aggregation, and blood cell regulation[1][2]. Adenosine (Adenine riboside), a ubiquitous endogenous autacoid, acts through the enrollment of four G protein-coupled receptors: A1, A2A, A2B, and A3. Adenosine affects almost all aspects of cellular physiology, including neuronal activity, vascular function, platelet aggregation, and blood cell regulation[1][2].

Coumarin

C9H6O2 (146.0368)

Coumarin appears as colorless crystals, flakes or colorless to white powder with a pleasant fragrant vanilla odor and a bitter aromatic burning taste. (NTP, 1992) Coumarin is a chromenone having the keto group located at the 2-position. It has a role as a fluorescent dye, a plant metabolite and a human metabolite. Coumarin is a natural product found in Eupatorium cannabinum, Eupatorium japonicum, and other organisms with data available. Coumarin is o hydroxycinnamic acid. Pleasant smelling compound found in many plants and released on wilting. Has anticoagulant activity by competing with Vitamin K. Coumarin is a chemical compound/poison found in many plants, notably in high concentration in the tonka bean, woodruff, and bison grass. It has a sweet scent, readily recognised as the scent of newly-mown hay. It has clinical value as the precursor for several anticoagulants, notably warfarin. --Wikipedia. Coumarins, as a class, are comprised of numerous naturally occurring benzo-alpha-pyrone compounds with important and diverse physiological activities. The parent compound, coumarin, occurs naturally in many plants, natural spices, and foods such as tonka bean, cassia (bastard cinnamon or Chinese cinnamon), cinnamon, melilot (sweet clover), green tea, peppermint, celery, bilberry, lavender, honey (derived both from sweet clover and lavender), and carrots, as well as in beer, tobacco, wine, and other foodstuffs. Coumarin concentrations in these plants, spices, and foods range from <1 mg/kg in celery, 7000 mg/kg in cinnamon, and up to 87,000 mg/kg in cassia. An estimate of human exposure to coumarin from the diet has been calculated to be 0.02 mg/kg/day. Coumarin is used as an additive in perfumes and fragranced consumer products at concentrations ranging from <0.5\\\\% to 6.4\\\\% in fine fragrances to <0.01\\\\% in detergents. An estimate for systemic exposure of humans from the use of fragranced cosmetic products is 0.04 mg/kg BW/day, assuming complete dermal penetration. The use of coumarin as a food additive was banned by the FDA in 1954 based on reports of hepatotoxicity in rats. Due to its potential hepatotoxic effects in humans, the European Commission restricted coumarin from naturals as a direct food additive to 2 mg/kg food/day, with exceptions granting higher levels for alcoholic beverages, caramel, chewing gum, and certain traditional foods. In addition to human exposure to coumarin from dietary sources and consumer products, coumarin is also used clinically as an antineoplastic and for the treatment of lymphedema and venous insufficiency. Exposure ranges from 11 mg/day for consumption of natural food ingredients to 7 g/day following clinical administration. Although adverse effects in humans following coumarin exposure are rare, and only associated with clinical doses, recent evidence indicates coumarin causes liver tumors in rats and mice and Clara cell toxicity and lung tumors in mice. The multiple effects as well as the ongoing human exposure to coumarin have resulted in a significant research effort focused on understanding the mechanism of coumarin induced toxicity/carcinogenicity and its human relevance. These investigations have revealed significant species differences in coumarin metabolism and toxicity such that the mechanism of coumarin induced effects in rodents, and the relevance of these findings for the safety assessment of coumarin exposure in humans are now better understood. In October 2004, the European Food Safety Authority (EFSA, 2004) reviewed coumarin to establish a tolerable daily intake (TDI) in foods. EFSA issued an opinion indicating that coumarin is not genotoxic, and that a threshold approach to safety assessment was most appropriate. EFSA recommended a TDI of 0 to 0.1 mg/kg BW/day. Including dietary contributions, the total human exposure is estimated to be 0.06 mg/kg/day. As a pharmaceutical, coumarin has been used in diverse applications with a wide variety of dosing regimens. Unlike coumadin and ... Coumarin belongs to the class of chemicals known as chromenones. Specifically it is a chromenone having the keto group located at the 2-position. A chromenone is a benzene molecule with two adjacent hydrogen atoms replaced by a lactone-like chain forming a second six-membered heterocycle that shares two carbons with the benzene ring. Coumarin is also described as a benzopyrone and is considered as a lactone. Coumarin is a colorless crystalline solid with a bitter taste and sweet odor resembling the scent of vanilla or the scent of newly-mowed or recently cut hay. It is a chemical poison found in many plants where it may serve as a chemical defense against predators. Coumarin occurs naturally in many plants and foods such as the tonka bean, woodruff, bison grass, cassia (bastard cinnamon or Chinese cinnamon), cinnamon, melilot (sweet clover), green tea, peppermint, celery, bilberry, lavender, honey (derived both from sweet clover and lavender), and carrots, as well as in beer, tobacco, wine, and other foodstuffs. Coumarin concentrations in these plants, spices, and foods range from <1 mg/kg in celery, to 7000 mg/kg in cinnamon, and up to 87,000 mg/kg in cassia. An estimate of human exposure to coumarin from the diet has been calculated to be 0.02 mg/kg/day. Coumarin is used as an additive in perfumes and fragranced consumer products at concentrations ranging from <0.5\\\\% To 6.4\\\\% In fine fragrances to <0.01\\\\% In detergents. An estimate for systemic exposure of humans from the use of fragranced cosmetic products is 0.04 mg/kg BW/day, assuming complete dermal penetration. The use of coumarin as a food additive was banned by the FDA in 1954 based on reports of hepatotoxicity in rats. It has clinical value as the precursor for several anticoagulants, notably warfarin. Coumarins, as a class, are comprised of numerous naturally occurring benzo-alpha-pyrone compounds with important and diverse physiological activities. Due to its potential hepatotoxic effects in humans, the European Commission restricted coumarin from naturals as a direct food additive to 2 mg/kg food/day, with exceptions granting higher levels for alcoholic beverages, caramel, chewing gum, and certain traditional foods. In addition to human exposure to coumarin from dietary sources and consumer products, coumarin is also used clinically as an antineoplastic and for the treatment of lymphedema and venous insufficiency. Exposure ranges from 11 mg/day for consumption of natural food ingredients to 7 g/day following clinical administration. Although adverse effects in humans following coumarin exposure are rare, and only associated with clinical doses, recent evidence indicates coumarin causes liver tumors in rats and mice and Clara cell toxicity and lung tumors in mice. The multiple effects as well as the ongoing human exposure to coumarin have resulted in a significant research effort focused on understanding the mechanism of coumarin induced toxicity/carcinogenicity and its human relevance. These investigations have revealed significant species differences in coumarin metabolism and toxicity such that the mechanism of coumarin induced effects in rodents, and the relevance of these findings for the safety assessment of coumarin exposure in humans are now better understood. In October 2004, the European Food Safety Authority (EFSA, 2004) reviewed coumarin to establish a tolerable daily intake (TDI) in foods. EFSA issued an opinion indicating that coumarin is not genotoxic, and that a threshold approach to safety assessment was most appropriate. EFSA recommended a TDI of 0 to 0.1 Mg/kg BW/day. Including dietary contributions, the total human exposure is estimated to be 0.06 Mg/kg/day. As a pharmaceutical, coumarin has been used in diverse applications with a wide variety of dosing regimens. Unlike coumadin and other coumarin derivatives, coumarin has no anti-coagulant activity. However, at low doses (typically 7 to 10 mg/day), coumarin has been used as a venotonic to promote... C78275 - Agent Affecting Blood or Body Fluid > C263 - Anticoagulant Agent A chromenone having the keto group located at the 2-position. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS [Raw Data] CB013_Coumarin_pos_20eV_CB000008.txt [Raw Data] CB013_Coumarin_pos_30eV_CB000008.txt [Raw Data] CB013_Coumarin_pos_10eV_CB000008.txt [Raw Data] CB013_Coumarin_pos_50eV_CB000008.txt [Raw Data] CB013_Coumarin_pos_40eV_CB000008.txt Coumarin is the primary bioactive ingredient in Radix Glehniae, named Beishashen in China, which possesses many pharmacological activities, including anticancer, anti-inflammation and antivirus activities. Coumarin is the primary bioactive ingredient in Radix Glehniae, named Beishashen in China, which possesses many pharmacological activities, including anticancer, anti-inflammation and antivirus activities.

Adenine

C5H5N5 (135.0545)

Adenine is the parent compound of the 6-aminopurines, composed of a purine having an amino group at C-6. It has a role as a human metabolite, a Daphnia magna metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is a purine nucleobase and a member of 6-aminopurines. It derives from a hydride of a 9H-purine. A purine base and a fundamental unit of adenine nucleotides. Adenine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Adenine is a natural product found in Fritillaria cirrhosa, Annona purpurea, and other organisms with data available. Adenine is a purine nucleobase with an amine group attached to the carbon at position 6. Adenine is the precursor for adenosine and deoxyadenosine nucleosides. Adenine is a purine base. Adenine is found in both DNA and RNA. Adenine is a fundamental component of adenine nucleotides. Adenine forms adenosine, a nucleoside, when attached to ribose, and deoxyadenosine when attached to deoxyribose; it forms adenosine triphosphate (ATP), a nucleotide, when three phosphate groups are added to adenosine. Adenosine triphosphate is used in cellular metabolism as one of the basic methods of transferring chemical energy between chemical reactions. Purine inborn errors of metabolism (IEM) are serious hereditary disorders, which should be suspected in any case of neonatal fitting, failure to thrive, recurrent infections, neurological deficit, renal disease, self-mutilation and other manifestations. Investigation usually starts with uric acid (UA) determination in urine and plasma. (OMIM 300322, 229600, 603027, 232400, 232600, 232800, 201450, 220150, 232200, 162000, 164050, 278300). (A3372, A3373). Adenine is a metabolite found in or produced by Saccharomyces cerevisiae. A purine base and a fundamental unit of ADENINE NUCLEOTIDES. See also: adenine; dextrose, unspecified form (component of) ... View More ... Adenine is a purine base. Adenine is found in both DNA and RNA. Adenine is a fundamental component of adenine nucleotides. Adenine forms adenosine, a nucleoside, when attached to ribose, and deoxyadenosine when attached to deoxyribose; it forms adenosine triphosphate (ATP), a nucleotide, when three phosphate groups are added to adenosine. Adenosine triphosphate is used in cellular metabolism as one of the basic methods of transferring chemical energy between chemical reactions. Purine inborn errors of metabolism (IEM) are serious hereditary disorders, which should be suspected in any case of neonatal fitting, failure to thrive, recurrent infections, neurological deficit, renal disease, self-mutilation and other manifestations. Investigation usually starts with uric acid (UA) determination in urine and plasma. (OMIM 300322, 229600, 603027, 232400, 232600, 232800, 201450, 220150, 232200, 162000, 164050, 278300). (PMID: 17052198, 17520339). Widespread throughout animal and plant tissue, purine components of DNA, RNA, and coenzymes. Vitamin The parent compound of the 6-aminopurines, composed of a purine having an amino group at C-6. Adenine (/ˈædɪnɪn/) (symbol A or Ade) is a purine nucleobase. It is one of the four nucleobases in the nucleic acids of DNA, the other three being guanine (G), cytosine (C), and thymine (T). Adenine derivatives have various roles in biochemistry including cellular respiration, in the form of both the energy-rich adenosine triphosphate (ATP) and the cofactors nicotinamide adenine dinucleotide (NAD), flavin adenine dinucleotide (FAD) and Coenzyme A. It also has functions in protein synthesis and as a chemical component of DNA and RNA.[2] The shape of adenine is complementary to either thymine in DNA or uracil in RNA. The adjacent image shows pure adenine, as an independent molecule. When connected into DNA, a covalent bond is formed between deoxyribose sugar and the bottom left nitrogen (thereby removing the existing hydrogen atom). The remaining structure is called an adenine residue, as part of a larger molecule. Adenosine is adenine reacted with ribose, as used in RNA and ATP; Deoxyadenosine is adenine attached to deoxyribose, as used to form DNA. Adenine forms several tautomers, compounds that can be rapidly interconverted and are often considered equivalent. However, in isolated conditions, i.e. in an inert gas matrix and in the gas phase, mainly the 9H-adenine tautomer is found.[3][4] Purine metabolism involves the formation of adenine and guanine. Both adenine and guanine are derived from the nucleotide inosine monophosphate (IMP), which in turn is synthesized from a pre-existing ribose phosphate through a complex pathway using atoms from the amino acids glycine, glutamine, and aspartic acid, as well as the coenzyme tetrahydrofolate. Adenine (6-Aminopurine), a purine, is one of the four nucleobases in the nucleic acid of DNA. Adenine acts as a chemical component of DNA and RNA. Adenine also plays an important role in biochemistry involved in cellular respiration, the form of both ATP and the cofactors (NAD and FAD), and protein synthesis[1][2][3]. Adenine (6-Aminopurine), a purine, is one of the four nucleobases in the nucleic acid of DNA. Adenine acts as a chemical component of DNA and RNA. Adenine also plays an important role in biochemistry involved in cellular respiration, the form of both ATP and the cofactors (NAD and FAD), and protein synthesis[1][2][3]. Adenine (6-Aminopurine), a purine, is one of the four nucleobases in the nucleic acid of DNA. Adenine acts as a chemical component of DNA and RNA. Adenine also plays an important role in biochemistry involved in cellular respiration, the form of both ATP and the cofactors (NAD and FAD), and protein synthesis[1][2][3].

Niacinamide

C6H6N2O (122.048)

Nicotinamide is a white powder. (NTP, 1992) Nicotinamide is a pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group. It has a role as an EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor, a metabolite, a cofactor, an antioxidant, a neuroprotective agent, an EC 3.5.1.98 (histone deacetylase) inhibitor, an anti-inflammatory agent, a Sir2 inhibitor, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite, a mouse metabolite, a human urinary metabolite and a geroprotector. It is a vitamin B3, a pyridinecarboxamide and a pyridine alkaloid. It is functionally related to a nicotinic acid. An important compound functioning as a component of the coenzyme NAD. Its primary significance is in the prevention and/or cure of blacktongue and pellagra. Most animals cannot manufacture this compound in amounts sufficient to prevent nutritional deficiency and it therefore must be supplemented through dietary intake. Niacinamide is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Nicotinamide is a natural product found in Mus musculus, Euonymus grandiflorus, and other organisms with data available. Niacinamide is the active form of vitamin B3 and a component of the coenzyme nicotinamide adenine dinucleotide (NAD). Niacinamide acts as a chemo- and radio-sensitizing agent by enhancing tumor blood flow, thereby reducing tumor hypoxia. This agent also inhibits poly(ADP-ribose) polymerases, enzymes involved in the rejoining of DNA strand breaks induced by radiation or chemotherapy. Nicotinamide is a uremic toxin. Uremic toxins can be subdivided into three major groups based upon their chemical and physical characteristics: 1) small, water-soluble, non-protein-bound compounds, such as urea; 2) small, lipid-soluble and/or protein-bound compounds, such as the phenols and 3) larger so-called middle-molecules, such as beta2-microglobulin. Chronic exposure of uremic toxins can lead to a number of conditions including renal damage, chronic kidney disease and cardiovascular disease. Niacinamide or vitamin B3 is an important compound functioning as a component of the coenzyme NAD. Its primary significance is in the prevention and/or cure of blacktongue and pellagra. Most animals cannot manufacture this compound in amounts sufficient to prevent nutritional deficiency and it therefore must be supplemented through dietary intake. Niacinamide is used to increase the effect of radiation therapy on tumor cells. Niacin (nicotinic acid) and niacinamide, while both labeled as vitamin B3 also have different applications. Niacinamide is useful in arthritis and early-onset type I diabetes while niacin is an effective reducer of high cholesterol levels. Niacinamide is a metabolite found in or produced by Saccharomyces cerevisiae. An important compound functioning as a component of the coenzyme NAD. Its primary significance is in the prevention and/or cure of blacktongue and PELLAGRA. Most animals cannot manufacture this compound in amounts sufficient to prevent nutritional deficiency and it therefore must be supplemented through dietary intake. See also: Adenosine; Niacinamide (component of); Dapsone; niacinamide (component of); Adenosine; Niacinamide; Titanium Dioxide (component of) ... View More ... Niacinamide, also known as nicotinamide (NAM), is a form of vitamin B3 found in food and used as a dietary supplement and medication. Niacinamide belongs to the class of organic compounds known as nicotinamides. These are heterocyclic aromatic compounds containing a pyridine ring substituted at position 3 by a carboxamide group. Its primary significance is in the prevention and/or cure of blacktongue and pellagra. The structure of nicotinamide consists of a pyridine ring to which a primary amide group is attached in the meta position. It is an amide of nicotinic acid. As an aromatic compound, it undergoes electrophilic substitution reactions and transformations of its two functional groups. Niacinamide and phosphoribosyl pyrophosphate can be converted into nicotinic acid mononucleotide and phosphate by the enzyme nicotinamide phosphoribosyltransferase. In humans, niacinamide is involved in the metabolic disorder called the nad+ signalling pathway (cancer). Niacinamide is an odorless tasting compound. Outside of the human body, niacinamide is found, on average, in the highest concentration within a few different foods, such as common sages, cow milk, and cocoa beans and in a lower concentration in common pea. Niacinamide has also been detected, but not quantified in several different foods, such as yardlong beans, roselles, apples, oyster mushrooms, and swiss chards. Niacinamide occurs in trace amounts mainly in meat, fish, nuts, and mushrooms, as well as to a lesser extent in some vegetables. It is commonly added to cereals and other foods. Many multivitamins contain 20–30 mg of vitamin B3 and it is also available in higher doses. Most animals cannot manufacture this compound in amounts sufficient to prevent nutritional deficiency and it therefore must be supplemented through dietary intake. COVID info from COVID-19 Disease Map, WikiPathways, PDB, Protein Data Bank, clinicaltrial, clinicaltrials, clinical trial, clinical trials A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group. Widespread in plants, e.g. rice, yeast and fungi. Dietary supplement, may be used in infant formulas Nicotinamide. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=98-92-0 (retrieved 2024-07-01) (CAS RN: 98-92-0). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Nicotinamide is a form of vitamin B3 or niacin. Nicotinamide Hydrochloride inhibits SIRT2 activity (IC50: 2 μM). Nicotinamide also inhibits SIRT1. Nicotinamide increases cellular NAD+, ATP, ROS levels. Nicotinamide inhibits tumor growth and improves survival. Nicotinamide also has anti-HBV activity[1][2][3][4]. Nicotinamide is a form of vitamin B3 or niacin. Nicotinamide Hydrochloride inhibits SIRT2 activity (IC50: 2 μM). Nicotinamide also inhibits SIRT1. Nicotinamide increases cellular NAD+, ATP, ROS levels. Nicotinamide inhibits tumor growth and improves survival. Nicotinamide also has anti-HBV activity[1][2][3][4]. Nicotinamide is a form of vitamin B3 or niacin. Nicotinamide Hydrochloride inhibits SIRT2 activity (IC50: 2 μM). Nicotinamide also inhibits SIRT1. Nicotinamide increases cellular NAD+, ATP, ROS levels. Nicotinamide inhibits tumor growth and improves survival. Nicotinamide also has anti-HBV activity[1][2][3][4].

Nicotinic acid

C6H5NO2 (123.032)

Nicotinic acid is an odorless white crystalline powder with a feebly acid taste. pH (saturated aqueous solution) 2.7. pH (1.3\\\\\% solution) 3-3.5. (NTP, 1992) Nicotinic acid is a pyridinemonocarboxylic acid that is pyridine in which the hydrogen at position 3 is replaced by a carboxy group. It has a role as an antidote, an antilipemic drug, a vasodilator agent, a metabolite, an EC 3.5.1.19 (nicotinamidase) inhibitor, an Escherichia coli metabolite, a mouse metabolite, a human urinary metabolite and a plant metabolite. It is a vitamin B3, a pyridinemonocarboxylic acid and a pyridine alkaloid. It is a conjugate acid of a nicotinate. Niacin is a B vitamin used to treat vitamin deficiencies as well as hyperlipidemia, dyslipidemia, hypertriglyceridemia, and to reduce the risk of myocardial infarctions. Nicotinic acid is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Niacin is a Nicotinic Acid. Niacin, also known as nicotinic acid and vitamin B3, is a water soluble, essential B vitamin that, when given in high doses, is effective in lowering low density lipoprotein (LDL) cholesterol and raising high density lipoprotein (HDL) cholesterol, which makes this agent of unique value in the therapy of dyslipidemia. Niacin can cause mild-to-moderate serum aminotransferase elevations and high doses and certain formulations of niacin have been linked to clinically apparent, acute liver injury which can be severe as well as fatal. Niacin is a water-soluble vitamin belonging to the vitamin B family, which occurs in many animal and plant tissues, with antihyperlipidemic activity. Niacin is converted to its active form niacinamide, which is a component of the coenzymes nicotinamide adenine dinucleotide (NAD) and its phosphate form, NADP. These coenzymes play an important role in tissue respiration and in glycogen, lipid, amino acid, protein, and purine metabolism. Although the exact mechanism of action by which niacin lowers cholesterol is not fully understood, it may act by inhibiting the synthesis of very low density lipoproteins (VLDL), inhibiting the release of free fatty acids from adipose tissue, increasing lipoprotein lipase activity, and reducing the hepatic synthesis of VLDL-C and LDL-C. Nicotinic acid, also known as niacin or vitamin B3, is a water-soluble vitamin whose derivatives such as NADH, NAD, NAD+, and NADP play essential roles in energy metabolism in the living cell and DNA repair. The designation vitamin B3 also includes the amide form, nicotinamide or niacinamide. Severe lack of niacin causes the deficiency disease pellagra, whereas a mild deficiency slows down the metabolism decreasing cold tolerance. The recommended daily allowance of niacin is 2-12 mg a day for children, 14 mg a day for women, 16 mg a day for men, and 18 mg a day for pregnant or breast-feeding women. It is found in various animal and plant tissues and has pellagra-curative, vasodilating, and antilipemic properties. The liver can synthesize niacin from the essential amino acid tryptophan (see below), but the synthesis is extremely slow and requires vitamin B6; 60 mg of tryptophan are required to make one milligram of niacin. Bacteria in the gut may also perform the conversion but are inefficient. A water-soluble vitamin of the B complex occurring in various animal and plant tissues. It is required by the body for the formation of coenzymes NAD and NADP. It has PELLAGRA-curative, vasodilating, and antilipemic properties. Nicotinic acid, also known as niacin or vitamin B3, is a water-soluble vitamin whose derivatives such as NADH, NAD, NAD+, and NADP play essential roles in energy metabolism in the living cell and DNA repair. The designation vitamin B3 also includes the amide form, nicotinamide or niacinamide. Severe lack of niacin causes the deficiency disease pellagra, whereas a mild deficiency slows down the metabolism decreasing cold tolerance. The recommended daily allowance of niacin is 2-12 mg a day for children, 14 mg a day for women, 16 mg a day for men, and 18 mg a day for pregnant or breast-feeding women. It is found in various animal and plant tissues and has pellagra-curative, vasodilating, and antilipemic properties. The liver can synthesize niacin from the essential amino acid tryptophan, but the synthesis is extremely slow and requires vitamin B6; 60 mg of tryptophan are required to make one milligram of niacin. Bacteria in the gut may also perform the conversion but are inefficient. Nicotinic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=59-67-6 (retrieved 2024-06-29) (CAS RN: 59-67-6). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Niacin (Vitamin B3) is an orally active water-soluble B3 vitamin that is an essential nutrient for humans. Niacin (Vitamin B3) plays a key role in energy metabolism, cell signaling cascades regulating gene expression and apoptosis. Niacin (Vitamin B3) is also used in the study of cardiovascular diseases[1][2]. Niacin (Vitamin B3) is an orally active water-soluble B3 vitamin that is an essential nutrient for humans. Niacin (Vitamin B3) plays a key role in energy metabolism, cell signaling cascades regulating gene expression and apoptosis. Niacin (Vitamin B3) is also used in the study of cardiovascular diseases[1][2].

Inosine

C10H12N4O5 (268.0808)

Inosine, also known as hypoxanthosine or inotin, belongs to the class of organic compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl moiety. Inosine is formed when hypoxanthine is attached to a ribose ring a beta-N9-glycosidic bond. Inosine is an intermediate in the degradation of purines and purine nucleosides to uric acid. Inosine is also an intermediate in the purine salvage pathway. Inosine occurs in the anticodon of certain transfer RNA molecules and is essential for proper translation of the genetic code in wobble base pairs. Inosine exists in all living species, ranging from bacteria to plants to humans. Inosine participates in a number of enzymatic reactions. In particular, inosine can be biosynthesized from inosinic acid through its interaction with the enzyme known as cytosolic purine 5-nucleotidase. In addition, inosine can be converted into hypoxanthine and ribose 1-phosphate through its interaction with the enzyme known as purine nucleoside phosphorylase. Altered levels of inosine have also been associated with purine nucleoside phosphorylase deficiency and xanthinuria type I, both of which are inborn errors of metabolism. Animal studies have suggested that inosine has neuroprotective properties. It has been proposed as a potential treatment for spinal cord injury (PMID: 16317421) and for administration after stroke, as inosine appears to induce axonal rewiring (PMID: 12084941). After ingestion, inosine is metabolized into uric acid, which has been found to be a natural antioxidant and peroxynitrite scavenger. As such, inosine may have potential benefits to patients with multiple sclerosis and Parkinson’s disease (PMID: 19425822). Inosine can also be produced by gut bacteria and appears to have a number of beneficial effects. Inosine, has been shown to activate peroxisome proliferator-activated receptor (PPAR)-gamma signaling in human colon epithelial cells. Furthermore, exogenous treatment of inosine has been found to protect against DSS-induced colitis in rodents by improving adenosine 2A receptor (A2AR)/PPAR-gamma-dependent mucosal barrier functions (PMID: 33820558). Microbiome-derived inosine has also been shown to modulate the response to checkpoint inhibitor immunotherapy in cancer models. In particular, decreased gut barrier function induced by immunotherapy increases systemic translocation of bacterially derived inosine and activates antitumor T cells. The effect of inosine is dependent on T cell expression of the adenosine A2A receptor and requires co-stimulation. Inosine appears to have other roles in non-mammalian system. For instance, it has been found to be an important feed stimulant by itself or in combination with certain amino acids in some species of farmed fish. For example, inosine and inosine-5-monophosphate have been reported as specific feeding stimulants for turbot fry, (Scophthalmus maximus) and Japanese amberjack. Inosine is a purine nucleoside in which hypoxanthine is attached to ribofuranose via a beta-N(9)-glycosidic bond. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is a purines D-ribonucleoside and a member of inosines. It is functionally related to a hypoxanthine and a ribofuranose. A purine nucleoside that has hypoxanthine linked by the N9 nitrogen to the C1 carbon of ribose. It is an intermediate in the degradation of purines and purine nucleosides to uric acid and in pathways of purine salvage. It also occurs in the anticodon of certain transfer RNA molecules. (Dorland, 28th ed) Inosine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Inosine is a natural product found in Fritillaria thunbergii, Cichorium endivia, and other organisms with data available. Inosine is a metabolite found in or produced by Saccharomyces cerevisiae. A purine nucleoside that has hypoxanthine linked by the N9 nitrogen to the C1 carbon of ribose. It is an intermediate in the degradation of purines and purine nucleosides to uric acid and in pathways of purine salvage. It also occurs in the anticodon of certain transfer RNA molecules. (Dorland, 28th ed) G - Genito urinary system and sex hormones > G01 - Gynecological antiinfectives and antiseptics > G01A - Antiinfectives and antiseptics, excl. combinations with corticosteroids D - Dermatologicals > D06 - Antibiotics and chemotherapeutics for dermatological use > D06B - Chemotherapeutics for topical use > D06BB - Antivirals A purine nucleoside in which hypoxanthine is attached to ribofuranose via a beta-N(9)-glycosidic bond. COVID info from COVID-19 Disease Map, clinicaltrial, clinicaltrials, clinical trial, clinical trials S - Sensory organs > S01 - Ophthalmologicals Present in meat extracts and sugar beet Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS [Spectral] Inosine (exact mass = 268.08077) and L-Methionine (exact mass = 149.05105) and Adenosine (exact mass = 267.09675) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Inosine (exact mass = 268.08077) and L-Tyrosine (exact mass = 181.07389) and Guanosine (exact mass = 283.09167) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Inosine (exact mass = 268.08077) and S-Adenosyl-L-homocysteine (exact mass = 384.12159) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Inosine (exact mass = 268.08077) and Guanosine (exact mass = 283.09167) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Acquisition and generation of the data is financially supported in part by CREST/JST. CONFIDENCE standard compound; INTERNAL_ID 110 KEIO_ID I003 Inosine is an endogenous purine nucleoside produced by catabolism of adenosine. Inosine has anti-inflammatory, antinociceptive, immunomodulatory and neuroprotective effects. Inosine is an agonist for adenosine A1 (A1R) and A2A (A2AR) receptors[1][2][3]. Inosine is an endogenous purine nucleoside produced by catabolism of adenosine. Inosine has anti-inflammatory, antinociceptive, immunomodulatory and neuroprotective effects. Inosine is an agonist for adenosine A1 (A1R) and A2A (A2AR) receptors[1][2][3]. Inosine is an endogenous purine nucleoside produced by catabolism of adenosine. Inosine has anti-inflammatory, antinociceptive, immunomodulatory and neuroprotective effects. Inosine is an agonist for adenosine A1 (A1R) and A2A (A2AR) receptors[1][2][3]. Inosine is an endogenous purine nucleoside produced by catabolism of adenosine. Inosine has anti-inflammatory, antinociceptive, immunomodulatory and neuroprotective effects. Inosine is an agonist for adenosine A1 (A1R) and A2A (A2AR) receptors[1][2][3].

Guanosine

C10H13N5O5 (283.0917)

Guanosine (G), also known as 2-amino-inosine, belongs to the class of organic compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl sugar moiety. Guanosine consists of a guanine base attached to a ribose (ribofuranose) ring via a beta-N9-glycosidic bond. Guanosine is a white, crystalline powder with no odor and mild saline taste. It is very soluble in acetic acid, and slightly soluble in water, but insoluble in ethanol, diethyl ether, benzene, and chloroform. Guanosine exists in all living species, ranging from bacteria to plants to humans. High levels of guanosine can be found in clovers, coffee plants, and the pollen of pines. It has been detected, but not quantified in, several different foods, such as leeks, garlic, chicory roots, green bell peppers, and black-eyed peas. Guanosine plays an important role in various biochemical processes including the synthesis of nucleic acids such as RNA and intracellular signal transduction (cGMP). The antiviral drug acyclovir, often used in herpes treatment, and the anti-HIV drug abacavir, are both structurally similar to guanosine. Guanosine can be phosphorylated to become guanosine monophosphate (GMP), cyclic guanosine monophosphate (cGMP), guanosine diphosphate (GDP), and guanosine triphosphate (GTP). In humans, guanosine is involved in intracellular signalling through the adenosine receptors A1R and A2AR (PMID: 31847113). Evidence from rodent and cell models has shown a number of important neurotrophic and neuroprotective effects of guanosine. In particular, it is effective in preventing deleterious consequences of seizures, spinal cord injury, pain, mood disorders and aging-related diseases, such as ischemia, Parkinson‚Äôs and Alzheimer‚Äôs diseases (PMID: 27699087). Studies with rodent models of Parkinson‚Äôs disease have shown that guanosine decreases neuronal apoptotic cell death and increases dopaminergic neurons at substantia nigra pars compacta, accompanied by an improvement of motor symptoms in Parkinson‚Äôs disease (i.e. a reduction of bradykinesia). Guanosine promotes neurite arborization, outgrowth, proliferation and differentiation. Systemic administration of guanosine for eight weeks (8 mg/kg) has been shown to stimulate neuroprogenitors proliferation in the subventricular zone (SVZ) in a mouse model of Parkinsonism (PMID: 27699087). The effect of guanosine treatment is accompanied by an increased number of fibroblast growth factor (FGF-2)-positive cells which is an important regulator of neuroprogenitor/stem cell proliferation, survival and differentiation (PMID: 27699087). Guanosine prevents reactive oxygen species (ROS) generation and cell death in hippocampal slices subjected to the oxygen/glucose deprivation (PMID: 31847113). Guanosine is a purine nucleoside in which guanine is attached to ribofuranose via a beta-N(9)-glycosidic bond. It has a role as a fundamental metabolite. It is a purines D-ribonucleoside and a member of guanosines. It is functionally related to a guanine. Guanosine is a nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine can be phosphorylated to become GMP (guanosine monophosphate), cGMP (cyclic guanosine monophosphate), GDP (guanosine diphosphate) and GTP (guanosine triphosphate) which are factors in signal transduction pathways. Guanosine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Guanosine is a natural product found in Ulva australis, Allium chinense, and other organisms with data available. Guanosine is a purine nucleoside formed from a beta-N9-glycosidic bond between guanine and a ribose ring and is essential for metabolism. Guanosine is a metabolite found in or produced by Saccharomyces cerevisiae. A purine nucleoside that has guanine linked by its N9 nitrogen to the C1 carbon of ribose. It is a component of ribonucleic acid and its nucleotides play important roles in metabolism. (From Dorland, 28th ed) Guanosine is a nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a beta-N9-glycosidic bond. Guanosine can be phosphorylated to become GMP (guanosine monophosphate), cGMP (cyclic guanosine monophosphate), GDP (guanosine diphosphate) and GTP (guanosine triphosphate). ; The nucleoside guanosine exert important neuroprotective and neuromodulator roles in the central nervous system, which may be related to inhibition of the glutamatergic neurotransmission activity. Guanosine is the specific extracellular guanine-based purines effector and indicate that its conversion occurs not only in the central nervous system but also peripherally. (PMID: 16325434); Guanosine is a nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a ?-N9-glycosidic bond. Guanosine is found in many foods, some of which are elderberry, malus (crab apple), acerola, and arrowhead. A purine nucleoside in which guanine is attached to ribofuranose via a beta-N(9)-glycosidic bond. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS [Spectral] Guanosine (exact mass = 283.09167) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) and Glutathione disulfide (exact mass = 612.15196) and AMP (exact mass = 347.06308) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Guanosine (exact mass = 283.09167) and Guanine (exact mass = 151.04941) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Acquisition and generation of the data is financially supported in part by CREST/JST. relative retention time with respect to 9-anthracene Carboxylic Acid is 0.125 CONFIDENCE standard compound; INTERNAL_ID 317 KEIO_ID G015; [MS2] KO008966 Annotation level-2 KEIO_ID G015 Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity. Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity. Guanosine (DL-Guanosine) is a purine nucleoside comprising guanine attached to a ribose (ribofuranose) ring via a β-N9-glycosidic bond. Guanosine possesses anti-HSV activity.

Guanine

C5H5N5O (151.0494)

Guanine is one of the five main nucleobases found in the nucleic acids DNA and RNA. Guanine is a derivative of purine, consisting of a fused pyrimidine-imidazole ring system with conjugated double bonds. Being unsaturated, the bicyclic molecule is planar. The guanine nucleoside is called guanosine. The first isolation of guanine was reported in 1844 from the excreta of sea birds, known as guano, which was used as a source of fertilizer. High affinity binding of guanine nucleotides and the ability to hydrolyze bound GTP to GDP are characteristics of an extended family of intracellular proteins. Guanine nucleotide-binding regulatory proteins may be involved in the activation of phospholipases C and A2 by hormones and other ligands. The binding of hormones to receptors that activate phospholipase C is decreased by guanine nucleotides and these hormones also stimulate a high-affinity GTPase activity in cell membranes. Effects of hormones on phospholipase C activity in cell-free preparations are dependent on the presence of guanine nucleotides. Hypoxanthine-guanine phosphoribosyltransferase (HPRT, EC 2.4.2.8) is a purine salvage enzyme that catalyses the conversion of hypoxanthine and guanine to their respective mononucleotides. Partial deficiency of this enzyme can result in the overproduction of uric acid leading to a severe form of gout, whilst a virtual absence of HPRT activity causes the Lesch-Nyhan syndrome, an inborn error of metabolism, which is characterised by hyperuricaemia, mental retardation, choreoathetosis and compulsive self-mutilation. Peroxynitrite induces DNA base damage predominantly at guanine (G) and 8-oxoguanine (8-oxoG) nucleobases via oxidation reactions. G and 8-oxoG are the most reactive bases toward Peroxynitrite and possibly the major contributors to peroxynitrite-derived genotoxic and mutagenic lesions. The neutral G radical, reacts with NO2 to yield 8-nitroguanine and 5-nitro-4-guanidinohydantoin (PMID: 16352449, 2435586, 2838362, 1487231). Guanine is a 2-aminopurine carrying a 6-oxo substituent. It has a role as a human metabolite, an algal metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is a purine nucleobase, an oxopurine and a member of 2-aminopurines. It derives from a hydride of a 9H-purine. Guanine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Guanine is a natural product found in Fritillaria thunbergii, Isatis tinctoria, and other organisms with data available. Guanine is a purine base that is a constituent of nucleotides occurring in nucleic acids. Guanine is a mineral with formula of C5H3(NH2)N4O. The corresponding IMA (International Mineralogical Association) number is IMA1973-056. The IMA symbol is Gni. Guanine is a metabolite found in or produced by Saccharomyces cerevisiae. Occurs widely in animals and plants. Component of nucleic acids (CCD) A 2-aminopurine carrying a 6-oxo substituent. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS [Spectral] Guanine (exact mass = 151.04941) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Guanine (exact mass = 151.04941) and D-Gluconic acid (exact mass = 196.0583) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Guanine (exact mass = 151.04941) and L-Valine (exact mass = 117.07898) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Acquisition and generation of the data is financially supported in part by CREST/JST. CONFIDENCE Reference Standard (Level 1); INTERNAL_ID 54 CONFIDENCE standard compound; ML_ID 43

Uridine

C9H12N2O6 (244.0695)

Uridine, also known as beta-uridine or 1-beta-D-ribofuranosylpyrimidine-2,4(1H,3H)-dione, is a member of the class of compounds known as pyrimidine nucleosides. Pyrimidine nucleosides are compounds comprising a pyrimidine base attached to a ribosyl or deoxyribosyl moiety. More specifically, uridine is a nucleoside consisting of uracil and D-ribose and a component of RNA. Uridine is soluble (in water) and a very weakly acidic compound (based on its pKa). Uridine can be synthesized from uracil. It is one of the five standard nucleosides which make up nucleic acids, the others being adenosine, thymidine, cytidine and guanosine. The five nucleosides are commonly abbreviated to their one-letter codes U, A, T, C and G respectively. Uridine is also a parent compound for other transformation products, including but not limited to, nikkomycin Z, 3-(enolpyruvyl)uridine 5-monophosphate, and 5-aminomethyl-2-thiouridine. Uridine can be found in most biofluids, including urine, breast milk, cerebrospinal fluid (CSF), and blood. Within the cell, uridine is primarily located in the mitochondria, in the nucleus and the lysosome. It can also be found in the extracellular space. As an essential nucleoside, uridine exists in all living species, ranging from bacteria to humans. In humans, uridine is involved in several metabolic disorders, some of which include dhydropyrimidinase deficiency, MNGIE (mitochondrial neurogastrointestinal encephalopathy), and beta-ureidopropionase deficiency. Moreover, uridine is found to be associated with Lesch-Nyhan syndrome, which is an inborn error of metabolism. Uridine is a nucleoside consisting of uracil and D-ribose and a component of RNA. Uridine plays a role in the glycolysis pathway of galactose. In humans there is no catabolic process to metabolize galactose. Therefore, galactose is converted to glucose and metabolized via the normal glucose metabolism pathways. More specifically, consumed galactose is converted into galactose 1-phosphate (Gal-1-P). This molecule is a substrate for the enzyme galactose-1-phosphate uridyl transferase which transfers a UDP molecule to the galactose molecule. The end result is UDP-galactose and glucose-1-phosphate. This process is continued to allow the proper glycolysis of galactose. Uridine is found in many foods (anything containing RNA) but is destroyed in the liver and gastrointestinal tract, and so no food, when consumed, has ever been reliably shown to elevate blood uridine levels. On the other hand, consumption of RNA-rich foods may lead to high levels of purines (adenine and guanosine) in blood. High levels of purines are known to increase uric acid production and may aggravate or lead to conditions such as gout. Uridine is a ribonucleoside composed of a molecule of uracil attached to a ribofuranose moiety via a beta-N(1)-glycosidic bond. It has a role as a human metabolite, a fundamental metabolite and a drug metabolite. It is functionally related to a uracil. Uridine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Uridine is a Pyrimidine Analog. The chemical classification of uridine is Pyrimidines, and Analogs/Derivatives. Uridine is a natural product found in Ulva australis, Synechocystis, and other organisms with data available. Uridine is a nucleoside consisting of uracil and D-ribose and a component of RNA. Uridine has been studied as a rescue agent to reduce the toxicities associated with 5-fluorouracil (5-FU), thereby allowing the administration of higher doses of 5-FU in chemotherapy regimens. (NCI04) Uridine is a metabolite found in or produced by Saccharomyces cerevisiae. A ribonucleoside in which RIBOSE is linked to URACIL. Uridine is a molecule (known as a nucleoside) that is formed when uracil is attached to a ribose ring (also known as a ribofuranose) via a b-N1-glycosidic bond. ; Uridine is a molecule (known as a nucleoside) that is formed when uracil is attached to a ribose ring (also known as a ribofuranose) via a ?-N1-glycosidic bond. Uridine is found in many foods, some of which are celery leaves, canola, common hazelnut, and hickory nut. A ribonucleoside composed of a molecule of uracil attached to a ribofuranose moiety via a beta-N(1)-glycosidic bond. [Spectral] Uridine (exact mass = 244.06954) and Adenosine (exact mass = 267.09675) and Glutathione (exact mass = 307.08381) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Uridine (exact mass = 244.06954) and Glutathione (exact mass = 307.08381) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Uridine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=58-96-8 (retrieved 2024-06-29) (CAS RN: 58-96-8). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Uridine (β-Uridine) is a glycosylated pyrimidine-analog containing uracil attached to a ribose ring (or more specifically, aribofuranose) via a β-N1-glycosidic bond. Uridine (β-Uridine) is a glycosylated pyrimidine-analog containing uracil attached to a ribose ring (or more specifically, aribofuranose) via a β-N1-glycosidic bond. Uridine (β-Uridine) is a glycosylated pyrimidine-analog containing uracil attached to a ribose ring (or more specifically, aribofuranose) via a β-N1-glycosidic bond.

Benzoic acid

C7H6O2 (122.0368)

Benzoic acid appears as a white crystalline solid. Slightly soluble in water. The primary hazard is the potential for environmental damage if released. Immediate steps should be taken to limit spread to the environment. Used to make other chemicals, as a food preservative, and for other uses. Benzoic acid is a compound comprising a benzene ring core carrying a carboxylic acid substituent. It has a role as an antimicrobial food preservative, an EC 3.1.1.3 (triacylglycerol lipase) inhibitor, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor, a plant metabolite, a human xenobiotic metabolite, an algal metabolite and a drug allergen. It is a conjugate acid of a benzoate. A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid. As the sodium salt form, sodium benzoate is used as a treatment for urea cycle disorders due to its ability to bind amino acids. This leads to excretion of these amino acids and a decrease in ammonia levels. Recent research shows that sodium benzoate may be beneficial as an add-on therapy (1 gram/day) in schizophrenia. Total Positive and Negative Syndrome Scale scores dropped by 21\\\\\% compared to placebo. Benzoic acid is a Nitrogen Binding Agent. The mechanism of action of benzoic acid is as an Ammonium Ion Binding Activity. Benzoic acid, C6H5COOH, is a colourless crystalline solid and the simplest aromatic carboxylic acid. Benzoic acid occurs naturally free and bound as benzoic acid esters in many plant and animal species. Appreciable amounts have been found in most berries (around 0.05\\\\\%). Cranberries contain as much as 300-1300 mg free benzoic acid per kg fruit. Benzoic acid is a fungistatic compound that is widely used as a food preservative. It often is conjugated to glycine in the liver and excreted as hippuric acid. Benzoic acid is a byproduct of phenylalanine metabolism in bacteria. It is also produced when gut bacteria process polyphenols (from ingested fruits or beverages). A fungistatic compound that is widely used as a food preservative. It is conjugated to GLYCINE in the liver and excreted as hippuric acid. See also: Salicylic Acid (active moiety of); Benzoyl Peroxide (active moiety of); Sodium Benzoate (active moiety of) ... View More ... Widespread in plants especies in essential oils and fruits, mostly in esterified formand is also present in butter, cooked meats, pork fat, white wine, black and green tea, mushroom and Bourbon vanilla. It is used in foodstuffs as antimicrobial and flavouring agent and as preservative. In practical food preservation, the Na salt of benzoic acid is the most widely used form (see MDQ71-S). The antimicrobial activity comprises a wide range of microorganisms, particularly yeasts and moulds. Undissociated benzoic acid is more effective than dissociated, thus the preservative action is more efficient in acidic foodstuffs. Typical usage levels are 500-2000 ppm. Benzoic acid is found in many foods, some of which are animal foods, common grape, lovage, and fruits. Benzoic acid, C6H5COOH, is a colourless crystalline solid and the simplest aromatic carboxylic acid. Benzoic acid occurs naturally free and bound as benzoic acid esters in many plant and animal species. Appreciable amounts have been found in most berries (around 0.05\\\\\%). Cranberries contain as much as 300-1300 mg free benzoic acid per kg fruit. Benzoic acid is a fungistatic compound that is widely used as a food preservative. It often is conjugated to glycine in the liver and excreted as hippuric acid. Benzoic acid is a byproduct of phenylalanine metabolism in bacteria. It is also produced when gut bacteria process polyphenols (from ingested fruits or beverages). It can be found in Serratia (PMID:23061754). Benzoic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=65-85-0 (retrieved 2024-06-28) (CAS RN: 65-85-0). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Benzoic acid is an aromatic alcohol existing naturally in many plants and is a common additive to food, drinks, cosmetics and other products. It acts as preservatives through inhibiting both bacteria and fungi. Benzoic acid is an aromatic alcohol existing naturally in many plants and is a common additive to food, drinks, cosmetics and other products. It acts as preservatives through inhibiting both bacteria and fungi.

Cytidine

C9H13N3O5 (243.0855)

Cytidine is a nucleoside that is composed of the base cytosine linked to the five-carbon sugar D-ribose. Cytidine is a pyrimidine that besides being incorporated into nucleic acids, can serve as a substrate for the salvage pathway of pyrimidine nucleotide synthesis. It is a precursor of cytidine triphosphate (CTP) needed in the phosphatidylcholine (PC) and phosphatidylethanolamine (PE) biosynthetic pathways. These variations probably reflect the species differences in cytidine deaminase, the enzyme that converts cytidine to uridine in the body. The transport of cytidine into the brains extracellular fluid, and then into neurons and glia, are essential prerequisites for cytidine to be utilized in the brain. An efficient mechanism mediating the brain uptake of circulating cytidine has not yet been demonstrated. The biosynthesis of PC, the most abundant phosphatide in the brain, via the Kennedy pathway requires phosphocholine and cytidine triphosphate (CTP), a cytidine nucleotide involved in the rate-limiting step. The enzyme that converts CTP to endogenous CDP-choline (CTP:phosphocholine cytidylyltransferase) is unsaturated at physiological brain CTP levels. APOBEC is a family of enzymes that has been discovered with the ability to deaminate cytidines on RNA or DNA. The human apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G protein (APOBEC3G, or hA3G), provides cells with an intracellular antiretroviral activity that is associated with the hypermutation of viral DNA through cytidine deamination. Indeed, hA3G belongs to a family of vertebrate proteins that contains one or two copies of a signature sequence motif unique to cytidine deaminases (CTDAs) (PMID: 16769123, 15780864, 16720547). Cytidine is a nucleoside that is composed of the base cytosine linked to the five-carbon sugar D-ribose. Cytidine is a pyrimidine that besides being incorporated into nucleic acids, can serve as substrate for the salvage pathway of pyrimidine nucleotide synthesis; as precursor of the cytidine triphosphate (CTP) needed in the phosphatidylcholine (PC) and phosphatidylethanolamine (PE) biosynthetic pathway. These variations probably reflect the species differences in cytidine deaminase, the enzyme that converts cytidine to uridine in the body. The transports of cytidine into the brains extracellular fluid, and then into neurons and glia, are essential prerequisites for cytidine to be utilized in brain. An efficient mechanism mediating the brain uptake of circulating cytidine has not yet been demonstrated. The biosynthesis of PC, the most abundant phosphatide in the brain, via the Kennedy pathway requires phosphocholine and cytidine triphosphate (CTP), a cytidine nucleotide, which is involved in the rate-limiting step. The enzyme that converts CTP to endogenous CDP-choline (CTP: phosphocholine cytidylyltransferase) is unsaturated at physiological brain CTP levels. Cytidine is a white crystalline powder. (NTP, 1992) Cytidine is a pyrimidine nucleoside in which cytosine is attached to ribofuranose via a beta-N(1)-glycosidic bond. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a mouse metabolite. It is functionally related to a cytosine. Cytidine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Cytidine is a natural product found in Fritillaria thunbergii, Castanopsis fissa, and other organisms with data available. Cytidine is a pyrimidine nucleoside comprised of a cytosine bound to ribose via a beta-N1-glycosidic bond. Cytidine is a precursor for uridine. Both cytidine and uridine are utilized in RNA synthesis. Cytidine is a metabolite found in or produced by Saccharomyces cerevisiae. A pyrimidine nucleoside that is composed of the base CYTOSINE linked to the five-carbon sugar D-RIBOSE. A pyrimidine nucleoside in which cytosine is attached to ribofuranose via a beta-N(1)-glycosidic bond. [Spectral] Cytidine (exact mass = 243.08552) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) and NAD+ (exact mass = 663.10912) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Cytidine (exact mass = 243.08552) and 3,4-Dihydroxy-L-phenylalanine (exact mass = 197.06881) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. [Spectral] Cytidine (exact mass = 243.08552) and S-Adenosyl-L-homocysteine (exact mass = 384.12159) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3]. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3]. Cytidine is a pyrimidine nucleoside and acts as a component of RNA. Cytidine is a precursor of uridine. Cytidine controls neuronal-glial glutamate cycling, affecting cerebral phospholipid metabolism, catecholamine synthesis, and mitochondrial function[1][2][3].

Galactitol

C6H14O6 (182.079)

Galactitol or dulcitol is a sugar alcohol that is a metabolic breakdown product of galactose. Galactose is derived from lactose in food (such as dairy products). When lactose is broken down by the enzyme lactase it produces glucose and galactose. Galactitol has a slightly sweet taste. It is produced from galactose in a reaction catalyzed by aldose reductase. When present in sufficiently high levels, galactitol can act as a metabotoxin, a neurotoxin, and a hepatotoxin. A neurotoxin is a compound that disrupts or attacks neural cells and neural tissue. A hepatotoxin as a compound that disrupts or attacks liver tissue or liver cells. A metabotoxin is an endogenously produced metabolite that causes adverse health effects at chronically high levels. Chronically high levels of galactitol are associated with at least two inborn errors of metabolism, including galactosemia and galactosemia type II. Galactosemia is a rare genetic metabolic disorder that affects an individuals ability to metabolize the sugar galactose properly. Excess lactose consumption in individuals with galactose intolerance or galactosemia activates aldose reductase to produce galactitol, thus depleting NADPH and leading to lowered glutathione reductase activity. As a result, hydrogen peroxide or other free radicals accumulate causing serious oxidative damage to various cells and tissues. In individuals with galactosemia, the enzymes needed for the further metabolism of galactose (galactose-1-phosphate uridyltransferase) are severely diminished or missing entirely, leading to toxic levels of galactose 1-phosphate, galactitol, and galactonate. High levels of galactitol in infants are specifically associated with hepatomegaly (an enlarged liver), cirrhosis, renal failure, cataracts, vomiting, seizure, hypoglycemia, lethargy, brain damage, and ovarian failure. Galactitol is an optically inactive hexitol having meso-configuration. It has a role as a metabolite, a human metabolite, an Escherichia coli metabolite and a mouse metabolite. Galactitol is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Galactitol is a natural product found in Elaeodendron croceum, Salacia chinensis, and other organisms with data available. Galactitol is a naturally occurring product of plants obtained following reduction of galactose. It appears as a white crystalline powder with a slight sweet taste. It may form in excess in the lens of the eye in galactosemias a deficiency of galactokinase. A naturally occurring product of plants obtained following reduction of GALACTOSE. It appears as a white crystalline powder with a slight sweet taste. It may form in excess in the lens of the eye in GALACTOSEMIAS, a deficiency of GALACTOKINASE. A naturally occurring product of plants obtained following reduction of galactose. It appears as a white crystalline powder with a slight sweet taste.; Dulcitol (or galactitol) is a sugar alcohol, the reduction product of galactose. Galactitol in the urine is a biomarker for the consumption of milk. Galactitol is found in many foods, some of which are elliotts blueberry, italian sweet red pepper, catjang pea, and green bean. An optically inactive hexitol having meso-configuration. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Acquisition and generation of the data is financially supported in part by CREST/JST. Dulcite is a sugar alcohol with a slightly sweet taste which is a metabolic breakdown product of galactose. Dulcite is a sugar alcohol with a slightly sweet taste which is a metabolic breakdown product of galactose.

Fructose

C6H12O6 (180.0634)

A D-fructopyranose in which the anomeric centre has beta-configuration. Fructose, a member of a group of carbohydrates known as simple sugars, or monosaccharides. Fructose, along with glucose, occurs in fruits, honey, and syrups; it also occurs in certain vegetables. It is a component, along with glucose, of the disaccharide sucrose, or common table sugar. Phosphate derivatives of fructose (e.g., fructose-1-phosphate, fructose-1,6-diphosphate) are important in the metabolism of carbohydrates. D-fructopyranose is a fructopyranose having D-configuration. It has a role as a sweetening agent. It is a fructopyranose, a D-fructose and a cyclic hemiketal. D-Fructose is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). D-Fructose is a natural product found in Gentiana orbicularis, Colchicum schimperi, and other organisms with data available. A monosaccharide in sweet fruits and honey that is soluble in water, alcohol, or ether. It is used as a preservative and an intravenous infusion in parenteral feeding. Fructose is a levorotatory monosaccharide and an isomer of glucose. Although fructose is a hexose (6 carbon sugar), it generally exists as a 5-member hemiketal ring (a furanose). D-Fructose (D(-)-Fructose) is a naturally occurring monosaccharide found in many plants. D-Fructose (D(-)-Fructose) is a naturally occurring monosaccharide found in many plants. Fructose is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose. Fructose is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose.

D-Xylitol

C5H12O5 (152.0685)

Xylitol is a five-carbon sugar alcohol that is obtained through the diet. It is not endogenously produced by humans. Xylitol is used as a diabetic sweetener which is roughly as sweet as sucrose with 33\\\\\\% fewer calories. Xylitol is naturally found in many fruits (strawberries, plums, raspberries) and vegetables (e.g. cauliflower). Because of fruit and vegetable consumption the human body naturally processes 15 grams of xylitol per day. Xylitol can be produced industrially starting from primary matters rich in xylan which is hydrolyzed to obtain xylose. It is extracted from hemicelluloses present in the corn raids, the almond hulls or the barks of birch (or of the by-products of wood: shavings hard, paper pulp). Of all polyols, it is the one that has the sweetest flavor (it borders that of saccharose). It gives a strong refreshing impression, making xylitol an ingredient of choice for the sugarless chewing gum industry. In addition to his use in confectionery, it is used in the pharmaceutical industry for certain mouthwashes and toothpastes and in cosmetics (creams, soaps, etc.). Xylitol is produced starting from xylose, the isomaltose, by enzymatic transposition of the saccharose (sugar). Xylitol is not metabolized by cariogenic (cavity-causing) bacteria and gum chewing stimulates the flow of saliva; as a result, chewing xylitol gum may prevent dental caries. Chewing xylitol gum for 4 to 14 days reduces the amount of dental plaque. The reduction in the amount of plaque following xylitol gum chewing within 2 weeks may be a transient phenomenon. Chewing xylitol gum for 6 months reduced mutans streptococci levels in saliva and plaque in adults (PMID:17426399, 15964535). Studies have also shown xylitol chewing gum can help prevent acute otitis media (ear aches and infections) as the act of chewing and swallowing assists with the disposal of earwax and clearing the middle ear, while the presence of xylitol prevents the growth of bacteria in the eustachian tubes. Xylitol is well established as a life-threatening toxin to dogs. The number of reported cases of xylitol toxicosis in dogs has significantly increased since the first reports in 2002. Dogs that have ingested foods containing xylitol (greater than 100 milligrams of xylitol consumed per kilogram of bodyweight) have presented with low blood sugar (hypoglycemia), which can be life-threatening. Xylitol is found to be associated with ribose-5-phosphate isomerase deficiency, which is an inborn error of metabolism. Occurs in a variety of plants, berries and fruits including plums, raspberries, cauliflower and endive; sweetening agent used in sugar free sweets and chewing gum D000074385 - Food Ingredients > D005503 - Food Additives D010592 - Pharmaceutic Aids > D005421 - Flavoring Agents COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Ribitol is a crystalline pentose alcohol formed by the reduction of ribose. Enhancing the flux of D-glucose to the pentose phosphate pathway in Saccharomyces cerevisiae for the production of D-ribose and ribitol. Ribitol is a crystalline pentose alcohol formed by the reduction of ribose. Enhancing the flux of D-glucose to the pentose phosphate pathway in Saccharomyces cerevisiae for the production of D-ribose and ribitol. Xylitol can be classified as polyols and sugar alcohols. Xylitol can be classified as polyols and sugar alcohols.

Squalene

C30H50 (410.3912)

Squalene is an unsaturated aliphatic hydrocarbon (carotenoid) with six unconjugated double bonds found in human sebum (5\\\\%), fish liver oils, yeast lipids, and many vegetable oils (e.g. palm oil, cottonseed oil, rapeseed oil). Squalene is a volatile component of the scent material from Saguinus oedipus (cotton-top tamarin monkey) and Saguinus fuscicollis (saddle-back tamarin monkey) (Hawleys Condensed Chemical Reference). Squalene is a component of adult human sebum that is principally responsible for fixing fingerprints (ChemNetBase). It is a natural organic compound originally obtained for commercial purposes primarily from shark liver oil, though there are botanical sources as well, including rice bran, wheat germ, and olives. All higher organisms produce squalene, including humans. It is a hydrocarbon and a triterpene. Squalene is a biochemical precursor to the whole family of steroids. Oxidation of one of the terminal double bonds of squalene yields 2,3-squalene oxide which undergoes enzyme-catalyzed cyclization to afford lanosterol, which is then elaborated into cholesterol and other steroids. Squalene is a low-density compound often stored in the bodies of cartilaginous fishes such as sharks, which lack a swim bladder and must therefore reduce their body density with fats and oils. Squalene, which is stored mainly in the sharks liver, is lighter than water with a specific gravity of 0.855 (Wikipedia) Squalene is used as a bactericide. It is also an intermediate in the manufacture of pharmaceuticals, rubber chemicals, and colouring materials (Physical Constants of Chemical Substances). Trans-squalene is a clear, slightly yellow liquid with a faint odor. Density 0.858 g / cm3. Squalene is a triterpene consisting of 2,6,10,15,19,23-hexamethyltetracosane having six double bonds at the 2-, 6-, 10-, 14-, 18- and 22-positions with (all-E)-configuration. It has a role as a human metabolite, a plant metabolite, a Saccharomyces cerevisiae metabolite and a mouse metabolite. Squalene is originally obtained from shark liver oil. It is a natural 30-carbon isoprenoid compound and intermediate metabolite in the synthesis of cholesterol. It is not susceptible to lipid peroxidation and provides skin protection. It is ubiquitously distributed in human tissues where it is transported in serum generally in association with very low density lipoproteins. Squalene is investigated as an adjunctive cancer therapy. Squalene is a natural product found in Ficus septica, Garcinia multiflora, and other organisms with data available. squalene is a metabolite found in or produced by Saccharomyces cerevisiae. A natural 30-carbon triterpene. See also: Olive Oil (part of); Shark Liver Oil (part of). A triterpene consisting of 2,6,10,15,19,23-hexamethyltetracosane having six double bonds at the 2-, 6-, 10-, 14-, 18- and 22-positions with (all-E)-configuration. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Squalene is an intermediate product in the synthesis of cholesterol, and shows several pharmacological properties such as hypolipidemic, hepatoprotective, cardioprotective, antioxidant, and antitoxicant activity. Squalene also has anti-fungal activity and can be used for the research of Trichophyton mentagrophytes research[2]. Squalene is an intermediate product in the synthesis of cholesterol, and shows several pharmacological properties such as hypolipidemic, hepatoprotective, cardioprotective, antioxidant, and antitoxicant activity. Squalene also has anti-fungal activity and can be used for the research of Trichophyton mentagrophytes research[2].

Maltodextrin

C12H22O11 (342.1162)

Alpha-maltose is a maltose that has alpha-configuration at the reducing end anomeric centre. alpha-Maltose is a natural product found in Cyperus esculentus, Phytelephas aequatorialis, and other organisms with data available. Maltodextrin is an oligosaccharide derived from starch that is used as a food additive and as a carbohydrate supplement. As a supplement, maltodextrin is used to provide and sustain energy levels during endurance-oriented workouts o sports, and to help build muscle mass and support weight gain. COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials, COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Maltose is a disaccharide formed from two units of glucose joined with an α(1→4) bond, a reducing sugar. Maltose monohydrate can be used as a energy source for bacteria. Maltose is a disaccharide formed from two units of glucose joined with an α(1→4) bond, a reducing sugar. Maltose monohydrate can be used as a energy source for bacteria.

Xanthine

C5H4N4O2 (152.0334)

Xanthine, also known as 2,6-dioxopurine, belongs to the class of organic compounds known as xanthines. These are purine derivatives with a ketone group conjugated at carbons 2 and 6 of the purine moiety. Xanthine is also classified as an oxopurine. An oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-9 is protonated. Xanthine exists in all living species, ranging from bacteria to plants to humans. In plants, several stimulants can be derived from xanthine, including caffeine, theophylline, and theobromine. Derivatives of xanthine (known collectively as xanthines) are a group of alkaloids commonly used for their effects as mild stimulants and as bronchodilators, notably in the treatment of asthma or influenza symptoms. Within humans, xanthine participates in a number of enzymatic reactions. In particular, xanthine can be biosynthesized from guanine; which is mediated by the enzyme guanine deaminase. In addition, xanthine and ribose 1-phosphate can be biosynthesized from xanthosine through the action of the enzyme purine nucleoside phosphorylase. In humans and other primates, xanthine can be converted to uric acid by the action of the xanthine oxidase enzyme. People with rare genetic disorders, specifically xanthinuria and Lesch–Nyhan syndrome, lack sufficient xanthine oxidase and cannot convert xanthine to uric acid. Individuals with xanthinuria have unusually high concentrations of xanthine in their blood and urine, which can lead to health problems such as renal failure and xanthine kidney stones. Individuals with Lesch-Nyhan syndrome have a deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase (HGPRT). The HGPRT deficiency causes a build-up of uric acid in all body fluids. This results in both high levels of uric acid in the blood and urine, associated with severe gout and kidney problems. Neurological signs include poor muscle control and moderate intellectual disability. 9H-xanthine is an oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-9 is protonated. It has a role as a Saccharomyces cerevisiae metabolite. It is a tautomer of a 7H-xanthine. A purine base found in most body tissues and fluids, certain plants, and some urinary calculi. It is an intermediate in the degradation of adenosine monophosphate to uric acid, being formed by oxidation of hypoxanthine. The methylated xanthine compounds caffeine, theobromine, and theophylline and their derivatives are used in medicine for their bronchodilator effects. (Dorland, 28th ed) Xanthine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655). Xanthine is a natural product found in Beta vulgaris, Camellia sinensis var. assamica, and other organisms with data available. Xanthine is a purine base found in most body tissues and fluids, certain plants, and some urinary calculi. It is an intermediate in the degradation of adenosine monophosphate to uric acid, being formed by oxidation of hypoxanthine. The methylated xanthine compounds caffeine, theobromine, and theophylline and their derivatives are used in medicine for their bronchodilator effects. (Dorland, 28th ed.). Xanthine is a metabolite found in or produced by Saccharomyces cerevisiae. A purine base found in most body tissues and fluids, certain plants, and some urinary calculi. It is an intermediate in the degradation of adenosine monophosphate to uric acid, being formed by oxidation of hypoxanthine. The methylated xanthine compounds caffeine, theobromine, and theophylline and their derivatives are used in medicine for their bronchodilator effects. (Dorland, 28th ed) An oxopurine in which the purine ring is substituted by oxo groups at positions 2 and 6 and N-9 is protonated. Xanthine, a plant alkaloid found in tea, coffee, and cocoa, is a mild stimulant of the central nervous system. Xanthine also acts as an intermediate product on the pathway of purine degradation[1][2][3]. Xanthine, a plant alkaloid found in tea, coffee, and cocoa, is a mild stimulant of the central nervous system. Xanthine also acts as an intermediate product on the pathway of purine degradation[1][2][3]. Xanthine, a plant alkaloid found in tea, coffee, and cocoa, is a mild stimulant of the central nervous system. Xanthine also acts as an intermediate product on the pathway of purine degradation[1][2][3].

Creatinine

C4H7N3O (113.0589)

Creatinine or creatine anhydride, is a breakdown product of creatine phosphate in muscle. The loss of water molecule from creatine results in the formation of creatinine. Creatinine is transferred to the kidneys by blood plasma, whereupon it is eliminated from the body by glomerular filtration and partial tubular excretion. Creatinine is usually produced at a fairly constant rate by the body. Measuring serum creatinine is a simple test and it is the most commonly used indicator of renal function. A rise in blood creatinine levels is observed only with marked damage to functioning nephrons; therefore this test is not suitable for detecting early kidney disease. The typical reference range for women is considered about 45-90 umol/l, for men 60-110 umol/l. Creatine and creatinine are metabolized in the kidneys, muscle, liver and pancreas. [HMDB]. Creatinine is a biomarker for the consumption of meat. Creatinine is found in many foods, some of which are canada blueberry, other bread, french plantain, and grape. Creatinine, or creatine anhydride, is a breakdown product of creatine phosphate in muscle. The loss of a water molecule from creatine results in the formation of creatinine. Creatinine is transferred to the kidneys by blood plasma, whereupon it is eliminated from the body by glomerular filtration and partial tubular excretion. Creatinine is usually produced at a fairly constant rate by the body. Measuring serum creatinine is a simple test and it is the most commonly used indicator of renal function. A rise in blood creatinine levels is observed only with marked damage to functioning nephrons. Therefore, this test is not suitable for detecting early kidney disease. The typical reference range for women is considered about 45-90 µmol/L; for men 60-110 µmol/L. Creatine and creatinine are metabolized in the kidneys, muscle, liver, and pancreas. Creatinine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=60-27-5 (retrieved 2024-07-01) (CAS RN: 60-27-5). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Creatinine (NSC13123) is a breakdown product of creatine phosphate in muscles. Creatinine (NSC13123) is a breakdown product of creatine phosphate in muscles.

Deoxycytidine

C9H13N3O4 (227.0906)

Deoxycytidine, also known as dC, belongs to the class of organic compounds known as pyrimidine 2-deoxyribonucleosides. Pyrimidine 2-deoxyribonucleosides are compounds consisting of a pyrimidine linked to a ribose which lacks a hydroxyl group at position 2. Deoxycytidine is also classified as a deoxyribonucleoside, a component of deoxyribonucleic acid (DNA). Deoxycytidine is similar to the ribonucleoside cytidine, but with one hydroxyl group removed from the 2 position. Deoxycytidine exists in all living species, ranging from bacteria to plants to humans. Degradation of DNA through apoptosis or cell death produces deoxycytidine. Within humans, deoxycytidine participates in a number of enzymatic reactions. In particular, deoxycytidine can be biosynthesized from dCMP through the action of the enzyme cytosolic purine 5-nucleotidase. In addition, deoxycytidine can be converted into dCMP; which is mediated by the enzyme uridine-cytidine kinase-like 1. Deoxycytidine can be phosphorylated at the C-5 position by the enzyme deoxycytidine kinase to produce deoxycytidine monophosphate (dCMP), and to a lesser extent, deoxycytidine diphosphate (dCDP), and deoxycytidine triphosphate (dCTP). Deoxycytidine can also be phosphorylated by thymidine kinase 2 (TK2). Deoxycytidine can potentially be used for the treatment of the metabolic disorder known as thymidine kinase 2 deficiency (TK2 deficiency). TK2 deficiency has three disease subtypes: i) infantile-onset myopathy with rapid progression to early death ii) childhood-onset myopathy, which resembles spinal muscular atrophy (SMA) type III, begins between ages 1 and 12 years with progression to loss of ambulation within few years and iii) late-onset myopathy starting at age 12 year or later with moderate to severe myopathy manifesting as either isolated chronic progressive external ophthalmoplegia (CPEO) or a generalized myopathy with CPEO plus facial and limb weakness, gradual progression, and, in some cases, respiratory failure and loss of ability to walk in adulthood (PMID: 28318037). In mouse models of TK2, dC was shown to delay disease onset, prolong life span and restore mtDNA copy number as well as respiratory chain enzyme activities (PMID: 28318037). One of the principal nucleosides of DNA composed of cytosine and deoxyribose. A nucleoside consists of only a pentose sugar linked to a purine or pyrimidine base, without a phosphate group. When N1 is linked to the C1 of deoxyribose, deoxynucleosides and nucleotides are formed from cytosine and deoxyribose; deoxycytidine monophosphate (dCMP), deoxycytidine diphosphate (dCDP), deoxycytidine triphosphate (dCTP). CTP is the source of the cytidine in RNA (ribonucleic acid) and deoxycytidine triphosphate (dCTP) is the source of the deoxycytidine in DNA (deoxyribonucleic acid). [HMDB]. Deoxycytidine is found in many foods, some of which are japanese pumpkin, turmeric, prairie turnip, and kai-lan. C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C272 - Antimetabolite Acquisition and generation of the data is financially supported in part by CREST/JST. C26170 - Protective Agent > C2459 - Chemoprotective Agent COVID info from COVID-19 Disease Map KEIO_ID D055; [MS2] KO008940 Corona-virus KEIO_ID D055 Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 2'-Deoxycytidine, a deoxyribonucleoside, can inhibit biological effects of Bromodeoxyuridine (Brdu). 2'-Deoxycytidine is essential for the synthesis of nucleic acids, that can be used for the research of cancer[1][2]. 2'-Deoxycytidine, a deoxyribonucleoside, could inhibit biological effects of Bromodeoxyuridine (Brdu).

Deoxyuridine

C9H12N2O5 (228.0746)

Deoxyuridine, also known as dU, belongs to the class of organic compounds known as pyrimidine 2-deoxyribonucleosides. Pyrimidine 2-deoxyribonucleosides are compounds consisting of a pyrimidine linked to a ribose which lacks a hydroxyl group at position 2. It is similar in chemical structure to uridine, but without the 2-hydroxyl group. Deoxyuridine exists in all living organisms, ranging from bacteria to humans. Within humans, deoxyuridine participates in a number of enzymatic reactions. In particular, deoxyuridine can be biosynthesized from deoxycytidine through its interaction with the enzyme cytidine deaminase. In addition, deoxyuridine can be converted into uracil and deoxyribose 1-phosphate through its interaction with the enzyme thymidine phosphorylase. Deoxyuridine is considered to be an antimetabolite that is converted into deoxyuridine triphosphate during DNA synthesis. Laboratory suppression of deoxyuridine is used to diagnose megaloblastic anemia due to vitamin B12 and folate deficiencies. In humans, deoxyuridine is involved in the metabolic disorder called UMP synthase deficiency (orotic aciduria). Outside of the human body, deoxyuridine has been detected, but not quantified in, several different foods, such as lichee, highbush blueberries, agaves, macadamia nut (M. tetraphylla), and red bell peppers. This could make deoxyuridine a potential biomarker for the consumption of these foods. 2-Deoxyuridine is a naturally occurring nucleoside. It is similar in chemical structure to uridine, but without the 2-hydroxyl group. It is considered to be an antimetabolite that is converted to deoxyuridine triphosphate during DNA synthesis. Laboratory suppression of deoxyuridine is used to diagnose megaloblastic anemia due to vitamin B12 and folate deficiencies. [HMDB]. Deoxyuridine is found in many foods, some of which are garden tomato (variety), hickory nut, banana, and hazelnut. Deoxyuridine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=951-78-0 (retrieved 2024-07-01) (CAS RN: 951-78-0). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). 2'-Deoxyuridine could increase chromosome breakage and results in a decreased thymidylate synthetase activity. A known use of 2'-Deoxyuridine is as a precursor in the synthesis of Edoxudine. 2'-Deoxyuridine could increase chromosome breakage and results in a decreased thymidylate synthetase activity. A known use of 2'-Deoxyuridine is as a precursor in the synthesis of Edoxudine. 2'-Deoxyuridine could increase chromosome breakage and results in a decreased thymidylate synthetase activity. A known use of 2'-Deoxyuridine is as a precursor in the synthesis of Edoxudine.

5-methylthioadenosine (MTA)

C11H15N5O3S (297.0896)

5-Methylthioadenosine, also known as MTA or thiomethyladenosine, belongs to the class of organic compounds known as 5-deoxy-5-thionucleosides. These are 5-deoxyribonucleosides in which the ribose is thio-substituted at the 5position by a S-alkyl group. 5-Methylthioadenosine is metabolized solely by MTA-phosphorylase, to yield 5-methylthioribose-1-phosphate and adenine, a crucial step in the methionine and purine salvage pathways, respectively. 5-Methylthioadenosine exists in all living species, ranging from bacteria to humans. 5-Methylthioadenosine (MTA) is a naturally occurring sulfur-containing nucleoside present in all mammalian tissues. Within humans, 5-methylthioadenosine participates in a number of enzymatic reactions. In particular, 5-methylthioadenosine and spermidine can be biosynthesized from S-adenosylmethioninamine and putrescine through the action of the enzyme spermidine synthase. In addition, 5-methylthioadenosine can be converted into 5-methylthioribose 1-phosphate and L-methionine; which is catalyzed by the enzyme S-methyl-5-thioadenosine phosphorylase. It is produced from S-adenosylmethionine mainly through the polyamine biosynthetic pathway, where it behaves as a powerful inhibitory product. For instance, 5-Methylthioadenosine has been shown to influence the regulation of gene expression, proliferation, differentiation, and apoptosis (PMID:15313459). In humans, 5-methylthioadenosine is involved in the metabolic disorder called hypermethioninemia. Outside of the human body, 5-Methylthioadenosine has been detected, but not quantified in several different foods, such as soursops, allspices, summer grapes, alaska wild rhubarbs, and breadfruits. Elevated excretion appears in children with severe combined immunodeficiency syndrome (SCID) (PMID:3987052). Evidence suggests that 5-Methylthioadenosine can affect cellular processes in many ways. 5-Methylthioadenosine can be found in human urine. 5-deoxy-5-methylthioadenosine, also known as S-methyl-5-thioadenosine or mta, is a member of the class of compounds known as 5-deoxy-5-thionucleosides. 5-deoxy-5-thionucleosides are 5-deoxyribonucleosides in which the ribose is thio-substituted at the 5position by a S-alkyl group. 5-deoxy-5-methylthioadenosine is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). 5-deoxy-5-methylthioadenosine can be found in a number of food items such as allspice, sesame, roselle, and bayberry, which makes 5-deoxy-5-methylthioadenosine a potential biomarker for the consumption of these food products. 5-deoxy-5-methylthioadenosine can be found primarily in blood and urine, as well as in human fibroblasts, platelet and prostate tissues. 5-deoxy-5-methylthioadenosine exists in all living species, ranging from bacteria to humans. In humans, 5-deoxy-5-methylthioadenosine is involved in a couple of metabolic pathways, which include methionine metabolism and spermidine and spermine biosynthesis. 5-deoxy-5-methylthioadenosine is also involved in several metabolic disorders, some of which include glycine n-methyltransferase deficiency, methionine adenosyltransferase deficiency, homocystinuria-megaloblastic anemia due to defect in cobalamin metabolism, cblg complementation type, and hypermethioninemia. 5'-Methylthioadenosine (5'-(Methylthio)-5'-deoxyadenosine) is a nucleoside generated from S-adenosylmethionine (SAM) during polyamine synthesis[1]. 5'-Methylthioadenosine suppresses tumors by inhibiting tumor cell proliferation, invasion, and the induction of apoptosis while controlling the inflammatory micro-environments of tumor tissue. 5'-Methylthioadenosine and its associated materials have striking regulatory effects on tumorigenesis[2]. 5'-Methylthioadenosine (5'-(Methylthio)-5'-deoxyadenosine) is a nucleoside generated from S-adenosylmethionine (SAM) during polyamine synthesis[1]. 5'-Methylthioadenosine suppresses tumors by inhibiting tumor cell proliferation, invasion, and the induction of apoptosis while controlling the inflammatory micro-environments of tumor tissue. 5'-Methylthioadenosine and its associated materials have striking regulatory effects on tumorigenesis[2]. 5'-Methylthioadenosine (5'-(Methylthio)-5'-deoxyadenosine) is a nucleoside generated from S-adenosylmethionine (SAM) during polyamine synthesis[1]. 5'-Methylthioadenosine suppresses tumors by inhibiting tumor cell proliferation, invasion, and the induction of apoptosis while controlling the inflammatory micro-environments of tumor tissue. 5'-Methylthioadenosine and its associated materials have striking regulatory effects on tumorigenesis[2].

Decanoyl-CoA (n-C10:0CoA)

C31H54N7O17P3S (921.251)

Decanoyl CoA is a human liver acyl-CoA ester. It is selected to determine apparent kinetic constants for human liver acyl-CoA due to its relevance to the human diseases with cellular accumulation of this esters, especially to metabolic defects in the acyl-CoA dehydrogenation steps of the branched-chain amino acids, lysine, 5-hydroxy lysine, tryptophan, and fatty acid oxidation pathways. It is concluded that the substrate concentration is decisive for the glycine conjugate formation and that the occurrence in urine of acylglycines reflects an intramitochondrial accumulation of the corresponding acyl-CoA ester. (PMID: 3707752) [HMDB] Decanoyl CoA is a human liver acyl-CoA ester. It is selected to determine apparent kinetic constants for human liver acyl-CoA due to its relevance to the human diseases with cellular accumulation of this esters, especially to metabolic defects in the acyl-CoA dehydrogenation steps of the branched-chain amino acids, lysine, 5-hydroxy lysine, tryptophan, and fatty acid oxidation pathways. It is concluded that the substrate concentration is decisive for the glycine conjugate formation and that the occurrence in urine of acylglycines reflects an intramitochondrial accumulation of the corresponding acyl-CoA ester. (PMID: 3707752). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Debrisoquine

C10H13N3 (175.1109)

Debrisoquine is an adrenergic neuron-blocking drug. Genetic and environmental factors are determinants of the interindividual and interethnic variability in drug metabolism. Thus, interethnic differences in debrisoquine hydroxylation polymorphism (Cytochrome p450, subfamily IID, polypeptide 6, CYP2D6) might be partly responsible for the variation in haloperidol disposition between races. The influence of tobacco, ethanol, caffeine, gender, and oral contraceptive use on the debrisoquine metabolic ratio (MR) has been analyzed in panels of healthy volunteers. About 5-10\\% of European white population has a genetically determinant defect of the CYP2D6, one of the enzymes of cytochrome P-450. This defect leads to the impaired metabolism of many drugs including various psychopharmacological agents. The measurement of the hydroxylation of debrisoquine is a laboratory test which allows identifying such an individual. Patients who show an impaired hydroxylation of debrisoquine usually demonstrate severe side effects and poor outcome of psychopharmacotherapy. In practice, knowledge of a patients debrisoquine metabolic phenotype is an advantage when prescribing tricyclic antidepressants and neuroleptics, as the drug concentration will be considerably higher in slow metabolisers than in the average patient. (PMID: 8839686, 1738265, 7878155) [HMDB] Debrisoquine is an adrenergic neuron-blocking drug. Genetic and environmental factors are determinants of the interindividual and interethnic variability in drug metabolism. Thus, interethnic differences in debrisoquine hydroxylation polymorphism (Cytochrome p450, subfamily IID, polypeptide 6, CYP2D6) might be partly responsible for the variation in haloperidol disposition between races. The influence of tobacco, ethanol, caffeine, gender, and oral contraceptive use on the debrisoquine metabolic ratio (MR) has been analyzed in panels of healthy volunteers. About 5-10\\% of European white population has a genetically determinant defect of the CYP2D6, one of the enzymes of cytochrome P-450. This defect leads to the impaired metabolism of many drugs including various psychopharmacological agents. The measurement of the hydroxylation of debrisoquine is a laboratory test which allows identifying such an individual. Patients who show an impaired hydroxylation of debrisoquine usually demonstrate severe side effects and poor outcome of psychopharmacotherapy. In practice, knowledge of a patients debrisoquine metabolic phenotype is an advantage when prescribing tricyclic antidepressants and neuroleptics, as the drug concentration will be considerably higher in slow metabolisers than in the average patient. (PMID: 8839686, 1738265, 7878155). C - Cardiovascular system > C02 - Antihypertensives > C02C - Antiadrenergic agents, peripherally acting > C02CC - Guanidine derivatives C78272 - Agent Affecting Nervous System > C29747 - Adrenergic Agent > C72900 - Adrenergic Antagonist D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D013565 - Sympatholytics D002317 - Cardiovascular Agents > D000959 - Antihypertensive Agents D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents COVID info from COVID-19 Disease Map ATC code: C02CC04 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

2'-Deoxyguanosine 5'-monophosphate

C10H14N5O7P (347.0631)

2-Deoxyguanosine 5-monophosphate, also known as deoxyguanylic acid or 2-deoxy-GMP, belongs to the class of organic compounds known as purine 2-deoxyribonucleoside monophosphates. These are purine nucleotides with monophosphate group linked to the ribose moiety lacking a hydroxyl group at position 2. 2-Deoxyguanosine 5-monophosphate is a purine 2-deoxyribonucleoside 5-monophosphate having guanine as the nucleobase. It exists in all living species, ranging from bacteria to humans. Within humans, 2-deoxyguanosine 5-monophosphate participates in a number of enzymatic reactions. In particular, 2-deoxyguanosine 5-monophosphate can be converted into dGDP which is mediated by the enzyme guanylate kinase. In addition, 2-deoxyguanosine 5-monophosphate can be converted into deoxyguanosine through its interaction with the enzyme cytosolic purine 5-nucleotidase. In humans, 2-deoxyguanosine 5-monophosphate is involved in the metabolic disorder called the gout or kelley-seegmiller syndrome pathway. 2-Deoxyguanosine 5-monophosphate is a derivative of the common nucleic acid GTP, or guanosine triphosphate, in which the -OH (hydroxyl) group on the 2 carbon on the nucleotides pentose has been removed (hence the deoxy- part of the name). Additionally, the diphosphate of the name indicates that two of the phosphoryl groups of GTP have been removed, most likely by hydrolysis . [HMDB] Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

5,6-Dihydrothymine

C5H8N2O2 (128.0586)

Dihydrothymine (CAS: 696-04-8) is an intermediate breakdown product of thymine. Dihydropyrimidine dehydrogenase catalyzes the reduction of thymine into 5,6-dihydrothymine; then dihydropyrimidinase hydrolyzes 5,6-dihydrothymine into N-carbamyl-beta-alanine. Finally, beta-ureidopropionase catalyzes the conversion of N-carbamyl-beta-alanine into beta-alanine. When present at abnormally high levels, dihydrothymine can be toxic, although the mechanism of toxicity is not clear. In particular, patients with dihydropyrimidinase deficiency exhibit highly increased concentrations of 5,6-dihydrouracil and 5,6-dihydrothymine; and moderately increased concentrations of uracil and thymine can be detected in urine. Dihydropyrimidinase deficiency is a disorder that can cause neurological and gastrointestinal problems in some affected individuals. The most common neurological abnormalities that occur are intellectual disability, seizures, weak muscle tone (hypotonia), abnormally small head size (microcephaly), and autistic behaviours that affect communication and social interaction. Gastrointestinal problems that occur in dihydropyrimidinase deficiency include the backflow of acidic stomach contents into the esophagus (gastroesophageal reflux) and recurrent episodes of vomiting. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 5,6-Dihydro-5-methyluracil (Dihydrothymine), an intermediate breakdown product of thymine, comes from animal or plants. 5,6-Dihydro-5-methyluracil (Dihydrothymine) can be toxic when present at abnormally high levels[1].

Dihydrofolic acid

C19H21N7O6 (443.1553)

Dihydrofolic acid is a folic acid derivative acted upon by dihydrofolate reductase to produce tetrahydrofolic acid. It interacts with bacteria during cell division. It can be targeted with drug analogs to prevent nucleic acid synthesis. Dihydrofolic acid is also known by the name Dihydrofolate - more commonly Vitamin B9. [HMDB] Dihydrofolic acid is a folic acid derivative acted upon by dihydrofolate reductase to produce tetrahydrofolic acid. It interacts with bacteria during cell division. It can be targeted with drug analogs to prevent nucleic acid synthesis. Dihydrofolic acid is also known by the name Dihydrofolate - more commonly Vitamin B9. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Dihydrofolic acid is a folic acid derivative acted upon by dihydrofolate reductase to produce tetrahydrofolic acid.

Hypoxanthine

C5H4N4O (136.0385)

Hypoxanthine, also known as purine-6-ol or Hyp, belongs to the class of organic compounds known as purines. Purines are a bicyclic aromatic compound made up of a pyrimidine ring fused to an imidazole ring. Hypoxanthine is also classified as an oxopurine, Hypoxanthine is a naturally occurring purine derivative and a reaction intermediate in the metabolism of adenosine and in the formation of nucleic acids by the nucleotide salvage pathway. Hypoxanthine exists in all living species, ranging from bacteria to plants to humans. Hypoxanthine has been detected, but not quantified in, several different foods, such as radish (var.), mountain yams, welsh onions, greenthread tea, and common beets. Hypoxanthine is occasionally found as a constituent of nucleic acids, where it is present in the anticodon of tRNA in the form of its nucleoside inosine. Biologically, hypoxanthine can be formed a number of ways. For instance, it is one of the products of the action of xanthine oxidase on xanthine. However, more frequently xanthine is formed from oxidation of hypoxanthine by xanthine oxidoreductase. The enzyme hypoxanthine-guanine phosphoribosyltransferase converts hypoxanthine into IMP in the nucleotide salvage pathway. Hypoxanthine is also a spontaneous deamination product of adenine. Under normal circumstances hypoxanthine is readily converted to uric acid. In this process, hypoxanthine is first oxidized to xanthine, which is further oxidized to uric acid by xanthine oxidase. Molecular oxygen, the oxidant in both reactions, is reduced to H2O2 and other reactive oxygen species. In humans, uric acid is the final product of purine degradation and is excreted in the urine. Within humans, hypoxanthine participates in a number of other enzymatic reactions. In particular, hypoxanthine and ribose 1-phosphate can be biosynthesized from inosine through its interaction with the enzyme purine nucleoside phosphorylase. Hypoxanthine is also involved in the metabolic disorder called the purine nucleoside phosphorylase deficiency. Purine nucleoside phosphorylase (PNP) deficiency is a disorder of the immune system (primary immunodeficiency) characterized by recurrent infections, neurologic symptoms, and autoimmune disorders. PNP deficiency causes a shortage of white blood cells, called T-cells, that help fight infection. Affected individuals develop neurologic symptoms, such as stiff or rigid muscles (spasticity), uncoordinated movements (ataxia), developmental delay, and intellectual disability. PNP deficiency is associated with an increased risk to develop autoimmune disorders, such as autoimmune hemolytic anemia, idiopathic thrombocytopenic purpura (ITP), autoimmune neutropenia, thyroiditis, and lupus. [Spectral] Hypoxanthine (exact mass = 136.03851) and Adenine (exact mass = 135.0545) were not completely separated on HPLC under the present analytical conditions as described in AC$XXX. Additionally some of the peaks in this data contains dimers and other unidentified ions. Occurs widely in plant and animal tissue (CCD). Hypoxanthine is found in many foods, some of which are japanese chestnut, parsnip, okra, and horned melon. Hypoxanthine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=68-94-0 (retrieved 2024-07-02) (CAS RN: 68-94-0). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Hypoxanthine, a purine derivative, is a potential free radical generator and could be used as an indicator of hypoxia. Hypoxanthine, a purine derivative, is a potential free radical generator and could be used as an indicator of hypoxia. Hypoxanthine, a purine derivative, is a potential free radical generator and could be used as an indicator of hypoxia.

Indoleacetic acid

C10H9NO2 (175.0633)

Indoleacetic acid (IAA) is a breakdown product of tryptophan metabolism and is often produced by the action of bacteria in the mammalian gut. Higher levels of IAA are associated with bacteria from Clostridium species including C. stricklandii, C. lituseburense, C. subterminale, and C. putrefaciens (PMID: 12173102). IAA can be found in Agrobacterium, Azospirillum, Bacillus, Bradyrhizobium, Clostridium, Enterobacter, Pantoea, Pseudomonas, Rhizobium (PMID: 12173102, PMID: 17555270, PMID: 12147474, PMID: 19400643, PMID: 9450337, PMID: 21397014) (https://link.springer.com/chapter/10.1007/978-1-4612-3084-7_7) (https://escholarship.org/uc/item/1bf1b5m3). Some endogenous production of IAA in mammalian tissues also occurs. It may be produced by the decarboxylation of tryptamine or the oxidative deamination of tryptophan. IAA frequently occurs at low levels in urine and has been found in elevated levels in the urine of patients with phenylketonuria (PMID: 13610897). IAA has also been identified as a uremic toxin according to the European Uremic Toxin Working Group (PMID: 22626821). Using material extracted from human urine, it was discovered by Kogl in 1933 that indoleacetic acid is also an important plant hormone (PMID: 13610897). Specifically, IAA is a member of the group of phytohormones called auxins. IAA is generally considered to be the most important native auxin. Plant cells synthesize IAA from tryptophan (Wikipedia). IAA and some derivatives can be oxidized by horseradish peroxidase (HRP) into cytotoxic species. IAA is only toxic after oxidative decarboxylation; the effect of IAA/HRP is thought to be due in part to the formation of methylene-oxindole, which may conjugate with DNA bases and protein thiols. IAA/HRP could be used as the basis for targeted cancer, a potential new role for plant auxins in cancer therapy (PMID: 11163327). 1h-indol-3-ylacetic acid, also known as (indol-3-yl)acetate or heteroauxin, belongs to indole-3-acetic acid derivatives class of compounds. Those are compounds containing an acetic acid (or a derivative) linked to the C3 carbon atom of an indole. 1h-indol-3-ylacetic acid is slightly soluble (in water) and a weakly acidic compound (based on its pKa). 1h-indol-3-ylacetic acid is a mild, odorless, and sour tasting compound and can be found in a number of food items such as sweet bay, chinese bayberry, winter squash, and linden, which makes 1h-indol-3-ylacetic acid a potential biomarker for the consumption of these food products. 1h-indol-3-ylacetic acid can be found primarily in most biofluids, including blood, feces, saliva, and urine, as well as throughout most human tissues. 1h-indol-3-ylacetic acid exists in all living species, ranging from bacteria to humans. In humans, 1h-indol-3-ylacetic acid is involved in the tryptophan metabolism. Moreover, 1h-indol-3-ylacetic acid is found to be associated with appendicitis and irritable bowel syndrome. 1h-indol-3-ylacetic acid is a non-carcinogenic (not listed by IARC) potentially toxic compound. Chronic Exposure: Kidney dialysis is usually needed to relieve the symptoms of uremic syndrome until normal kidney function can be restored. CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3375; ORIGINAL_PRECURSOR_SCAN_NO 3371 CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3366; ORIGINAL_PRECURSOR_SCAN_NO 3363 CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3365; ORIGINAL_PRECURSOR_SCAN_NO 3361 CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3395; ORIGINAL_PRECURSOR_SCAN_NO 3391 DATA_PROCESSING MERGING RMBmix ver. 0.2.7; CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3366; ORIGINAL_PRECURSOR_SCAN_NO 3363 CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3369; ORIGINAL_PRECURSOR_SCAN_NO 3366 CONFIDENCE standard compound; INTERNAL_ID 190; DATASET 20200303_ENTACT_RP_MIX501; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3385; ORIGINAL_PRECURSOR_SCAN_NO 3380 D006133 - Growth Substances > D010937 - Plant Growth Regulators > D007210 - Indoleacetic Acids Acquisition and generation of the data is financially supported in part by CREST/JST. IPB_RECORD: 275; CONFIDENCE confident structure CONFIDENCE standard compound; INTERNAL_ID 2796 CONFIDENCE standard compound; INTERNAL_ID 166 COVID info from COVID-19 Disease Map Corona-virus KEIO_ID I038 Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 3-Indoleacetic acid (Indole-3-acetic acid) is the most common natural plant growth hormone of the auxin class. It can be added to cell culture medium to induce plant cell elongation and division. 3-Indoleacetic acid (Indole-3-acetic acid) is the most common natural plant growth hormone of the auxin class. It can be added to cell culture medium to induce plant cell elongation and division.

Pregnenolone

C21H32O2 (316.2402)

Pregnenolone is a derivative of cholesterol, the product of cytochrome P450 side-chain cleavage (EC 1.14.15.6, CYP11A1. This reaction consists of three consecutive monooxygenations, a 22-hydroxylation, a 20-hydroxylation, and the cleavage of the C20-C22 bond, yielding pregnenolone. Pregnenolone is the precursor to gonadal steroid hormones and the adrenal corticosteroids. This reaction occurs in steroid hormone-producing tissues such as the adrenal cortex, corpus luteum, and placenta. The most notable difference between the placenta and other steroidogenic tissues is that electron supply to CYP11A1 limits the rate at which cholesterol is converted into pregnenolone in the placenta. The limiting component for electron delivery to CYP11A1 is the concentration of adrenodoxin reductase in the mitochondrial matrix which is insufficient to maintain the adrenodoxin pool in a fully reduced state. Pregnenolone is also a neurosteroid, and is produced in the spinal cord; CYP11A1 is the key enzyme catalyzing the conversion of cholesterol into pregnenolone, the rate-limiting step in the biosynthesis of all classes of steroids, and has been localized in sensory networks of the spinal cord dorsal horn. In the adrenal glomerulosa cell, angiotensin II, one of the major physiological regulators of mineralocorticoid synthesis, appears to affect most of the cholesterol transfer to the mitochondrial outer membrane and many steps in the transport to the inner membrane. Thus, it exerts a powerful control over the use of cholesterol for aldosterone production (PMID: 17222962, 15823613, 16632873, 15134809). C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Pregnenolone (3β-Hydroxy-5-pregnen-20-one) is a powerful neurosteroid, the main precursor of various steroid hormones including steroid ketones. Pregnenolone acts as a signaling-specific inhibitor of cannabinoid CB1 receptor, inhibits the effects of tetrahydrocannabinol (THC) that are mediated by the CB1 receptors. Pregnenolone can protect the brain from cannabis intoxication[1][2]. Pregnenolone is also a TRPM3 channel activator, and also can weakly activate TRPM1 channels[3]. Pregnenolone (3β-Hydroxy-5-pregnen-20-one) is a powerful neurosteroid, the main precursor of various steroid hormones including steroid ketones. Pregnenolone acts as a signaling-specific inhibitor of cannabinoid CB1 receptor, inhibits the effects of tetrahydrocannabinol (THC) that are mediated by the CB1 receptors. Pregnenolone can protect the brain from cannabis intoxication[1][2]. Pregnenolone is also a TRPM3 channel activator, and also can weakly activate TRPM1 channels[3].

Pyridoxine

C8H11NO3 (169.0739)

Pyridoxine, also known vitamin B6, is commonly found in food and is used as a dietary supplement. Pyridoxine is an essential nutrient, meaning the body cannot synthesize it, and it must be obtained from the diet. Sources in the diet include fruit, vegetables, and grain. Although pyridoxine and vitamin B6 are still frequently used as synonyms, especially by medical researchers, this practice is sometimes misleading (PMID: 2192605). Technically, pyridoxine is one of the compounds that can be called vitamin B6 or it is a member of the family of B6 vitamins. Healthy human blood levels of pyridoxine are 2.1 - 21.7 ng/mL. Pyridoxine is readily converted to pyridoxal phosphate which is a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids and aminolevulinic acid. Pyridoxine assists in the balancing of sodium and potassium as well as promoting red blood cell production. Therefore pyridoxine is required by the body to make amino acids, carbohydrates, and lipids. It is linked to cancer immunity and helps fight the formation of homocysteine. It has been suggested that pyridoxine might help children with learning difficulties, and may also prevent dandruff, eczema, and psoriasis. In addition, pyridoxine can help balance hormonal changes in women and aid in immune system. Lack of pyridoxine may cause anemia, nerve damage, seizures, skin problems, and sores in the mouth (Wikipedia). Deficiency of pyridoxine, though rare because of widespread distribution in foods, leads to the development of peripheral neuritis in adults and affects the central nervous system in children (DOSE - 3rd edition). As a supplement pyridoxine is used to treat and prevent pyridoxine deficiency, sideroblastic anaemia, pyridoxine-dependent epilepsy, certain metabolic disorders, problems from isoniazid, and certain types of mushroom poisoning. Pyridoxine in combination with doxylamine is used as a treatment for morning sickness in pregnant women. Found in rice husks, cane molasses, yeast, wheat germ and cod liver oils. Vitamin, dietary supplement, nutrient. Pyridoxine is one of the compounds that can be called vitamin B6, along with pyridoxal and pyridoxamine. It differs from pyridoxamine by the substituent at the 4 position. It is often used as pyridoxine hydrochloride. Pyridoxine in the urine is a biomarker for the consumption of soy products. Acquisition and generation of the data is financially supported in part by CREST/JST. A - Alimentary tract and metabolism > A11 - Vitamins D018977 - Micronutrients > D014815 - Vitamins COVID info from COVID-19 Disease Map KEIO_ID P053 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Pyridoxine (Pyridoxol) is a pyridine derivative. Pyridoxine exerts antioxidant effects in cell model of Alzheimer's disease via the Nrf-2/HO-1 pathway. Pyridoxine (Pyridoxol) is a pyridine derivative. Pyridoxine exerts antioxidant effects in cell model of Alzheimer's disease via the Nrf-2/HO-1 pathway.

Thymine

C5H6N2O2 (126.0429)

Thymine, also known as 5-methyluracil, belongs to the class of organic compounds known as hydroxypyrimidines. These are organic compounds containing a hydroxyl group attached to a pyrimidine ring. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions. Thymine was first isolated in 1893 by Albrecht Kossel and Albert Neumann from calves thymus glands, hence its name. Thymine is one of the 4 nuelcoebases found in DNA and is essential to all life. Thymine exists in all living species, ranging from bacteria to plants to humans. Thymine combined with deoxyribose creates the nucleoside deoxythymidine (also called thymidine) which when phosphorylated to dTDP can be incorporated into DNA via DNA polymerases. Thymidine can be phosphorylated with up to three phosphoric acid groups, producing dTMP (deoxythymidine monophosphate) dTDP and/or dTTP. In RNA thymine is replaced with uracil in most cases. In DNA, thymine binds to adenine via two hydrogen bonds to assist in stabilizing the nucleic acid structures. Within humans, thymine participates in a number of enzymatic reactions. In particular, thymine and deoxyribose 1-phosphate can be biosynthesized from thymidine through its interaction with the enzyme thymidine phosphorylase. In addition, thymine can be converted into dihydrothymine; which is mediated by the enzyme dihydropyrimidine dehydrogenase [NADP(+)]. One of the pyrimidine bases of living matter. Derivation: Hydrolysis of deoxyribonucleic acid, from methylcyanoacetylurea by catalytic reduction. Use: Biochemical research. (Hawleys Condensed Chemical Dictionary) Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus KEIO_ID T015 Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Thymine is one of the four nucleobases in the nucleic acid of DNA and can be a target for actions of 5-fluorouracil (5-FU) in cancer treatment, with a Km of 2.3 μM. Thymine is one of the four nucleobases in the nucleic acid of DNA and can be a target for actions of 5-fluorouracil (5-FU) in cancer treatment, with a Km of 2.3 μM. Thymine is one of the four nucleobases in the nucleic acid of DNA and can be a target for actions of 5-fluorouracil (5-FU) in cancer treatment, with a Km of 2.3 μM.

Deoxyinosine

C10H12N4O4 (252.0859)

Deoxyinosine is a nucleoside that is formed when hypoxanthine is attached to a deoxyribose ring (also known as a ribofuranose) via a beta-N9-glycosidic bond. Deoxyinosine is found in DNA while inosine is found in RNA. Inosine is a nucleic acid important for RNA editing. Adenosine deaminase (ADA) catalyzes the conversion of adenosine and deoxyadenosine to inosine and deoxyinosine, respectively. ADA-deficient individuals suffer from severe combined immunodeficiency (SCID) and are unable to produce significant numbers of mature T or B lymphocytes. This occurs as a consequence of the accumulation of ADA substrates or their metabolites. Inosine is also an intermediate in a chain of purine nucleotides reactions required for muscle movements. Moreover, deoxyinosine is found to be associated with purine nucleoside phosphorylase (PNP) deficiency, which is an inborn error of metabolism. Isolated from Phaseolus vulgaris (kidney bean). 2-Deoxyinosine is found in pulses, yellow wax bean, and green bean. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 2’-deoxyadenosine inhibits the growth of human colon-carcinoma cell lines and is found to be associated with purine nucleoside phosphorylase (PNP) deficiency. 2’-deoxyadenosine inhibits the growth of human colon-carcinoma cell lines and is found to be associated with purine nucleoside phosphorylase (PNP) deficiency.

Estrone

C18H22O2 (270.162)

Estrone is a major mammalian estrogen. The conversion of the natural C19 steroids, testosterone and androstenedione into estrone is dependent on a complex key reaction catalyzed by the cytochrome P450 aromatase (EC 1.14.14.1, unspecific monooxygenase), which is expressed in many tissues of the adult human (e.g. ovary, fat tissue), but not in the liver. The ovaries after menopause continue to produce androstenedione and testosterone in significant amounts and these androgens are converted in fat, muscle, and skin into estrone. When women between the ages of 45 and 64 years have prophylactic oophorectomy (when hysterectomy is performed for benign disease to prevent the development of ovarian cancer), evidence suggests that oophorectomy increases the subsequent risk of coronary heart disease (CHD) and osteoporosis. Whereas 14,000 women die of ovarian cancer every year nearly 490,000 women die of heart disease and 48,000 women die within 1 year after hip fracture. Therefore, the decision to perform prophylactic oophorectomy should be approached with great caution for the majority of women who are at low risk of developing ovarian cancer. Steroid sulfatase (EC 3.1.6.2, STS) hydrolyzes steroid sulfates, such as estrone sulfate to estrone which can be converted to steroids with potent estrogenic properties, that is, estradiol; STS activity is much higher in breast tumors and high levels of STS mRNA expression in tumors are associated with a poor prognosis. The biological roles of estrogens in tumorigenesis are certainly different between the endometrium and breast, although both are considered "estrogen-dependent tissues". 17beta-hydroxysteroid dehydrogenases (EC 1.1.1.62, 17-HSDs) are enzymes involved in the formation of active sex steroids. estrone is interconverted by two enzymes 17-HSD types. Type 1 converts estrone to estradiol and Type 2 catalyzes the reverse reaction. (PMID: 17653961, 17513923, 17470679, 17464097). CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8887; ORIGINAL_PRECURSOR_SCAN_NO 8882 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8944; ORIGINAL_PRECURSOR_SCAN_NO 8942 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8923; ORIGINAL_PRECURSOR_SCAN_NO 8921 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8903; ORIGINAL_PRECURSOR_SCAN_NO 8901 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4817; ORIGINAL_PRECURSOR_SCAN_NO 4815 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4834; ORIGINAL_PRECURSOR_SCAN_NO 4832 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4774; ORIGINAL_PRECURSOR_SCAN_NO 4772 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4796; ORIGINAL_PRECURSOR_SCAN_NO 4794 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8953; ORIGINAL_PRECURSOR_SCAN_NO 8951 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4804; ORIGINAL_PRECURSOR_SCAN_NO 4803 CONFIDENCE standard compound; INTERNAL_ID 859; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8970; ORIGINAL_PRECURSOR_SCAN_NO 8969 A trace constituent of plant tissues, e.g. seeds of date (Phoenix dactylifera) and pomegranate (Punica granatum). Estrone is found in many foods, some of which are cauliflower, sweet rowanberry, carrot, and coconut. G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03C - Estrogens > G03CA - Natural and semisynthetic estrogens, plain G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03C - Estrogens > G03CC - Estrogens, combinations with other drugs D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones > D004967 - Estrogens C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen CONFIDENCE standard compound; INTERNAL_ID 2391 COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Estrone (E1) is a natural estrogenic hormone. Estrone is the main representative of the endogenous estrogens and is produced by several tissues, especially adipose tissue. Estrone is the result of the process of aromatization of androstenedione that occurs in fat cells[1][2]. Estrone (E1) is a natural estrogenic hormone. Estrone is the main representative of the endogenous estrogens and is produced by several tissues, especially adipose tissue. Estrone is the result of the process of aromatization of androstenedione that occurs in fat cells[1][2].

dGDP

C10H15N5O10P2 (427.0294)

dGDP is a derivative of the common nucleic acid GTP, or guanosine triphosphate, in which the -OH (hydroxyl) group on the 2 carbon on the nucleotides pentose has been removed (hence the deoxy- part of the name). Additionally, the diphosphate of the name indicates that one of the phosphoryl groups of GTP has been removed, most likely by hydrolysis . [HMDB]. dGDP is found in many foods, some of which are tea, black chokeberry, european plum, and roman camomile. dGDP is a derivative of the common nucleic acid GTP, or guanosine triphosphate, in which the -OH (hydroxyl) group on the 2 carbon on the nucleotides pentose has been removed (hence the deoxy- part of the name). Additionally, the diphosphate of the name indicates that one of the phosphoryl groups of GTP has been removed, most likely by hydrolysis (Wikipedia). Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

2'-Deoxyinosine triphosphate

C10H15N4O13P3 (491.9848)

2-Deoxyinosine triphosphate (dITP) is a deoxyribonucleotide that may be generated from dATP by slow, non-enzymatic hydrolysis or by reduction of ITP. Normally, the cellular dITP concentration is very low. The inability to demonstrate the synthesis of dITP in cellular preparations has been attributed to the presence in the cytoplasm of an inosine triphosphatase pyrophosphatase (ITPase, EC 3.6.1.19), an enzyme that does not permit accumulation of these nucleotides. dITP can be incorporated into DNA by polymerases. The deoxyribonucleotide dITP behaves as a dGTP analogue and is incorporated opposite cytosine with about 50\\% efficiency. Both isolated nuclei and purified DNA polymerases rapidly incorporated dITP into DNA. In the presence of ATP, dITP is stabilized in extracts of nuclei. dITP exist in all cells and is potentially mutagenic, and the levels of these nucleotides are controlled by ITPase. The function of this ubiquitous protein family is proposed to be the elimination of minor potentially mutagenic or clastogenic purine nucleoside triphosphates from the cell. (PMID: 11278832) [HMDB] 2-Deoxyinosine triphosphate (dITP) is a deoxyribonucleotide that may be generated from dATP by slow, non-enzymatic hydrolysis or by reduction of ITP. Normally, the cellular dITP concentration is very low. The inability to demonstrate the synthesis of dITP in cellular preparations has been attributed to the presence in the cytoplasm of an inosine triphosphatase pyrophosphatase (ITPase, EC 3.6.1.19), an enzyme that does not permit accumulation of these nucleotides. dITP can be incorporated into DNA by polymerases. The deoxyribonucleotide dITP behaves as a dGTP analogue and is incorporated opposite cytosine with about 50\\% efficiency. Both isolated nuclei and purified DNA polymerases rapidly incorporated dITP into DNA. In the presence of ATP, dITP is stabilized in extracts of nuclei. dITP exist in all cells and is potentially mutagenic, and the levels of these nucleotides are controlled by ITPase. The function of this ubiquitous protein family is proposed to be the elimination of minor potentially mutagenic or clastogenic purine nucleoside triphosphates from the cell. (PMID: 11278832). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Maltotriose

C18H32O16 (504.169)

Maltotriose is a trisaccharide (three-part sugar) consisting of three glucose molecules linked with α-1,4 glycosidic bonds. It is most commonly produced by the digestive enzyme alpha-amylase (a common enzyme in human saliva) on amylose in starch. The creation of both maltotriose and maltose during this process is due to the random manner in which alpha amylase hydrolyses α-1,4 glycosidic bonds. It is the shortest chain oligosaccharide that can be classified as maltodextrin. Maltotriose belongs to the class of organic compounds known as oligosaccharides. These are carbohydrates made up of 3 to 10 monosaccharide units linked to each other through glycosidic bonds. Maltotriose is a common oligosaccharide metabolite found in human urine after maltose ingestion or infusion (PMID:6645121). Maltotriose is increased in glycogen storage disease II (OMIM: 232300) due to a mutation of the enzyme alpha-1,4-glucosidase (EC 3.2.1.20) (PMID:4286143). Constituent of corn syrup. Amylolysis production from starch. Maltooligosaccharide mixtures are important food additives (sweeteners, gelling agents and viscosity modifiers) Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Maltotriose, the second most abundant sugar present in brewing, is an inducer of the maltose regulon of Escherichia coli. Maltotriose can induce beta-galactosidase synthesis[1][2]. Maltotriose, the second most abundant sugar present in brewing, is an inducer of the maltose regulon of Escherichia coli. Maltotriose can induce beta-galactosidase synthesis[1][2].

Deoxyguanosine

C10H13N5O4 (267.0967)

Deoxyguanosine, also known as dG, belongs to the class of organic compounds known as purine 2-deoxyribonucleosides. Purine 2-deoxyribonucleosides are compounds consisting of a purine linked to a ribose which lacks a hydroxyl group at position 2‚Äô. Deoxyguanosine is a nucleoside consisting of the base guanine and the sugar deoxyribose. Deoxyguanosine is one of the four deoxyribonucleosides that make up DNA. Deoxyguanosine exists in all living species, ranging from bacteria to plants to humans. Deoxyguanosine participates in a number of enzymatic reactions. In particular, deoxyguanosine can be biosynthesized from 2-deoxyguanosine 5-monophosphate through the enzyme known as cytosolic purine 5-nucleotidase. In addition, deoxyguanosine can be converted into 2-deoxyguanosine 5-monophosphate (dGMP); which is mediated by the enzyme deoxyguanosine kinase. Deoxyguanosine is involved in the rare, inherited metabolic disorder called the purine nucleoside phosphorylase deficiency (PNP deficiency). In particular PNP deficiency is characterized by elevated levels of dGTP (deoxyguanosine triphosphate). PNP accounts for approximately 4\\\\% of patients with severe combined immunodeficiency (PMID: 1931007). PNP-deficient patients suffer from recurrent infections, usually beginning in the first year of life. Two thirds of patients have evidence of neurologic disorders with spasticity, developmental delay and mental retardation. Deoxyguanosine can be converted to 8-hydroxy-deoxyguanosine (8-OHdG) due to hydroxyl radical attack at the C8 of guanine. 8-hydroxy-deoxyguanosine is a sensitive marker of the DNA damage This damage, if left unrepaired, has been proposed to contribute to mutagenicity and cancer promotion. Isolated from plants, e.g. Phaseolus vulgaris (kidney bean) COVID info from COVID-19 Disease Map KEIO_ID D057; [MS2] KO008942 KEIO_ID D057 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 2’-Deoxyguanosine (Deoxyguanosine) is a purine nucleoside with a variety of biological activities. 2’-Deoxyguanosine can induce DNA division in mouse thymus cells. 2’-Deoxyguanosine is a potent cell division inhibitor in plant cells[1][2][3]. 2'-Deoxyguanosine (Deoxyguanosine) is deoxyguanosine.

Xanthosine

C10H12N4O6 (284.0757)

Xanthosine, also known as xanthine riboside, belongs to the class of organic compounds known as purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl moiety. Xanthosine is a nucleoside derived from xanthine and ribose. Xanthosine exists in all living species, ranging from bacteria to plants to humans. In plants xanthosine is the biosynthetic precursor to 7-methylxanthosine which is produced by the action of the enzyme known as 7-methylxanthosine synthase. 7-Methylxanthosine in turn is the precursor to theobromine (the active alkaloid in chocolate), which in turn is the precursor to caffeine, the active alkaloid in coffee and tea. Within humans, xanthosine participates in a number of enzymatic reactions. In particular, xanthosine can be biosynthesized from xanthylic acid; which is catalyzed by the enzyme cytosolic purine 5-nucleotidase. In addition, xanthosine can be converted into xanthine and ribose 1-phosphate; which is mediated by the enzyme purine nucleoside phosphorylase. Xanthosine monophosphate (XMP) is an intermediate in purine metabolism, formed from IMP (inosine monophosphate). Biological Source: Production by guanine-free mutants of bacteria e.g. Bacillus subtilis, Aerobacter aerogenesand is also reported from seeds of Trifolium alexandrinum Physical Description: Prismatic cryst. (H2O) (Chemnetbase) The deamination product of guanosine; Xanthosine monophosphate is an intermediate in purine metabolism, formed from IMP, and forming GMP.; Xanthylic acid can be used in quantitative measurements of the Inosine monophosphate dehydrogenase enzyme activities in purine metabolism, as recommended to ensure optimal thiopurine therapy for children with acute lymphoblastic leukaemia (ALL). (PMID: 16725387). Xanthosine is found in many foods, some of which are calabash, rambutan, apricot, and pecan nut. Acquisition and generation of the data is financially supported in part by CREST/JST. CONFIDENCE standard compound; INTERNAL_ID 126 COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Xanthosine is a nucleoside derived from xanthine and ribose. Xanthosine can increase mammary stem cell population and milk production in cattle and goats[1]. Xanthosine is a nucleoside derived from xanthine and ribose. Xanthosine can increase mammary stem cell population and milk production in cattle and goats[1]. Xanthosine is a nucleoside derived from xanthine and ribose. Xanthosine can increase mammary stem cell population and milk production in cattle and goats[1].

1,4-Dithiothreitol

C4H10O2S2 (154.0122)

Dithiothreitol (DTT) is the common name for a small-molecule redox reagent known as Clelands reagent. DTTs formula is C4H10O2S2 and the molecular structure of its reduced form is shown at the right; its oxidized form is a disulfide-bonded 6-membered ring (shown below). Its name derives from the four-carbon sugar, threose. DTT has an epimeric (sister) compound, dithioerythritol. A common use of DTT is as a reducing or "deprotecting" agent for thiolated DNA. The terminal sulfur atoms of thiolated DNA have a tendency to form dimers in solution, especially in the presence of oxygen. Dimerization greatly lowers the efficiency of subsequent coupling reactions such as DNA immobilization on gold in biosensors. Typically DTT is mixed with a DNA solution and allowed to react, and then is removed by filtration (for the solid catalyst) or by chromatography (for the liquid form). The DTT removal procedure is often called "desalting.". DTT is frequently used to reduce the disulfide bonds of proteins and, more generally, to prevent intramolecular and intermolecular disulfide bonds from forming between cysteine residues of proteins. However, even DTT cannot reduce buried (solvent-inaccessible) disulfide bonds, so reduction of disulfide bonds is sometimes carried out under denaturing conditions (e.g., at high temperatures, or in the presence of a strong denaturant such as 6 M guanidinium hydrochloride, 8 M urea, or 1\\% sodium dodecylsulfate). Conversely, the solvent exposure of different disulfide bonds can be assayed by their rate of reduction in the presence of DTT. DTT can also be used as an oxidizing agent. Its principal advantage is that effectively no mixed-disulfide species are populated, in contrast to other agents such as glutathione. In very rare cases, a DTT adduct may be formed, i.e., the two sulfur atoms of DTT may form disulfide bonds to different sulfur atoms; in such cases, DTT cannot cyclize since it has no remaining free thiols. Due to air oxidation, DTT is a relatively unstable compound whose useful life can be extended by refrigeration and handling in an inert atmosphere. Since protonated sulfurs have lowered nucleophilicities, DTT becomes less potent as the pH lowers. Tris(2-carboxyethyl)phosphine HCl (TCEP hydrochloride) is an alternative which is more stable and works even at low pH. Dithiothreitol (DTT) is the common name for a small-molecule redox reagent known as Clelands reagent. DTT has an epimeric compound, dithioerythritol. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

dIMP

C10H13N4O7P (332.0522)

dIMP is a deoxyribonucleoside and is considered a derivative of the nucleoside inosine, differing from the latter by the replacement of a hydroxyl group (-OH) by hydrogen (-H) at the 2 position of its ribose sugar moiety. The hydrolytic deamination of dAMP residues in DNA yields dIMP residues. The deamination of adenine residues in DNA generates hypoxanthine, which is mutagenic since it can pair not only with thymine but also with cytosine and therefore would result in A-T to G-C transitions after DNA replication. Hypoxanthine DNA glycosylase (EC 3.2.2.15) excises hypoxanthine from DNA containing dIMP residues in mammalian cells. (PMID: 10684927, 8016081) [HMDB] dIMP is a deoxyribonucleoside and is considered a derivative of the nucleoside inosine, differing from the latter by the replacement of a hydroxyl group (-OH) by hydrogen (-H) at the 2 position of its ribose sugar moiety. The hydrolytic deamination of dAMP residues in DNA yields dIMP residues. The deamination of adenine residues in DNA generates hypoxanthine, which is mutagenic since it can pair not only with thymine but also with cytosine and therefore would result in A-T to G-C transitions after DNA replication. Hypoxanthine DNA glycosylase (EC 3.2.2.15) excises hypoxanthine from DNA containing dIMP residues in mammalian cells. (PMID: 10684927, 8016081). Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Retinal

C20H28O (284.214)

A carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration. [HMDB]. Retinal is found in many foods, some of which are flaxseed, pepper (c. baccatum), climbing bean, and other soy product. Retinal is a carotenoid constituent of visual pigments. It is the oxidized form of retinol which functions as the active component of the visual cycle. It is bound to the protein opsin forming the complex rhodopsin. When stimulated by visible light, the retinal component of the rhodopsin complex undergoes isomerization at the 11-position of the double bond to the cis-form; this is reversed in "dark" reactions to return to the native trans-configuration. D020011 - Protective Agents > D000975 - Antioxidants > D002338 - Carotenoids CONFIDENCE standard compound; INTERNAL_ID 142

3-Methoxytyramine

C9H13NO2 (167.0946)

3-methoxytyramine, also known as 4-(2-amino-Ethyl)-2-methoxy-phenol or 3-O-Methyldopamine, is classified as a member of the Methoxyphenols. Methoxyphenols are compounds containing a methoxy group attached to the benzene ring of a phenol moiety. 3-methoxytyramine is considered to be slightly soluble (in water) and acidic. 3-methoxytyramine can be found primarily in human brain and most tissues tissues; and in blood, cerebrospinal fluid (csf) or urine. Within a cell, 3-methoxytyramine is primarily located in the cytoplasm The O-methylated derivative of dopamine. Dopamine is methylated by catechol-O-methyltransferase (COMT) to make 3-Methoxytyramine. This compound can be broken down to homovanillic acid by monoamine oxidase and aldehyde dehydrogenase. Elevated concentrations of this compound are indicated for a variety of brain and carcinoid tumors as well as certain mental disorders. [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 3-Methoxytyramine, a well known extracellular metabolite of 3-hydroxytyramine/dopamine, is a neuromodulator.

Uracil

C4H4N2O2 (112.0273)

Uracil, also known as U, belongs to the class of organic compounds known as pyrimidones. Pyrimidones are compounds that contain a pyrimidine ring, which bears a ketone. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions. Uracil is a common naturally occurring pyrimidine found in RNA. It base pairs with adenine and is replaced by thymine in DNA. Uracil is one of the four nucleobases in RNA that are represented by the letters A, G, C and U. Methylation of uracil produces thymine. The name "uracil" was coined in 1885 by the German chemist Robert Behrend, who was attempting to synthesize derivatives of uric acid. Originally discovered in 1900, uracil was isolated by hydrolysis of yeast nuclein that was found in bovine thymus and spleen, herring sperm, and wheat germ. Uracil exists in all living species, ranging from bacteria to plants to humans. Uracils use in the body is to help carry out the synthesis of many enzymes necessary for cell function through bonding with riboses and phosphates. Uracil serves as an allosteric regulator and a coenzyme for many important biochemical reactions. Uracil (via the nucleoside uridine) can be phosphorylated by various kinases to produce UMP, UDP and UTP. UDP and UTP regulate carbamoyl phosphate synthetase II (CPSase II) activity in animals. Uracil is also involved in the biosynthesis of polysaccharides and in the transport of sugars containing aldehydes. Within humans, uracil participates in a number of enzymatic reactions. In particular, uracil and ribose 1-phosphate can be biosynthesized from uridine; which is mediated by the enzyme uridine phosphorylase 2. In addition, uracil can be converted into dihydrouracil through the action of the enzyme dihydropyrimidine dehydrogenase [NADP(+)]. Uracil is rarely found in DNA, and this may have been an evolutionary change to increase genetic stability. This is because cytosine can deaminate spontaneously to produce uracil through hydrolytic deamination. Therefore, if there were an organism that used uracil in its DNA, the deamination of cytosine (which undergoes base pairing with guanine) would lead to formation of uracil (which would base pair with adenine) during DNA synthesis. Uracil can be used for drug delivery and as a pharmaceutical. When elemental fluorine reacts with uracil, it produces 5-fluorouracil. 5-Fluorouracil is an anticancer drug (antimetabolite) that mimics uracil during the nucleic acid (i.e. RNA) synthesis and transcription process. Because 5-fluorouracil is similar in shape to, but does not undergo the same chemistry as, uracil, the drug inhibits RNA replication enzymes, thereby blocking RNA synthesis and stopping the growth of cancerous cells. Uracil is a common and naturally occurring pyrimidine derivative. Originally discovered in 1900, it was isolated by hydrolysis of yeast nuclein that was found in bovine thymus and spleen, herring sperm, and wheat germ. It is a planar, unsaturated compound that has the ability to absorb light. Uracil. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=66-22-8 (retrieved 2024-07-01) (CAS RN: 66-22-8). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Uracil is a common and naturally occurring pyrimidine derivative and one of the four nucleobases in the nucleic acid of RNA. Uracil is a common and naturally occurring pyrimidine derivative and one of the four nucleobases in the nucleic acid of RNA. Uracil is a common and naturally occurring pyrimidine derivative and one of the four nucleobases in the nucleic acid of RNA.

Taurocholate

C26H45NO7S (515.2917)

Taurocholic acid is a bile acid and is the product of the conjugation of cholic acid with taurine. Its sodium salt is the chief ingredient of the bile of carnivorous animals. Bile acids are steroid acids found predominantly in the bile of mammals. The distinction between different bile acids is minute, depending only on the presence or absence of hydroxyl groups on positions 3, 7, and 12. Bile acids are physiological detergents that facilitate excretion, absorption, and transport of fats and sterols in the intestine and liver. Bile acids are also steroidal amphipathic molecules derived from the catabolism of cholesterol. They modulate bile flow and lipid secretion, are essential for the absorption of dietary fats and vitamins, and have been implicated in the regulation of all the key enzymes involved in cholesterol homeostasis. Bile acids recirculate through the liver, bile ducts, small intestine, and portal vein to form an enterohepatic circuit. They exist as anions at physiological pH, and consequently require a carrier for transport across the membranes of the enterohepatic tissues. The unique detergent properties of bile acids are essential for the digestion and intestinal absorption of hydrophobic nutrients. Bile acids have potent toxic properties (e.g. membrane disruption) and there are a plethora of mechanisms to limit their accumulation in blood and tissues (PMID: 11316487, 16037564, 12576301, 11907135). Taurocholic acid, as with all bile acids, acts as a detergent to solubilize fats for absorption and is itself absorbed. It is used as a cholagogue and choleretic (a bile purging agent). Hydrolysis of taurocholic acid yields taurine, a nonessential amino acid. Taurocholic acid is one of the main components of urinary nonsulfated bile acids in biliary atresia. Raised levels of taurocholate in fetal serum in obstetric cholestasis may result in the development of a fetal dysrhythmia and sudden intra-uterine death (PMID: 3944741, 11256973). Taurocholic acid. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=81-24-3 (retrieved 2024-07-01) (CAS RN: 81-24-3). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). Taurocholic acid (N-Choloyltaurine) is a bile acid involved in the emulsification of fats. Taurocholic acid (N-Choloyltaurine) is a bile acid involved in the emulsification of fats.

Phenylacetaldehyde

C8H8O (120.0575)

Phenylacetaldehyde is one important oxidation-related aldehyde. Exposure to styrene gives phenylacetaldehyde as a secondary metabolite. Styrene has been implicated as reproductive toxicant, neurotoxicant, or carcinogen in vivo or in vitro. Phenylacetaldehyde could be formed by diverse thermal reactions during the cooking process together with C8 compounds is identified as a major aroma- active compound in cooked pine mushroom. Phenylacetaldehyde is readily oxidized to phenylacetic acid. Therefore will eventually be hydrolyzed and oxidized to yield phenylacetic acid that will be excreted primarily in the urine in conjugated form. (PMID: 16910727, 7818768, 15606130). Found in some essential oils, e.g. Citrus subspecies, Tagetes minuta (Mexican marigold) and in the mushroom Phallus impudicus (common stinkhorn). Flavouring ingredient COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Inosine 5'-monophosphate (IMP)

C10H13N4O8P (348.0471)

Inosinic acid, also known as inosine monophosphate, IMP, 5-inosinate or 5-IMP, belongs to the class of organic compounds known as purine ribonucleoside monophosphates. These are nucleotides consisting of a purine base linked to a ribose to which one monophosphate group is attached. IMP is also classified as a nucleotide (a nucleoside monophosphate). Inosinic acid exists in all living species, ranging from bacteria to plants to humans. IMP is widely used as a flavor enhancer. In the food industry it is known as E number reference E630. Inosinic acid can be converted into various salts including disodium inosinate (E631), dipotassium inosinate (E632), and calcium inosinate (E633). These three inosinate compounds are used as flavor enhancers for the basic taste umami. These inosinate salts are mostly used in soups, sauces, and seasonings for the intensification and balance of the flavor of meat. Inosinic acid is typically obtained from chicken byproducts or other meat industry waste. Inosinic acid or IMP is important in metabolism. It is the ribonucleotide of hypoxanthine and the first nucleotide formed during the synthesis of purine nucleotides. It can also be formed by the deamination of adenosine monophosphate by AMP deaminase. GMP is formed by the inosinate oxidation to xanthylate (XMP). Within humans, inosinic acid participates in a number of enzymatic reactions. In particular, inosinic acid can be converted into phosphoribosyl formamidocarboxamide; which is catalyzed by the bifunctional purine biosynthesis protein. In addition, inosinic acid can be converted into xanthylic acid; which is catalyzed by the enzyme inosine-5-monophosphate dehydrogenase 1. Origin: Microbe; Formula(Parent): C10H13N4O8P; Bottle Name:Inosine-5-monophosphate; PRIME Parent Name:Inosine-5-monophosphate; PRIME in-house No.:0258, Purines A purine nucleotide which has hypoxanthine as the base and one phosphate group esterified to the sugar moiety. COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials, COVID-19 Disease Map Acquisition and generation of the data is financially supported in part by CREST/JST. relative retention time with respect to 9-anthracene Carboxylic Acid is 0.056 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.057 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Inosinic acid is an endogenous metabolite.

N-Acetyl-glucosamine 1-phosphate

C8H16NO9P (301.0563)

N-Acetyl-glucosamine 1-phosphate is an intermediate in aminosugar metabolism. It is a substrate for the enzymes phosphoglucomutase 3 [EC:5.4.2.2 and EC:5.4.2.3] and UDP-N-acteylglucosamine pyrophosphorylase 1 [EC:2.7.7.23] (KEGG). It is involved in UDP-N-acetyl-D-glucosamine biosynthesis and UDP-N-acetylgalactosamine biosynthesis (BioCyc). N-Acetyl-glucosamine 1-phosphate is an intermeiate in the Aminosugars metabolism, a substrate for the enzymes phosphoglucomutase 3 [EC:5.4.2.2 5.4.2.3] and UDP-N-acteylglucosamine pyrophosphorylase 1 [EC:2.7.7.23] (KEGG), in UDP-N-acetyl-D-glucosamine biosynthesis and UDP-N-acetylgalactosamine biosynthesis (BioCyc) [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Acetylcholine

[C7H16NO2]+ (146.1181)

Acetylcholine (ACh) is a neurotransmitter. Acetylcholine in vertebrates is the major transmitter at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system. Its physiological and pharmacological effects, metabolism, release, and receptors have been well documented in several species. ACh has been considered an important excitatory neurotransmitter in the carotid body (CB). Various nicotinic and muscarinic ACh receptors are present in both afferent nerve endings and glomus cells. Therefore, ACh can depolarize or hyperpolarize the cell membrane depending on the available receptor type in the vicinity. Binding of ACh to its receptor can create a wide variety of cellular responses including opening cation channels (nicotinic ACh receptor activation), releasing Ca2+ from intracellular storage sites (via muscarinic ACh receptors), and modulating activities of K+ and Ca2+ channels. Interactions between ACh and other neurotransmitters (dopamine, adenosine, nitric oxide) have been known, and they may induce complicated responses. Cholinergic biology in the CB differs among species and even within the same species due to different genetic composition. Development and environment influence cholinergic biology. Pharmacological data clearly indicate that both muscarinic and nicotinic acetylcholine receptors have a role in the encoding of new memories. Localized lesions and antagonist infusions demonstrate the anatomical locus of these cholinergic effects, and computational modeling links the function of cholinergic modulation to specific cellular effects within these regions. Acetylcholine has been shown to increase the strength of afferent input relative to feedback, to contribute to theta rhythm oscillations, activate intrinsic mechanisms for persistent spiking, and increase the modification of synapses. These effects might enhance different types of encoding in different cortical structures. In particular, the effects in entorhinal and perirhinal cortex and hippocampus might be important for encoding new episodic memories. The role of ACh in attention has been repeatedly demonstrated in several tasks. Acetylcholine is linked to response accuracy in voluntary and reflexive attention and also to response speed in reflexive attention. It is well known that those with Attention-deficit/hyperactivity disorders tend to be inaccurate and slow to respond. (PMID:17284361, 17011181, 15556286). Acetylcholine has been found to be a microbial product, urinary acetylcholine is produced by Lactobacillus (PMID:24621061). S - Sensory organs > S01 - Ophthalmologicals > S01E - Antiglaucoma preparations and miotics > S01EB - Parasympathomimetics D018377 - Neurotransmitter Agents > D018678 - Cholinergic Agents > D018679 - Cholinergic Agonists Acquisition and generation of the data is financially supported in part by CREST/JST. C78272 - Agent Affecting Nervous System > C47796 - Cholinergic Agonist D002317 - Cardiovascular Agents > D014665 - Vasodilator Agents IPB_RECORD: 232; CONFIDENCE confident structure COVID info from COVID-19 Disease Map Corona-virus KEIO_ID A060 Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

1-Methylnicotinamide

[C7H9N2O]+ (137.0715)

1-Methylnicotinamide is a metabolite of nicotinamide and is produced primarily in the liver. It has anti-inflammatory properties (PMID 16197374). It is a product of nicotinamide N-methyltransferase [EC 2.1.1.1] in the pathway of nicotinate and nicotinamide metabolism (KEGG). 1-Methylnicotinamide may be an endogenous activator of prostacyclin production and thus may regulate thrombotic as well as inflammatory processes in the cardiovascular system (PMID: 17641676). [HMDB] 1-Methylnicotinamide is a metabolite of nicotinamide and is produced primarily in the liver. It has anti-inflammatory properties (PMID 16197374). It is a product of nicotinamide N-methyltransferase [EC 2.1.1.1] in the pathway of nicotinate and nicotinamide metabolism (KEGG). 1-Methylnicotinamide may be an endogenous activator of prostacyclin production and thus may regulate thrombotic as well as inflammatory processes in the cardiovascular system (PMID: 17641676). 1-Methylnicotinamide. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=3106-60-3 (retrieved 2024-08-06) (CAS RN: 3106-60-3). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Guanosine monophosphate

C10H14N5O8P (363.058)

Guanosine monophosphate (GMP), also known as 5′-guanidylic acid or guanylic acid (conjugate base guanylate), is a nucleotide that is used as a monomer in RNA. It is an ester of phosphoric acid with the nucleoside guanosine. GMP consists of the phosphate group, the pentose sugar ribose, and the nucleobase guanine; hence it is a ribonucleoside monophosphate. Guanosine monophosphate is commercially produced by microbial fermentation. Guanosine monophosphate, also known as guanylic acid or 5-GMP, belongs to the class of organic compounds known as purine ribonucleoside monophosphates. These are nucleotides consisting of a purine base linked to a ribose to which one monophosphate group is attached. A guanine nucleotide containing one phosphate group esterified to the sugar moiety and found widely in nature. Guanosine monophosphate exists in all living species, ranging from bacteria to humans. Within humans, guanosine monophosphate participates in a number of enzymatic reactions. In particular, guanosine triphosphate and guanosine monophosphate can be biosynthesized from diguanosine tetraphosphate through its interaction with the enzyme bis(5-nucleosyl)-tetraphosphatase [asymmetrical]. In addition, guanosine monophosphate can be biosynthesized from guanosine diphosphate; which is mediated by the enzyme ectonucleoside triphosphate diphosphohydrolase 5. In humans, guanosine monophosphate is involved in the metabolic disorder called the lesch-nyhan syndrome (lns) pathway. Outside of the human body, guanosine monophosphate has been detected, but not quantified in several different foods, such as common cabbages, tea, winter squash, spearmints, and sugar apples. Guanosine-5-monophosphate, also known as 5-gmp or guanylic acid, is a member of the class of compounds known as purine ribonucleoside monophosphates. Purine ribonucleoside monophosphates are nucleotides consisting of a purine base linked to a ribose to which one monophosphate group is attached. Guanosine-5-monophosphate is slightly soluble (in water) and a moderately acidic compound (based on its pKa). Guanosine-5-monophosphate can be found in a number of food items such as mustard spinach, swiss chard, watercress, and colorado pinyon, which makes guanosine-5-monophosphate a potential biomarker for the consumption of these food products. Guanosine-5-monophosphate can be found primarily in blood and saliva, as well as throughout most human tissues. Guanosine-5-monophosphate exists in all living species, ranging from bacteria to humans. In humans, guanosine-5-monophosphate is involved in several metabolic pathways, some of which include clarithromycin action pathway, erythromycin action pathway, minocycline action pathway, and tetracycline action pathway. Guanosine-5-monophosphate is also involved in several metabolic disorders, some of which include gout or kelley-seegmiller syndrome, xanthine dehydrogenase deficiency (xanthinuria), aICA-Ribosiduria, and molybdenum cofactor deficiency. Guanosine monophosphate is known as E number reference E626.[7] In the form of its salts, such as disodium guanylate (E627), dipotassium guanylate (E628) and calcium guanylate (E629), are food additives used as flavor enhancers to provide the umami taste.[7] It is often used in synergy with disodium inosinate; the combination is known as disodium 5′-ribonucleotides. Disodium guanylate is often found in instant noodles, potato chips and snacks, savoury rice, tinned vegetables, cured meats, and packet soup. As it is a fairly expensive additive, it is usually not used independently of glutamic acid or monosodium glutamate (MSG), which also contribute umami. If inosinate and guanylate salts are present in a list of ingredients but MSG does not appear to be, the glutamic acid is likely provided as part of another ingredient, such as a processed soy protein complex (hydrolyzed soy protein), autolyzed yeast, or soy sauce. 5'-Guanylic acid (5'-GMP) is involved in several metabolic disorders, including the AICA-ribosiduria pathway, adenosine deaminase deficiency, adenine phosphoribosyltransferase deficiency (aprt), and the 2-hydroxyglutric aciduria pathway. 5'-Guanylic acid (5'-GMP) is involved in several metabolic disorders, including the AICA-ribosiduria pathway, adenosine deaminase deficiency, adenine phosphoribosyltransferase deficiency (aprt), and the 2-hydroxyglutric aciduria pathway.

5,6-dihydrouracil

C4H6N2O2 (114.0429)

Dihydrouracil belongs to the class of organic compounds known as pyrimidones. Pyrimidones are compounds that contain a pyrimidine ring, which bears a ketone. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions. Dihydrouracil is an intermediate breakdown product of uracil. Dihydrouracil exists in all living organisms, ranging from bacteria to plants to humans. Within humans, dihydrouracil participates in a number of enzymatic reactions. In particular, dihydrouracil can be biosynthesized from uracil; which is mediated by the enzyme dihydropyrimidine dehydrogenase [NADP(+)]. The breakdown of uracil is a multistep reaction that leads to the production of beta-alanine. The reaction process begins with the enzyme known as dihydropyrimidine dehydrogenase (DHP), which catalyzes the reduction of uracil into dihydrouracil. Then the enzyme known as dihydropyrimidinase hydrolyzes dihydrouracil into N-carbamyl-beta-alanine. Finally, beta-ureidopropionase catalyzes the conversion of N-carbamyl-beta-alanine into beta-alanine. There is at least one metabolic disorder that is associated with altered levels of dihydrouracil. In particular, dihydropyrimidinase deficiency is an inborn metabolic disorder that leads to highly increased concentrations of dihydrouracil and 5,6-dihydrothymine, and moderately increased concentrations of uracil and thymine in urine. Dihydropyrimidinase deficiency can cause neurological and gastrointestinal problems in some affected individuals (OMIM: 222748). In particular, patients with dihydropyrimidinase deficiency exhibit a number of neurological abnormalities including intellectual disability, seizures, weak muscle tone (hypotonia), an abnormally small head size (microcephaly), and autistic behaviours that affect communication and social interaction. Gastrointestinal problems that occur in dihydropyrimidinase deficiency include backflow of acidic stomach contents into the esophagus (gastroesophageal reflux) and recurrent episodes of vomiting. 3,4-dihydrouracil, also known as 2,4-dioxotetrahydropyrimidine or 5,6-dihydro-2,4-dihydroxypyrimidine, is a member of the class of compounds known as pyrimidones. Pyrimidones are compounds that contain a pyrimidine ring, which bears a ketone. Pyrimidine is a 6-membered ring consisting of four carbon atoms and two nitrogen centers at the 1- and 3- ring positions. 3,4-dihydrouracil is soluble (in water) and a very weakly acidic compound (based on its pKa). 3,4-dihydrouracil can be found in a number of food items such as colorado pinyon, rocket salad (sspecies), wax gourd, and boysenberry, which makes 3,4-dihydrouracil a potential biomarker for the consumption of these food products. 3,4-dihydrouracil can be found primarily in blood, cerebrospinal fluid (CSF), saliva, and urine, as well as throughout most human tissues. 3,4-dihydrouracil exists in all living organisms, ranging from bacteria to humans. In humans, 3,4-dihydrouracil is involved in a couple of metabolic pathways, which include beta-alanine metabolism and pyrimidine metabolism. 3,4-dihydrouracil is also involved in several metabolic disorders, some of which include UMP synthase deficiency (orotic aciduria), dihydropyrimidinase deficiency, ureidopropionase deficiency, and carnosinuria, carnosinemia. Moreover, 3,4-dihydrouracil is found to be associated with dihydropyrimidine dehydrogenase deficiency and hypertension. Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Dihydrouracil (5,6-Dihydrouracil), a metabolite of Uracil, can be used as a marker for identification of dihydropyrimidine dehydrogenase (DPD)-deficient[1][2]. Dihydrouracil (5,6-Dihydrouracil), a metabolite of Uracil, can be used as a marker for identification of dihydropyrimidine dehydrogenase (DPD)-deficient[1][2].

Cyclic GMP

C10H12N5O7P (345.0474)

Cyclic-gmp, also known as cgmp or guanosine 3,5-cyclic monophosphate, is a member of the class of compounds known as 3,5-cyclic purine nucleotides. 3,5-cyclic purine nucleotides are purine nucleotides in which the oxygen atoms linked to the C3 and C5 carbon atoms of the ribose moiety are both bonded the same phosphorus atom of the phosphate group. Cyclic-gmp is slightly soluble (in water) and a moderately acidic compound (based on its pKa). Cyclic-gmp can be found in a number of food items such as common sage, jews ear, java plum, and pepper (c. chinense), which makes cyclic-gmp a potential biomarker for the consumption of these food products. Cyclic-gmp can be found primarily in blood and cerebrospinal fluid (CSF), as well as throughout most human tissues. Cyclic-gmp exists in all living species, ranging from bacteria to humans. Moreover, cyclic-gmp is found to be associated with headache. Guanosine cyclic 3,5-(hydrogen phosphate). A guanine nucleotide containing one phosphate group which is esterified to the sugar moiety in both the 3- and 5-positions. It is a cellular regulatory agent and has been described as a second messenger. Its levels increase in response to a variety of hormones, including acetylcholine, insulin, and oxytocin and it has been found to activate specific protein kinases. (From Merck Index, 11th ed). Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Glyceraldehyde

C3H6O3 (90.0317)

DL-Glyceraldehyde is a monosaccharide. DL-Glyceraldehyde is the simplest aldose. DL-Glyceraldehyde can be used for various biochemical studies[1].

Glycerol

C3H8O3 (92.0473)

Glycerol or glycerin is a colourless, odourless, viscous liquid that is sweet-tasting and mostly non-toxic. It is widely used in the food industry as a sweetener and humectant and in pharmaceutical formulations. Glycerol is an important component of triglycerides (i.e. fats and oils) and of phospholipids. Glycerol is a three-carbon substance that forms the backbone of fatty acids in fats. When the body uses stored fat as a source of energy, glycerol and fatty acids are released into the bloodstream. The glycerol component can be converted into glucose by the liver and provides energy for cellular metabolism. Normally, glycerol shows very little acute toxicity and very high oral doses or acute exposures can be tolerated. On the other hand, chronically high levels of glycerol in the blood are associated with glycerol kinase deficiency (GKD). GKD causes the condition known as hyperglycerolemia, an accumulation of glycerol in the blood and urine. There are three clinically distinct forms of GKD: infantile, juvenile, and adult. The infantile form is the most severe and is associated with vomiting, lethargy, severe developmental delay, and adrenal insufficiency. The mechanisms of glycerol toxicity in infants are not known, but it appears to shift metabolism towards chronic acidosis. Acidosis typically occurs when arterial pH falls below 7.35. In infants with acidosis, the initial symptoms include poor feeding, vomiting, loss of appetite, weak muscle tone (hypotonia), and lack of energy (lethargy). These can progress to heart, liver, and kidney abnormalities, seizures, coma, and possibly death. These are also the characteristic symptoms of untreated GKD. Many affected children with organic acidemias experience intellectual disability or delayed development. Patients with the adult form of GKD generally have no symptoms and are often detected fortuitously. Glycerol. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=56-81-5 (retrieved 2024-07-01) (CAS RN: 56-81-5). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Myo-Inositol

C6H12O6 (180.0634)

myo-Inositol is an inositol isoform. Inositol is a derivative of cyclohexane with six hydroxyl groups, making it a polyol. It also is known as a sugar alcohol, having exactly the same molecular formula as glucose or other hexoses. Inositol exists in nine possible stereoisomers, of which cis-1,2,3,5-trans-4,6-cyclohexanehexol, or myo-inositol is the most widely occurring form in nature. The other known inositols include scyllo-inositol, muco-inositol, D-chiro-inositol, L-chiro-inositol, neo-inositol, allo-inositol, epi-inositol and cis-inositol. myo-Inositol is found naturally in many foods (particularly in cereals with high bran content) and can be used as a sweetner as it has half the sweetness of sucrose (table sugar). myo-Inositol was once considered a member of the vitamin B complex and given the name: vitamin B8. However, because it is produced by the human body from glucose, it is not an essential nutrient, and therefore cannot be called a vitamin. myo-Inositol is a precursor molecule for a number of secondary messengers including various inositol phosphates. In addition, inositol/myo-inositol is an important component of the lipids known as phosphatidylinositol (PI) phosphatidylinositol phosphate (PIP). myo-Inositol is synthesized from glucose, via glucose-6-phosphate (G-6-P) in two steps. First, G-6-P is isomerised by an inositol-3-phosphate synthase enzyme to myo-inositol 1-phosphate, which is then dephosphorylated by an inositol monophosphatase enzyme to give free myo-inositol. In humans, myo-inositol is primarily synthesized in the kidneys at a rate of a few grams per day. myo-Inositol can be used in the management of preterm babies who have or are at a risk of infant respiratory distress syndrome. It is also used as a treatment for polycystic ovary syndrome (PCOS). It works by increasing insulin sensitivity, which helps to improve ovarian function and reduce hyperandrogenism. Reduced levels of myo-inositol have been found in the spinal fluid of depressed patients and levels are significantly reduced in brain samples of suicide victims. Of common occurrence in plants and animals . obtained comly. from phytic acid in corn steep liquor. Dietary supplement C26170 - Protective Agent > C1509 - Neuroprotective Agent A - Alimentary tract and metabolism > A11 - Vitamins COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS D-chiro-Inositol is an epimer of myo-inositol found in certain mammalian glycosylphosphatidylinositol protein anchors and inositol phosphoglycans possessing insulin-like bioactivity. D-chiro-Inositol is used clinically for the treatment of polycystic ovary syndrome (PCOS) and diabetes mellitus, which can reduce hyperglycemia and ameliorate insulin resistance[1][2][3]. i-Inositol is a chemical compound related to lipids found in many foods, especially fruits such as cantaloupe and oranges. i-Inositol is a chemical compound related to lipids found in many foods, especially fruits such as cantaloupe and oranges. Scyllo-Inositol, an amyloid inhibitor, potentialy inhibits α-synuclein aggregation. Scyllo-Inositol stabilizes a non-fibrillar non-toxic form of amyloid-β peptide (Aβ42) in vitro, reverses cognitive deficits, and reduces synaptic toxicity and lowers amyloid plaques in an Alzheimer's disease mouse model[1]. Scyllo-Inositol, an amyloid inhibitor, potentialy inhibits α-synuclein aggregation. Scyllo-Inositol stabilizes a non-fibrillar non-toxic form of amyloid-β peptide (Aβ42) in vitro, reverses cognitive deficits, and reduces synaptic toxicity and lowers amyloid plaques in an Alzheimer's disease mouse model[1].

Betaine aldehyde

[C5H12NO]+ (102.0919)

Betaine aldehyde, also known as BTL, belongs to the class of organic compounds known as tetraalkylammonium salts. These are organonitrogen compounds containing a quaternary ammonium substituted with four alkyl chains. Betaine aldehyde is an extremely weak basic (essentially neutral) compound (based on its pKa). In humans, betaine aldehyde is involved in betaine metabolism. Outside of the human body, betaine aldehyde has been detected, but not quantified in, several different foods, such as sourdoughs, summer savouries, loganberries, burbots, and celery stalks. This could make betaine aldehyde a potential biomarker for the consumption of these foods. Betaine aldehyde is an intermediate in the metabolism of glycine, serine, and threonine. The human aldehyde dehydrogenase (EC 1.2.1.3) facilitates the conversion of betaine aldehyde into glycine betaine. Betaine aldehyde is a substrate for choline dehydrogenase (PMID: 12467448, 7646513). Betaine aldehyde is an intermediate in the metabolism of glycine, serine and threonine. The human aldehyde dehydrogenase (EC 1.2.1.3) facilitates the conversion of betaine aldehyde to glycine betaine. Betaine aldehyde is a substrate for Choline dehydrogenase (mitochondrial). (PMID: 12467448, 7646513) [HMDB]. Betaine aldehyde is found in many foods, some of which are celery leaves, pummelo, star anise, and grape. COVID info from COVID-19 Disease Map KEIO_ID B044 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Acetic acid

C2H4O2 (60.0211)

Acetic acid is a two-carbon, straight-chain fatty acid. It is the smallest short-chain fatty acid (SCFA) and one of the simplest carboxylic acids. is an acidic, colourless liquid and is the main component in vinegar. Acetic acid has a sour taste and pungent smell. It is an important chemical reagent and industrial chemical that is used in the production of plastic soft drink bottles, photographic film; and polyvinyl acetate for wood glue, as well as many synthetic fibres and fabrics. In households diluted acetic acid is often used as a cleaning agent. In the food industry acetic acid is used as an acidity regulator. Acetic acid is found in all organisms, from bacteria to plants to humans. The acetyl group, derived from acetic acid, is fundamental to the biochemistry of virtually all forms of life. When bound to coenzyme A (to form acetylCoA) it is central to the metabolism of carbohydrates and fats. However, the concentration of free acetic acid in cells is kept at a low level to avoid disrupting the control of the pH of the cell contents. Acetic acid is produced and excreted in large amounts by certain acetic acid bacteria, notably the Acetobacter genus and Clostridium acetobutylicum. These bacteria are found universally in foodstuffs, water, and soil. Due to their widespread presence on fruit, acetic acid is produced naturally as fruits and many other sugar-rich foods spoil. Several species of anaerobic bacteria, including members of the genus Clostridium and Acetobacterium can convert sugars to acetic acid directly. However, Clostridium bacteria are less acid-tolerant than Acetobacter. Even the most acid-tolerant Clostridium strains can produce acetic acid in concentrations of only a few per cent, compared to Acetobacter strains that can produce acetic acid in concentrations up to 20\\%. Acetic acid is also a component of the vaginal lubrication of humans and other primates, where it appears to serve as a mild antibacterial agent. Acetic acid can be found in other biofluids such as urine at low concentrations. Urinary acetic acid is produced by bacteria such as Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Enterobacter, Acinetobacter, Proteus mirabilis, Citrobacter frundii, Enterococcus faecalis, Streptococcus group B, Staphylococcus saprophyticus (PMID: 22292465). Acetic acid concentrations greater than 30 uM/mM creatinine in the urine can indicate a urinary tract infection, which typically suggests the presence of E. coli or Klebshiella pneumonia in the urinary tract. (PMID: 24909875) Acetic acid is also produced by other bacteria such as Akkermansia, Bacteroidetes, Bifidobacterium, Prevotella and Ruminococcus (PMID: 20444704; PMID: 22292465). G - Genito urinary system and sex hormones > G01 - Gynecological antiinfectives and antiseptics > G01A - Antiinfectives and antiseptics, excl. combinations with corticosteroids > G01AD - Organic acids S - Sensory organs > S02 - Otologicals > S02A - Antiinfectives > S02AA - Antiinfectives D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents It is used for smoking meats and fish C254 - Anti-Infective Agent KEIO_ID A029

Indoleacetaldehyde

C10H9NO (159.0684)

Indoleacetaldehyde, also known as tryptaldehyde, belongs to the class of organic compounds known as 3-alkylindoles. 3-Alkylindoles are compounds containing an indole moiety that carries an alkyl chain at the 3-position. Indoleacetaldehyde is an extremely weak basic (essentially neutral) compound (based on its pKa). Indoleacetaldehyde exists in all living species, ranging from bacteria to humans. Within humans, indoleacetaldehyde participates in a number of enzymatic reactions. In particular, indoleacetaldehyde can be biosynthesized from tryptamine; which is mediated by the enzyme kynurenine 3-monooxygenase. In addition, indoleacetaldehyde can be converted into indoleacetic acid; which is catalyzed by the enzyme aldehyde dehydrogenase, mitochondrial. In humans, indoleacetaldehyde is involved in tryptophan metabolism. Outside of the human body, indoleacetaldehyde has been detected, but not quantified in, several different foods, such as nuts, turmerics, Alaska blueberries, summer savouries, and black raspberries. This could make indoleacetaldehyde a potential biomarker for the consumption of these foods. Indoleacetaldehyde is also a substrate for amine oxidase and 4-trimethylaminobutyraldehyde dehydrogenase. Indoleacetaldehyde is a substrate for Retina-specific copper amine oxidase, Aldehyde dehydrogenase X (mitochondrial), Amine oxidase B, Amiloride-sensitive amine oxidase, Aldehyde dehydrogenase (mitochondrial), Fatty aldehyde dehydrogenase, 4-trimethylaminobutyraldehyde dehydrogenase, Aldehyde dehydrogenase (dimeric NADP-preferring), Aldehyde dehydrogenase family 7 member A1, Amine oxidase A, Aldehyde dehydrogenase 1A3 and Membrane copper amine oxidase. [HMDB]. 1H-Indole-3-acetaldehyde is found in many foods, some of which are oil palm, rowanberry, cherimoya, and japanese persimmon. Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

UDP Xylose

C14H22N2O16P2 (536.0445)

Acquisition and generation of the data is financially supported in part by CREST/JST. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

L-Gulonolactone

C6H10O6 (178.0477)

L-Gulonolactone (also known as reduced ascorbic acid, RAA) is the substrate of the enzyme L-gulono-1,4-lactone oxidoreductase (EC 1.1.3.8), which catalyzes the last step of the biosynthesis of L-ascorbic acid (vitamin C) in plants and animals. The enzyme L-Gulono-1,4-lactone oxidase is missing in scurvy-prone, vitamin C-deficient animals, such as humans. L-Gulonolactone is present in human blood and has been used as one of the markers to compare changes in exercise-induced oxidative stress. (PMID: 16956367, 16494601) [HMDB] L-Gulonolactone (also known as reduced ascorbic acid, RAA) is the substrate of the enzyme L-gulono-1,4-lactone oxidoreductase (EC 1.1.3.8), which catalyzes the last step of the biosynthesis of L-ascorbic acid (vitamin C) in plants and animals. The enzyme L-Gulono-1,4-lactone oxidase is missing in scurvy-prone, vitamin C-deficient animals, such as humans. L-Gulonolactone is present in human blood and has been used as one of the markers to compare changes in exercise-induced oxidative stress. (PMID:16956367, 16494601). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS L-Gulono-1,4-lactone is a substrate of L-gulono-1,4-lactone oxidoreductase, which catalyzes the last step of the biosynthesis of L-ascorbic (Vatamin) C. In other words, L-Gulono-1,4-lactone is a direct precursor of vitamin C in animals, in plants and in some protists.

Estriol

C18H24O3 (288.1725)

Estriol is a metabolite of estrone metabolized via 16alpha-hydroxyestrone through the enzyme 16alpha-hydroxysteroid dehydrogenase (EC 1.1.1.147) or to 2- or 4-hydroxyestrone (catechol estrogens) by the action of catecho-O-methyltransferase (EC 2.1.1.6). The latter metabolites can be formed in the brain and may compete with receptors for catecholamines. Metabolites are conjugated with sulfate or glucuronide before excretion by the kidney. During pregnancy, estriol constitutes 60-70\\\\% of the total estrogens, increasing to 300-500-fold in relation to non-pregnant women. The late term human fetus produces relatively large amounts of 16 alphahydroxy DHEA, which serves the mother as a precursor of estriol. It has been shown that 90\\\\% of the precursors for the formation of estriol are of fetal origin. If abnormal maternal serum screening results, specifically low levels of unconjugated estriol in the second trimester are detected, a diagnosis of Smith-Lemli-Opitz syndrome (SLOS),or RSH is suspected. SLOS is an autosomal recessive disorder caused by mutations of the gene encoding 7-dehydrocholesterol reductase (EC 1.3.1.21, DHCR7). (PMID: 16202579, 16112271, 16097001). G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03C - Estrogens > G03CA - Natural and semisynthetic estrogens, plain G - Genito urinary system and sex hormones > G03 - Sex hormones and modulators of the genital system > G03C - Estrogens > G03CC - Estrogens, combinations with other drugs Estriol (also oestriol) is one of the three main estrogens produced by the human body. Estriol is found in common bean and pomegranate. C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Estriol is a G protein-coupled estrogen receptor antagonist that can act on estrogen receptor-negative breast cancer cells. Estriol is a G protein-coupled estrogen receptor antagonist that can act on estrogen receptor-negative breast cancer cells.

Coenzyme Q10

C59H90O4 (862.6839)

Coenzyme Q10 (ubiquinone) is a naturally occurring compound widely distributed in animal organisms and in humans. The primary compounds involved in the biosynthesis of ubiquinone are 4-hydroxybenzoate and the polyprenyl chain. An essential role of coenzyme Q10 is as an electron carrier in the mitochondrial respiratory chain. Moreover, coenzyme Q10 is one of the most important lipophilic antioxidants, preventing the generation of free radicals as well as oxidative modifications of proteins, lipids, and DNA, it and can also regenerate the other powerful lipophilic antioxidant, alpha-tocopherol. Antioxidant action is a property of the reduced form of coenzyme Q10, ubiquinol (CoQ10H2), and the ubisemiquinone radical (CoQ10H*). Paradoxically, independently of the known antioxidant properties of coenzyme Q10, the ubisemiquinone radical anion (CoQ10-) possesses prooxidative properties. Decreased levels of coenzyme Q10 in humans are observed in many pathologies (e.g. cardiac disorders, neurodegenerative diseases, AIDS, cancer) associated with intensive generation of free radicals and their action on cells and tissues. In these cases, treatment involves pharmaceutical supplementation or increased consumption of coenzyme Q10 with meals as well as treatment with suitable chemical compounds (i.e. folic acid or B-group vitamins) which significantly increase ubiquinone biosynthesis in the organism. Estimation of coenzyme Q10 deficiency and efficiency of its supplementation requires a determination of ubiquinone levels in the organism. Therefore, highly selective and sensitive methods must be applied, such as HPLC with UV or coulometric detection. For a number of years, coenzyme Q (CoQ10 in humans) was known for its key role in mitochondrial bioenergetics; later studies demonstrated its presence in other subcellular fractions and in plasma, and extensively investigated its antioxidant role. These two functions constitute the basis on which research supporting the clinical use of CoQ10 is founded. Also at the inner mitochondrial membrane level, coenzyme Q is recognized as an obligatory co-factor for the function of uncoupling proteins and a modulator of the transition pore. Furthermore, recent data reveal that CoQ10 affects expression of genes involved in human cell signalling, metabolism, and transport and some of the effects of exogenously administered CoQ10 may be due to this property. Coenzyme Q is the only lipid soluble antioxidant synthesized endogenously. In its reduced form, CoQH2, ubiquinol, inhibits protein and DNA oxidation but it is the effect on lipid peroxidation that has been most deeply studied. Ubiquinol inhibits the peroxidation of cell membrane lipids and also that of lipoprotein lipids present in the circulation. Dietary supplementation with CoQ10 results in increased levels of ubiquinol-10 within circulating lipoproteins and increased resistance of human low-density lipoproteins to the initiation of lipid peroxidation. Moreover, CoQ10 has a direct anti-atherogenic effect, which has been demonstrated in apolipoprotein E-deficient mice fed with a high-fat diet. (PMID: 15928598, 17914161). COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials C - Cardiovascular system > C01 - Cardiac therapy C26170 - Protective Agent > C275 - Antioxidant D018977 - Micronutrients > D014815 - Vitamins Same as: D01065 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Deoxyribose

C5H10O4 (134.0579)

Deoxyribose is an aldopentose, a monosaccharide containing five carbon atoms, and including an aldehyde functional group. It is derived from the pentose sugar ribose by the replacement of the hydroxyl group at the 2 position with hydrogen, leading to the net loss of an oxygen atom, and has chemical formula C5H10O4. In deoxyribose, the carbon furthest from the attached carbon is stripped of the oxygen atom in what would be a hydroxyl group in ribose. The common base adenine (a purine derivative) coupled to deoxyribose is called deoxyadenosine. The 5-triphosphate derivative of adenosine, commonly called adenosine triphosphate (ATP) is an important energy transport molecule in cells. -- Wikipedia [HMDB] Deoxyribose is an aldopentose, a monosaccharide containing five carbon atoms, and including an aldehyde functional group. It is derived from the pentose sugar ribose by the replacement of the hydroxyl group at the 2 position with hydrogen, leading to the net loss of an oxygen atom, and has chemical formula C5H10O4. In deoxyribose, the carbon furthest from the attached carbon is stripped of the oxygen atom in what would be a hydroxyl group in ribose. The common base adenine (a purine derivative) coupled to deoxyribose is called deoxyadenosine. The 5-triphosphate derivative of adenosine, commonly called adenosine triphosphate (ATP) is an important energy transport molecule in cells. -- Wikipedia. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Thyminose is an endogenous metabolite. Thyminose is an endogenous metabolite.

Pyruvaldehyde

C3H4O2 (72.0211)

Methylglyoxal, also known as 2-ketopropionaldehyde or 2-oxopropanal, is a member of the class of compounds known as alpha ketoaldehydes. Alpha ketoaldehydes are organic compounds containing an aldehyde substituted with a keto group on the adjacent carbon. Methylglyoxal is soluble (in water) and an extremely weak acidic compound (based on its pKa). Methylglyoxal can be found in a number of food items such as shiitake, yellow zucchini, roman camomile, and carob, which makes methylglyoxal a potential biomarker for the consumption of these food products. Methylglyoxal can be found primarily in blood and urine, as well as throughout most human tissues. Methylglyoxal exists in all living species, ranging from bacteria to humans. In humans, methylglyoxal is involved in few metabolic pathways, which include glycine and serine metabolism, pyruvaldehyde degradation, pyruvate metabolism, and spermidine and spermine biosynthesis. Methylglyoxal is also involved in several metabolic disorders, some of which include hyperglycinemia, non-ketotic, pyruvate kinase deficiency, non ketotic hyperglycinemia, and pyruvate decarboxylase E1 component deficiency (PDHE1 deficiency). Moreover, methylglyoxal is found to be associated with diabetes mellitus type 2. Methylglyoxal, also called pyruvaldehyde or 2-oxopropanal, is the organic compound with the formula CH3C(O)CHO. Gaseous methylglyoxal has two carbonyl groups, an aldehyde and a ketone but in the presence of water, it exists as hydrates and oligomers. It is a reduced derivative of pyruvic acid . Pyruvaldehyde is an organic compound used often as a reagent in organic synthesis, as a flavoring agent, and in tanning. It has been demonstrated as an intermediate in the metabolism of acetone and its derivatives in isolated cell preparations, in various culture media, and in vivo in certain animals.

Lanosterol

C30H50O (426.3861)

Lanosterol, also known as lanosterin, belongs to the class of organic compounds known as triterpenoids. These are terpene molecules containing six isoprene units. Thus, lanosterol is considered to be a sterol lipid molecule. Lanosterol is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. Lanosterol is biochemically synthesized starting from acetyl-CoA by the HMG-CoA reductase pathway. The critical step is the enzymatic conversion of the acyclic terpene squalene to the polycylic lanosterol via 2,3-squalene oxide. Constituent of wool fat used e.g. as chewing-gum softenerand is) also from yeast COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Retinol(Vitamin A)

C20H30O (286.2297)

Vitamin A (retinol) is a yellow fat-soluble, antioxidant vitamin important in vision and bone growth. It belongs to the family of chemical compounds known as retinoids. Retinol is ingested in a precursor form; animal sources (milk and eggs) contain retinyl esters, whereas plants (carrots, spinach) contain pro-vitamin A carotenoids. Hydrolysis of retinyl esters results in retinol while pro-vitamin A carotenoids can be cleaved to produce retinal. Retinal, also known as retinaldehyde, can be reversibly reduced to produce retinol or it can be irreversibly oxidized to produce retinoic acid. Retinol and derivatives of retinol that play an essential role in metabolic functioning of the retina, the growth of and differentiation of epithelial tissue, the growth of bone, reproduction, and the immune response. Dietary vitamin A is derived from a variety of carotenoids found in plants. It is enriched in the liver, egg yolks, and the fat component of dairy products. Retinyl esters from animal-sourced foods (or synthesized for dietary supplements for humans and domesticated animals) are acted upon by retinyl ester hydrolases in the lumen of the small intestine to release free retinol. Retinol enters intestinal absorptive cells by passive diffusion. Absorption efficiency is in the range of 70 to 90\%. Humans are at risk for acute or chronic vitamin A toxicity because there are no mechanisms to suppress absorption or excrete the excess in urine.[5] Within the cell, retinol is there bound to retinol binding protein 2 (RBP2). It is then enzymatically re-esterified by the action of lecithin retinol acyltransferase and incorporated into chylomicrons that are secreted into the lymphatic system. Unlike retinol, β-carotene is taken up by enterocytes by the membrane transporter protein scavenger receptor B1 (SCARB1). The protein is upregulated in times of vitamin A deficiency. If vitamin A status is in the normal range, SCARB1 is downregulated, reducing absorption.[6] Also downregulated is the enzyme beta-carotene 15,15'-dioxygenase (formerly known as beta-carotene 15,15'-monooxygenase) coded for by the BCMO1 gene, responsible for symmetrically cleaving β-carotene into retinal.[8] Absorbed β-carotene is either incorporated as such into chylomicrons or first converted to retinal and then retinol, bound to RBP2. After a meal, roughly two-thirds of the chylomicrons are taken up by the liver with the remainder delivered to peripheral tissues. Peripheral tissues also can convert chylomicron β-carotene to retinol.[6][15] The capacity to store retinol in the liver means that well-nourished humans can go months on a vitamin A deficient diet without manifesting signs and symptoms of deficiency. Two liver cell types are responsible for storage and release: hepatocytes and hepatic stellate cells (HSCs). Hepatocytes take up the lipid-rich chylomicrons, bind retinol to retinol-binding protein 4 (RBP4), and transfer the retinol-RBP4 to HSCs for storage in lipid droplets as retinyl esters. Mobilization reverses the process: retinyl ester hydrolase releases free retinol which is transferred to hepatocytes, bound to RBP4, and put into blood circulation. Other than either after a meal or when consumption of large amounts exceeds liver storage capacity, more than 95\% of retinol in circulation is bound to RBP4.[15] Vitamin A is a fat-soluble vitamin, hence an essential nutrient. The term "vitamin A" encompasses a group of chemically related organic compounds that includes retinol, retinal (also known as retinaldehyde), retinoic acid, and several provitamin (precursor) carotenoids, most notably beta-carotene.[3][4][5][6] Vitamin A has multiple functions: essential in embryo development for growth, maintaining the immune system, and healthy vision, where it combines with the protein opsin to form rhodopsin – the light-absorbing molecule necessary for both low-light (scotopic vision) and color vision.[7] Vitamin A occurs as two principal forms in foods: A) retinol, found in animal-sourced foods, either as retinol or bound to a fatty acid to become a retinyl ester, and B) the carotenoids alpha-carotene, β-carotene, gamma-carotene, and the xanthophyll beta-cryptoxanthin (all of which contain β-ionone rings) that function as provitamin A in herbivore and omnivore animals which possess the enzymes that cleave and convert provitamin carotenoids to retinal and then to retinol.[8] Some carnivore species lack this enzyme. The other carotenoids have no vitamin activity.[6] Dietary retinol is absorbed from the digestive tract via passive diffusion. Unlike retinol, β-carotene is taken up by enterocytes by the membrane transporter protein scavenger receptor B1 (SCARB1), which is upregulated in times of vitamin A deficiency.[6] Storage of retinol is in lipid droplets in the liver. A high capacity for long-term storage of retinol means that well-nourished humans can go months on a vitamin A- and β-carotene-deficient diet, while maintaining blood levels in the normal range.[4] Only when the liver stores are nearly depleted will signs and symptoms of deficiency show.[4] Retinol is reversibly converted to retinal, then irreversibly to retinoic acid, which activates hundreds of genes.[9] Vitamin A deficiency is common in developing countries, especially in Sub-Saharan Africa and Southeast Asia. Deficiency can occur at any age but is most common in pre-school age children and pregnant women, the latter due to a need to transfer retinol to the fetus. Vitamin A deficiency is estimated to affect approximately one-third of children under the age of five around the world, resulting in hundreds of thousands of cases of blindness and deaths from childhood diseases because of immune system failure.[10] Reversible night blindness is an early indicator of low vitamin A status. Plasma retinol is used as a biomarker to confirm vitamin A deficiency. Breast milk retinol can indicate a deficiency in nursing mothers. Neither of these measures indicates the status of liver reserves.[6] The European Union and various countries have set recommendations for dietary intake, and upper limits for safe intake. Vitamin A toxicity also referred to as hypervitaminosis A, occurs when there is too much vitamin A accumulating in the body. Symptoms may include nervous system effects, liver abnormalities, fatigue, muscle weakness, bone and skin changes, and others. The adverse effects of both acute and chronic toxicity are reversed after consumption of high dose supplements is stopped.[6]

Nicotinic acid ribonucleoside

C11H14NO6+ (256.0821)

Nicotinic acid ribonucleoside (CAS: 17720-18-2) belongs to the class of organic compounds known as glycosylamines. Glycosylamines are compounds consisting of an amine with a beta-N-glycosidic bond to a carbohydrate, thus forming a cyclic hemiaminal ether bond (alpha-amino ether). Nicotinic acid ribonucleoside is involved in the nicotinate and nicotinamide metabolism pathways. Nicotinic acid ribonucleoside can be reversibly converted into nicotinate and nicotinate D-ribonucleoside by purine-nucleoside phosphorylase (EC 2.4.2.1) and 5-nucleotidase (EC 3.1.3.5), respectively. Nicotinate D-ribonucleoside is involved in the nicotinate and nicotinamide metabolism pathways. Nicotinate D-ribonucleoside can be reversibly converted to nicotinate and nicotinate D-ribonucleoside by purine-nucleoside phosphorylase [EC:2.4.2.1] and 5-nucleotidase [EC:3.1.3.5], respectively. [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Palmitaldehyde

C16H32O (240.2453)

Palmitaldehyde, also known as 1-hexadecanal, is a member of the class of compounds known as fatty aldehydes. Fatty aldehydes are long chain aldehydes with a chain of at least 12 carbon atoms. Thus, palmitaldehyde is considered to be a fatty aldehyde lipid molecule. Palmitaldehyde is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Palmitaldehyde can be found in a number of food items such as rose hip, lambsquarters, pak choy, and swede, which makes palmitaldehyde a potential biomarker for the consumption of these food products. Palmitaldehyde exists in all eukaryotes, ranging from yeast to humans. In humans, palmitaldehyde is involved in few metabolic pathways, which include globoid cell leukodystrophy, metachromatic leukodystrophy (MLD), and sphingolipid metabolism. Palmitaldehyde is also involved in few metabolic disorders, which include fabry disease, gaucher disease, and krabbe disease. Palmitaldehyde is an intermediate in the metabolism of Glycosphingolipid. It is a substrate for Sphingosine-1-phosphate lyase 1. Hexadecanal (Palmitaldehyde) is a free fatty aldehyde present in animals[1]. Hexadecanal (Palmitaldehyde) is a free fatty aldehyde present in animals[1].

Pantetheine

C11H22N2O4S (278.13)

Pantetheine is the mercaptoethyl conjugated amide analogue of pantothenic acid (Vitamin B5). The dimer of this compound, pantethine is more commonly known, and is considered to be a more potent form of vitamin B5 than pantothenic acid. Pantetheine is an intermediate in the production of Coenzyme A by the body. An intermediate in the pathway of coenzyme A formation in mammalian liver and some microorganisms. Pantetheine is the mercaptoethyl conjugated amide analogue of pantothenic acid (Vitamin B5). The dimer of this compound, pantethine is more commonly known, and is considered to be a more potent form of vitamin B5 than pantothenic acid. Pantetheine is an intermediate in the production of Coenzyme A by the body. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Carbon dioxide

CO2 (43.9898)

Carbon dioxide is a colorless, odorless gas that can be formed by the body and is necessary for the respiration cycle of plants and animals. Carbon dioxide is produced during respiration by all animals, fungi and microorganisms that depend on living and decaying plants for food, either directly or indirectly. It is, therefore, a major component of the carbon cycle. Additionally, carbon dioxide is used by plants during photosynthesis to make sugars which may either be consumed again in respiration or used as the raw material to produce polysaccharides such as starch and cellulose, proteins and the wide variety of other organic compounds required for plant growth and development. When inhaled at concentrations much higher than usual atmospheric levels, it can produce a sour taste in the mouth and a stinging sensation in the nose and throat. These effects result from the gas dissolving in the mucous membranes and saliva, forming a weak solution of carbonic acid. Carbon dioxide is used by the food industry, the oil industry, and the chemical industry. Carbon dioxide is used to produce carbonated soft drinks and soda water. Traditionally, the carbonation in beer and sparkling wine comes about through natural fermentation, but some manufacturers carbonate these drinks artificially. Leavening agent, propellant, aerating agent, preservative. Solvent for supercritical extraction e.g. of caffeine in manufacture of caffeine-free instant coffee. It is used in carbonation of beverages, in the frozen food industry and as a component of controlled atmosphere packaging (CAD) to inhibit bacterial growth. Especies effective against Gram-negative spoilage bacteria, e.g. Pseudomonas V - Various > V03 - All other therapeutic products > V03A - All other therapeutic products > V03AN - Medical gases

Formic acid

CH2O2 (46.0055)

Formic acid is the simplest carboxylic acid. Formate is an intermediate in normal metabolism. It takes part in the metabolism of one-carbon compounds and its carbon may appear in methyl groups undergoing transmethylation. It is eventually oxidized to carbon dioxide. Formate is typically produced as a byproduct in the production of acetate. It is responsible for both metabolic acidosis and disrupting mitochondrial electron transport and energy production by inhibiting cytochrome oxidase activity, the terminal electron acceptor of the electron transport chain. Cell death from cytochrome oxidase inhibition by formate is believed to result partly from depletion of ATP, reducing energy concentrations so that essential cell functions cannot be maintained. Furthermore, inhibition of cytochrome oxidase by formate may also cause cell death by increased production of cytotoxic reactive oxygen species (ROS) secondary to the blockade of the electron transport chain. In nature, formic acid is found in the stings and bites of many insects of the order Hymenoptera, including bees and ants. The principal use of formic acid is as a preservative and antibacterial agent in livestock feed. When sprayed on fresh hay or other silage, it arrests certain decay processes and causes the feed to retain its nutritive value longer. Urinary formate is produced by Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia, Enterobacter, Acinetobacter, Proteus mirabilis, Citrobacter frundii, Enterococcus faecalis, Streptococcus group B, Staphylococcus saprophyticus (PMID: 22292465). It is used as a flavouring adjunct, an animal feed additive, a brewing antiseptic and as a food preservative

Formaldehyde

CH2O (30.0106)

Formaldehyde is a highly reactive aldehyde gas formed by oxidation or incomplete combustion of hydrocarbons. In solution, it has a wide range of uses: in the manufacture of resins and textiles, as a disinfectant, and as a laboratory fixative or preservative. Formaldehyde solution (formalin) is considered a hazardous compound, and its vapor toxic. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p717) -- Pubchem; The chemical compound formaldehyde (also known as methanal), is a gas with a pungent smell. It is the simplest aldehyde. Its chemical formula is H2CO. Formaldehyde was first synthesized by the Russian chemist Aleksandr Butlerov in 1859 but was conclusively identified by August Wilhelm van Hofmann in 1867. Although formaldehyde is a gas at room temperature, it is readily soluble in water, and it is most commonly sold as a 37\\% solution in water called by trade names such as formalin or formol. In water, formaldehyde polymerizes, and formalin actually contains very little formaldehyde in the form of H2CO monomer. Usually, these solutions contain a few percent methanol to limit the extent of polymerization. Formaldehyde exhibits most of the general chemical properties of the aldehydes, except that is generally more reactive than other aldehydes. Formaldehyde is a potent electrophile. It can participate in electrophilic aromatic substitution reactions with aromatic compounds and can undergo electrophilic addition reactions with alkenes. In the presence of basic catalysts, formaldehyde undergoes a Cannizaro reaction to produce formic acid and methanol. Because formaldehyde resins are used in many construction materials, including plywood, carpet, and spray-on insulating foams, and because these resins slowly give off formaldehyde over time, formaldehyde is one of the more common indoor air pollutants. At concentrations above 0.1 mg/kg in air, inhaled formaldehyde can irritate the eyes and mucous membranes, resulting in watery eyes, headache, a burning sensation in the throat, and difficulty breathing. -- Wikipedia. A highly reactive aldehyde gas formed by oxidation or incomplete combustion of hydrocarbons. Formaldehyde is found in many foods, some of which are ginseng, lentils, coriander, and allspice. D000890 - Anti-Infective Agents D004202 - Disinfectants D005404 - Fixatives

Acetaldehyde

C2H4O (44.0262)

Acetaldehyde, also known as ethanal, belongs to the class of organic compounds known as short-chain aldehydes. These are an aldehyde with a chain length containing between 2 and 5 carbon atoms. Acetaldehyde exists in all living species, ranging from bacteria to humans. Within humans, acetaldehyde participates in a number of enzymatic reactions. In particular, acetaldehyde can be biosynthesized from ethanol which is mediated by the enzyme alcohol dehydrogenase 1B. Acetaldehyde can also be converted to acetic acid by the enzyme aldehyde dehydrogenase (mitochondrial) and aldehyde dehydrogenase X (mitochondrial). The main method of production is the oxidation of ethylene by the Wacker process, which involves oxidation of ethylene using a homogeneous palladium/copper system: 2 CH2CH2 + O2 → 2 CH3CHO. In the 1970s, the world capacity of the Wacker-Hoechst direct oxidation process exceeded 2 million tonnes annually. In humans, acetaldehyde is involved in disulfiram action pathway. Acetaldehyde is an aldehydic, ethereal, and fruity tasting compound. Outside of the human body, acetaldehyde is found, on average, in the highest concentration in a few different foods, such as sweet oranges, pineapples, and mandarin orange (clementine, tangerine) and in a lower concentration in . acetaldehyde has also been detected, but not quantified in several different foods, such as malabar plums, malus (crab apple), rose hips, natal plums, and medlars. This could make acetaldehyde a potential biomarker for the consumption of these foods. In condensation reactions, acetaldehyde is prochiral. Acetaldehyde is formally rated as a possible carcinogen (by IARC 2B) and is also a potentially toxic compound. Acetaldehyde has been found to be associated with several diseases such as alcoholism, ulcerative colitis, nonalcoholic fatty liver disease, and crohns disease; also acetaldehyde has been linked to the inborn metabolic disorders including aldehyde dehydrogenase deficiency (III) sulfate is used to reoxidize the mercury back to the mercury. Acetaldehyde was first observed by the Swedish pharmacist/chemist Carl Wilhelm Scheele (1774); it was then investigated by the French chemists Antoine François, comte de Fourcroy and Louis Nicolas Vauquelin (1800), and the German chemists Johann Wolfgang Döbereiner (1821, 1822, 1832) and Justus von Liebig (1835). At room temperature, acetaldehyde (CH3CHO) is more stable than vinyl alcohol (CH2CHOH) by 42.7 kJ/mol: Overall the keto-enol tautomerization occurs slowly but is catalyzed by acids. The level at which an average consumer could detect acetaldehyde is still considerably lower than any toxicity. Pathways of exposure include air, water, land, or groundwater, as well as drink and smoke. Acetaldehyde is also created by thermal degradation or ultraviolet photo-degradation of some thermoplastic polymers during or after manufacture. The water industry generally recognizes 20–40 ppb as the taste/odor threshold for acetaldehyde. The level at which an average consumer could detect acetaldehyde is still considerably lower than any toxicity. Flavouring agent and adjuvant used to impart orange, apple and butter flavours; component of food flavourings added to milk products, baked goods, fruit juices, candy, desserts and soft drinks [DFC]

5,10-Methylene-THF

C20H23N7O6 (457.171)

5,10-Methylene-THF is an intermediate in glycine, serine and threonine metabolism and one carbon metabolism. 5,10-CH2-THF can also be used as a coenzyme in the biosynthesis of thymidine. More specifically it is the C1-donor in the reactions catalyzed by thymidylate synthase and thymidylate synthase (FAD). It also acts as a coenzyme in the synthesis of serine from glycine via the enzyme serine hydroxymethyl transferase. 5,10-Methylene-THF is a substrate for Methylenetetrahydrofolate reductase. This enzyme converts 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate. This reaction is required for the multistep process that converts the amino acid homocysteine to methionine. The body uses methionine to make proteins and other important compounds. 5,10-CH2-THF is a substrate for many enzymes including Bifunctional methylenetetrahydrofolate dehydrogenase/cyclohydrolase (mitochondrial), Aminomethyltransferase (mitochondrial), Serine hydroxymethyltransferase (mitochondrial), Methylenetetrahydrofolate reductase, C-1-tetrahydrofolate synthase (cytoplasmic), Serine hydroxymethyltransferase (cytosolic) and Thymidylate synthase. 5,10-Methylene-THF is an intermediate in the metabolism of Methane and the metabolism of Nitrogen. It is a substrate for Bifunctional methylenetetrahydrofolate dehydrogenase/cyclohydrolase (mitochondrial), Aminomethyltransferase (mitochondrial), Serine hydroxymethyltransferase (mitochondrial), Methylenetetrahydrofolate reductase, C-1-tetrahydrofolate synthase (cytoplasmic), Serine hydroxymethyltransferase (cytosolic) and Thymidylate synthase. [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Dihydroxyacetone

C3H6O3 (90.0317)

Dihydroxyacetone, also known as 1,3-dihydroxy-2-propanone or glycerone, is a member of the class of compounds known as monosaccharides. Monosaccharides are compounds containing one carbohydrate unit not glycosidically linked to another such unit, and no set of two or more glycosidically linked carbohydrate units. Monosaccharides have the general formula CnH2nOn. Dihydroxyacetone is soluble (in water) and a very weakly acidic compound (based on its pKa). Dihydroxyacetone can be found in a number of food items such as cauliflower, green bell pepper, black cabbage, and sweet basil, which makes dihydroxyacetone a potential biomarker for the consumption of these food products. Dihydroxyacetone can be found primarily in urine, as well as in human muscle and stratum corneum tissues. Dihydroxyacetone exists in all living species, ranging from bacteria to humans. Dihydroxyacetone is primarily used as an ingredient in sunless tanning products. It is often derived from plant sources such as sugar beets and sugar cane, and by the fermentation of glycerin . Dihydroxyacetone (also known as DHA) is a ketotriose compound. Its addition to blood preservation solutions results in better maintenance of 2,3-diphosphoglycerate levels during storage. It is readily phosphorylated to dihydroxyacetone phosphate by triokinase in erythrocytes. In combination with naphthoquinones, it acts as a sunscreening agent. Dihydroxyacetone is the simplest of all ketoses and, having no chiral centre, is the only one that has no optical activity. Dihydroxyacetone is a simple non-toxic sugar. It is often derived from plant sources such as sugar beets and sugar cane, by the fermentation of glycerin. Dihydroxyacetone is a white crystalline powder which is water soluble. 1,3-Dihydroxyacetone (DHA), the main active ingredient in sunless tanning skin-care preparations and an important precursor for the synthesis of various fine chemicals, is produced on an industrial scale by microbial fermentation of glycerol over Gluconobacter oxydans[1]. 1,3-Dihydroxyacetone (DHA), the main active ingredient in sunless tanning skin-care preparations and an important precursor for the synthesis of various fine chemicals, is produced on an industrial scale by microbial fermentation of glycerol over Gluconobacter oxydans[1].

4a-Carbinolamine tetrahydrobiopterin

C9H13N5O3 (239.1018)

Carbinolamine 4a-hydroxytetrahydrobiopterin is formed as a consequence of the hydroxylation of phenylalanine to tyrosine. During the physiological reaction tetrahydrobiopterin (the naturally occurring cofactor for phenylalanine hydroxylase), and the two substrates phenylalanine and molecular oxygen combine with phenylalanine hydroxylase to form a quarternary complex. An enzyme, 4a-carbinolamine dehydratase, catalyzes the reaction. (PMID: 2722790) [HMDB] Carbinolamine 4a-hydroxytetrahydrobiopterin is formed as a consequence of the hydroxylation of phenylalanine to tyrosine. During the physiological reaction tetrahydrobiopterin (the naturally occurring cofactor for phenylalanine hydroxylase), and the two substrates phenylalanine and molecular oxygen combine with phenylalanine hydroxylase to form a quarternary complex. An enzyme, 4a-carbinolamine dehydratase, catalyzes the reaction. (PMID: 2722790). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Trioxidosulfidosulfate(.1-)

HO3S2- (112.9367)

COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-Hydroxy-3-methylglutaryl-CoA

C27H44N7O20P3S (911.1575)

3-Hydroxy-3-methylglutaryl-CoA (HMG-CoA) (CAS: 1553-55-5) is formed when acetyl-CoA condenses with acetoacetyl-CoA in a reaction that is catalyzed by the enzyme HMG-CoA synthase in the mevalonate pathway or mevalonate-dependent (MAD) route, an important cellular metabolic pathway present in virtually all organisms. HMG-CoA reductase (EC 1.1.1.34) inhibitors, more commonly known as statins, are cholesterol-lowering drugs that have been widely used for many years to reduce the incidence of adverse cardiovascular events. HMG-CoA reductase catalyzes the rate-limiting step in the mevalonate pathway and these agents lower cholesterol by inhibiting its synthesis in the liver and in peripheral tissues. Androgen also stimulates lipogenesis in human prostate cancer cells directly by increasing transcription of the fatty acid synthase and HMG-CoA-reductase genes (PMID: 14689582). (s)-3-hydroxy-3-methylglutaryl-coa, also known as hmg-coa or hydroxymethylglutaroyl coenzyme a, is a member of the class of compounds known as (s)-3-hydroxy-3-alkylglutaryl coas (s)-3-hydroxy-3-alkylglutaryl coas are 3-hydroxy-3-alkylglutaryl-CoAs where the 3-hydroxy-3-alkylglutaryl component has (S)-configuration. Thus, (s)-3-hydroxy-3-methylglutaryl-coa is considered to be a fatty ester lipid molecule (s)-3-hydroxy-3-methylglutaryl-coa is slightly soluble (in water) and an extremely strong acidic compound (based on its pKa). (s)-3-hydroxy-3-methylglutaryl-coa can be found in a number of food items such as watercress, burdock, spirulina, and chicory, which makes (s)-3-hydroxy-3-methylglutaryl-coa a potential biomarker for the consumption of these food products (s)-3-hydroxy-3-methylglutaryl-coa may be a unique S.cerevisiae (yeast) metabolite.

Nitric oxide

NO (29.998)

The biologically active molecule nitric oxide (NO) is a simple, membrane-permeable gas with unique chemistry. It is formed by the conversion of L-arginine to L-citrulline, with the release of NO. The enzymatic oxidation of L-arginine to L-citrulline takes place in the presence of oxygen and NADPH using flavin adenine dinucleotide (FAD), flavin mononucleotide (FMN), heme, thiol, and tetrahydrobiopterin as cofactors. The enzyme responsible for the generation of NO is nitric oxide synthase (E.C. 1.7.99.7; NOS). Three NOS isoforms have been described and shown to be encoded on three distinct genes: neuronal NOS (nNOS, NOS type I), inducible NOS (NOS type II), and endothelial NOS (eNOS, NOS type III). Two of them are constitutively expressed and dependent on the presence of calcium ions and calmodulin to function (nNOS and eNOS), while iNOS is considered non-constitutive and calcium-independent. However, experience has shown that constitutive expression of nNOS and eNOS is not as rigid as previously thought (i.e. either present or absent), but can be dynamically controlled during development and in response to injury. Functionally, NO may act as a hormone, neurotransmitter, paracrine messenger, mediator, cytoprotective molecule, and cytotoxic molecule. NO has multiple cellular molecular targets. It influences the activity of transcription factors, modulates upstream signaling cascades, mRNA stability and translation, and processes the primary gene products. In the brain, many processes are linked to NO. NO activates its receptor, soluble guanylate cyclase by binding to it. The stimulation of this enzyme leads to increased synthesis of the second messenger, cGMP, which in turn activates cGMP-dependent kinases in target cells. NO exerts a strong influence on glutamatergic neurotransmission by directly interacting with the N-methyl-D-aspartate (NMDA) receptor. Neuronal NOS is connected to NMDA receptors (see below) and sharply increases NO production following activation of this receptor. Thus, the level of endogenously produced NO around NMDA synapses reflects the activity of glutamate-mediated neurotransmission. However, there is recent evidence showing that non-NMDA glutamate receptors (i.e. AMPA and type I metabotropic receptors) also contribute to NO generation. Besides its influence on glutamate, NO is known to have effects on the storage, uptake and/or release of most other neurotransmitters in the CNS (acetylcholine, dopamine, noradrenaline, GABA, taurine, and glycine) as well as of certain neuropeptides. Finally, since NO is a highly diffusible molecule, it may reach extrasynaptic receptors at target cell membranes that are some distance away from the place of NO synthesis. NO is thus capable of mediating both synaptic and nonsynaptic communication processes. NO is a potent vasodilator (a major endogenous regulator of vascular tone), and an important endothelium-dependent relaxing factor. NO is synthesized by NO synthases (NOS) and NOS are inhibited by asymmetrical dimethylarginine (ADMA). ADMA is metabolized by dimethylarginine dimethylaminohydrolase (DDAH) and excreted in the kidneys. Lower ADMA levels in pregnant women compared to non-pregnant controls suggest that ADMA has a role in vascular dilatation and blood pressure changes. Several studies show an increase in ADMA levels in pregnancies complicated with preeclampsia. Elevated ADMA levels in preeclampsia are seen before clinical symptoms have developed; these findings suggest that ADMA has a role in the pathogenesis of preeclampsia. In some pulmonary hypertensive states such as ARDS, the production of endogenous NO may be impaired. Nitric oxide inhalation selectively dilates the pulmonary circulation. Significant systemic vasodilation does not occur because NO is inactivated by rapidly binding to hemoglobin. In an injured lung with pulmonary hypertension, inhaled NO produces local vasodilation of well-ventilated lung units and may "steal" blood flow away from unventil... D002317 - Cardiovascular Agents > D014665 - Vasodilator Agents > D045462 - Endothelium-Dependent Relaxing Factors D019141 - Respiratory System Agents > D018927 - Anti-Asthmatic Agents > D001993 - Bronchodilator Agents D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents D018377 - Neurotransmitter Agents > D064426 - Gasotransmitters D000975 - Antioxidants > D016166 - Free Radical Scavengers D020011 - Protective Agents > D000975 - Antioxidants R - Respiratory system

(S)-2,3-Epoxysqualene

C30H50O (426.3861)

(S)-2,3-Epoxysqualene, also known as 2,3-oxidosqualene or (S)-squalene-2,3-epoxide, belongs to the class of organic compounds known as triterpenoids. These are terpene molecules containing six isoprene units. Thus, (S)-2,3-epoxysqualene is considered to be an isoprenoid lipid molecule. (S)-2,3-Epoxysqualene is a very hydrophobic molecule, practically insoluble (in water), and relatively neutral. (S)-2,3-Epoxysqualene is an intermediate in the biosynthesis of terpenoid. It is a substrate for squalene monooxygenase and lanosterol synthase. (S)-2,3-Epoxysqualene is an intermediate in the biosynthesis of Terpenoid. It is a substrate for Squalene monooxygenase and Lanosterol synthase. [HMDB]. (S)-2,3-Epoxysqualene is found in many foods, some of which are new zealand spinach, lime, cassava, and cloves.

GDP-4-Dehydro-6-deoxy-D-mannose

C16H23N5O15P2 (587.0666)

GDP-4-Dehydro-6-deoxy-D-mannose is an intermediate in the fucosylation of mammalian cells. The functional significance of these fucosylated glycans is unclear, although there is evidence that the sialyl Lex determinant participaates in leukocyte adhesion and trafficking processes. GDP-4-Dehydro-6-deoxy-D-mannose is generated by GDP-D-mannose-4,6-dehydratase (GMD). This compound is then converted by the FX protein (GDP-4-keto-6-D-deoxymannose epimerase/GDP-4-keto-6-L-galactose reductase) to GDP-L-fucose. (PMID: 11698403) [HMDB]. GDP-4-Dehydro-6-deoxy-D-mannose is found in many foods, some of which are bayberry, cherimoya, greenthread tea, and pulses. GDP-4-Dehydro-6-deoxy-D-mannose is an intermediate in the fucosylation of mammalian cells. The functional significance of these fucosylated glycans is unclear, although there is evidence that the sialyl Lex determinant participaates in leukocyte adhesion and trafficking processes. GDP-4-Dehydro-6-deoxy-D-mannose is generated by GDP-D-mannose-4,6-dehydratase (GMD). This compound is then converted by the FX protein (GDP-4-keto-6-D-deoxymannose epimerase/GDP-4-keto-6-L-galactose reductase) to GDP-L-fucose. (PMID: 11698403). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Sodium

Na+ (22.9898)

Na+, also known as sodium ion or na(+), is a member of the class of compounds known as homogeneous alkali metal compounds. Homogeneous alkali metal compounds are inorganic compounds containing only metal atoms,with the largest atom being a alkali metal atom. Na+ can be found in a number of food items such as nanking cherry, opium poppy, alpine sweetvetch, and salmonberry, which makes na+ a potential biomarker for the consumption of these food products. Na+ can be found primarily in blood, cerebrospinal fluid (CSF), saliva, and urine, as well as in human kidney tissue. Na+ exists in all eukaryotes, ranging from yeast to humans. In humans, na+ is involved in several metabolic pathways, some of which include eplerenone action pathway, betaxolol action pathway, furosemide action pathway, and morphine action pathway. Na+ is also involved in several metabolic disorders, some of which include diltiazem action pathway, bendroflumethiazide action pathway, dimethylthiambutene action pathway, and lidocaine (antiarrhythmic) action pathway. NA, N.A., Na, or n/a may refer to: . Sodium ions are necessary for regulation of blood and body fluids, transmission of nerve impulses, heart activity, and certain metabolic functions. Physiologically, it exists as an ion in the body. Sodium is needed by animals, which maintain high concentrations in their blood and extracellular fluids, but the ion is not needed by plants. The human requirement for sodium in the diet is less than 500 mg per day, which is typically less than a tenth as much as many diets "seasoned to taste." Most people consume far more sodium than is physiologically needed. For certain people with salt-sensitive blood pressure, this extra intake may cause a negative effect on health.

Selenium

Se (79.9165)

Selenium-dependent enzymes and selenoprotein P regulate immune and endothelial cell function. (PMID: 16607122). Thyroid hormone synthesis, metabolism and action require adequate availability of the essential trace elements iodine and selenium, which affect homeostasis of thyroid hormone-dependent metabolic pathways. The three selenocysteine-containing iodothyronine deiodinases constitute a novel gene family. Selenium is retained and deiodinase expression is maintained at almost normal levels in the thyroid gland, the brain and several other endocrine tissues during selenium deficiency, thus guaranteeing adequate local and systemic levels of the active thyroid hormone T(3). (PMID: 16131327). The trace element nutrient selenium (Se) discharges its well-known nutritional antioxidant activity through the Se-dependent glutathione peroxidases. It also regulates nuclear factor activities by redox mechanisms through the selenoprotein thioredoxin reductases. Converging data from epidemiological, ecological, and clinical studies have shown that Se can decrease the risk for some types of human cancers, especially those of the prostate, lung, and colon. Mechanistic studies have indicated that the methylselenol metabolite pool has many desirable attributes of chemoprevention, targeting both cancer cells and vascular endothelial cells, whereas the hydrogen selenide pool in excess of selenoprotein synthesis can lead to DNA single strand breaks, which may be mediated by some reactive oxygen species. (PMID: 16356132). SePP (selenoprotein P) is the major transporter of Se in the serum. Moreover, in the sanctuary area of the brain, SePP was shown to play a hitherto unexpected role as a local Se storage and recycling protein that directly maintains brain Se levels. Physiologically, it exists as an ion in the body. The function of Se is important in normal brain metabolism, redox regulation, antioxidant defenses, thyroid hormone metabolism and the development of neurodegenerative conditions. (PMID: 15720294). In areas where soils are low in bioavailable selenium (Se), potential Se deficiencies cause health risks for humans. (PMID: 16028492) Dietary selenium comes from cereals, meat, fish, and eggs. The recommended dietary allowance for adults is 55 micrograms per day. D020011 - Protective Agents > D000975 - Antioxidants D018977 - Micronutrients > D014131 - Trace Elements Essential dietary component

4-hydroxybenzoyl-CoA

C28H40N7O18P3S (887.1363)

4-Hydroxybenzoyl-CoA is an intermediate in Fluorobenzoate degradation. 4-Hydroxybenzoyl-CoA is converted from 4-Fluorobenzoyl-CoA via the enzyme 4-chlorobenzoyl-CoA dehalogenase (EC 3.8.1.7). [HMDB]. 4-Hydroxybenzoyl-CoA is found in many foods, some of which are chinese chives, mustard spinach, salmonberry, and sunflower. 4-Hydroxybenzoyl-CoA is an intermediate in Fluorobenzoate degradation. 4-Hydroxybenzoyl-CoA is converted from 4-Fluorobenzoyl-CoA via the enzyme 4-chlorobenzoyl-CoA dehalogenase (EC 3.8.1.7). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Nicotinamide riboside

C11H15N2O5+ (255.0981)

Nicotinamide riboside is involved in nicotinate and nicotinamide metabolism. Nicotinamide riboside was originally identified as a nutrient in milk. It is a useful compound for the elevation of NAD+ levels in humans. Nicotinamide riboside has recently been discovered to be an NAD(+) precursor that is converted into nicotinamide mononucleotide by specific nicotinamide riboside kinases, Nrk1 and Nrk2. It has been shown that exogenous nicotinamide riboside promotes Sir2-dependent repression of recombination, improves gene silencing, and extends the lifespan of certain animal models without calorie restriction (PMID: 17482543). Supplementation in mammalian cells and mouse tissues increases NAD(+) levels and activates SIRT1 and SIRT3, culminating in enhanced oxidative metabolism and protection against high-fat diet-induced metabolic abnormalities (PMID: 22682224). Recent data suggest that nicotinamide riboside may be the only vitamin precursor that supports neuronal NAD+ synthesis (PMID: 18429699). Nicotinamide riboside kinase has an essential role in the phosphorylation of nicotinamide riboside and the cancer drug tiazofurin (PMID: 15137942). Nicotinamide riboside is involved in nicotinate and nicotinamide metabolism. Nicotinamide riboside has been identified as a nutrient in milk. It is a useful compound for elevation of NAD+ levels in humans. Recent data suggest that nicotinamide riboside may be the only vitamin precursor that supports neuronal NAD+ synthesis (PMID: 18429699). Nicotinamide riboside kinase has an essential role for phosphorylation of nicotinamide riboside and the cancer drug tiazofurin (PMID 15137942). [HMDB] COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials, COVID-19 Disease Map C26170 - Protective Agent > C275 - Antioxidant Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-Methylglutaconyl-CoA

C27H42N7O19P3S (893.1469)

3-Methylglutaconyl-CoA is a substrate for Methylglutaconyl-CoA hydratase (mitochondrial), Methylcrotonoyl-CoA carboxylase beta chain (mitochondrial) and Methylcrotonoyl-CoA carboxylase alpha chain (mitochondrial). [HMDB]. 3-Methylglutaconyl-CoA is found in many foods, some of which are cocoa bean, evening primrose, winter squash, and rocket salad (sspecies). 3-Methylglutaconyl-CoA is a substrate for Methylglutaconyl-CoA hydratase (mitochondrial), Methylcrotonoyl-CoA carboxylase beta chain (mitochondrial) and Methylcrotonoyl-CoA carboxylase alpha chain (mitochondrial). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

4-Hydroxyphenylacetaldehyde

C8H8O2 (136.0524)

4-Hydroxyphenylacetaldehyde is a byproduct of tyrosine metabolism. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3,4-Dihydroxyphenylacetaldehyde

C8H8O3 (152.0473)

3,4-Dihydroxyphenylacetaldehyde (DOPAL) is a metabolite of the monoamine oxidase-catalyzed oxidative deamination of dopamine. Aldehydes are highly reactive molecules formed during the biotransformation of numerous endogenous and exogenous compounds, including biogenic amines. DOPAL generates a free radical and activates mitochondrial permeability transition, a mechanism implicated in neuron death. There is an increasing body of evidence suggesting that these compounds are neurotoxic, and it has been recently hypothesized that neurodegenerative disorders may be associated with increased levels of this biogenic aldehyde. It is possible to speculate that reduced detoxification of 3,4- dihydroxymandelaldehyde from impaired or deficient aldehyde dehydrogenase function may be a contributing factor in the suggested neurotoxicity of these compounds. Aldehyde dehydrogenases are a group of NAD(P)+ -dependent enzymes that catalyze the oxidation of aldehydes, such as those derived from catecholamines, to their corresponding carboxylic acids. To date, 19 aldehyde dehydrogenase genes have been identified in the human genome. Mutations in these genes and subsequent inborn errors in aldehyde metabolism are the molecular basis of several diseases. Several pharmaceutical agents and environmental toxins (i.e.: 4-hydroxy-2-nonenal) are also known to disrupt or inhibit aldehyde dehydrogenase function. (PMID: 17379813, 14697885, 11164826, 16956664 [HMDB]. 3,4-Dihydroxyphenylacetaldehyde is found in many foods, some of which are asian pear, pak choy, papaya, and abiyuch. 3,4-Dihydroxyphenylacetaldehyde (DOPAL) is a metabolite of the monoamine oxidase-catalyzed oxidative deamination of dopamine. Aldehydes are highly reactive molecules formed during the biotransformation of numerous endogenous and exogenous compounds, including biogenic amines. DOPAL generates a free radical and activates mitochondrial permeability transition, a mechanism implicated in neuron death. There is an increasing body of evidence suggesting that these compounds are neurotoxic, and it has been recently hypothesized that neurodegenerative disorders may be associated with increased levels of this biogenic aldehyde. It is possible to speculate that reduced detoxification of 3,4- dihydroxymandelaldehyde from impaired or deficient aldehyde dehydrogenase function may be a contributing factor in the suggested neurotoxicity of these compounds. Aldehyde dehydrogenases are a group of NAD(P)+ -dependent enzymes that catalyze the oxidation of aldehydes, such as those derived from catecholamines, to their corresponding carboxylic acids. To date, 19 aldehyde dehydrogenase genes have been identified in the human genome. Mutations in these genes and subsequent inborn errors in aldehyde metabolism are the molecular basis of several diseases. Several pharmaceutical agents and environmental toxins (i.e.: 4-hydroxy-2-nonenal) are also known to disrupt or inhibit aldehyde dehydrogenase function. (PMID: 17379813, 14697885, 11164826, 16956664. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Dihydroneopterin triphosphate

C9H16N5O13P3 (494.9957)

The biosynthesis of tetrahydrobiopterin (BH4) from dihydroneopterin triphosphate (NH2P3) was studied in human liver extract. The phosphate-eliminating enzyme (PEE) was purified approximately 750-fold. The conversion of NH2P3 to BH4 was catalyzed by this enzyme in the presence of partially purified sepiapterin reductase, Mg2+, and NADPH. The PEE is heat stable when heated at 80°C for 5 min. It has a molecular weight of 63 000 daltons. One possible intermediate 6-(1-hydroxy-2-oxopropyl)5,6,7,8-tetrahydropterin(2-oxo-tetrahydropte rin) was formed upon incubation of BH4 in the presence of sepiapterin reductase and NADP+ at pH 9.0. The reduction of this compound with NaBD4 yielded monodeutero-, threo-, and erythro-BH4; the deuterium was incorporated at the 2 position. This and the UV spectra were consistent with a 2-oxo-tetrahydropterin structure. Dihydrofolate reductase (DHFR) catalyzed the reduction of BH2 into BH4 and was found to be specific for the pro-R-NADPH side. The sepiapterin reductase catalyzed the transfer of the pro-S hydrogen of NADPH during the reduction of sepiapterin into BH2. In the presence of crude liver extracts, the conversion of NH2P3 into BH4 requires NADPH. Two deuterium atoms were incorporated from (4S-2H)NADHP in the 1 and 2 position of the BH4 side chain. The incorporation of one hydrogen from the solvent was found at position C(6). These results are consistent with the occurrence of an intramolecular redox exchange between the pteridine nucleus and the side chain and formation of 6-pyruvoyl-5,6,7,8-tetrahydropterin(tetrahydro-1-2-dioxopterin) as an intermediate (PMID: 3930838). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Imidazole-4-acetaldehyde

C5H6N2O (110.048)

Imidazole-4-acetaldehyde is a naturally occurring aldehyde metabolite of histamine formed by the action of histaminase (E.C. 1.4.3.6), and can be synthesized by oxidation of histidine. Aldehyde dehydrogenase (EC 1.2.1.3) is the only enzyme in the human liver capable of catalyzing dehydrogenation of aldehydes arising via monoamine, diamine, and plasma amine oxidases. NAD-linked dehydrogenation of short chain aliphatic aldehydes has been found in virtually every organ of the mammalian body. Imidazole-4-acetaldehyde is a good substrate for all aldehyde dehydrogenase isozymes. Experimentally, the prebiotic formation of histidine has been accomplished by the reaction of erythrose with formamidine followed by a Strecker synthesis. Imidazole-4-acetaldehyde could have been converted to histidine on the primitive earth by a Strecker synthesis, and several prebiotic reactions could convert imidazole-4-glycol and imidazole-4-ethanol to imidazole-4-acetaldehyde. (PMID: 2071588, 2957640, 11536478). Imidazole-4-acetaldehyde is a member of the class of compounds known as imidazoles. Imidazoles are compounds containing an imidazole ring, which is an aromatic five-member ring with two nitrogen atoms at positions 1 and 3, and three carbon atoms. Imidazole-4-acetaldehyde is soluble (in water) and a very weakly acidic compound (based on its pKa). Imidazole-4-acetaldehyde can be found in a number of food items such as wild celery, alaska wild rhubarb, orange bell pepper, and common beet, which makes imidazole-4-acetaldehyde a potential biomarker for the consumption of these food products. In humans, imidazole-4-acetaldehyde is involved in the histidine metabolism. Imidazole-4-acetaldehyde is also involved in histidinemia, which is a metabolic disorder. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Phosphoroselenoic acid

H3O3PSe (161.8985)

Phosphoroselenoic acid, H3SePO3, is the activated selenium donor compound required for the biosynthesis of selenocysteyl-tRNA, the precursor of specific selenocysteine residues in bacterial and mammalian selenoproteins. Phosphoroselenoic acid is also the selenium donor used to synthesize selenocysteine (Sec), the 21st amino acid, which is co-translationally incorporated into selenoproteins at in-frame UGA codons. A number of enzymes have selenocysteine residues and, in some cases, the residues are located at their active sites. Proteins containing selenocysteine have been described in all three domains of life (PMID: 18156471). Selenophosphate synthetase (EC 2.7.9.3, human SPS1, the product of the selD gene) produces monoselenophosphate from selenide and ATP. The SPS1-encoded enzyme depends on a selenium salvage system that recycles L-selenocysteine. Selenophosphate synthetase genes play a role in a cancer cells response to ionizing radiation and its reaction product, selenophosphate, might be involved in cancer prevention in a p53-dependent manner and could be applied to the development of a novel cancer therapy (PMID: 8986768, 10609888, 16786570). Phosphoroselenoic acid, H3SePO3, is the activated selenium donor compound required for the biosynthesis of selenocysteyl-tRNA, the precursor of specific selenocysteine residues in bacterial and mammalian selenoproteins. Selenocysteine is the 21st amino acid, because Sec has a specific tRNA and codon UGA, and shares a major stop codon UGA. A number of enzymes have selenocysteine, residues and in some cases at their active sites. Proteins containing the 21st amino acid, selenocysteine (Sec), have been described in all three domains of life. (PMID: 18156471) [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Hydroxyacetone

C3H6O2 (74.0368)

Hydroxyacetone, also known as acetol or acetone alcohol, belongs to the class of organic compounds known as alpha-hydroxy ketones. These are organic compounds containing a carboxylic acid, and an amine group attached to the alpha carbon atom, relative to the C=O group. Hydroxyacetone exists in all living organisms, ranging from bacteria to humans. Hydroxyacetone is a sweet, caramel, and ethereal tasting compound. hydroxyacetone has been detected, but not quantified in several different foods, such as bog bilberries, cardoons, amaranths, black salsifies, and komatsuna. This could make hydroxyacetone a potential biomarker for the consumption of these foods. Hydroxyacetone is an intermediate in glycine, serine, and threonine metabolism. Present in beer, tobacco and honey Hydroxyacetone is an endogenous metabolite. Hydroxyacetone is an endogenous metabolite.

Zymosterol intermediate 2

C27H44O (384.3392)

Zymosterol, also known as 5alpha-cholesta-8,24-dien-3beta-ol or delta8,24-cholestadien-3beta-ol, belongs to cholesterols and derivatives class of compounds. Those are compounds containing a 3-hydroxylated cholestane core. Thus, zymosterol is considered to be a sterol lipid molecule. Zymosterol is practically insoluble (in water) and an extremely weak acidic compound (based on its pKa). Zymosterol can be synthesized from 5alpha-cholestane. Zymosterol is also a parent compound for other transformation products, including but not limited to, 4beta-methylzymosterol-4alpha-carboxylic acid, 3-dehydro-4-methylzymosterol, and zymosterol intermediate 1b. Zymosterol can be found in a number of food items such as squashberry, hard wheat, salmonberry, and loquat, which makes zymosterol a potential biomarker for the consumption of these food products. Zymosterol exists in all eukaryotes, ranging from yeast to humans. In humans, zymosterol is involved in several metabolic pathways, some of which include zoledronate action pathway, alendronate action pathway, pravastatin action pathway, and atorvastatin action pathway. Zymosterol is also involved in several metabolic disorders, some of which include cholesteryl ester storage disease, lysosomal acid lipase deficiency (wolman disease), smith-lemli-opitz syndrome (SLOS), and chondrodysplasia punctata II, X linked dominant (CDPX2). Zymosterol is an intermediate in cholesterol biosynthesis. Disregarding some intermediate compounds (e.g. 4-4-dimethylzymosterol) lanosterol can be considered a precursor of zymosterol in the cholesterol synthesis pathway. The conversion of zymosterol into cholesterol happens in the endoplasmic reticulum. Zymosterol accumulates quickly in the plasma membrane coming from the cytosol. The movement of zymosterol across the cytosol is more than twice as fast as the movement of cholesterol itself . Zymosterol is the precursor of cholesterol and is found in the plasma membrane. zymosterol circulates within the cells. The structural features of zymosterol provided optimal substrate acceptability. In human fibroblasts, zymosterol is converted to cholesterol solely in the rough ER. Little or no zymosterol or cholesterol accumulates in the rough ER in vivo. Newly synthesized zymosterol moves to the plasma membrane without a detectable lag and with a half-time of 9 min, about twice as fast as cholesterol. The pool of radiolabeled zymosterol in the plasma membrane turns over rapidly, faster than does intracellular cholesterol. Thus, plasma membrane zymosterol is not stagnant. [3H]Zymosterol pulsed into intact cells is initially found in the plasma membrane. (PMID: 1939176). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3,4-Dihydroxymandelaldehyde

C8H8O4 (168.0423)

3,4-Dihydroxymandelaldehyde is the monoamine oxidase (MAO) aldehyde metabolite of both norepinephrine and epinephrine. 3,4- dihydroxymandelaldehyde generates a free radical and activates mitochondrial permeability transition, a mechanism implicated in neuron death. There is an increasing body of evidence suggesting that these compounds are neurotoxic, and it has been recently hypothesized that neurodegenerative disorders may be associated with increased levels of this biogenic aldehyde. It is possible to speculate that reduced detoxification of 3,4- dihydroxymandelaldehyde from impaired or deficient aldehyde dehydrogenase function may be a contributing factor in the suggested neurotoxicity of these compounds. Aldehyde dehydrogenases are a group of NAD(P)+ -dependent enzymes that catalyze the oxidation of aldehydes, such as those derived from catecholamines, to their corresponding carboxylic acids. To date, 19 aldehyde dehydrogenase genes have been identified in the human genome. Mutations in these genes and subsequent inborn errors in aldehyde metabolism are the molecular basis of several diseases. Several pharmaceutical agents and environmental toxins are also known to disrupt or inhibit aldehyde dehydrogenase function. (PMID: 17379813, 14697885, 11164826). 3,4-dihydroxymandelaldehyde, also known as alpha,3,4-trihydroxybenzeneacetaldehyde or dhmal, is a member of the class of compounds known as phenylacetaldehydes. Phenylacetaldehydes are compounds containing a phenylacetaldehyde moiety, which consists of a phenyl group substituted at the second position by an acetalydehyde. 3,4-dihydroxymandelaldehyde is soluble (in water) and a very weakly acidic compound (based on its pKa). 3,4-dihydroxymandelaldehyde can be found in a number of food items such as canola, lentils, grass pea, and moth bean, which makes 3,4-dihydroxymandelaldehyde a potential biomarker for the consumption of these food products. In humans, 3,4-dihydroxymandelaldehyde is involved in a couple of metabolic pathways, which include disulfiram action pathway and tyrosine metabolism. 3,4-dihydroxymandelaldehyde is also involved in several metabolic disorders, some of which include dopamine beta-hydroxylase deficiency, alkaptonuria, hawkinsinuria, and tyrosinemia, transient, of the newborn. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Homovanillin

C9H10O3 (166.063)

3 -Methoxy-4-hydroxyphenylacetaldehyde is an intermediary aldehyde of dopamine metabolism, metabolized by the class I human liver alcohol dehydrogenases (ADHs) . ADH catalyzes both ethanol and acetaldehyde, and the dopamine intermediates compete for the same site of ADH, a basis for the ethanol-induced in vivo alterations of dopamine metabolism. (PMID 2432930) [HMDB] 3 -Methoxy-4-hydroxyphenylacetaldehyde is an intermediary aldehyde of dopamine metabolism, metabolized by the class I human liver alcohol dehydrogenases (ADHs). ADH catalyzes both ethanol and acetaldehyde, and the dopamine intermediates compete for the same site of ADH, a basis for the ethanol-induced in vivo alterations of dopamine metabolism. (PMID 2432930). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

5-Hydroxyindoleacetaldehyde

C10H9NO2 (175.0633)

5-Hydroxyindoleacetaldehyde, also known as 5-HIAL, belongs to the class of organic compounds known as hydroxyindoles. These are organic compounds containing an indole moiety that carries a hydroxyl group. Within humans, 5-hydroxyindoleacetaldehyde participates in a number of enzymatic reactions. In particular, 5-hydroxyindoleacetaldehyde can be biosynthesized from serotonin through its interaction with the enzyme kynurenine 3-monooxygenase. In humans, 5-hydroxyindoleacetaldehyde is involved in tryptophan metabolism. Outside of the human body, 5-hydroxyindoleacetaldehyde has been detected, but not quantified in, several different foods, such as garden rhubarbs, black radish, oriental wheat, garden tomato, and wild leeks. This could make 5-hydroxyindoleacetaldehyde a potential biomarker for the consumption of these foods. 5-Hydroxyindoleacetaldehyde is a biogenic aldehyde of serotonin derived from the action of monoamine oxidase (MAO) (PMID: 11306106, 2470392). 5-hydroxyindoleacetaldehyde, also known as 5-hial, is a member of the class of compounds known as hydroxyindoles. Hydroxyindoles are organic compounds containing an indole moiety that carries a hydroxyl group. 5-hydroxyindoleacetaldehyde is slightly soluble (in water) and a very weakly acidic compound (based on its pKa). 5-hydroxyindoleacetaldehyde can be found in a number of food items such as durian, squashberry, black huckleberry, and daikon radish, which makes 5-hydroxyindoleacetaldehyde a potential biomarker for the consumption of these food products. 5-hydroxyindoleacetaldehyde can be found primarily in blood, feces, and urine, as well as in human kidney and liver tissues. In humans, 5-hydroxyindoleacetaldehyde is involved in the tryptophan metabolism. D006133 - Growth Substances > D010937 - Plant Growth Regulators > D007210 - Indoleacetic Acids COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-Hydroxykynurenamine

C9H12N2O2 (180.0899)

This compound belongs to the family of Phenylpropylamines. These are compounds containing a phenylpropylamine moiety, which consists of a phenyl group substituted at the third carbon by an propan-1-amine. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Quinoline-4,8-diol

C9H7NO2 (161.0477)

This compound belongs to the family of Hydroxyquinolines. These are compounds containing a quinoline moiety bearing an hydroxyl group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

4,6-Dihydroxyquinoline

C9H7NO2 (161.0477)

4,6-Dihydroxyquinoline is the product of the conversion of 5-hydroxykynurenamine by the enzyme monoamine oxidase, both metabolites from the 5-hydroxytryptophan metabolism. (PMIDs 7160021, 312499) [HMDB] 4,6-Dihydroxyquinoline is the product of the conversion of 5-hydroxykynurenamine by the enzyme monoamine oxidase, both metabolites from the 5-hydroxytryptophan metabolism. (PMIDs 7160021, 312499). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

N4-Acetylaminobutanal

C6H11NO2 (129.079)

N4-Acetylaminobutanal is an intermediate of the urea cycle and metabolism of amino groups, the product of the enzyme monoamine oxidase A [EC:1.4.3.4] and the substrate of the enzyme aldehyde dehydrogenase 2 family (mitochondrial) [EC:1.2.1.3]. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

1-Methylpyrrolinium

C5H10N1+ (84.0813)

This compound belongs to the family of Pyrrolines. These are compounds containing a pyrroline ring, which is a five-member unsaturated aliphatic ring with one nitrogen atom and four carbon atoms.

25-Hydroxycholesterol

C27H46O2 (402.3498)

25-Hydroxycholesterol is steroid derivative that suppresses the cleavage of sterol regulatory element binding proteins (SREBPs). It also induces apoptosis through down-regulation of Bcl-2 expression and activation of caspases. 25-Hydroxycholesterol also enhances Interleukin-1 beta (IL-1beta-induced) IL-8 production.(PMID: 17086498 ). 25-hydroxycholesterol is endogenously produced from cholesterol at early time intervals after cholesterol ingestion. It inhibits HMG-CoA reductase and so it also plays a significant role in the in vivo regulation of cholesterol biosynthesis after an acute dietary cholesterol challenge. [HMDB] 25-Hydroxycholesterol is steroid derivative that suppresses the cleavage of sterol regulatory element binding proteins (SREBPs). It also induces apoptosis through down-regulation of Bcl-2 expression and activation of caspases. 25-Hydroxycholesterol also enhances Interleukin-1 beta (IL-1beta-induced) IL-8 production.(PMID: 17086498). 25-hydroxycholesterol is endogenously produced from cholesterol at early time intervals after cholesterol ingestion. It inhibits HMG-CoA reductase and so it also plays a significant role in the in vivo regulation of cholesterol biosynthesis after an acute dietary cholesterol challenge. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 25-Hydroxycholesterol is a metabolite of cholesterol that is produced and secreted by macrophages in response to Toll-like receptor (TLR) activation. 25-hydroxycholesterol is a potent (EC50≈65 nM) and selective suppressor of IgA production by B cells.

3-Oxooctadecanoyl-CoA

C39H68N7O18P3S (1047.3554)

3-Oxooctadecanoyl-CoA is a metabolite intermediate in the microsomal fatty acid chain elongation system. Microsomal electron-transport components NADPH-cytochrome P450 reductase (EC 1.6.2.4) and cytochrome b5 (EC 1.6.2.2) participate in the conversion from 3-Oxooctadecanoyl-CoA to beta-hydroxystearoyl-CoA, the first reductive step of the microsomal chain elongating system initiated by NADPH. (PMID: 6404652) [HMDB] 3-Oxooctadecanoyl-CoA is a metabolite intermediate in the microsomal fatty acid chain elongation system. Microsomal electron-transport components NADPH-cytochrome P450 reductase (EC 1.6.2.4) and cytochrome b5 (EC 1.6.2.2) participate in the conversion from 3-Oxooctadecanoyl-CoA to beta-hydroxystearoyl-CoA, the first reductive step of the microsomal chain elongating system initiated by NADPH. (PMID: 6404652).

trans-Octadec-2-enoyl-CoA

C39H68N7O17P3S (1031.3605)

trans-Octadec-2-enoyl-CoA is an intermediate in Biosynthesis of unsaturated fatty acids. trans-Octadec-2-enoyl-CoA is produced from 3-Hydroxyoctadecanoyl-CoA and then converted to Stearoyl-CoA via enzymatic reaction. [HMDB]. trans-Octadec-2-enoyl-CoA is found in many foods, some of which are parsnip, wild leek, shallot, and pasta. trans-Octadec-2-enoyl-CoA is an intermediate in Biosynthesis of unsaturated fatty acids. trans-Octadec-2-enoyl-CoA is produced from 3-Hydroxyoctadecanoyl-CoA and then converted to Stearoyl-CoA via enzymatic reaction. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

D-Sedoheptulose 7-phosphate

C7H15O10P (290.0403)

Glucose

C6H12O6 (180.0634)

D-Galactose (CAS: 59-23-4) is an aldohexose that occurs naturally in the D-form in lactose, cerebrosides, gangliosides, and mucoproteins. D-Galactose is an energy-providing nutrient and also a necessary basic substrate for the biosynthesis of many macromolecules in the body. Metabolic pathways for D-galactose are important not only for the provision of these pathways but also for the prevention of D-galactose metabolite accumulation. The main source of D-galactose is lactose in the milk of mammals, but it can also be found in some fruits and vegetables. Utilization of D-galactose in all living cells is initiated by the phosphorylation of the hexose by the enzyme galactokinase (E.C. 2.7.1.6) (GALK) to form D-galactose-1-phosphate. In the presence of D-galactose-1-phosphate uridyltransferase (E.C. 2.7.7.12) (GALT) D-galactose-1-phosphate is exchanged with glucose-1-phosphate in UDP-glucose to form UDP-galactose. Glucose-1-phosphate will then enter the glycolytic pathway for energy production. Deficiency of the enzyme GALT in galactosemic patients leads to the accumulation of D-galactose-1-phosphate. Classic galactosemia, a term that denotes the presence of D-galactose in the blood, is the rare inborn error of D-galactose metabolism, diagnosed by the deficiency of the second enzyme of the D-galactose assimilation pathway, GALT, which, in turn, is caused by mutations at the GALT gene (PMID: 15256214, 11020650, 10408771). Galactose in the urine is a biomarker for the consumption of milk. Alpha-D-Pyranose-form of the compound Galactose [CCD]. alpha-D-Galactose is found in many foods, some of which are kelp, fig, spelt, and rape. Galactose. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=59-23-4 (retrieved 2024-07-16) (CAS RN: 59-23-4). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

D-Mannose

C6H12O6 (180.0634)

D-Mannose (also called Mannose or D-mannopyranose) is a hexose or a six-carbon sugar. It is also classified as an aldohexose. It is fermentable monosaccharide and an isomer of glucose. Mannose commonly exists as two different-sized rings, the pyranose (six-membered) form and the furanose (five-membered) form. Formally, D-Mannose is the 2-epimer of glucose and exists primarily as sweet-tasting alpha- (67\\\\%) or as a bitter-tasting beta- (33\\\\%) anomer of the pyranose form (PMID: 24931670). Mannose is not an essential nutrient, meaning that it can be produced in the human body from glucose or converted into glucose. Mannose is ~5x as active as glucose in non-enzyamtic glycation, which may explain why evolution did not favor it as a biological energy source (PMID: 24931670). Mannose occurs in microbes, plants and animals. Free mannose is found in small amounts in many fruits such as oranges, apples and peaches and in mammalian plasma at 50–100 uM (PMID: 24931670). More often, mannose occurs in homo-or hetero-polymers such as yeast mannans (alpha-mannose) where it can account for nearly 16\\\\% of dry weight or in galactomannans. Coffee beans, fenugreek and guar gums are rich sources of galactomannans. However, these plant polysaccharides are not degraded in the mammalian GI tract and, therefore, provide very little bio-available mannose for glycan synthesis. The digestion of many polysaccharides and glycoproteins also yields mannose. Once mannose is released, it is phosphorylated by hexokinase to generate mannose-6-phosphate. Mannose-6-phosphate is then converted to fructose-6-phosphate, by the enzyme phosphomannose isomerase, whereupon it enters the glycolytic pathway or is converted to glucose-6-phosphate by the gluconeogenic pathway. Mannose is a dominant monosaccharide in N-linked glycosylation, which is a post-translational modification of proteins. N-linked glycosylation is initiated by the transfer of Glc3Man9GlcNAc2 to nascent glycoproteins in the endoplasmic reticulum in a co-translational manner as the protein enters the transport system. Typically, mature human glycoproteins only contain three mannose residues buried under sequential modification by GlcNAc, galactose, and sialic acid. High-mannose-type oligosaccharides have been shown to play important roles in protein quality control. Several intracellular proteins such as lectins, chaperones, and glycan-processing enzymes, are involved in this process. These include calnexin/calreticulin, UDP-glucose:glycoprotein glucosyltransferase (UGGT), cargo receptors (such as VIP36 and ERGIC-53), mannosidase-like proteins (e.g. EDEM and Htm1p) and ubiquitin ligase (Fbs). They are thought to recognize high-mannose-type glycans with subtly different structures. Mannose-binding lectin (MBL) is an important constituent of the innate immune system. This protein binds through multiple lectin domains to the repeating sugar arrays that decorate many microbial surfaces and is then able to activate the complement system through a specific protease called MBL-associated protease-2. Mannose (D-mannose) is used as a nutritional supplement, packaged as "D-mannose", to prevent recurrent urinary tract infections (PMID: 21105658). D-mannose prevents FimH-mediated bacterial adhesion in the urinary tract through a competitive inhibition mechanism. This mechanism is based on the structural similarity between D-mannose and urothelial mannosylated receptors exposed by the epithelium of the urinary tract (PMID: 21105658). When D-mannose is administered in sufficient amounts, it is rapidly absorbed and then excreted by the urinary tract where it saturates bacterial FimH, thereby preventing bacterial binding to urothelial cells. Occurs in trace amounts in apples and peaches. obtained from the hydrolysates of D-mannans of the corms of Amorphophallus konjac (devils tongue). D-Mannose is found in many foods, some of which are carob, arabica coffee, fenugreek, and mung bean. D009676 - Noxae > D011042 - Poisons > D014688 - Venoms COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS D-Mannose is a carbohydrate, which plays an important role in human metabolism, especially in the glycosylation of specific proteins. D-Mannose is a carbohydrate, which plays an important role in human metabolism, especially in the glycosylation of specific proteins.

Lactose

C12H22O11 (342.1162)

A glycosylglucose disaccharide, found most notably in milk, that consists of D-galactose and D-glucose fragments bonded through a beta-1->4 glycosidic linkage. The glucose fragment can be in either the alpha- or beta-pyranose form, whereas the galactose fragment can only have the beta-pyranose form. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Acquisition and generation of the data is financially supported by the Max-Planck-Society D000074385 - Food Ingredients > D005503 - Food Additives D010592 - Pharmaceutic Aids > D005421 - Flavoring Agents Lactose, a major sugar in the milk of most species, could regulate human’s intestinal microflora. Lactose, a major sugar in the milk of most species, could regulate human’s intestinal microflora. α-Lactose (α-D-Lactose) is the major sugar present in milk. Lactose exists in the form of two anomers, α and β. The α form normally crystallizes as a monohydrate[1][2]. α-Lactose (α-D-Lactose) is the major sugar present in milk. Lactose exists in the form of two anomers, α and β. The α form normally crystallizes as a monohydrate[1][2].

Etiocholanolone

C19H30O2 (290.2246)

Etiocholanolone is the 5-beta-reduced isomer of androsterone. Etiocholanolone is a major metabolite of testosterone and androstenedione in many mammalian species including humans. It is excreted in the urine and is androgenically inactive. Classified a ketosteroid, it causes fever (it is a pyrogen), immunostimulation and leukocytosis. The pyrogenic effect of Etiocholanolone has been shown to be due to the release of interleukin-1 (IL-1) from the leukocytes that are mobilized in response to its production or injection. Etiocholanolone has anticonvulsant activity and may be an endogenous modulator of seizure susceptibility. Significantly increased values of etiocholanolone (along with testoterone and androsterone) an be detected in the urine of men with androgenic alopecia (male pattern baldness). [HMDB] Etiocholanolone is the 5-beta-reduced isomer of androsterone. Etiocholanolone is a major metabolite of testosterone and androstenedione in many mammalian species including humans. It is excreted in the urine and is androgenically inactive. Classified a ketosteroid, it causes fever (it is a pyrogen), immunostimulation and leukocytosis. The pyrogenic effect of Etiocholanolone has been shown to be due to the release of interleukin-1 (IL-1) from the leukocytes that are mobilized in response to its production or injection. Etiocholanolone has anticonvulsant activity and may be an endogenous modulator of seizure susceptibility. Significantly increased values of etiocholanolone (along with testoterone and androsterone) an be detected in the urine of men with androgenic alopecia (male pattern baldness). D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones C308 - Immunotherapeutic Agent > C2139 - Immunostimulant COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Etiocholanolone (5β-Androsterone) is the excreted metabolite of testosterone and has anticonvulsant activity[1]. Etiocholanolone is a less potent?neurosteroid positive allosteric modulator?(PAM) of the GABAA?receptor than its?enantiomer form[2]. Etiocholanolone (5β-Androsterone) is the excreted metabolite of testosterone and has anticonvulsant activity[1]. Etiocholanolone is a less potent?neurosteroid positive allosteric modulator?(PAM) of the GABAA?receptor than its?enantiomer form[2]. Etiocholanolone (5β-Androsterone) is the excreted metabolite of testosterone and has anticonvulsant activity[1]. Etiocholanolone is a less potent?neurosteroid positive allosteric modulator?(PAM) of the GABAA?receptor than its?enantiomer form[2].

beta-N-Acetylglucosamine

C8H15NO6 (221.0899)

beta-N-Acetylglucosamine is an acylaminosugar, which is an organic compound containing a sugar linked to a chain through an N-acyl group. This compound is water-soluble. Glycosylation with beta-N-acetylglucosamine is one of the most common post-translational modifications. All animals and plants dynamically attach and remove beta-N-acetylglucosamine at serine and threonine residues on myriad nuclear and cytoplasmic proteins. beta-N-Acetylglucosamine cycling, which is tightly regulated by the concerted actions of two highly-conserved enzymes, serves as a nutrient and stress sensor. Proteins glycosylated with beta-N-acetylglucosamine can be found in almost every intracellular compartment and almost every functional class (PMID: 17460662).

2-Methylbutyryl-CoA

C26H44N7O17P3S (851.1727)

2-Methylbutyryl-CoA (CAS: 6712-02-3), also known as alpha-methylbutyryl-coenzyme A, belongs to the class of organic compounds known as acyl-CoAs. These are organic compounds containing a coenzyme A substructure linked to an acyl chain. 2-Methylbutyryl-CoA is a strong basic compound (based on its pKa). 2-Methylbutyryl-CoA is a product of isoleucine catabolism. It is converted into tiglyl-CoA by short/branched-chain acyl-CoA dehydrogenase. 2-Methylbutyryl-CoA dehydrogenase deficiency, also known as 2-methyl-3-hydroxybutyryl-CoA dehydrogenase deficiency or MBHD, is an inherited disorder in which the body is unable to process the amino acid isoleucine properly. It is caused by a mutation in the HADH2 gene. Untreated MBHD can lead to progressive loss of motor skills, mental retardation, and epilepsy. a-Methylbutyryl-CoA is a a product of isoleucine catabolism. It is converted to Tiglyl-CoA by short/branched-chain acyl-CoA dehydrogenase. 2-Methylbutyryl-CoA dehydrogenase deficiency, also called 2-Methyl-3-hydroxybutyryl-CoA dehydrogenase deficiency or MBHD, is an inherited disorder in which the body is unable to process the amino acid isoleucine properly. It is caused by a mutation in the HADH2 gene. Untreated MBHD can lead to progressive loss of motor skills, to mental retardation and to epilepsy. 2-Methylbutyryl-CoA is a substrate for Acyl-CoA dehydrogenase (short-chain specific, mitochondrial), Acyl-CoA dehydrogenase (medium-chain specific, mitochondrial) and Acyl-CoA dehydrogenase (long-chain specific, mitochondrial). [HMDB]

N-Acetylmannosamine

C8H15NO6 (221.0899)

N-Acetylmannosamine, also known as beta-ManNAcc or β-ManNAc, belongs to the class of organic compounds known as acylaminosugars. These are organic compounds containing a sugar linked to a chain through N-acyl group. Within humans, N-acetylmannosamine participates in a number of enzymatic reactions. In particular, N-acetylmannosamine can be biosynthesized from N-acetyl-D-glucosamine, which is catalyzed by the enzyme N-acylglucosamine 2-epimerase. In addition, N-acetylmannosamine and uridine 5-diphosphate can be biosynthesized from uridine diphosphate-N-acetylglucosamine; which is mediated by the enzyme bifunctional UDP-N-acetyl glucosamine 2-epimerase / N-acetylmannosamine kinase. In humans, N-acetylmannosamine is involved in the metabolic disorder called the salla disease/infantile sialic acid storage disease pathway. In the rate-limiting step of the pathway, UDP-GlcNAc is converted into ManNAc by UDP-GlcNAc 2-epimerase, encoded by the epimerase domain of GNE. Improved sialylation after the addition of ManNAc and other supporting ingredients to the culture medium not only increases manufacturing yield, but also improves therapeutic efficacy by increasing solubility, increasing half-life and reducing immunogenicity by reducing the formation of antibodies to the therapeutic glycoprotein When the GNE epimerase kinase does not function correctly in the human body thereby reducing the available ManNAc, it is reasonable to assume that treatment with ManNAc could assist with improving health benefits. There is no available therapy to treat GNE myopathy. ManNAc is the first committed biological precursor of N-acetylneuraminic acid (Neu5Ac, sialic acid). N-Acetylmannosamine is a monosaccharide involved in a range of metabolic processes. It is an amino sugar/amino acid that consists of neuraminic acids, glycolipids and glycoproteins, and is used for the synthesis of sialic acid. [Wikipedia] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Cyclic N-Acetyl-D-mannosamine (Cyclic ManNAc) is an endogenous metabolite.

D-Ribose 5-phosphate

C5H11O8P (230.0192)

D-Ribose 5-phosphate (CAS: 4300-28-1), also known as R-5-P, belongs to the class of organic compounds known as pentose phosphates. These are carbohydrate derivatives containing a pentose substituted by one or more phosphate groups. D-Ribose 5-phosphate exists in all living species, ranging from bacteria to humans. Within humans, D-ribose 5-phosphate participates in a number of enzymatic reactions. In particular, D-ribose 5-phosphate can be biosynthesized from D-ribulose 5-phosphate; which is mediated by the enzyme ribose-5-phosphate isomerase. In addition, D-ribose 5-phosphate can be biosynthesized from D-ribose; which is catalyzed by the enzyme ribokinase. Outside of the human body, D-ribose 5-phosphate has been detected, but not quantified in cow milk and rices. D-Ribose 5-phosphate is both a product and an intermediate of the pentose phosphate pathway. The last step of the oxidative reactions in the pentose phosphate pathway is the production of ribulose 5-phosphate. D-Ribose 5-phosphate is an important intermediate metabolite in the pentose phosphate pathway and in the purine metabolism pathway. The intracellular ribose 5-phosphate concentration is an important determinant of the rate of de novo purine synthesis (PMID:6699001). D-Ribose 5-phosphate is an important intermediate metabolite in the Pentose phosphate pathway (KEGG, map00030) and in the Purine metabolism pathway (KEGG, map00230).; The intracellular ribose 5-phosphate concentration is an important determinant of the rate of de novo purine synthesis. (PMID 6699001). D-Ribose 5-phosphate is found in rice. COVID info from COVID-19 Disease Map KEIO_ID R002 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

L-Arabitol

C5H12O5 (152.0685)

L-Arabitol, also known as L-arabinitol or L-lyxitol, is a member of the class of compounds known as sugar alcohols. Sugar alcohols are hydrogenated forms of carbohydrate in which the carbonyl group (aldehyde or ketone reducing sugar) has been reduced to a primary or secondary hydroxyl group. L-Arabitol is soluble in water. L-Arabitol can be found in a number of food items such as sweet potato, deerberry, moth bean, and European chestnut, which makes L-arabitol a potential biomarker for the consumption of these food products. L-Arabitol can be found in most biofluids, including urine, cerebrospinal fluid (CSF), saliva, and blood. L-Arabitol exists in all living species, ranging from bacteria to humans. Moreover, L-arabitol is found to be associated with Alzheimers disease and ribose-5-phosphate isomerase deficiency, which is an inborn error of metabolism. L-Arabitol can be formed by the reduction of either arabinose or lyxose. L-Arabitol has been reported in pentosuric acidemia (PMID:13525419). L-Arabinosinuia has been described in a patient, presented at the age of 16 months with delayed motor development and facial dysmorphism (PMID:12359133) Congenital liver cirrhosis has been recently described in a patient with highly elevated plasma and urine levels of arabitol due to transaldolase deficiency (Inherit Metab Dis 23(Suppl. 1):172, 2000). L-Arabitol has been reported in pentosuric acidemia (PMID 13525419). L-Arabinosinuia has been described in a patient, presented at the age of 16 months with delayed motor development and facial dysmorphism. (PMID 12359133) Congenital liver cirrhosis has been recently described in a patient with highly elevated plasma and urine levels of arabitol due to transaldolase deficiency. (Inherit Metab Dis 23(Suppl. 1):172, 2000.) [HMDB]. L-Arabitol is found in many foods, some of which are red raspberry, sweet orange, dandelion, and hyssop. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS L-Arabinitol is a potential biomarker for the comsuption of the food products such as sweet potato, deerberry, moth bean, and is also associated with Alzheimer's disease and ribose-5-phosphate isomerase deficiency.

Cob(I)alamin

C62H89CoN13O14P- (1329.5721)

Cob(I)alamin is the substrate of the enzyme ATP:cob(I)alamin adenosyltransferase (EC 2.5.1.17), that converts reduced cob(I)alamin to the adenosylcobalamin co-factor required for the functional activity of methylmalonyl-CoA mutase (EC 5.4.99.2). Mutations in the human MMAB gene result in a block in adenosylcobalamin synthesis and are responsible for the cblB complementation group of inherited vitamin B12 disorders, such as cobalamin malabsorption, which is an inborn error of metabolism. Vitamin B12 (cobalamin) is a complex cobalt-containing molecule that is essential to human health. It is synthesized in bacteria where it catalyzes numerous methyl transfer and intramolecular rearrangement reactions. In mammals, it is the co-factor of only two enzymes: methionine synthase, which catalyzes the transfer of a methyl group from methyltetrahydrofolate to homocysteine to form methionine, and methylmalonyl-CoA mutase, which catalyzes the rearrangement of methylmalonyl-CoA to form succinyl-CoA. For both enzymes, the vitamin must be modified through intracellular metabolism to co-factor forms: methylcobalamin (MeCbl)1 for methionine synthase and adenosylcobalamin (AdoCbl) for methylmalonyl-CoA mutase (PMID: 16439175). Cob(I)alamin is the substrate of the enzyme ATP:cob(I)alamin adenosyltransferase (EC 2.5.1.17), that converts reduced cob(I)alamin to the adenosylcobalamin co-factor required for the functional activity of methylmalonyl-CoA mutase (EC 5.4.99.2). Mutations in the human MMAB gene result in a block in adenosylcobalamin synthesis and are responsible for the cblB complementation group of inherited vitamin B12 disorders. Vitamin B12 (cobalamin) is a complex cobalt-containing molecule that is essential to human health. It is synthesized in bacteria where it catalyzes numerous methyl transfer and intramolecular rearrangement reactions. In mammals, it is the co-factor of only two enzymes: methionine synthase, which catalyzes the transfer of a methyl group from methyltetrahydrofolate to homocysteine to form methionine, and methylmalonyl-CoA mutase, which catalyzes the rearrangement of methylmalonyl-CoA to form succinyl-CoA. For both enzymes, the vitamin must be modified through intracellular metabolism to co-factor forms: methylcobalamin (MeCbl)1 for methionine synthase and adenosylcobalamin (AdoCbl) for methylmalonyl-CoA mutase. (PMID: 16439175) [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

2,3-Diketo-L-gulonate

C6H8O7 (192.027)

2,3-Diketo-L-gulonate is an intermediate in Ascorbate and aldarate metabolism. 2,3-Diketo-L-gulonate is produced from Dehydroascorbate and then converted to L-Xylonate via the enzyme Lyases (EC 4.1.1.-). [HMDB] 2,3-Diketo-L-gulonate is an intermediate in Ascorbate and aldarate metabolism. 2,3-Diketo-L-gulonate is produced from Dehydroascorbate and then converted to L-Xylonate via the enzyme Lyases (EC 4.1.1.-). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

4-Hydroxyphenyl acetate

C8H8O3 (152.0473)

This compound belongs to the family of Phenol Esters. These are aromatic compounds containing a benzene ring substituted by an hydroxyl group and an ester group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

N-Acetyl-D-galactosamine

C8H15NO6 (221.0899)

The D-enantiomer of N-acetylgalactosamine. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS D-N-Acetylgalactosamine is an endogenous metabolite.

Decaprenyl diphosphate

C50H84O7P2 (858.5692)

A polyprenol diphosphate compound having ten prenyl units with undefined stereochemistry about the double bonds. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

5-Methyltetrahydrofolate

C20H25N7O6 (459.1866)

COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 5-Methyltetrahydrofolic acid (5-Methyl THF) is a biologically active form of folic acid. 5-Methyltetrahydrofolic acid is a methylated derivate of tetrahydrofolate. 5-Methyltetrahydrofolic acid is the predominant natural dietary folate and the principal form of folate in plasma and cerebrospinal fluid[1].

4-Oxobutanoate

C4H5O3- (101.0239)

The conjugate base of 4-oxobutanoic acid; major species at pH 7.3. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Deoxycarnitine

C7H15NO2 (145.1103)

4-Trimethylammoniobutanoic acid, also known as gamma-butyrobetaine (GBB) or 3-dehydroxycarnitine, is a highly water-soluble derivative of gamma-aminobutyric acid (GABA). It is also a precursor of L-carnitine. It is a substrate of gamma butyrobetaine hydroxylase/dioxygenase (also known as BBOX) which catalyzes the formation of L-carnitine from gamma-butyrobetaine, the last step in the L-carnitine biosynthesis pathway. Carnitine is essential for the transport of activated fatty acids across the mitochondrial membrane during mitochondrial beta-oxidation. Numerous disorders have been described that lead to disturbances in energy production and in intermediary metabolism which are characterized by the production and excretion of unusual acylcarnitines. A mutation in the gene coding for carnitine-acylcarnitine translocase, or the OCTN2 transporter aetiologically, causes a carnitine deficiency that results in poor intestinal absorption of dietary L-carnitine, impaired reabsorption by the kidney, and increased urinary loss. Determination of the qualitative pattern of acylcarnitines can be of diagnostic and therapeutic importance. The betaine structure of carnitine requires special analytical procedures for recording. The ionic nature of L-carnitine causes a high water solubility which decreases with increasing chain length of the ester group in the acylcarnitines. Therefore, the distribution of L-carnitine and acylcarnitines in various organs is defined by their function and their physicochemical properties as well. High-performance liquid chromatography (HPLC) permits screening for free and total carnitine, as well as complete quantitative acylcarnitine determination, including the long-chain acylcarnitine profile (PMID: 17508264, Monatshefte fuer Chemie (2005), 136(8), 1279-1291., Int J Mass Spectrom. 1999;188:39-52.). 3-Dehydroxycarnitine is an acylcarnitine. Numerous disorders have been described that lead to disturbances in energy production and in intermediary metabolism in the organism which are characterized by the production and excretion of unusual acylcarnitines. A mutation in the gene coding for carnitine-acylcarnitine translocase or the OCTN2 transporter aetiologically causes a carnitine deficiency that results in poor intestinal absorption of dietary L-carnitine, its impaired reabsorption by the kidney and, consequently, in increased urinary loss of L-carnitine. Determination of the qualitative pattern of acylcarnitines can be of diagnostic and therapeutic importance. The betaine structure of carnitine requires special analytical procedures for recording. The ionic nature of L-carnitine causes a high water solubility which decreases with increasing chain length of the ester group in the acylcarnitines. Therefore, the distribution of L-carnitine and acylcarnitines in various organs is defined by their function and their physico-chemical properties as well. High performance liquid chromatography (HPLC) permits screening for free and total carnitine, as well as complete quantitative acylcarnitine determination, including the long-chain acylcarnitine profile. (PMID: 17508264, Monatshefte fuer Chemie (2005), 136(8), 1279-1291., Int J Mass Spectrom. 1999;188:39-52.) [HMDB] COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Betaine

C5H11NO2 (117.079)

Betaine (CAS: 107-43-7), also known as N,N,N-trimethylglycine, was named after its discovery in sugar beet (Beta vulgaris) in the 19th century. It is a small N-trimethylated amino acid, existing in zwitterionic form at neutral pH. It is now often called glycine betaine to distinguish it from other betaines that are widely distributed in microorganisms, plants, and animals. Many naturally occurring betaines serve as organic osmolytes, substances synthesized or taken up from the environment by cells for protection against osmotic stress, drought, high salinity, or high temperature. Intracellular accumulation of betaines permits water retention in cells, thus protecting from the effects of dehydration (Wikipedia). Betaine functions as a methyl donor in that it carries and donates methyl functional groups to facilitate necessary chemical processes. In particular, it methylates homocysteine to methionine, also producing N,N-dimethylglycine. The donation of methyl groups is important to proper liver function, cellular replication, and detoxification reactions. Betaine also plays a role in the manufacture of carnitine and serves to protect the kidneys from damage. Betaine comes from either the diet or by the oxidation of choline. Betaine insufficiency is associated with metabolic syndrome, lipid disorders, and diabetes, and may have a role in vascular and other diseases (PMID: 20346934). Betaine is important in development, from the pre-implantation embryo to infancy. Betaine is also widely regarded as an anti-oxidant. Betaine has been shown to have an inhibitory effect on NO release in activated microglial cells and may be an effective therapeutic component to control neurological disorders (PMID: 22801281). As a drug, betaine hydrochloride has been used as a source of hydrochloric acid in the treatment of hypochlorhydria. Betaine has also been used in the treatment of liver disorders, for hyperkalemia, for homocystinuria, and for gastrointestinal disturbances (Martindale, The Extra Pharmacopoeia, 30th Ed, p1341). Betaine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=107-43-7 (retrieved 2024-07-01) (CAS RN: 107-43-7). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Glycerophosphocholine

C8H20NO6P (257.1028)

Glycerophosphorylcholine (GPC) is a choline derivative and one of the two major forms of choline storage (along with phosphocholine) in the cytosol. Glycerophosphorylcholine is also one of the four major organic osmolytes in renal medullary cells, changing their intracellular osmolyte concentration in parallel with extracellular tonicity during cellular osmoadaptation. As an osmolyte, Glycerophosphorylcholine counteracts the effects of urea on enzymes and other macromolecules. Kidneys (especially medullar cells), which are exposed under normal physiological conditions to widely fluctuating extracellular solute concentrations, respond to hypertonic stress by accumulating the organic osmolytes glycerophosphorylcholine (GPC), betaine, myo-inositol, sorbitol and free amino acids. Increased intracellular contents of these osmolytes are achieved by a combination of increased uptake (myo-inositol and betaine) and synthesis (sorbitol, GPC), decreased degradation (GPC) and reduced osmolyte release. GPC is formed in the breakdown of phosphatidylcholine (PtC). This pathway is active in many body tissues, including mammary tissue. Choline alfoscerate, also known as glycerophosphocholine or choline glycerophosphate, is a member of the class of compounds known as glycerophosphocholines. Glycerophosphocholines are lipids containing a glycerol moiety carrying a phosphocholine at the 3-position. Choline alfoscerate is slightly soluble (in water) and a moderately acidic compound (based on its pKa). Choline alfoscerate can be found in a number of food items such as radish, strawberry guava, yellow pond-lily, and pepper (c. baccatum), which makes choline alfoscerate a potential biomarker for the consumption of these food products. L-Alpha glycerylphosphorylcholine (alpha-GPC, choline alfoscerate) is a natural choline compound found in the brain. It is also a parasympathomimetic acetylcholine precursor which may have potential for the treatment of Alzheimers disease and other dementias . N - Nervous system > N07 - Other nervous system drugs > N07A - Parasympathomimetics C78272 - Agent Affecting Nervous System > C47796 - Cholinergic Agonist D013501 - Surface-Active Agents > D054709 - Lecithins COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS sn-Glycero-3-phosphocholine (Choline Alfoscerate) is a precursor in the biosynthesis of brain phospholipids and increases the bioavailability of choline in nervous tissue. sn-Glycero-3-phosphocholine (Choline Alfoscerate) has significant effects on cognitive function with a good safety profile and tolerability, and is effective in the treatment of Alzheimer's disease and dementia[1][2].

Ubiquinol-10

C59H92O4 (864.6995)

Ubiquinol-10 is a benzoquinol and is the reduced product of ubiquinone also called coenzyme Q10.The reduction of ubiquinone to ubiquinol occurs in Complexes I&II in the electron transfer chain. The Q cycle is a process that occurs in cytochrome b[, a component of Complex III in the electron transport chain,and that converts ubiquinol to ubiquinone in a cyclic fashion. When ubiquinol binds to cytochrome b, the pKa of the phenolic group decreases so that the proton ionizes and the phenoxide anion is formed (Wikipedia). Ubiquinol-10, the reduced form of ubiquinone-10, efficiently scavenges free radicals generated chemically within liposomal membranes. Ubiquinol-10 is about as effective in preventing peroxidative damage to lipids as alpha-tocopherol, which is considered the best lipid-soluble antioxidant in humans. The number of radicals scavenged by each molecule of ubiquinol-10 is 1.1 under certain experimental conditions. In contrast to alpha-tocopherol, ubiquinol-10 is not recycled by ascorbate. However, it is known that ubiquinol-10 can be recycled by electron transport carriers present in various biomembranes and possibly by some enzymes. It is shown that ubiquinol-10 spares alpha-tocopherol when both antioxidants are present in the same liposomal membranes and that ubiquinol-10, like alpha-tocopherol, does not interact with reduced glutathione.It is suggested that ubiquinol-10 is an important physiological lipid-soluble antioxidant. [PMID: 2352956]. Ubiquinol-10 is a benzoquinol and is the reduced product of ubiquinone also called coenzyme Q10.The reduction of ubiquinone to ubiquinol occurs in Complexes I&II in the electron transfer chain. The Q cycle is a process that occurs in cytochrome b[, a component of Complex III in the electron transport chain,and that converts ubiquinol to ubiquinone in a cyclic fashion. When ubiquinol binds to cytochrome b, the pKa of the phenolic group decreases so that the proton ionizes and the phenoxide anion is formed (from wiki) COVID info from COVID-19 Disease Map, clinicaltrial, clinicaltrials, clinical trial, clinical trials Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Pristanal

C19H38O (282.2922)

Intermediate in the metabolism of phytanic acid and pristanic acid [HMDB] Intermediate in the metabolism of phytanic acid and pristanic acid. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

S-aminomethyldihydrolipoamide

C9H20N2OS2 (236.1017)

S-aminomethyldihydrolipoamide is an intermediate in the glycine, serine, threonine metabolism pathway. The enzyme glycine dehydrogenase (decarboxylating) [EC:1.4.4.2] catalyzes the production and consumption of this metabolite in the mitochondria (reversible reaction). [HMDB] S-aminomethyldihydrolipoamide is an intermediate in the glycine, serine, threonine metabolism pathway. The enzyme glycine dehydrogenase (decarboxylating) [EC:1.4.4.2] catalyzes the production and consumption of this metabolite in the mitochondria (reversible reaction). COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

beta-1,4-Mannosyl-N-acetylglucosamine

C14H25NO11 (383.1428)

beta-1,4-Mannosyl-N-acetylglucosamine, also known as 4-O-beta-D-Mannopyranosyl-N-acetyl-D-glucosamine or Man(β1-4)GlcNAc, is an intermediate in aminosugar metabolism. It is a substrate of lysosomal beta-mannosidase.

(a-D-mannosyl)2-b-D-mannosyl-N-acetylglucosamine

C26H45NO21 (707.2484)

(alpha-D-mannosyl)2-beta-D-mannosyl-N-acetylglucosamine is an intermediate in aminosugars metabolism. It is substrate of Lysosomal alpha-mannosidase. [HMDB] (alpha-D-mannosyl)2-beta-D-mannosyl-N-acetylglucosamine is an intermediate in aminosugars metabolism. It is substrate of Lysosomal alpha-mannosidase. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

4-Methylzymosterol intermediate 2

C28H44O (396.3392)

This compound belongs to the family of Cholesterols and Derivatives. These are compounds containing an hydroxylated chloestane moeity. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

4-Methylzymosterol intermediate 1

C29H46O3 (442.3447)

This compound belongs to the family of Triterpenes. These are terpene molecules containing 8 isoprene units. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-Oxohexacosanoyl-CoA

C47H84N7O18P3S (1159.4806)

3-Oxohexacosanoyl-CoA is also known as 3-Ketocerotoyl-CoA(4-) or 3-Ketohexacosanoyl-coenzyme A(4-). 3-Oxohexacosanoyl-CoA is considered to be practically insoluble (in water) and acidic COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

9Z,12Z-octadecadienoyl-CoA

C39H66N7O17P3S (1029.3449)

9Z,12Z-octadecadienoyl-CoA, also known as Linoleoyl-coenzyme A, (e,e)-isomer or Linoleoyl-CoA, is classified as a member of the Long-chain fatty acyl CoAs. Long-chain fatty acyl CoAs are acyl CoAs where the group acylated to the coenzyme A moiety is a long aliphatic chain of 13 to 21 carbon atoms. 9Z,12Z-octadecadienoyl-CoA is considered to be practically insoluble (in water) and acidic. 9Z,12Z-octadecadienoyl-CoA is a fatty ester lipid molecule COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-dehydrosphinganinium(1+)

C18H38NO2+ (300.2902)

3-dehydrosphinganinium(1+) is also known as 3-Oxosphinganine. 3-dehydrosphinganinium(1+) is considered to be practically insoluble (in water) and relatively neutral COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

N(tele)-methylhistaminium

C6H12N3+ (126.1031)

N(tele)-methylhistaminium is considered to be slightly soluble (in water) and basic COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Dehydroascorbide(1-)

C6H6O6 (174.0164)

Dehydroascorbide(1-) is classified as a member of the Furanones. Furanones are compounds containing a furan ring bearing a ketone group. Dehydroascorbide(1-) is considered to be soluble (in water) and acidic COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

ISOTHIOCYANIC ACID

CHNS (58.983)

(S)-methylmalonate-semialdehyde

C4H5O3- (101.0239)

(s)-methylmalonate-semialdehyde is a member of the class of compounds known as 1,3-dicarbonyl compounds. 1,3-dicarbonyl compounds are carbonyl compounds with the generic formula O=C(R)C(H)C(R)=O, where R and R can be any group (s)-methylmalonate-semialdehyde is soluble (in water) and a weakly acidic compound (based on its pKa). (s)-methylmalonate-semialdehyde can be found in a number of food items such as oil-seed camellia, jostaberry, yellow pond-lily, and pasta, which makes (s)-methylmalonate-semialdehyde a potential biomarker for the consumption of these food products. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

octanoate

C8H15O2- (143.1072)

Caprylic acid, or octanoic acid, with the structural formula CH3(CH2)6CO2H, is an eight-carbon straight-chain fatty acid and a carboxylic acid. It is an oily Liquid with a slightly unpleasant rancid taste and odor. It is minimally soluble in water. Caprylic acid can be found in numerous foods such as Prunus (Cherry, Plum), pineapple sages, black raspberries, shallots, coconuts and breast milk. Caprylic acid is taken as a dietary supplement. Caprylic acid is used commercially in the production of esters used in perfumery and in the manufacture of dyes. Caprylic acid is an antimicrobial pesticide used as a food contact surface sanitizer on dairy equipment, food processing equipment, breweries, wineries, and beverage processing plants. It is also used as disinfectant in health care facilities, schools/colleges, industrial facilities, recreational facilities, retail and wholesale establishments, livestock premises, restaurants, and hotels/motels. In addition, caprylic acid is used as an algicide, bactericide, fungicide, and herbicide in greenhouses and garden centers. Caprylic acid, and other fatty acids, affect the hunger hormone ghrelin. Ghrelin must be acylated, where it acquires an -OH group, before it can stimulate the hunger receptors in the hypothalamus. Caprylic acid becomes linked post-translationally to serine at the 3-position by the enzyme ghrelin O-acyltransferase (GOAT), located on the cell membrane of ghrelin cells in the stomach and pancreas (PMID 19896496). Caprylic acid affects those with medium-chain acyl-CoA dehydrogenase deficiency (MCAD), which is an inborn error of metabolism, marked by mutations of the gene ACADM. Those affected with MCAD have difficulties converting fatty acids to energy, especially during fasting. As a result, fatty acids build up and cause damage to liver and brain (PMID: 27536022). Octanoate radical, also known as caprylic acid or octanoic acid, is a member of the class of compounds known as medium-chain fatty acids. Medium-chain fatty acids are fatty acids with an aliphatic tail that contains between 4 and 12 carbon atoms. Octanoate radical is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Octanoate radical can be found in a number of food items such as soft-necked garlic, chicory, star anise, and grapefruit/pummelo hybrid, which makes octanoate radical a potential biomarker for the consumption of these food products. Octanoate radical can be found primarily in feces and urine. Moreover, octanoate radical is found to be associated with medium Chain Acyl-CoA Dehydrogenase Deficiency. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

4-Aminobutanoate

C4H9NO2 (103.0633)

COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain, binding to the ionotropic GABA receptors (GABAA receptors) and metabotropic receptors (GABAB receptors. γ-Aminobutyric acid shows calming effect by blocking specific signals of central nervous system[1][2]. γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain, binding to the ionotropic GABA receptors (GABAA receptors) and metabotropic receptors (GABAB receptors. γ-Aminobutyric acid shows calming effect by blocking specific signals of central nervous system[1][2]. γ-Aminobutyric acid (4-Aminobutyric acid) is a major inhibitory neurotransmitter in the adult mammalian brain, binding to the ionotropic GABA receptors (GABAA receptors) and metabotropic receptors (GABAB receptors. γ-Aminobutyric acid shows calming effect by blocking specific signals of central nervous system[1][2].

N-Acetylglucosamine

C8H15NO6 (221.0899)

COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS N-Acetyl-D-Glucosamine (N-Acetyl-2-amino-2-deoxy-D-glucose) is a monosaccharide derivative of glucose.

Cholesterol-d7

C27H46O (386.3548)

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Zymostenol-d7

C27H39D7O (393.3988)

Oleic acid (d5)

C18H29D5O2 (287.2873)

Linoleic acid(d4)

C18H28D4O2 (284.2653)

CAR 2:0

C9H17NO4 (203.1158)

N - Nervous system > N06 - Psychoanaleptics > N06B - Psychostimulants, agents used for adhd and nootropics D002491 - Central Nervous System Agents > D018697 - Nootropic Agents D018977 - Micronutrients > D014815 - Vitamins COVID info from COVID-19 Disease Map, clinicaltrial, clinicaltrials, clinical trial, clinical trials Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

CAR 14:0

C21H41NO4 (371.3035)

COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Tetradecanoylcarnitine is a human carnitine involved in β-oxidation of long-chain fatty acids.

Palmitic acid-16,16,16-d3

C16H32O2 (256.2402)

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diaminomethanone

CH4N2O (60.0324)

Carbonate

CO3-2 (59.9847)

In chemistry, a carbonate is a salt of carbonic acid, characterized by the presence of the carbonate ion, CO2-3. The name may also mean an ester of carbonic acid, an organic compound containing the carbonate group C(=O)(O–)2. [Wikipedia]. Carbonate is found in mango.

(4S,5S)-1,2-Dithiane-4,5-diol

C4H8O2S2 (151.9966)

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(3-Carboxy-2-(R)-hydroxy-propyl)-trimethyl-ammonium

C7H16NO3+ (162.113)

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Choline C-11

C5H14NO+ (104.1075)

C1446 - Radiopharmaceutical Compound > C2124 - Radioconjugate COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

6,8-Dimercapto-octanoic acid amide

C8H17NOS2 (207.0752)

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S-Adenosyl-L-methionine

C15H23N6O5S+ (399.1451)

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Nicotinamide adenine dinucleotide

C21H26N7O14P2- (662.1013)

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Coenzyme II

C21H25N7O17P3-3 (740.052)

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Pyruvate

C3H3O3- (87.0082)

A 2-oxo monocarboxylic acid anion that is the conjugate base of pyruvic acid, arising from deprotonation of the carboxy group.

UMP dianion

C9H11N2O9P-2 (322.0202)

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Orotate

C5H3N2O4- (155.0093)

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Methylammonium

CH6N+ (32.05)

The conjugate acid of methylamine; major species at pH 7.3.

Oxalacetate

C4H2O5-2 (129.9902)

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(R)-lipoamide

C8H15NOS2 (205.0595)

A lipoamide obtained by condensation of the carboxy group of (R)-lipoic acid with ammonia. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

5-Phosphoribosyl 1-pyrophosphate

C5H13O14P3 (389.9518)

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Hydrogen sulfate

HO4S- (96.9596)

Hydrogen phosphate

HO4P-2 (95.9612)

Oxide

O-2 (15.9949)

CDP trianion

C9H12N3O11P2-3 (399.9947)

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Uridine-diphosphate

C9H11N2O12P2-3 (400.9787)

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Uridine-triphosphate

C9H11N2O15P3-4 (479.9372)

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Pyridoxal 5-phosphate(2-)

C8H8NO6P-2 (245.0089)

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Deoxyadenosine-phosphate

C10H12N5O6P-2 (329.0525)

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3-O-phosphonatoadenosine

C10H12N5O7P-2 (345.0474)

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6-Pyruvoyl tetrahydropteridine

C9H11N5O3 (237.0862)

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[Hydroxy(oxido)phosphoryl] phosphate

HO7P2-3 (174.9198)

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D-Glucopyranuronic acid, ion(1-)

C6H9O7- (193.0348)

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Hydrogen isocyanide

CHN (27.0109)

Azanide

H2N- (16.0187)

Hydrogen oxalate

C2HO4- (88.9875)

3-hydroxybut-3-enoic Acid

C4H6O3 (102.0317)

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2-Oxoglutarate(1-)

C5H5O5- (145.0137)

A dicarboxylic acid monoanion resulting from selective deprotonation of the 1-carboxy group of 2-oxoglutaric acid. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Ethoxide

C2H5O- (45.034)

An organic anion that is the conjugate base of ethanol.

Hydridodioxygen(1+)

HO2+ (32.9977)

Hydrogenperoxide(1-)

HO2- (32.9977)

Dioxidaniumyl

H2O2+ (34.0055)

(2S)-2-[(4-{[(2-amino-4-oxo-3,4,5,6,7,8-hexahydropteridin-6-yl)methyl]amino}benzoyl)amino]pentanedioate

C19H21N7O6-2 (443.1553)

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COENZYME B12

C72H100CoN18O17P-3 (1578.6583)

B - Blood and blood forming organs > B03 - Antianemic preparations > B03B - Vitamin b12 and folic acid > B03BA - Vitamin b12 (cyanocobalamin and analogues) COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

octadecanoic-18,18,18-d3 acid

C18H36O2 (284.2715)

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2-Methylbut-2-enoyl-CoA

C26H38N7O17P3S-4 (845.1258)

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S-Adenosyl-L-methioninamine

C14H24N6O3S+2 (356.1631)

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2-Azaniumylacetate

C2H5NO2 (75.032)

Sulfurous acid

HO3S- (80.9646)

4-hydroxybenzoate

C7H5O3- (137.0239)

The conjugate base of 4-hydroxybenzoic acid, comprising a 4-hydroxybenzoic acid core with a proton missing to give a charge of -1. D010592 - Pharmaceutic Aids > D011310 - Preservatives, Pharmaceutical > D010226 - Parabens COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

NADPH(4-)

C21H26N7O17P3-4 (741.0598)

Acetylornithine

C7H14N2O3 (174.1004)

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Intropin

C8H12NO2+ (154.0868)

D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D013566 - Sympathomimetics D018377 - Neurotransmitter Agents > D015259 - Dopamine Agents D020011 - Protective Agents > D002316 - Cardiotonic Agents COVID info from COVID-19 Disease Map D002317 - Cardiovascular Agents Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-Hydroxy-kynurenine

C10H12N2O4 (224.0797)

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Tryptaminium

C10H13N2+ (161.1079)

An ammonium ion that is the conjugate acid of tryptamine arising from protonation of the primary amino group; major species at pH 7.3. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Tyraminium

C8H12NO+ (138.0919)

D018377 - Neurotransmitter Agents > D014179 - Neurotransmitter Uptake Inhibitors > D018759 - Adrenergic Uptake Inhibitors D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D013566 - Sympathomimetics An ammonium ion that is the conjugate acid of tyramine; major species at pH 7.3. D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents D049990 - Membrane Transport Modulators COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Histaminium

C5H10N3+ (112.0875)

An ammonium ion that is the conjugate acid of histamine protonated on the side-chain nitrogen. D018377 - Neurotransmitter Agents > D018494 - Histamine Agents > D017442 - Histamine Agonists COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

1,4-Butanediammonium

C4H14N2+2 (90.1157)

Spermidine(3+)

C7H22N3+3 (148.1814)

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Serotonin(1+)

C10H13N2O+ (177.1028)

An ammonium ion that is the conjugate acid of serotonin; major species at pH 7.3. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Sn-glycerol 3-phosphate(2-)

C3H7O6P-2 (169.998)

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(R)-3-Hydroxybutyrate

C4H7O3- (103.0395)

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Biotinate

C10H15N2O3S- (243.0803)

Conjugate base of biotin arising from deprotonation of the carboxy group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

2-Ammonioethyl phosphate

C2H7NO4P- (140.0113)

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2-Phenylethanaminium

C8H12N+ (122.097)

The cation obtained by protonation of the amino group of 2-phenylethylamine. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

coenzyme A(4-)

C21H32N7O16P3S-4 (763.0839)

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(3,4-Dihydroxyphenyl)acetate

C8H7O4- (167.0344)

A dihydroxy monocarboxylic acid anion that is the conjugate base of (3,4-dihydroxyphenyl)acetic acid, arising from deprotonation of the carboxy group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

(S)-3-methyl-2-oxovalerate

C6H9O3- (129.0552)

The conjugate base of (S)-3-methyl-2-oxopentanoic acid. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

DEOXYCYTIDINE-DIPHOSPHATE

C9H12N3O10P2-3 (383.9998)

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Spermine (fully protonated form)

C10H30N4+4 (206.247)

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Glycerone phosphate(2-)

C3H5O6P-2 (167.9824)

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N-methylputrescinium(2+)

C5H16N2+2 (104.1313)

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beta-NADH

C21H27N7O14P2-2 (663.1091)

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UDP-alpha-D-glucuronate(3-)

C15H19N2O18P2-3 (577.0108)

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Deoxyinosine diphosphate

C10H11N4O10P2-3 (408.995)

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Deoxyuridine-phosphate

C9H11N2O8P-2 (306.0253)

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(2E,6E)-3,7,11-Trimethyldodeca-2,6,10-trien-1-yl diphosphate

C15H25O7P2-3 (379.1075)

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Glutathione disulfide dianion

C20H30N6O12S2-2 (610.1363)

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L-Glutamate gamma-semialdehyde

C5H9NO3 (131.0582)

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5,6,7,8-Tetrahydrobiopterin

C9H15N5O3 (241.1175)

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Cysteaminium

C2H8NS+ (78.0377)

An ammonium ion that is the conjugate acid of cysteamine; major species at pH 7.3.

Agmatinium(2+)

C5H16N4+2 (132.1375)

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4-Acetamidobutanoate

C6H10NO3- (144.0661)

A monocarboxylic acid anion that is the conjugate base of 4-acetamidobutanoic acid, arising from deprotonation of the carboxy group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

N-Acetylputrescinium

C6H15N2O+ (131.1184)

An ammonium ion that is the conjugate acid of N-acetylputrescine; major species at pH 7.3. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

3-Hydroxy-2-methylpropanoate

C4H7O3- (103.0395)

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Glutathionate

C10H16N3O6S- (306.076)

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N-Acetyl-beta-neuraminate

C11H18NO9- (308.0982)

A monocarboxylic acid anion resulting from deprotonation of the carboxy group of N-acetyl-beta-neuraminic acid. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

dADP trianion

C10H12N5O9P2-3 (408.011)

4-fumarylacetoacetate(2-)

C8H6O6-2 (198.0164)

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Sphinganine(1+)

C18H40NO2+ (302.3059)

A cationic sphingoid obtained by protonation of the amino group of sphinganine. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Succinyl-CoA

C25H35N7O19P3S-5 (862.0921)

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acetyl-CoA(4-)

C23H34N7O17P3S-4 (805.0945)

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acetoacetyl-CoA(4-)

C25H36N7O18P3S-4 (847.105)

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5-xanthylate(2-)

C10H11N4O9P-2 (362.0264)

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D-glyceraldehyde 3-phosphate(2-)

C3H5O6P-2 (167.9824)

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3-(carbamoylamino)Propanoate

C4H7N2O3- (131.0457)

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S-formylglutathionate(1-)

C11H16N3O7S- (334.0709)

The conjugate base of S-formylglutathione having anionic carboxy groups and a protonated primary amino group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Deoxyadenosine-triphosphate

C10H12N5O12P3-4 (486.9695)

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UDP-N-acetyl-alpha-D-glucosamine

C17H25N3O17P2-2 (605.0659)

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[5-Hydroxy-4-(hydroxymethyl)-6-methylpyridin-3-yl]methyl phosphate

C8H10NO6P-2 (247.0246)

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nicotinic acid mononucleotide

C11H12NO9P-2 (333.025)

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3-carbamoyl-1-(5-O-phosphonato-beta-D-ribofuranosyl)pyridinium

C11H14N2O8P- (333.0488)

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(2E)-Hexadecenoyl-CoA

C37H60N7O17P3S-4 (999.2979)

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3-methylcrotonyl-CoA

C26H38N7O17P3S-4 (845.1258)

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FADH2 dianion

C27H33N9O15P2-2 (785.1571)

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Cytidine-monophosphate

C9H12N3O8P-2 (321.0362)

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3-phosphonato-5-adenylyl Sulfate(4-)

C10H11N5O13P2S-4 (502.9549)

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3,4-Dihydro-2H-Pyrrole-2-carboxylate

C5H6NO2- (112.0399)

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alpha-D-galactose 1-phosphate(2-)

C6H11O9P-2 (258.0141)

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beta-D-fructofuranose 6-phosphate(2-)

C6H11O9P-2 (258.0141)

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Adenosine 3,5-bismonophosphate(4-)

C10H11N5O10P2-4 (422.9981)

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N-acetyl-D-glucosamine 6-phosphate(2-)

C8H14NO9P-2 (299.0406)

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N(6)-(1,2-dicarboxyethyl)-AMP

C14H14N5O11P-4 (459.0427)

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dCMP dianion

C9H12N3O7P-2 (305.0413)

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(2S,3R)-2-azaniumyl-3-hydroxyoctadecyl phosphate

C18H39NO5P- (380.2566)

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Octanoyl-CoA

C29H46N7O17P3S-4 (889.1884)

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L-Selenocysteine

C3H6NO2Se (167.9564)

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D-erythrose 4-phosphate(2-)

C4H7O7P-2 (197.9929)

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lauroyl-CoA(4-)

C33H54N7O17P3S-4 (945.251)

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malonyl-CoA(5-)

C24H33N7O19P3S-5 (848.0765)

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Folate(2-)

C19H17N7O6-2 (439.124)

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stearoyl-CoA(4-)

C39H66N7O17P3S-4 (1029.3449)

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myristoyl-CoA(4-)

C35H58N7O17P3S-4 (973.2823)

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Propanoyl-CoA

C24H36N7O17P3S-4 (819.1101)

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Hexadecanoyl CoA

C37H62N7O17P3S-4 (1001.3136)

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D-pantetheine 4-phosphate(2-)

C11H21N2O7PS-2 (356.0807)

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ADP-D-ribose(2-)

C15H21N5O14P2-2 (557.056)

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GDP-L-fucose(2-)

C16H23N5O15P2-2 (587.0666)

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2,5-Diammoniopentanoate

C5H13N2O2+ (133.0977)

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(6R)-5,10-methenyltetrahydrofolate

C20H20N7O6- (454.1475)

A dicarboxylic acid anion arising from deprotonation of both carboxylic acid functions of (6R)-5,10-methenyltetrahydrofolic acid. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

alpha-D-Ribofuranose 1-phosphate

C5H9O8P-2 (228.0035)

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(e)-4-Coumaroyl-CoA

C30H38N7O18P3S-4 (909.1207)

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5-O-{[(hydroxyphosphinato)oxy]phosphinato}adenosine

C10H13N5O10P2-2 (425.0138)

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IDP trianion

C10H11N4O11P2-3 (424.99)

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GDP dianion

C10H13N5O11P2-2 (441.0087)

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2-deoxy-alpha-D-ribose 1-phosphate(2-)

C5H9O7P-2 (212.0086)

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S-methyl-5-thio-alpha-D-ribose 1-phosphate(2-)

C6H11O7PS-2 (257.9963)

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5-formamido-1-(5-phospho-D-ribosyl)imidazole-4-carboxamide(2-)

C10H13N4O9P-2 (364.042)

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3,7-Dimethyl-9-(2,6,6-trimethylcyclohex-1-en-1-yl)nona-2,4,6,8-tetraenoate

C20H27O2- (299.2011)

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FAD trianion

C27H30N9O15P2-3 (782.1337)

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(2R)-2-(3,4-dihydroxyphenyl)-2-hydroxyethanaminium

C8H12NO3+ (170.0817)

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3-oxolauroyl-CoA(4-)

C33H52N7O18P3S-4 (959.2302)

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alpha-linolenoyl-CoA(4-)

C39H60N7O17P3S-4 (1023.2979)

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D-Mannose 6-phosphate

C6H11O9P-2 (258.0141)

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D-fructofuranose 1-phosphate(2-)

C6H11O9P-2 (258.0141)

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2-deoxy-D-ribofuranose 5-phosphate(2-)

C5H9O7P-2 (212.0086)

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Seleno-L-homocysteine

C4H8NO2Se (181.972)

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(S)-3-hydroxyisobutyryl-CoA(4-)

C25H38N7O18P3S-4 (849.1207)

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10-Formyltetrahydropteroylglutamic acid

C20H23N7O7 (473.1659)

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Acetone-d6

C3H6O (58.0419)

Succinic acid-2,2,3,3-d4

C4H6O4 (118.0266)

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lipoate

C8H13O2S2- (205.0357)

A thia fatty acid anion that is the conjugate base of lipoic acid; major species at pH 7.3. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

Thymidine 5-(hydrogen phosphate)

C10H14N2O8P- (321.0488)

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Citric acid-2,2,4,4-d4

C6H8O7 (192.027)

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Hydrogen fumarate

C4H3O4- (115.0031)

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Sarcosinium

C3H8NO2+ (90.0555)

An alpha-amino-acid cation that is the conjugate acid of sarcosine, arising from protonation of the amino group.

Estra-1,3,5(10)-triene-3,17-diol

C18H24O2 (272.1776)

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Methoxide

CH3O- (31.0184)

An organic anion that is the conjugate base of methanol.

Triphosphate(1-)

H4O10P3- (256.9017)

A monovalent inorganic anion that consists of triphosphoric acid in which one of the five OH groups has been deprotonated. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

2h-Imidazol-4-Ylacetic Acid

C5H6N2O2 (126.0429)

An imidazolyl carboxylic acid that is acetic acid in which one of the methyl hydrogens is substituted by a 2H-imidazol-4-yl group. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

UDP-D-galactose(2-)

C15H22N2O17P2-2 (564.0394)

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GTP trianion

C10H13N5O14P3-3 (519.9672)

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[[[(2R,3S,4R,5R)-5-(6-Aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl]oxy-oxidophosphoryl] hydrogen phosphate

C10H13N5O13P3-3 (503.9723)

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Inosine triphosphate trianion

C10H12N4O14P3-3 (504.9563)

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N-acetyl-D-mannosamine 6-phosphate(2-)

C8H14NO9P-2 (299.0406)

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Thymidine-methyl-T

C10H14N2O5 (242.0903)

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5-Hydroxykynurenaminium(1+)

C9H13N2O2+ (181.0977)

An ammonium ion that is the conjugate base of 5-hydroxykynurenamine, arising from selective protonation of the primary alkylamino function; major species at pH 7.3. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

dGTP trianion

C10H13N5O13P3-3 (503.9723)

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N1-Protonated adenosine-5-monophosphate

C10H15N5O7P+ (348.0709)

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GDP-D-mannose(2-)

C16H23N5O16P2-2 (603.0615)

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S-adenosyl-L-homocysteinate

C14H19N6O5S- (383.1138)

A L-alpha-amino acid anion obtained by deprotonation of S-adenosyl-L-homocysteine. COVID info from COVID-19 Disease Map Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

(2Z,4E)-4-Hydroxy-6-oxo-2,4-octadienedioic acid

C8H8O6 (200.0321)

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