Gene Association: ALOX15
UniProt Search:
ALOX15 (PROTEIN_CODING)
Function Description: arachidonate 15-lipoxygenase
found 141 associated metabolites with current gene based on the text mining result from the pubmed database.
Bergenin
Bergenin is a trihydroxybenzoic acid. It has a role as a metabolite. Bergenin is a natural product found in Ficus racemosa, Ardisia paniculata, and other organisms with data available. A natural product found in Cenostigma gardnerianum. C26170 - Protective Agent > C275 - Antioxidant Annotation level-1 Bergenin is a cytoprotective and antioxidative polyphenol found in many medicinal plants. Bergenin has a wide spectrum activities such as hepatoprotective, antiinflammatory, immunomodulatory, antitumor, antiviral, and antifungal properties[1][2]. Bergenin is a cytoprotective and antioxidative polyphenol found in many medicinal plants. Bergenin has a wide spectrum activities such as hepatoprotective, antiinflammatory, immunomodulatory, antitumor, antiviral, and antifungal properties[1][2].
Aesculetin
Aesculetin, also known as cichorigenin or cichoriin aglucon, belongs to the class of organic compounds known as 6,7-dihydroxycoumarins. These are coumarins bearing two hydroxyl groups at positions 6 and 7 of the coumarin skeleton, respectively. Aesculetin is found, on average, in the highest concentration within sherries. Aesculetin has also been detected, but not quantified, in several different foods, such as horseradish, carrots, dandelions, grape wines, and highbush blueberries. This could make aesculetin a potential biomarker for the consumption of these foods. Esculetin is a hydroxycoumarin that is umbelliferone in which the hydrogen at position 6 is substituted by a hydroxy group. It is used in filters for absorption of ultraviolet light. It has a role as an antioxidant, an ultraviolet filter and a plant metabolite. Esculetin is a natural product found in Artemisia eriopoda, Euphorbia decipiens, and other organisms with data available. A hydroxycoumarin that is umbelliferone in which the hydrogen at position 6 is substituted by a hydroxy group. It is used in filters for absorption of ultraviolet light. Metabolite of infected sweet potato. Aesculetin is found in many foods, some of which are root vegetables, wild carrot, sweet basil, and carrot. D020011 - Protective Agents > D000975 - Antioxidants Acquisition and generation of the data is financially supported in part by CREST/JST. [Raw Data] CB031_Aesculetin_pos_20eV_CB000017.txt [Raw Data] CB031_Aesculetin_pos_10eV_CB000017.txt [Raw Data] CB031_Aesculetin_pos_40eV_CB000017.txt [Raw Data] CB031_Aesculetin_pos_50eV_CB000017.txt [Raw Data] CB031_Aesculetin_pos_30eV_CB000017.txt [Raw Data] CB031_Aesculetin_neg_10eV_000010.txt [Raw Data] CB031_Aesculetin_neg_20eV_000010.txt [Raw Data] CB031_Aesculetin_neg_30eV_000010.txt CONFIDENCE standard compound; ML_ID 39 Esculetin is an active ingredient extracted mainly from the bark of Fraxinus rhynchophylla. Esculetin inhibits platelet-derived growth factor (PDGF)-induced airway smooth muscle cells (ASMCs) phenotype switching through inhibition of PI3K/Akt pathway. Esculetin has antioxidant, antiinflammatory, and antitumor activities[1]. Esculetin is an active ingredient extracted mainly from the bark of Fraxinus rhynchophylla. Esculetin inhibits platelet-derived growth factor (PDGF)-induced airway smooth muscle cells (ASMCs) phenotype switching through inhibition of PI3K/Akt pathway. Esculetin has antioxidant, antiinflammatory, and antitumor activities[1]. Esculetin is an active ingredient extracted mainly from the bark of Fraxinus rhynchophylla. Esculetin inhibits platelet-derived growth factor (PDGF)-induced airway smooth muscle cells (ASMCs) phenotype switching through inhibition of PI3K/Akt pathway. Esculetin has antioxidant, antiinflammatory, and antitumor activities[1].
Protodioscin
Protodioscin is a spirostanyl glycoside that consists of the trisaccharide alpha-L-Rha-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc attached to position 3 of 26-(beta-D-glucopyranosyloxy)-3beta,22-dihydroxyfurost-5-ene via a glycosidic linkage. Found in several plant species including yams, asparagus and funugreek. It has a role as a metabolite. It is a steroid saponin, a trisaccharide derivative, a beta-D-glucoside, a pentacyclic triterpenoid and a cyclic hemiketal. It is functionally related to a diosgenin. It derives from a hydride of a spirostan. Protodioscin is a natural product found in Dracaena draco, Borassus flabellifer, and other organisms with data available. See also: Fenugreek seed (part of). Asparasaponin I is found in fenugreek. Asparasaponin I is a bitter principle from white asparagus shoots (Asparagus officinalis) and fenugreek (Trigonella foenum-graecum From Asparagus officinalis (asparagus) Protodioscin, a major steroidal saponin in Trigonella foenum-graecum Linn., has been shown to exhibit multiple biological actions, such as anti-hyperlipidemia, anti-cancer, sexual effects and cardiovascular properties. Protodioscin, a major steroidal saponin in Trigonella foenum-graecum Linn., has been shown to exhibit multiple biological actions, such as anti-hyperlipidemia, anti-cancer, sexual effects and cardiovascular properties.
Leonurine
Leonurine is a trihydroxybenzoic acid. Leonurine is a natural product found in Leonotis leonurus and Leonurus sibiricus with data available. Leonurine is an alkaloid isolated from Leonurus artemisia, with anti-oxidative and anti-inflammatory. Leonurine is an alkaloid isolated from Leonurus artemisia, with anti-oxidative and anti-inflammatory.
Cepharanthine
Cepharanthine is a bisbenzylisoquinoline alkaloid from tubers of Stephania; stimulates recovery of immunologic function in lymphatic system after administration of antineoplastic agents or x-irradiation. It is a member of isoquinolines and a bisbenzylisoquinoline alkaloid. Cepharanthine is a natural product found in Stephania sinica, Stephania cephalantha, and other organisms with data available. A bisbenzylisoquinoline alkaloid from tubers of Stephania; stimulates recovery of immunologic function in lymphatic system after administration of antineoplastic agents or x-irradiation. C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent > C2198 - Nonnarcotic Analgesic COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D020011 - Protective Agents > D011837 - Radiation-Protective Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000893 - Anti-Inflammatory Agents D000970 - Antineoplastic Agents D018501 - Antirheumatic Agents Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Origin: Plant; SubCategory_DNP: Isoquinoline alkaloids, Benzylisoquinoline alkaloids Cepharanthine is a natural product that can be isolated from the plant Stephania?cephalantha?Hayata. Cepharanthine has anti-severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2) activities. Cepharanthine has good effective in suppressing viral proliferation (half maximal (50\\%) inhibitory concentration (IC50) and 90\\% inhibitory concentration (IC90) values of 1.90 and 4.46?μM[1]. Cepharanthine can also effectively reverses P-gp-mediated multidrug resistance in K562 cells and increase enhances the sensitivity of anticancer agents in xenograft mice model[2][3]. Cepharanthine shows inhibitory effects of human liver cytochrome P450 enzymes CYP3A4, CYP2E1 and CYP2C9. Cepharanthine has antitumor, anti-inflammatory and antinociceptive effects[4][5][6][7][8]. Cepharanthine is a natural product that can be isolated from the plant Stephania?cephalantha?Hayata. Cepharanthine has anti-severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2) activities. Cepharanthine has good effective in suppressing viral proliferation (half maximal (50\%) inhibitory concentration (IC50) and 90\% inhibitory concentration (IC90) values of 1.90 and 4.46?μM[1]. Cepharanthine can also effectively reverses P-gp-mediated multidrug resistance in K562 cells and increase enhances the sensitivity of anticancer agents in xenograft mice model[2][3]. Cepharanthine shows inhibitory effects of human liver cytochrome P450 enzymes CYP3A4, CYP2E1 and CYP2C9. Cepharanthine has antitumor, anti-inflammatory and antinociceptive effects[4][5][6][7][8].
Kurarinone
(2S)-(-)-kurarinone is a trihydroxyflavanone that is (2S)-flavanone substituted by hydroxy groups at positions 7, 2 and 4, a lavandulyl group at position 8 and a methoxy group at position 5. Isolated from the roots of Sophora flavescens, it exhibits cytotoxicity against human myeloid leukemia HL-60 cells. It has a role as a metabolite and an antineoplastic agent. It is a trihydroxyflavanone, a monomethoxyflavanone and a member of 4-hydroxyflavanones. It is functionally related to a (2S)-flavanone. 7,2,4-Trihydroxy-8-lavandulyl-5-methoxyflavanone is a natural product found in Albizia julibrissin, Cunila, and other organisms with data available. A trihydroxyflavanone that is (2S)-flavanone substituted by hydroxy groups at positions 7, 2 and 4, a lavandulyl group at position 8 and a methoxy group at position 5. Isolated from the roots of Sophora flavescens, it exhibits cytotoxicity against human myeloid leukemia HL-60 cells. Kurarinone, a flavanoid derived from shrub Sophora flavescens, inhibits the process of experimental autoimmune encephalomyelitis via blocking Th1 and Th17 cell differentiation[1]. Kurarinone, a flavanoid derived from shrub Sophora flavescens, inhibits the process of experimental autoimmune encephalomyelitis via blocking Th1 and Th17 cell differentiation[1].
Moupinamide
N-feruloyltyramine is a member of tyramines. It has a role as a metabolite. Moupinamide is a natural product found in Zanthoxylum beecheyanum, Polyalthia suberosa, and other organisms with data available. See also: Tobacco Leaf (part of); Cannabis sativa subsp. indica top (part of); Ipomoea aquatica leaf (part of). Alkaloid from Piper nigrum. Moupinamide is found in many foods, some of which are nutmeg, amaranth, sapodilla, and orange bell pepper. Moupinamide is found in eggplant. Moupinamide is an alkaloid from Piper nigru CASMI2013 Challenge_1 MS2 data; [MS1] MSJ00001 CASMI2013 Challenge_1 MS1 data; [MS2] MSJ00002 N-trans-Feruloyltyramine (N-feruloyltyramine), an alkaloid from Piper nigru, is an inhibitor of COX1 and COX2, with potential antioxidant properties. N-trans-Feruloyltyramine possesses anti-inflammatory activity[1]. N-trans-Feruloyltyramine (N-feruloyltyramine), an alkaloid from Piper nigru, is an inhibitor of COX1 and COX2, with potential antioxidant properties. N-trans-Feruloyltyramine possesses anti-inflammatory activity[1].
Yamogenin
Yamogenin is a triterpenoid. Yamogenin is a natural product found in Cordyline australis, Solanum spirale, and other organisms with data available. See also: Dioscorea polystachya tuber (part of). Diosgenin, a steroidal saponin, can inhibit STAT3 signaling pathway[1]. Diosgenin is an exogenous activator of Pdia3/ERp57[2]. Diosgenin inhibits aortic atherosclerosis progression by suppressing macrophage miR-19b expression[5]. Diosgenin, a steroidal saponin, can inhibit STAT3 signaling pathway[1]. Diosgenin is an exogenous activator of Pdia3/ERp57[2]. Diosgenin inhibits aortic atherosclerosis progression by suppressing macrophage miR-19b expression[5].
3,4-Dimethoxybenzaldehyde
Veratraldehyde appears as needles or chunky light peach powder. Has an odor of vanilla beans. (NTP, 1992) Veratraldehyde is a dimethoxybenzene that is benzaldehyde substituted by methoxy groups at positions 3 and 4. It is found in peppermint, ginger, raspberry, and other fruits. It has a role as an antifungal agent. It is a member of benzaldehydes and a dimethoxybenzene. 3,4-Dimethoxybenzaldehyde is a natural product found in Polygala senega, Pluchea sagittalis, and other organisms with data available. 3,4-Dimethoxybenzaldehyde is found in fruits. 3,4-Dimethoxybenzaldehyde is isolated from peppermint, raspberry, ginger and Bourbon vanilla. 3,4-Dimethoxybenzaldehyde is used in vanilla flavour Isolated from peppermint, raspberry, ginger and Bourbon vanilla. It is used in vanilla flavours. 3,4-Dimethoxybenzaldehyde is found in peppermint, herbs and spices, and fruits. CONFIDENCE standard compound; INTERNAL_ID 1016; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3940; ORIGINAL_PRECURSOR_SCAN_NO 3939 CONFIDENCE standard compound; INTERNAL_ID 1016; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3955; ORIGINAL_PRECURSOR_SCAN_NO 3954 CONFIDENCE standard compound; INTERNAL_ID 1016; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3930; ORIGINAL_PRECURSOR_SCAN_NO 3929 CONFIDENCE standard compound; INTERNAL_ID 1016; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3941; ORIGINAL_PRECURSOR_SCAN_NO 3940 CONFIDENCE standard compound; INTERNAL_ID 1016; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3963; ORIGINAL_PRECURSOR_SCAN_NO 3961 CONFIDENCE standard compound; INTERNAL_ID 1016; DATASET 20200303_ENTACT_RP_MIX508; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 3961; ORIGINAL_PRECURSOR_SCAN_NO 3960 Veratraldehyde is an important chemical used in perfumery, agrochemical, and pharmaceutical industries. Veratraldehyde is an important chemical used in perfumery, agrochemical, and pharmaceutical industries.
Geranyl acetate
Geranyl acetate is a clear colorless liquid with an odor of lavender. (NTP, 1992) Geranyl acetate is a monoterpenoid that is the acetate ester derivative of geraniol. It has a role as a plant metabolite. It is an acetate ester and a monoterpenoid. It is functionally related to a geraniol. Geranyl acetate is a natural product found in Nepeta nepetella, Xylopia sericea, and other organisms with data available. See also: Lemon oil, cold pressed (part of); Coriander Oil (part of); Java citronella oil (part of). Neryl acetate is found in cardamom. Neryl acetate is found in citrus, kumquat and pummelo peel oils, ginger, cardamon, clary sage, myrtle leaf and myrtle berries. Neryl acetate is a flavouring agent A monoterpenoid that is the acetate ester derivative of geraniol. Geranyl acetate, an acyclic monoterpene ester derived from geraniol, is widely used in the cosmetics industry due to its pleasant scent[1]. Geranyl acetate can induces cell apoptosis[2]. Geranyl acetate, an acyclic monoterpene ester derived from geraniol, is widely used in the cosmetics industry due to its pleasant scent[1]. Geranyl acetate can induces cell apoptosis[2].
24,25-Dihydrolanosterol
24,25-dihydrolanosterol is a 3beta-sterol formed from lanosterol by reduction across the C-24-C-25 double bond. It has a role as a human metabolite and a mouse metabolite. It is a 3beta-sterol and a tetracyclic triterpenoid. It is functionally related to a lanosterol. 24,25-Dihydrolanosterol is a natural product found in Euphorbia sapinii, Heterobasidion annosum, and other organisms with data available. 24,25-dihydrolanosterol is a metabolite found in or produced by Saccharomyces cerevisiae. 24,25-Dihydrolanosterol is involved in the biosynthesis of steriods. 24,25-Dihydrolanosterol is reversibly converted to lanosterol by delta24-sterol reductase [EC:1.3.1.72]. A 3beta-sterol formed from lanosterol by reduction across the C-24-C-25 double bond. 24,25-Dihydrolanosterol (Lanostenol) is a component of the seeds of red pepper (Capsicum annuum)[1].
5-Methoxyindoleacetate
5-Methoxyindoleacetate, also known as 5-methoxy-IAA or 5-MIAA, belongs to the class of organic compounds known as indole-3-acetic acid derivatives. Indole-3-acetic acid derivatives are compounds containing an acetic acid (or a derivative) linked to the C3 carbon atom of an indole. 5-Methoxyindoleacetic acid is formed through oxidative deamination. It is identified in the urine, and the concentration is determined to be 1.3 µg/mL using GC-MS (PMID: 12908946). An increase in urinary 5-MIAA excretion was shown in patients with cancer of the stomach, rectum, and lung (PMID: 2446428). D006133 - Growth Substances > D010937 - Plant Growth Regulators > D007210 - Indoleacetic Acids 5-methoxyindoleacetic acid(5-MIAA) is formed through oxidative deamination. COVID info from PDB, Protein Data Bank KEIO_ID M078; [MS2] KO009067 KEIO_ID M078 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 5-Methoxyindole-3-acetic acid is a metabolite of Melatonin[1].
Eicosapentaenoic acid
Icosapent, also known as icosapentaenoate or (5z,8z,11z,14z,17z)-eicosapentaenoic acid, is a member of the class of compounds known as long-chain fatty acids. Long-chain fatty acids are fatty acids with an aliphatic tail that contains between 13 and 21 carbon atoms. Thus, icosapent is considered to be a fatty acid lipid molecule. Icosapent is practically insoluble (in water) and a weakly acidic compound (based on its pKa). Icosapent can be found in a number of food items such as barley, sacred lotus, white lupine, and rape, which makes icosapent a potential biomarker for the consumption of these food products. Icosapent can be found primarily in blood, feces, sweat, and urine, as well as throughout most human tissues. In humans, icosapent is involved in the alpha linolenic acid and linoleic acid metabolism. Moreover, icosapent is found to be associated with essential hypertension and hypertension. Ethyl eicosapentaenoic acid (E-EPA, icosapent ethyl) is a derivative of the omega-3 fatty acid eicosapentaenoic acid (EPA) that is used in combination with changes in diet to lower triglyceride levels in adults with severe (≥ 500 mg/dL) hypertriglyceridemia. This was the second class of fish oil-based drug to be approved for use as a drug and was approved by the FDA in 2012. These fish oil drugs are similar to fish oil dietary supplements but the ingredients are better controlled and have been tested in clinical trials . The anti-inflammatory, antithrombotic and immunomodulatory actions of EPA is probably due to its role in eicosanoid physiology and biochemistry. Most eicosanoids are produced by the metabolism of omega-3 fatty acids, specifically, arachidonic acid. These eicosanoids, leukotriene B4 (LTB4) and thromboxane A2 (TXA2) stimulate leukocyte chemotaxis, platelet aggregation and vasoconstriction. They are thrombogenic and artherogenic. On the other hand, EPA is metabolized to leukotriene B5 (LTB5) and thromboxane A3 (TXA3), which are eicosanoids that promote vasodilation, inhibit platelet aggregation and leukocyte chemotaxis and are anti-artherogenic and anti-thrombotic. The triglyceride-lowering effect of EPA results from inhibition of lipogenesis and stimulation of fatty acid oxidation. Fatty acid oxidation of EPA occurs mainly in the mitochondria. EPA is a substrate for Prostaglandin-endoperoxide synthase 1 and 2. It also appears to affect the function and bind to the Carbohydrate responsive element binding protein (ChREBP) and to a fatty acid receptor (G-coupled receptor) known as GP40 (DrugBank). Eicosapentaenoic acid (EPA or also icosapentaenoic acid) is an important polyunsaturated fatty acid found in fish oils. It serves as the precursor for the prostaglandin-3 and thromboxane-3 families. A diet rich in eicosapentaenoic acid lowers serum lipid concentration, reduces incidence of cardiovascular disorders, prevents platelet aggregation, and inhibits arachidonic acid conversion into the thromboxane-2 and prostaglandin-2 families. Eicosapentaenoic acid is an omega-3 fatty acid. In physiological literature, it is given the name 20:5(n-3). Its systematic chemical name is all-cis-5,8,11,14,17-icosapentaenoic acid. It also has the trivial name timnodonic acid. Chemically, EPA is a carboxylic acid with a 20-carbon chain and five cis double bonds; the first double bond is located at the third carbon from the omega end. Because of the presence of double bonds, EPS is a polyunsaturated fatty acid. Metabolically it acts as a precursor for prostaglandin-3 (which inhibits platelet aggregation), thromboxane-3, and leukotriene-5 groups. It is found in fish oils of cod liver, herring, mackerel, salmon, menhaden, and sardine. It is also found in human breast milk (Wikipedia). Chemical was purchased from CAY 90110 (Lot. 0443819-6); Diagnostic ions: 301.2, 257.1, 202.9 CONFIDENCE standard compound; INTERNAL_ID 305 Eicosapentaenoic Acid (EPA) is an orally active Omega-3 long-chain polyunsaturated fatty acid (ω-3 LC-PUFA). Eicosapentaenoic Acid exhibits a DNA demethylating action that promotes the re-expression of the tumor suppressor gene CCAAT/enhancer-binding protein δ (C/EBPδ). Eicosapentaenoic Acid activates RAS/ERK/C/EBPβ pathway through H-Ras intron 1 CpG island demethylation in U937 leukemia cells. Eicosapentaenoic Acid can promote relaxation of vascular smooth muscle cells and vasodilation[1][2][3]. Eicosapentaenoic Acid (EPA) is an orally active Omega-3 long-chain polyunsaturated fatty acid (ω-3 LC-PUFA). Eicosapentaenoic Acid exhibits a DNA demethylating action that promotes the re-expression of the tumor suppressor gene CCAAT/enhancer-binding protein δ (C/EBPδ). Eicosapentaenoic Acid activates RAS/ERK/C/EBPβ pathway through H-Ras intron 1 CpG island demethylation in U937 leukemia cells. Eicosapentaenoic Acid can promote relaxation of vascular smooth muscle cells and vasodilation[1][2][3].
N-alpha-acetylornithine
N2-Acetylornithine, also known as N(alpha)-acetylornithine, belongs to the class of organic compounds known as N-acyl-L-alpha-amino acids. These are N-acylated alpha-amino acids which have the L-configuration of the alpha-carbon atom. N-Acetylornithine is a minor component of the deproteinized blood plasma of human blood. Human blood plasma contains a variable amount of acetylornithine, averaging 1.1 +/- 0.4 umol/L (range 0.8-0.2 umol/L). Urine contains a very small amount of acetylornithine, approximately 1 nmol/mg creatinine (1 umol/day) (PMID:508804). Acquisition and generation of the data is financially supported in part by CREST/JST. CONFIDENCE standard compound; INTERNAL_ID 160 KEIO_ID A032 N-Acetylornithine is an intermediate in the enzymatic biosynthesis of the amino acid L-arginine from L-glutamate.
20-Hydroxyeicosatetraenoic acid
20-Hydroxyeicosatetraenoic acid (20-HETE) is a metabolite of arachidonic acid. Cytochrome P450 enzymes of the 4A and 4F families catalyze the omega-hydroxylation of arachidonic acid and produce 20-HETE. 20-HETE is a potent constrictor of renal, cerebral, and mesenteric arteries. The vasoconstrictor response to 20-HETE is associated with activation of protein kinase, Rho kinase, and the mitogen-activated protein (MAP) kinase pathway C. 20-HETE also increases intracellular Ca2+ by causing the depolarization of vascular smooth muscle membrane secondary to blocking the large-conductance Ca2+-activated K+-channels and by a direct effect on L-type Ca channels. Elevations in the production of 20-HETE mediate the myogenic response of skeletal, renal, and cerebral arteries to elevations in transmural pressure. There is an important interaction between nitric oxide (NO) and the formation of 20-HETE production. NO inhibits the formation of 20-HETE formation in renal and cerebral arteries. A fall in levels of 20-HETE contributes to the cyclic GMP-independent dilator effect of NO to activate the large-conductance Ca2+-activated K+-channels and to dilate the cerebral arteries (PMID: 16258232). Metabolite produced during NADPH dependent enzymatic oxidation of arachidonic acid. Potent vasoconstrictor [CCD]
rofecoxib
M - Musculo-skeletal system > M01 - Antiinflammatory and antirheumatic products > M01A - Antiinflammatory and antirheumatic products, non-steroids > M01AH - Coxibs D018501 - Antirheumatic Agents > D000894 - Anti-Inflammatory Agents, Non-Steroidal > D016861 - Cyclooxygenase Inhibitors D004791 - Enzyme Inhibitors > D016861 - Cyclooxygenase Inhibitors > D052246 - Cyclooxygenase 2 Inhibitors C78272 - Agent Affecting Nervous System > C241 - Analgesic Agent > C2198 - Nonnarcotic Analgesic C274 - Antineoplastic Agent > C1742 - Angiogenesis Inhibitor > C80509 - COX-2 Inhibitor D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics C471 - Enzyme Inhibitor > C1323 - Cyclooxygenase Inhibitor COVID info from COVID-19 Disease Map D000893 - Anti-Inflammatory Agents Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
Linoleic acid
Linoleic acid is a doubly unsaturated fatty acid, also known as an omega-6 fatty acid, occurring widely in plant glycosides. In this particular polyunsaturated fatty acid (PUFA), the first double bond is located between the sixth and seventh carbon atom from the methyl end of the fatty acid (n-6). Linoleic acid is an essential fatty acid in human nutrition because it cannot be synthesized by humans. It is used in the biosynthesis of prostaglandins (via arachidonic acid) and cell membranes (From Stedman, 26th ed). Linoleic acid is found to be associated with isovaleric acidemia, which is an inborn error of metabolism. Linoleic acid (LA) is an organic compound with the formula HOOC(CH2)7CH=CHCH2CH=CH(CH2)4CH3. Both alkene groups (−CH=CH−) are cis. It is a fatty acid sometimes denoted 18:2 (n-6) or 18:2 cis-9,12. A linoleate is a salt or ester of this acid.[5] Linoleic acid is a polyunsaturated, omega-6 fatty acid. It is a colorless liquid that is virtually insoluble in water but soluble in many organic solvents.[2] It typically occurs in nature as a triglyceride (ester of glycerin) rather than as a free fatty acid.[6] It is one of two essential fatty acids for humans, who must obtain it through their diet,[7] and the most essential, because the body uses it as a base to make the others. The word "linoleic" derives from Latin linum 'flax', and oleum 'oil', reflecting the fact that it was first isolated from linseed oil.
Aloeemodin
Aloe emodin is a dihydroxyanthraquinone that is chrysazin carrying a hydroxymethyl group at position 3. It has been isolated from plant species of the genus Aloe. It has a role as an antineoplastic agent and a plant metabolite. It is a dihydroxyanthraquinone and an aromatic primary alcohol. It is functionally related to a chrysazin. Aloe-emodin is a natural product found in Rhamnus davurica, Aloe succotrina, and other organisms with data available. See also: Frangula purshiana Bark (part of). Aloeemodin is found in green vegetables. Aloeemodin is found in aloes, also bark of cascara sagrada Rhamnus purshiana, Chinese rhubarb Rheum palmatum and Rheum undulatum (rhubarb).Aloe emodin is an anthraquinone present in aloe latex, an exudate from the aloe plant. It has a strong stimulant-laxative action. (Wikipedia A dihydroxyanthraquinone that is chrysazin carrying a hydroxymethyl group at position 3. It has been isolated from plant species of the genus Aloe. CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5097; ORIGINAL_PRECURSOR_SCAN_NO 5094 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8556; ORIGINAL_PRECURSOR_SCAN_NO 8554 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8561; ORIGINAL_PRECURSOR_SCAN_NO 8559 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8572; ORIGINAL_PRECURSOR_SCAN_NO 8570 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5090; ORIGINAL_PRECURSOR_SCAN_NO 5089 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5096; ORIGINAL_PRECURSOR_SCAN_NO 5093 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5085; ORIGINAL_PRECURSOR_SCAN_NO 5082 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8558; ORIGINAL_PRECURSOR_SCAN_NO 8556 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8554; ORIGINAL_PRECURSOR_SCAN_NO 8550 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5082; ORIGINAL_PRECURSOR_SCAN_NO 5079 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 5104; ORIGINAL_PRECURSOR_SCAN_NO 5099 CONFIDENCE standard compound; INTERNAL_ID 1086; DATASET 20200303_ENTACT_RP_MIX507; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 8540; ORIGINAL_PRECURSOR_SCAN_NO 8539 Aloe emodin is a hydroxyanthraquinone extracted from aloe leaves and has been shown to have anti-tumor activity in vitro and in vivo. Aloe emodin is a hydroxyanthraquinone extracted from aloe leaves and has been shown to have anti-tumor activity in vitro and in vivo.
12(S)-HPETE
12-HPETE is one of the six monohydroperoxy fatty acids produced by the non-enzymatic oxidation of arachidonic acid (Leukotrienes). Reduction of the hydroperoxide yields the more stable hydroxyl fatty acid (+/-)12-HETE. A family of biologically active compounds derived from arachidonic acid by oxidative metabolism through the 5-lipoxygenase pathway. They participate in host defense reactions and pathophysiological conditions such as immediate hypersensitivity and inflammation. They have potent actions on many essential organs and systems, including the cardiovascular, pulmonary, and central nervous system as well as the gastrointestinal tract and the immune system. 12-HPETE is one of the six monohydroperoxy fatty acids produced by the non-enzymatic oxidation of arachidonic acid (Leukotrienes). Reduction of the hydroperoxide yields the more stable hydroxyl fatty acid (+/-)12-HETE. D006401 - Hematologic Agents > D010975 - Platelet Aggregation Inhibitors D002317 - Cardiovascular Agents > D014662 - Vasoconstrictor Agents
Docosahexaenoic acid
Docosahexaenoic acid (DHA) is an omega-3 essential fatty acid. Chemically, DHA is a carboxylic acid with a 22-carbon chain and six cis- double bonds with the first double bond located at the third carbon from the omega end. DHA is most often found in fish oil. It is a major fatty acid in sperm and brain phospholipids, especially in the retina. Dietary DHA can reduce the level of blood triglycerides in humans, which may reduce the risk of heart disease (Wikipedia). Docosahexaenoic acid is found to be associated with isovaleric acidemia, which is an inborn error of metabolism. Extensively marketed as a dietary supplement in Japan [DFC]. Doconexent is found in many foods, some of which are mung bean, fruit preserve, northern pike, and snapper. COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Docosahexaenoic Acid (DHA) is an omega-3 fatty acid abundantly present brain and retina. It can be obtained directly from fish oil and maternal milk.
12-HETE
12-Hydroxyeicosatetraenoic acid (CAS: 71030-37-0), also known as 12-HETE, is an eicosanoid, a 5-lipoxygenase metabolite of arachidonic acid. 5-Lipoxygenase (LO)-derived leukotrienes are involved in inflammatory glomerular injury. LO product 12-HETE is associated with the pathogenesis of hypertension and may mediate angiotensin II and TGFbeta induced mesangial cell abnormality in diabetic nephropathy. 12-HETE is markedly elevated in the psoriatic lesions. 12-HETE is a vasoconstrictor eicosanoid that contributes to high blood pressure in (renovascular) hypertension and pregnancy-induced hypertension. A significant percentage of patients suffering from a selective increase in plasma LDL cholesterol (type IIa hyperlipoproteinemia) exhibits increased platelet reactivity. This includes enhanced platelet responsiveness against a variety of platelet-stimulating agents ex vivo and enhanced arachidonic acid metabolism associated with increased generation of arachidonic acid metabolites such as 12-HETE, and secretion of platelet-storage products (PMID: 7562532, 12480795, 17361113, 8498970, 1333255, 2119633). 12-HETE is a highly selective ligand used to label mu-opioid receptors in both membranes and tissue sections. The 12-S-HETE analog has been reported to augment tumour cell metastatic potential through activation of protein kinase C. 12-HETE has a diversity of biological actions and is generated by a number of tissues including the renal glomerulus and the vasculature. 12-HETE is one of the six monohydroxy fatty acids produced by the non-enzymatic oxidation of arachidonic acid. 12-HETE is a neuromodulator that is synthesized during ischemia. Its neuronal effects include attenuation of calcium influx and glutamate release as well as inhibition of AMPA receptor (AMPA-R) activation. 12-HETE is found to be associated with peroxisomal biogenesis defect and Zellweger syndrome, which are inborn errors of metabolism.
3-HODE + 9-HODE
13-Hydroxyoctadecadienoic acid (13-HODE) (CAS: 18104-45-5), also known as 13(S)-hydroxy-9Z,11E-octadecadienoic acid or 13(S)-HODE, is the major lipoxygenation product synthesized in the body from linoleic acid. 13-HODE prevents cell adhesion to endothelial cells and can inhibit cancer metastasis. 13-HODE synthesis is enhanced by cyclic AMP. gamma-Linolenic acid, a desaturated metabolite of linoleic acid, causes substantial stimulation of 13-HODE synthesis. A fall in gamma-linolenic acid synthesis with age may be related to the age-related fall in 13-HODE formation (PMID: 9561154). 13-HODE is considered an intermediate in linoleic acid metabolism. It is generated from 13(S)-HPODE via the enzyme lipoxygenase (EC 1.13.11.12). 13-HODE has been shown to be involved in cell proliferation and differentiation in a number of systems. 13-HODE is found to be produced by prostate tumours and cell lines and researchers believe that there is a link between linoleic acid metabolism and the development or progression of prostate cancer (PMID: 9367845).
13-HOTE
13-HOTE is a biologically active lipid molecule produced due to altered intestinal lipid metabolism indicative of Alox15 activity. (PMID: 18258795) [HMDB] 13-HOTE is a biologically active lipid molecule produced due to altered intestinal lipid metabolism indicative of Alox15 activity. (PMID: 18258795).
13-L-Hydroperoxylinoleic acid
(9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate, also known as 13s-hydroperoxy-9z,11e-octadecadienoic acid or 13(S)-hpode, belongs to lineolic acids and derivatives class of compounds. Those are derivatives of lineolic acid. Lineolic acid is a polyunsaturated omega-6 18 carbon long fatty acid, with two CC double bonds at the 9- and 12-positions. Thus, (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate is considered to be an octadecanoid lipid molecule (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate is practically insoluble (in water) and a weakly acidic compound (based on its pKa). (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate can be synthesized from octadeca-9,11-dienoic acid (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate can also be synthesized into pinellic acid and 13(S)-HPODE methyl ester (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate can be found in a number of food items such as lingonberry, lemon thyme, watermelon, and agave, which makes (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate a potential biomarker for the consumption of these food products (9z,11e)-(13s)-13-hydroperoxyoctadeca-9,11-dienoate can be found primarily in blood. 13-L-Hydroperoxylinoleic acid (13(S)-HPODE) is one of the primary products of the major polyunsaturated fatty acids (linoleic acid and arachidonic acid) from the 15-lipoxygenase pathway (EC 1.13.11.31). 13(S)-HPODE is a rather unstable metabolite and is rapidly metabolized to more stable secondary products such as diverse forms of hydroxy fatty acids (via reduction of the hydroperoxy group), alkoxy radicals (via homolytic cleavage of the peroxy group), forms of dihydro(pero)xy fatty acids (via lipoxygenase-catalysed double and triple oxygenation), or epoxy leukotrienes (via a hydrogen abstraction from a doubly allylic methylene group and a homolytic cleavage of the hydroperoxy group) (PMID: 9082450). D009676 - Noxae > D016877 - Oxidants > D010545 - Peroxides
15-KETE
15-OxoETE or 15-KETE is a keto-containing leukotriene derivative produced by oxidation of the 15-hydroxyl of 15-HETE. [HMDB] 15-OxoETE or 15-KETE is a keto-containing leukotriene derivative produced by oxidation of the 15-hydroxyl of 15-HETE.
5-HETE
5-Hydroxyeicosatetraenoic acid (5-HETE) is an endogenous eicosanoid. 5-HETE is an intermediate in the pathway of leukotriene synthesis. In addition, it is a modulator of tubuloglomerular feedback.; 5-hydroxyeicosatetraenoic acid (5-HETE) is an endogenous eicosanoid. 5-HETE is an intermediate in Arachidonic acid metabolism. It is converted from 5(S)-HPETE via the enzyme glutathione peroxidase (EC 1.11.1.9)and then it is converted to 5-OxoETE. It is also involved in the pathway of leukotriene synthesis. In addition, it is a modulator of tubuloglomerular feedback. 5-HETE is found in corn. 5-hydroxyeicosatetraenoic acid (5-HETE) is an endogenous eicosanoid. 5-HETE is an intermediate in arachidonic acid metabolism. It is converted from 5(S)-HPETE via the enzyme glutathione peroxidase (EC 1.11.1.9)and then converted to 5-OxoETE. It is also involved in the pathway of leukotriene synthesis. In addition, it is a modulator of tubuloglomerular feedback.
Leukotriene B4
A leukotriene composed of (6Z,8E,10E,14Z)-icosatetraenoic acid having (5S)- and (12R)-hydroxy substituents. It is a lipid mediator of inflammation that is generated from arachidonic acid via the 5-lipoxygenase pathway. Chemical was purchased from CAY20110 (Lot 0439924-0).; Diagnostic ions: 335.1, 317.2, 195.1, 129.0, 115.0, 111.5
Leukotriene C4
Leukotriene C4 (LTC4) is a cysteinyl leukotriene (CysLT), a family of potent inflammatory mediators. Eosinophils, one of the principal cell types recruited to and activated at sites of allergic inflammation, is capable of elaborating lipid mediators, including leukotrienes derived from the oxidative metabolism of arachidonic acid (AA). Potentially activated eosinophils may elaborate greater quantities of LTC4, than normal eosinophils. These activated eosinophils thus are primed for enhanced LTC4 generation in response to subsequent stimuli. Some recognized priming stimuli are chemoattractants (e.g. eotaxin, PAF) that may participate in the recruitment of eosinophils to sites of allergic inflammation. The mechanisms by which chemoattractants and other activating cytokines (e.g. interleukin (IL)-5) or extracellular matrix components (e.g. fibronectin) enhance eosinophil eicosanoid formation are pertinent to the functions of these eicosanoids as paracrine mediators of allergic inflammation. Some eosinophil-derived eicosanoids may be active in down-regulating inflammation. It is increasingly likely that eicosanoids synthesized within cells, including eosinophils, may have intracellular (e.g. intracrine) roles in regulating cell functions, in addition to the more recognized activities of eicosanoids as paracrine mediators of inflammation. Acting extracellularly, the cysteinyl leukotrienes (CysLTs) LTC4 and its extracellular derivatives, LTD4 and LTE4 are key paracrine mediators pertinent to asthma and allergic diseases. Based on their receptor-mediated capabilities, they can elicit bronchoconstriction, mucus hypersecretion, bronchial hyperresponsiveness, increased microvascular permeability, and additional eosinophil infiltration. Eosinophils are a major source of CysLTs and have been identified as the principal LTC4 synthase expressing cells in bronchial mucosal biopsies of asthmatic subjects (PMID: 12895596). Leukotrienes are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signalling pathways. Leukotriene c4, also known as ltc4 or 5s,6r-ltc(sub 4), is a member of the class of compounds known as oligopeptides. Oligopeptides are organic compounds containing a sequence of between three and ten alpha-amino acids joined by peptide bonds. Thus, leukotriene c4 is considered to be an eicosanoid lipid molecule. Leukotriene c4 is practically insoluble (in water) and a moderately acidic compound (based on its pKa). Leukotriene c4 can be synthesized from icosa-7,9,11,14-tetraenoic acid. Leukotriene c4 is also a parent compound for other transformation products, including but not limited to, leukotriene C4 methyl ester, 11,12-dihydro-(12R)-hydroxyleukotriene C4, and 11,12-dihydro-12-oxoleukotriene C4. Leukotriene c4 can be found in a number of food items such as gram bean, maitake, caraway, and burbot, which makes leukotriene c4 a potential biomarker for the consumption of these food products. Leukotriene c4 can be found primarily in blood and cerebrospinal fluid (CSF), as well as throughout most human tissues. In humans, leukotriene c4 is involved in several metabolic pathways, some of which include trisalicylate-choline action pathway, antipyrine action pathway, nepafenac action pathway, and fenoprofen action pathway. Leukotriene c4 is also involved in a couple of metabolic disorders, which include leukotriene C4 synthesis deficiency and tiaprofenic acid action pathway. Moreover, leukotriene c4 is found to be associated with eczema. Leukotriene C4 (LTC4) is a leukotriene. LTC4 has been extensively studied in the context of allergy and asthma. In cells of myeloid origin such as mast cells, its biosynthesis is orchestrated by translocation to the nuclear envelope along with co-localization of cytosolic phospholipase A2 (cPLA2), Arachidonate 5-lipoxygenase (5-LO), 5-lipoxygenase-activating protein (FLAP) and LTC4 synthase (LTC4S), which couples glutathione to an LTA4 intermediate.The MRP1 transporter then secretes cytosolic LTC4 and cell surface proteases further metabolize it by sequential cleavage of the γ-glutamyl and glycine residues off its glutathione segment, generating the more stable products LTD4 and LTE4. All three leukotrienes then bind at different affinities to two G-protein coupled receptors: CYSLTR1 and CYSLTR2, triggering pulmonary vasoconstriction and bronchoconstriction .
Leukotriene D4
Leukotriene D4 (LTD4) is a cysteinyl leukotriene. Cysteinyl leukotrienes (CysLTs) are a family of potent inflammatory mediators that appear to contribute to the pathophysiologic features of allergic rhinitis. LTD4 is a pro-inflammatory mediator known to mediate its effects through specific cell-surface receptors belonging to the G-protein-coupled receptor family, namely the high-affinity CysLT1 (cysteinyl leukotriene 1) receptor. LTD4 is present at high levels in many inflammatory conditions, and areas of chronic inflammation have an increased risk for subsequent cancer development. LTD4 is associated with the pathogenesis of several inflammatory disorders, such as asthma and inflammatory bowel disease. Exposure to LTD4 increases survival and proliferation in intestinal epithelial cells. CysLT1 regulator is up-regulated in colon cancer tissue and LTD4 signalling facilitates the survival of cancer cells. LTD4 could reduce apoptosis in non-transformed epithelial cells. LTD4 causes up-regulation of beta-catenin through the CysLT1 receptor, PI3K (phosphoinositide 3-kinase), and GSK-3β (glycogen synthase kinase 3β). LTD4 induces beta-catenin translocation to the nucleus and activation of TCF/LEF family of transcription factors. LTD4 causes accumulation of free beta-catenin in non-transformed intestinal epithelial cells through the CysLT1 receptor, and this accumulation is dependent upon the activation of PI3K as well as GSK-3β inactivation (PMID: 16042577, 12607939). Leukotrienes are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent and are able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis through receptor-mediated G-protein linked signaling pathways. Leukotriene D4 (LTD4) is a cysteinyl leukotriene a family of potent inflammatory mediators. LTD4 is a pro-inflammatory mediator known to mediate its effects through specific cell-surface receptors belonging to the G-protein-coupled receptor family, namely the high-affinity CysLT1 (cysteinyl leukotriene 1) receptor. LTD4 is present at high levels in many inflammatory conditions, and areas of chronic inflammation have an increased risk for subsequent cancer development; LTD4 is associated with the pathogenesis of several inflammatory disorders, such as asthma and inflammatory bowel disease. Exposure to LTD4 increases survival and proliferation in intestinal epithelial cells. CysLT1 regulator is up-regulated in colon cancer tissue and LTD4 signalling facilitates the survival of cancer cells. LTD4 could reduce apoptosis in non-transformed epithelial cells. LTD4 causes up-regulation of b-catenin through the CysLT1 receptor, PI3K (phosphoinositide 3-kinase) and GSK-3b (glycogen synthase kinase 3b). LTD4 induces b-catenin translocation to the nucleus and activation of TCF/LEF family of transcription factors. LTD4 causes accumulation of free b-catenin in non-transformed intestinal epithelial cells through the CysLT1 receptor, and this accumulation is dependent upon the activation of PI3K as well as GSK-3b inactivation. (PMID: 16042577, 12607939)
Lipoxin A4
Lipoxin A4 (LXA4) was first identified in 1984 by Serhan and colleagues as 5-lipoxygenase interaction product of activated leukocytes. Endogenous transcellular biosynthesis of LXA4 occurs via interaction of leukocytes with epithelium, endothelium or platelets. Lipoxins (LXs) or the lipoxygenase interaction products are generated from arachidonic acid via sequential actions of lipoxygenases and subsequent reactions to give specific trihydroxytetraene-containing eicosanoids. These unique structures are formed during cell-cell interactions and appear to act at both temporal and spatially distinct sites from other eicosanoids produced during the course of inflammatory responses and to stimulate natural resolution. Lipoxin A4 (LXA4) and lipoxin B4 (LXB4) are positional isomers that each possesses potent cellular and in vivo actions. These LX structures are conserved across species. The results of numerous studies reviewed in this work now confirm that they are the first recognized eicosanoid chemical mediators that display both potent anti-inflammatory and pro-resolving actions in vivo in disease models that include rabbit, rat, and mouse systems. LXs act at specific GPCRs as agonists to regulate cellular responses of interest in inflammation and resolution. Aspirin has a direct impact in the LX circuit by triggering the biosynthesis of endogenous epimers of LX, termed the aspirin-triggered 15-epi-LX, that share the potent anti-inflammatory actions of LX. (PMID: 16005201, 16613568). Lipoxin A4 (LXA4) was first identified in 1984 by Serhan and colleagues as 5-lipoxygenase interaction product of activated leukocytes. Endogenous transcellular biosynthesis of LXA4 occurs via interaction of leukocytes with epithelium, endothelium or platelets. D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000893 - Anti-Inflammatory Agents D018501 - Antirheumatic Agents
Prostaglandin D2
Prostaglandin D2 (or PGD2) is a prostaglandin that is actively produced in various organs such as the brain, spleen, thymus, bone marrow, uterus, ovary, oviduct, testis, prostate and epididymis, and is involved in many physiological events. PGD2 binds to the prostaglandin D2 receptor (PTGDR) which is a G-protein-coupled receptor. Its activity is mainly mediated by G-S proteins that stimulate adenylate cyclase resulting in an elevation of intracellular cAMP and Ca2+. PGD2 promotes sleep; regulates body temperature, olfactory function, hormone release, and nociception in the central nervous system; prevents platelet aggregation; and induces vasodilation and bronchoconstriction. PGD2 is also released from mast cells as an allergic and inflammatory mediator. Prostaglandin H2 is an unstable intermediate formed from PGG2 by the action of cyclooxygenase (COX) in the arachidonate cascade. In mammalian systems, it is efficiently converted into more stable arachidonate metabolites, such as PGD2, PGE2, PGF2a by the action of three groups of enzymes, PGD synthases (PGDS), PGE synthases and PGF synthases, respectively. PGDS catalyzes the isomerization of PGH2 to PGD2. Two types of PGD2 synthase are known. Lipocalin-type PGD synthase is present in cerebrospinal fluid, seminal plasma and may play an important role in male reproduction. Another PGD synthase, hematopoietic PGD synthase is present in the spleen, fallopian tube, endometrial gland cells, extravillous trophoblasts and villous trophoblasts, and perhaps plays an important role in female reproduction. Recent studies demonstrate that PGD2 is probably involved in multiple aspects of inflammation through its dual receptor systems, DP and CRTH2. (PMID:12148545)Prostaglandins are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signalling pathways. Prostaglandin D2 (or PGD2) is a prostaglandin that is actively produced in various organs such as the brain, spleen, thymus, bone marrow, uterus, ovary, oviduct, testis, prostate and epididymis, and is involved in many physiological events. PGD2 binds to the prostaglandin D2 receptor (PTGDR) which is a G-protein-coupled receptor. Its activity is mainly mediated by G-S proteins that stimulate adenylate cyclase resulting in an elevation of intracellular cAMP and Ca2+. PGD2 promotes sleep; regulates body temperature, olfactory function, hormone release, and nociception in the central nervous system; prevents platelet aggregation; and induces vasodilation and bronchoconstriction. PGD2 is also released from mast cells as an allergic and inflammatory mediator. Chemical was purchased from CAY 12010, (Lot 0436713-1); Diagnostic ions: 351.1, 333.0, 271.3, 233.1, 189.1
Prostaglandin J2
Prostaglandin J2 (PGJ2) is an endogenous product of inflammation in humans. It induces neuronal death and the accumulation of ubiquitinated proteins into distinct aggregates. It may play a role in neurodegenerative disorders inducing a chain of events that culminates in neuronal cell death. An altered expression of enzymes in PGJ2 synthesis may represent a novel pathogenic mechanism in human obesity. The peroxisome proliferator-activated receptor gamma (PPARγ) has a fundamental role in glucose homeostasis and adipocyte differentiation. Besides linoleate, linolenate and arachidonate, the most notable PPAR ligand is 15-deoxy-delta12-14-prostaglandin J2, a natural derivative of prostaglandin D2 and PGJ2. It is therefore plausible that the production of 15d-PGJ2 within adipose tissue may act as an endogenous mediator of adipocyte differentiation. PGJ2 disrupts the cytoskeleton in neuronal cells. This cyclopentenone prostaglandin triggered endoplasmic reticulum (ER) collapse and the redistribution of ER proteins, such as calnexin and catechol-O-methyltransferase, into a large centrosomal aggregate containing ubiquitinated proteins and alpha-synuclein. The PGJ2-dependent cytoskeletal rearrangement paralleled the development of the large centrosomal aggregate. Supporting a mechanism by which, upon PGJ2 treatment, cytoskeleton/ER collapse coincides with the relocation of ER proteins, other potentially neighboring proteins, and ubiquitinated proteins into centrosomal aggregates. Development of these large perinuclear aggregates is associated with disruption of the microtubule/ER network. This aberrant protein deposition, triggered by a product of inflammation, may be common to other compounds that disrupt microtubules and induce protein aggregation, such as MPP+ and rotenone, found to be associated with neurodegeneration. Many neurodegenerative disorders, such as Parkinson disease, exhibit inclusion bodies containing ubiquitinated proteins. Concentrations of PGJ2 in biofluids have not been established, since this prostaglandin is further metabolized into delta12-PGJ2, and 15-deoxy-delta12,14-PGJ2. (PMID: 16737963, 16842938, 16774923)Prostaglandins are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signalling pathways. Prostaglandin J2 (PGJ2) is an endogenous product of inflammation in humans. It induces neuronal death and the accumulation of ubiquitinated proteins into distinct aggregates. It may play a role in neurodegenerative disorders inducing a chain of events that culminates in neuronal cell death. An altered expression of enzymes in PGJ2 synthesis may represent a novel pathogenic mechanism in human obesity. The peroxisome proliferator-activated receptor gamma (PPARγ) has a fundamental role in glucose homeostasis and adipocyte differentiation. Besides linoleate, linolenate and arachidonate, the most notable PPAR ligand is 15-deoxy-delta12-14-prostaglandin J2, a natural derivative of prostaglandin D2 and PGJ2. It is therefore plausible that the production of 15d-PGJ2 within adipose tissue may act as an endogenous mediator of adipocyte differentiation. PGJ2 disrupts the cytoskeleton in neuronal cells. This cyclopentenone prostaglandin triggered endoplasmic reticulum (ER) collapse and the redistribution of ER proteins, such as calnexin and catechol-O-methyltransferase, into a large centrosomal aggregate containing ubiquitinated proteins and alpha-synuclein. The PGJ2-dependent cytoskeletal rearrangement paralleled the development of the large centrosomal aggregate. Supporting a mechanism by which, upon PGJ2 treatment, cytoskeleton/ER collapse coincides with the relocation of ER proteins, other potentially neighboring proteins, and ubiquitinated proteins into centrosomal aggregates. Development of these large perinuclear aggregates is associated with disruption of the microtubule/ER network. This aberrant protein deposition, triggered by a product of inflammation, may be common to other compounds that disrupt microtubules and induce protein aggregation, such as MPP+ and rotenone, found to be associated with neurodegeneration. Many neurodegenerative disorders, such as Parkinson disease, exhibit inclusion bodies containing ubiquitinated proteins. Concentrations of PGJ2 in biofluids have not been established, since this prostaglandin is further metabolized into delta12-PGJ2, and 15-deoxy-delta12,14-PGJ2. (PMID: 16737963, 16842938, 16774923) D000970 - Antineoplastic Agents
Stearidonic acid
Steridonic acid, also known as (6z,9z,12z,15z)-octadecatetraenoic acid or stearidonate, belongs to lineolic acids and derivatives class of compounds. Those are derivatives of lineolic acid. Lineolic acid is a polyunsaturated omega-6 18 carbon long fatty acid, with two CC double bonds at the 9- and 12-positions. Thus, steridonic acid is considered to be a fatty acid lipid molecule. Steridonic acid is practically insoluble (in water) and a weakly acidic compound (based on its pKa). Steridonic acid can be found in borage, which makes steridonic acid a potential biomarker for the consumption of this food product. Steridonic acid can be found primarily in blood and feces. In humans, steridonic acid is involved in the alpha linolenic acid and linoleic acid metabolism. Stearidonic acid is found in dietary plant oils which are metabolized to longer-chain, more unsaturated (n-3) PUFA. These oils appear to possess hypotriglyceridemic properties typically associated with fish oils.(PMID: 15173404). Stearidonic acid may be used as a precursor to increase the EPA content of human lipids and that combinations of gamma-linolenic acid and stearidonic acid eicosapentaenoic acid can be used to manipulate the fatty acid compositions of lipid pools in subtle ways. Such effects may offer new strategies for manipulation of cell composition in order to influence cellular responses and functions in desirable ways. (PMID: 15120716).
Clupanodonic acid
Docosapentaenoic acid (also known as clupanodonic acid) is an essential omega-3 fatty acid (EFA) which is prevalent in fish oils. Docosapentaenoic acid, commonly called DPA, is an intermediary between eicosapentaenoic acid (EPA, 20:5 ω-3) and docosahexaenoic acid (DHA, 22:6 ω-3). Seal oil is a rich source. There are three functions of docosapentaenoic acid. The most important is as part of phospholipids in all animal cellular membranes: a deficiency of docosapentaenoic acid leads to faulty membranes being formed. A second is in the transport and oxidation of cholesterol: clupanodonic acid tends to lower plasma cholesterol. A third function is as a precursor of prostanoids which are only formed from docosapentaenoic acid. Deficiency of this in experimental animals causes lesions mainly attributable to faulty cellular membranes: sudden failure of growth, lesions of skin and kidney and connective tissue, erythrocyte fragility, impaired fertility, uncoupling of oxidation and phosphorylation. In man pure deficiency of docosapentaenoic acid has been studied particularly in persons fed intravenously. A relative deficiency (that is, a low ratio in the body of docosapentaenoic to long-chain saturated fatty acids and isomers of docosapentaenoate) is common on Western diets and plays an important part in the causation of atherosclerosis, coronary thrombosis, multiple sclerosis, the triopathy of diabetes mellitus, hypertension and certain forms of malignant disease. Various factors affect the dietary requirement of docosapentaenoic acid. (PMID: 6469703) [HMDB]. 7Z,10Z,13Z,16Z,19Z-Docosapentaenoic acid is found in many foods, some of which are green zucchini, green bell pepper, green bean, and red bell pepper. Docosapentaenoic acid (22n-3) (also known as clupanodonic acid) is an essential omega-3 fatty acid (EFA) which is prevalent in fish oils. Docosapentaenoic acid, commonly called DPA, is an intermediary between eicosapentaenoic acid (EPA, 20:5 ω-3) and docosahexaenoic acid (DHA, 22:6 ω-3). Seal oil is a rich source of this metabolite. There are three functions of docosapentaenoic acid. Most importantly, it is a component of phospholipids found in all animal cell membranes, and a deficiency of docosapentaenoic acid leads to faulty membranes being formed. Secondly, it is involved in the transport and oxidation of cholesterol, and clupanodonic acid tends to lower plasma cholesterol. A third function is as a precursor of prostanoids which are only formed from docosapentaenoic acid. Deficiency of this in experimental animals causes lesions mainly attributable to faulty cellular membranes. Outcomes include sudden failure of growth, lesions of the skin, kidney, and connective tissue, erythrocyte fragility, impaired fertility, and the uncoupling of oxidation and phosphorylation. In humans, pure deficiency of docosapentaenoic acid has been studied particularly in persons fed intravenously. A relative deficiency (that is, a low ratio in the body of docosapentaenoic to long-chain saturated fatty acids and isomers of docosapentaenoate) is common in Western diets and plays an important part in the causation of atherosclerosis, coronary thrombosis, multiple sclerosis, the triopathy of diabetes mellitus, hypertension, and certain forms of malignant disease. Various factors affect the dietary requirement of docosapentaenoic acid (PMID: 6469703). Docosapentaenoic acid (22n-3) is a component of phospholipids found in all animal cell membranes.
Kaempferide
Kaempferide is a monomethoxyflavone that is the 4-O-methyl derivative of kaempferol. It has a role as an antihypertensive agent and a metabolite. It is a trihydroxyflavone, a monomethoxyflavone and a 7-hydroxyflavonol. It is functionally related to a kaempferol. It is a conjugate acid of a kaempferide(1-). Kaempferide is a natural product found in Ageratina altissima, Chromolaena odorata, and other organisms with data available. Isolated from roots of Alpinia officinarum (lesser galangal). Kaempferide is found in many foods, some of which are herbs and spices, cloves, sour cherry, and european plum. Kaempferide is found in cloves. Kaempferide is isolated from roots of Alpinia officinarum (lesser galangal). A monomethoxyflavone that is the 4-O-methyl derivative of kaempferol. Acquisition and generation of the data is financially supported in part by CREST/JST. Kaempferide is an O-methylated flavonol also found in kaempferol. Kaempferide has antiviral activity. Kaempferide is an orally active flavonol isolated from Hippophae rhamnoides L. Kaempferide has anticancer, anti-inflammatory, antioxidant, antidiabetic, antiobesity, antihypertensive, and neuroprotective activities. Kaempferide induces apoptosis. Kaempferide promotes osteogenesis through antioxidants and can be used in osteoporosis research[1][2][3][4][5][6]. Kaempferide is an O-methylated flavonol also found in kaempferol. Kaempferide has antiviral activity.
Masoprocol
Masoprocol is the meso-form of nordihydroguaiaretic acid. An antioxidant found in the creosote bush, Larrea divaricata, it is a potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. It also inhibits (though to a lesser extent) formyltetrahydrofolate synthetase, carboxylesterase, and cyclooxygenase. It has a role as an antineoplastic agent, a lipoxygenase inhibitor, a hypoglycemic agent and a metabolite. Masoprocol is a natural product found in Larrea divaricata, Schisandra chinensis, and Larrea tridentata with data available. Masoprocol is a naturally occurring antioxidant dicatechol originally derived from the creosote bush Larrea divaricatta with antipromoter, anti-inflammatory, and antineoplastic activities. Masoprocol directly inhibits activation of two receptor tyrosine kinases (RTKs), the insulin-like growth factor receptor (IGF-1R) and the c-erbB2/HER2/neu receptor, resulting in decreased proliferation of susceptible tumor cell populations. This agent may induce apoptosis in susceptible tumor cell populations as a result of disruption of the actin cytoskeleton in association with the activation of stress activated protein kinases (SAPKs). In addition, masoprocol inhibits arachidonic acid 5-lipoxygenase (5LOX), resulting in diminished synthesis of inflammatory mediators such as prostaglandins and leukotrienes. It may prevent leukocyte infiltration into tissues and the release of reactive oxygen species. A potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. The compound also inhibits formyltetrahydrofolate synthetase, carboxylesterase, and cyclooxygenase to a lesser extent. It also serves as an antioxidant in fats and oils. A potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. The compound also inhibits formyltetrahydrofolate synthetase, carboxylesterase, and cyclooxygenase to a lesser extent. It also serves as an antioxidant in fats and oils. Masoprocol, also known as actinex or meso-ndga, belongs to the class of organic compounds known as dibenzylbutane lignans. These are lignan compounds containing a 2,3-dibenzylbutane moiety. Symptoms of overdose or allergic reaction include bluish coloration of skin, dizziness, or feeling faint, wheezing or trouble in breathing. Masoprocol also inhibits prostaglandins but the significance of this action is not yet known. Masoprocol is a drug which is used for the treatment of actinic keratoses (precancerous skin growths that can become malignant if left untreated). It also serves as an antioxidant in fats and oils. Masoprocol is a potentially toxic compound. It is not known exactly how masoprocol works. Although the exact mechanism of action is not known, studies have shown that masoprocol is a potent 5-lipoxygenase inhibitor and has antiproliferative activity against keratinocytes in tissue culture, but the relationship between this activity and its effectiveness in actinic keratoses is unknown. A potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. The meso-form of nordihydroguaiaretic acid. An antioxidant found in the creosote bush, Larrea divaricata, it is a potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. It also inhibits (though to a lesser extent) formyltetrahydrofolate synthetase, carboxylesterase, and cyclooxygenase. D018501 - Antirheumatic Agents > D000894 - Anti-Inflammatory Agents, Non-Steroidal > D016861 - Cyclooxygenase Inhibitors D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents L - Antineoplastic and immunomodulating agents > L01 - Antineoplastic agents D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors D002491 - Central Nervous System Agents > D000700 - Analgesics C471 - Enzyme Inhibitor > C1322 - Lipooxygenase Inhibitor D020011 - Protective Agents > D000975 - Antioxidants C26170 - Protective Agent > C275 - Antioxidant D000893 - Anti-Inflammatory Agents CONFIDENCE standard compound; INTERNAL_ID 611; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4658; ORIGINAL_PRECURSOR_SCAN_NO 4657 CONFIDENCE standard compound; INTERNAL_ID 611; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4580; ORIGINAL_PRECURSOR_SCAN_NO 4576 CONFIDENCE standard compound; INTERNAL_ID 611; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4551; ORIGINAL_PRECURSOR_SCAN_NO 4548 CONFIDENCE standard compound; INTERNAL_ID 611; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4643; ORIGINAL_PRECURSOR_SCAN_NO 4642 CONFIDENCE standard compound; INTERNAL_ID 611; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4651; ORIGINAL_PRECURSOR_SCAN_NO 4650 CONFIDENCE standard compound; INTERNAL_ID 611; DATASET 20200303_ENTACT_RP_MIX506; DATA_PROCESSING MERGING RMBmix ver. 0.2.7; DATA_PROCESSING PRESCREENING Shinyscreen ver. 0.8.0; ORIGINAL_ACQUISITION_NO 4591; ORIGINAL_PRECURSOR_SCAN_NO 4587 Masoprocol (meso-Nordihydroguaiaretic acid) is a potent and orally active lipoxygenase inhibitor. Masoprocol shows antihyperglycemic activity. Masoprocol decreases the glucose concentration and hepatic triglyceride in vivo. Masoprocol has the potential for the research of type II diabetes[1][2][3]. Masoprocol (meso-Nordihydroguaiaretic acid) is a potent and orally active lipoxygenase inhibitor. Masoprocol shows antihyperglycemic activity. Masoprocol decreases the glucose concentration and hepatic triglyceride in vivo. Masoprocol has the potential for the research of type II diabetes[1][2][3]. Masoprocol (meso-Nordihydroguaiaretic acid) is a potent and orally active lipoxygenase inhibitor. Masoprocol shows antihyperglycemic activity. Masoprocol decreases the glucose concentration and hepatic triglyceride in vivo. Masoprocol has the potential for the research of type II diabetes[1][2][3]. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor.
Noroxylin
D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists > D011448 - Prostaglandin Antagonists D020011 - Protective Agents > D000975 - Antioxidants COVID info from PDB, Protein Data Bank D004791 - Enzyme Inhibitors Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Baicalein (5,6,7-Trihydroxyflavone) is a xanthine oxidase inhibitor with an IC50 value of 3.12 μM. Baicalein (5,6,7-Trihydroxyflavone) is a xanthine oxidase inhibitor with an IC50 value of 3.12 μM.
Resolvin D1
Resolvin D1 (RvD1) is an autacoid resolvin. Autacoids are chemical mediators including the families of resolvins and protectins, defined by their potent bioactions and novel chemical structures. The bioactive local mediators, or autacoids, that require enzymatic generation from the omega-3 essential fatty acid EPA were first identified in resolving inflammatory exudates in vivo and carry potent stereoselective biological actions. Resolvins of the E (RvE) series are derived from eicosapentaenoic acid (EPA). Those derived from docosahexaenoic acid (DHA) were termed resolvins of the D series, for example resolvin D1 (RvD1).Resolvins and protectins have specific stereoselective actions which evoke biological actions in the nanogram range in vivo and are natural exudate products. Resolvins and protectins as distinct chemical families join the lipoxins as potent agonists of endogenous anti-inflammation and are proresolving chemical mediators of interest in human disease as potential new approaches to treatment. The term resolvins (resolution-phase interaction products) was first introduced to signify that these new structures were endogenous mediators, biosynthesized in the resolution phase of inflammatory exudates, possessing very potent anti-inflammatory and immunoregulatory actions. These actions include reducing neutrophil traffic, regulating cytokine and reactive oxygen species, and lowering the magnitude of the response. In recent years, investigators have recognized inflammation as playing a key role in many prevalent diseases not previously considered to be of inflammatory etiology. These include Alzheimers disease, cardiovascular disease, and cancer, which now join those well-appreciated inflammatory disorders such as arthritis and periodontal disease. Identifying the molecular mechanism(s) that underlie the many reports of the benefits of dietary omega-3 PUFAs remains an important challenge for nutrition and medicine. Thus, that these new mediator families, resolvins and protectins, are biosynthesized from EPA and DHA, act locally, and possess potent, novel bioactions is of interest to researchers. (PMID: 17090225).
7-Ketodeoxycholic acid
7-Ketodeoxycholic acid is a bile acid. 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). 7-Ketodeoxycholic acid is a bile acid. Bile acids are steroid acids found predominantly in bile of mammals. The distinction between different bile acids is minute, depends only on presence or absence of hydroxyl groups on positions 3, 7, and 12. D005765 - Gastrointestinal Agents > D001647 - Bile Acids and Salts D005765 - Gastrointestinal Agents > D002793 - Cholic Acids 7-keto-lithocholic acid is a metabolite of bile acids in Clostridium absonum. 7-keto-lithocholic acid is also converted from Lactobacillus and Bifidobacterium with specific condition[1][2].
5(S)-Hydroperoxyeicosatetraenoic acid
5(S)-Hydroperoxyeicosatetraenoic acid is a lipid hydroperoxide precursor of leukotrienes. The first step of biosynthesis of leukotrienes is conversion of arachidonic acid into 5(S)-hydroperoxy-6,8,11,14-(E,Z,Z,Z)-eicosatetraenoic acid [5(S)-HpETE] by 5- lipoxygenases (5-LOX). Lipid hydroperoxides undergo homolytic decomposition into bifunctional electrophiles, which react with DNA bases to form DNA adducts. These DNA modifications are proposed to be involved in the etiology of cancer, cardiovascular disease, and neurodegeneration. 5-LOX, the enzyme responsible for the formation of 5(S)-HpETE in vivo, is expressed primarily in leukocytes, including monocytes and macrophages. Studies have implicated the 5-LOX pathway as an important mediator in the pathology of atherosclerosis. (PMID: 15777099). Endogenously generated 5-hydroperoxyeicosatetraenoic acid is the preferred substrate for human leukocyte leukotriene A4 synthase activity. Thus, the arachidonic acid moiety is preferentially converted to LTA4 in a concerted reaction without dissociation of a 5-HPETE intermediate. (PMID: 3036580). 5(S)-Hydroperoxyeicosatetraenoic acid is a lipid hydroperoxide precursor of leukotrienes. The first step of biosynthesis of leukotrienes is conversion of arachidonic acid into 5(S)-hydroperoxy-6,8,11,14-(E,Z,Z,Z)-eicosatetraenoic acid [5(S)-HpETE] by 5- lipoxygenases (5-LOX). Lipid hydroperoxides undergo homolytic decomposition into bifunctional electrophiles, which react with DNA bases to form DNA adducts. These DNA modifications are proposed to be involved in the etiology of cancer, cardiovascular disease, and neurodegeneration.
14,15-Epoxy-5,8,11-eicosatrienoic acid
14,15-epoxy-5,8,11-eicosatrienoic acid is an epoxyeicosatrienoic acid (EET), a metabolite of arachidonic acid. The P450 eicosanoids epoxyeicosatrienoic acids (EETs) are endogenous lipid mediators produced by P450 epoxygenases and metabolized through multiple pathways including soluble epoxide hydrolase (sEH). The cytochrome P-450 (P450) monooxygenase pathway includes enzymes of the CYP1A, CYP2B, CYP2C, CYP2E, and CYP2J subfamilies that catalyze the formation of four regioisomeric products, 5,6-, 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid. EETs are produced in brain and perform important biological functions, including protection from ischemic injury. Both light flashes and direct glial stimulation produce vasodilatation mediated by EETs. EETs may be involved in the development of hypertension and endothelial dysfunction in DOCA-salt rats, but not in excessive collagen deposition or electrophysiological abnormalities. EETs have vasodilator and natriuretic effect. Blockade of EET formation is associated with salt-sensitive hypertension. Four regioisomeric cis-EET are primary products of arachidonic acid metabolism by cytochrome P450 epoxygenases. Upon hydration by soluble epoxide hydrolase (sEH), EET are metabolized to dihydroxyeicosatrienoic acids (DHET). These hydration products are more stable and less biologically active than EETs. (PMID: 17494091, 17468203, 17434916, 17406062, 17361113, 15581597). 14,15-epoxy-5,8,11-eicosatrienoic acid is an epoxyeicosatrienoic acid (EET), a metabolite of arachidonic acid. D002317 - Cardiovascular Agents > D014665 - Vasodilator Agents
Prostaglandin B2
Prostaglandin B2 (PGB2) is a prostanoid. Prostanoids is a term that collectively describes prostaglandins, prostacyclines and thromboxanes. Prostanoids are a subclass of the lipid mediator group known as eicosanoids. They derive from C-20 polyunsaturated fatty acids, mainly dihomo-gamma-linoleic (20:3n-6), arachidonic (20:4n-6), and eicosapentaenoic (20:5n-3) acids, through the action of cyclooxygenases-1 and -2 (COX-1 and COX-2). The reaction product of COX is the unstable endoperoxide prostaglandin H (PGH) that is further transformed into the individual prostanoids by a series of specific prostanoid synthases. Prostanoids are local-acting mediators formed and inactivated within the same or neighbouring cells prior to their release into circulation as inactive metabolites (15-keto- and 13,14-dihydroketo metabolites). Non-enzymatic peroxidation of arachidonic acid and other fatty acids in vivo can result in prostaglandin-like substances isomeric to the COX-derived prostaglandins that are termed isoprostanes. Prostanoids take part in many physiological and pathophysiological processes in practically every organ, tissue and cell, including the vascular, renal, gastrointestinal and reproductive systems. Their activities are mediated through prostanoid-specific receptors and intracellular signalling pathways, whilst their biosynthesis and action are blocked by nonsteroidal antiinflammatory drugs (NSAID). Isoprostanes are considered to be reliable markers of oxidant stress status and have been linked to inflammation, ischaemia-reperfusion, diabetes, cardiovascular disease, reproductive disorders and diabetes. (PMID: 16986207). Prostaglandins are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signalling pathways. Prostaglandin B2 (PGB2) is a prostanoid. Prostanoids is a term that collectively describes prostaglandins, prostacyclines and thromboxanes. Prostanoids are a subclass of the lipid mediator group known as eicosanoids. They derive from C-20 polyunsaturated fatty acids, mainly dihomo-gamma-linoleic (20:3n-6), arachidonic (20:4n-6), and eicosapentaenoic (20:5n-3) acids, through the action of cyclooxygenases-1 and -2 (COX-1 and COX-2). The reaction product of COX is the unstable endoperoxide prostaglandin H (PGH) that is further transformed into the individual prostanoids by a series of specific prostanoid synthases. Prostanoids are local-acting mediators formed and inactivated within the same or neighbouring cells prior to their release into circulation as inactive metabolites (15-keto- and 13,14-dihydroketo metabolites). Non-enzymatic peroxidation of arachidonic acid and other fatty acids in vivo can result in prostaglandin-like substances isomeric to the COX-derived prostaglandins that are termed isoprostanes. Prostanoids take part in many physiological and pathophysiological processes in practically every organ, tissue and cell, including the vascular, renal, gastrointestinal and reproductive systems. Their activities are mediated through prostanoid-specific receptors and intracellular signalling pathways, whilst their biosynthesis and action are blocked by nonsteroidal antiinflammatory drugs (NSAID). Isoprostanes are considered to be reliable markers of oxidant stress status and have been linked to inflammation, ischaemia-reperfusion, diabetes, cardiovascular disease, reproductive disorders and diabetes. (PMID: 16986207)
5,6-Epoxy-8,11,14-eicosatrienoic acid
5,6-Epoxy-8,11,14-eicosatrienoic acid is an Epoxyeicosatrienoic acid (EET), a metabolite of arachidonic acid. The epoxyeicosatrienoic acids (EETs) are endogenous lipid mediators produced by P450 epoxygenases and metabolized through multiple pathways including soluble epoxide hydrolase (sEH). The cytochrome P-450 (P450) monooxygenase pathway includes enzymes of the CYP1A, CYP2B, CYP2C, CYP2E, and CYP2J subfamilies that catalyze the formation of four regioisomeric products, 5,6-, 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid. EETs are produced in brain and perform important biological functions, including protection from ischemic injury. Both light flashes and direct glial stimulation produce vasodilatation mediated by EETs. EETs may be involved in the development of hypertension and endothelial dysfunction in DOCA-salt rats, but not in excessive collagen deposition or electrophysiological abnormalities. EETs have vasodilator and natriuretic effect. Blockade of EET formation is associated with salt-sensitive hypertension. (PMID: 17494091, 17468203, 17434916, 17406062, 17361113) [HMDB] 5,6-Epoxy-8,11,14-eicosatrienoic acid is an Epoxyeicosatrienoic acid (EET), a metabolite of arachidonic acid. The epoxyeicosatrienoic acids (EETs) are endogenous lipid mediators produced by P450 epoxygenases and metabolized through multiple pathways including soluble epoxide hydrolase (sEH). The cytochrome P-450 (P450) monooxygenase pathway includes enzymes of the CYP1A, CYP2B, CYP2C, CYP2E, and CYP2J subfamilies that catalyze the formation of four regioisomeric products, 5,6-, 8,9-, 11,12-, and 14,15-epoxyeicosatrienoic acid. EETs are produced in brain and perform important biological functions, including protection from ischemic injury. Both light flashes and direct glial stimulation produce vasodilatation mediated by EETs. EETs may be involved in the development of hypertension and endothelial dysfunction in DOCA-salt rats, but not in excessive collagen deposition or electrophysiological abnormalities. EETs have vasodilator and natriuretic effect. Blockade of EET formation is associated with salt-sensitive hypertension. (PMID: 17494091, 17468203, 17434916, 17406062, 17361113).
12-HHTrE
12(S)-HHTrE is an unusual product of the cyclooxygenase (COX) pathway and one of the primary arachidonic acid metabolites of the human platelet.1 It is biosynthesized by thromboxane (TX) synthesis from prostaglandin H2 (PGH2) concurrently with TXA2. The biological role of 12(S)-HHTrE is uncertain. It is avidly oxidized to 12-oxoHTrE by porcine 15-hydroxy PGDH. [HMDB] 12(S)-HHTrE is an unusual product of the cyclooxygenase (COX) pathway and one of the primary arachidonic acid metabolites of the human platelet.1 It is biosynthesized by thromboxane (TX) synthesis from prostaglandin H2 (PGH2) concurrently with TXA2. The biological role of 12(S)-HHTrE is uncertain. It is avidly oxidized to 12-oxoHTrE by porcine 15-hydroxy PGDH.
8,9-DiHETrE
8,9-DiHETrE is a Cytochrome P450 (P450) eicosanoid. Eicosanoids generated from arachidonic acid (AA) metabolism by cytochrome P450 (P450) enzymes are important autocrine and paracrine factors that have diverse biological functions. P450 eicosanoids are involved in the regulation of vascular tone, renal tubular transport, cardiac contractility, cellular proliferation, and inflammation. P450converts AA to 8,9- dihydroxyeicosatrienoic acid. This enzymatic pathway was first described in liver; however, it is now clear that AA can be metabolized by P450 in many tissues including the pituitary gland, eye, kidney, adrenal gland, and blood vessels. (PMID: 17431031, 11700990) [HMDB] 8,9-DiHETrE is a Cytochrome P450 (P450) eicosanoid. Eicosanoids generated from arachidonic acid (AA) metabolism by cytochrome P450 (P450) enzymes are important autocrine and paracrine factors that have diverse biological functions. P450 eicosanoids are involved in the regulation of vascular tone, renal tubular transport, cardiac contractility, cellular proliferation, and inflammation. P450converts AA to 8,9- dihydroxyeicosatrienoic acid. This enzymatic pathway was first described in liver; however, it is now clear that AA can be metabolized by P450 in many tissues including the pituitary gland, eye, kidney, adrenal gland, and blood vessels. (PMID: 17431031, 11700990).
Resolvin D2
Resolvin D2 is an autacoid resolvin. Autacoids are chemical mediators including the families of resolvins and protectins, defined by their potent bioactions and novel chemical structures. The bioactive local mediators, or autacoids, that require enzymatic generation from the omega-3 essential fatty acid EPA were first identified in resolving inflammatory exudates in vivo and carry potent stereoselective biological actions. Resolvins of the E (RvE) series are derived from eicosapentaenoic acid (EPA). Those derived from docosahexaenoic acid (DHA) were termed resolvins of the D series, for example resolvin D1 (RvD1).Resolvins and protectins have specific stereoselective actions which evoke biological actions in the nanogram range in vivo and are natural exudate products. Resolvins and protectins as distinct chemical families join the lipoxins as potent agonists of endogenous anti-inflammation and are proresolving chemical mediators of interest in human disease as potential new approaches to treatment. The term resolvins (resolution-phase interaction products) was first introduced to signify that these new structures were endogenous mediators, biosynthesized in the resolution phase of inflammatory exudates, possessing very potent anti-inflammatory and immunoregulatory actions. These actions include reducing neutrophil traffic, regulating cytokine and reactive oxygen species, and lowering the magnitude of the response. In recent years, investigators have recognized inflammation as playing a key role in many prevalent diseases not previously considered to be of inflammatory etiology. These include Alzheimers disease, cardiovascular disease, and cancer, which now join those well-appreciated inflammatory disorders such as arthritis and periodontal disease. Identifying the molecular mechanism(s) that underlie the many reports of the benefits of dietary omega-3 PUFAs remains an important challenge for nutrition and medicine. Thus, that these new mediator families, resolvins and protectins, are biosynthesized from EPA and DHA, act locally, and possess potent, novel bioactions is of interest to researchers. (PMID: 17090225) [HMDB] Resolvin D2 is an autacoid resolvin. Autacoids are chemical mediators including the families of resolvins and protectins, defined by their potent bioactions and novel chemical structures. The bioactive local mediators, or autacoids, that require enzymatic generation from the omega-3 essential fatty acid EPA were first identified in resolving inflammatory exudates in vivo and carry potent stereoselective biological actions. Resolvins of the E (RvE) series are derived from eicosapentaenoic acid (EPA). Those derived from docosahexaenoic acid (DHA) were termed resolvins of the D series, for example resolvin D1 (RvD1).Resolvins and protectins have specific stereoselective actions which evoke biological actions in the nanogram range in vivo and are natural exudate products. Resolvins and protectins as distinct chemical families join the lipoxins as potent agonists of endogenous anti-inflammation and are proresolving chemical mediators of interest in human disease as potential new approaches to treatment. The term resolvins (resolution-phase interaction products) was first introduced to signify that these new structures were endogenous mediators, biosynthesized in the resolution phase of inflammatory exudates, possessing very potent anti-inflammatory and immunoregulatory actions. These actions include reducing neutrophil traffic, regulating cytokine and reactive oxygen species, and lowering the magnitude of the response. In recent years, investigators have recognized inflammation as playing a key role in many prevalent diseases not previously considered to be of inflammatory etiology. These include Alzheimers disease, cardiovascular disease, and cancer, which now join those well-appreciated inflammatory disorders such as arthritis and periodontal disease. Identifying the molecular mechanism(s) that underlie the many reports of the benefits of dietary omega-3 PUFAs remains an important challenge for nutrition and medicine. Thus, that these new mediator families, resolvins and protectins, are biosynthesized from EPA and DHA, act locally, and possess potent, novel bioactions is of interest to researchers. (PMID: 17090225).
Norathyriol
A polyphenol metabolite detected in biological fluids [PhenolExplorer]
Leukotriene A4
Leukotriene A4 (LTA4) is the first metabolite in the series of reactions leading to the synthesis of all leukotrienes. 5-Lipoxygenase (5-LO) catalyzes the two-step conversion of arachidonic acid to LTA4.The first step consists of the oxidation of arachidonic acid to the unstable intermediate 5-hydroperoxyeicosatetraenoic acid (5-HPETE), and the second step is the dehydration of 5-HPETE to form LTA4. Leukotriene A4, an unstable epoxide, is hydrolyzed to leukotriene B4 or conjugated with glutathione to yield leukotriene C4 and its metabolites, leukotriene D4 and leukotriene E4. The leukotrienes participate in host defense reactions and pathophysiological conditions such as immediate hypersensitivity and inflammation. Recent studies also suggest a neuroendocrine role for leukotriene C4 in luteinizing hormone secretion. (PMID: 10591081, 2820055). Leukotrienes are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signalling pathways. Leukotriene A4 (LTA4) is the first metabolite in the series of reactions leading to the synthesis of all leukotrienes. 5-Lipoxygenase (5-LO) catalyzes the two-step conversion of arachidonic acid to LTA4.The first step consists of the oxidation of arachidonic acid to the unstable intermediate 5-hydroperoxyeicosatetraenoic acid (5-HPETE), and the second step is the dehydration of 5-HPETE to form LTA4. Leukotriene A4, an unstable epoxide, is hydrolyzed to leukotriene B4 or conjugated with glutathione to yield leukotriene C4 and its metabolites, leukotriene D4 and leukotriene E4. The leukotrienes participate in host defense reactions and pathophysiological conditions such as immediate hypersensitivity and inflammation. Recent studies also suggest a neuroendocrine role for leukotriene C4 in luteinizing hormone secretion. (PMID: 10591081, 2820055)
Lathosterol
Lathosterol is a a sterol (a combination steroid and alcohol) and a lipid found in the cell membranes of all body tissues, and transported in the blood plasma of all animals. It is used as an indicator of whole-body cholesterol synthesis (PMID 14511438). Plasma lathosterol levels are significantly elevated in patients with bile acid malabsorption (PMID: 8777839). Lathosterol oxidase (EC 1.14.21.6) is an enzyme that catalyzes the chemical reaction 5alpha-cholest-7-en-3beta-ol + NAD(P)H + H+ + O2 cholesta-5,7-dien-3beta-ol + NAD(P)+ + 2 H2O [HMDB] Lathosterol is a a sterol (a combination steroid and alcohol) and a lipid found in the cell membranes of all body tissues, and transported in the blood plasma of all animals. It is used as an indicator of whole-body cholesterol synthesis (PMID 14511438). Plasma lathosterol levels are significantly elevated in patients with bile acid malabsorption (PMID:8777839). Lathosterol oxidase (EC 1.14.21.6) is an enzyme that catalyzes the chemical reaction 5alpha-cholest-7-en-3beta-ol + NAD(P)H + H+ + O2 cholesta-5,7-dien-3beta-ol + NAD(P)+ + 2 H2O. Lathosterol is a cholesterol-like molecule. Serum Lathosterol concentration is an indicator of whole-body cholesterol synthesis. Lathosterol is a cholesterol-like molecule. Serum Lathosterol concentration is an indicator of whole-body cholesterol synthesis.
Docebenone
D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors C471 - Enzyme Inhibitor > C1322 - Lipooxygenase Inhibitor Docebenone (AA 861) is a potent, selective and orally active 5-LO (5-lipoxygenase) inhibitor.
Decyl alcohol
1-Decanol, or decyl alcohol, is a straight chain fatty alcohol with ten carbon atoms and the molecular formula CH3(CH2)9OH. It is a colorless viscous liquid that is insoluble in water. 1-Decanol has a strong odour. Decanol is used in the manufacture of plasticizers, lubricants, surfactants and solvents. Decanol causes a high irritability to skin and eyes, when splashed into the eyes it can cause permanent damage. Also inhalation and ingestion can be harmful, it can also function as a narcotic. It is also harmful to the environment. Isolated from plant sources, e.g. citrus oils, apple, coriander, babaco fruit (Carica pentagonia), wines, scallop and other foods
Desmosterol
Desmosterol is an intermediate in the synthesis of cholesterol. Desmosterolosis is a rare autosomal recessive inborn errors of cholesterol synthesis that is caused by defective activity of desmosterol reductase which results in an accumulation of demosterol (DHCR24, EC 1.3.1.72), combines a severe osteosclerotic skeletal dysplasia and includes 2-3 toe syndactyly with Smith-Lemli-Opitz syndrome (SLOS; the biochemical block in SLOS results in decreased cholesterol levels and increased 7-dehydrocholesterol levels). Desmosterolosis is caused by mutation of the 24-dehydrocholesterol reductase gene (DHCR24). Many of the malformations in SLOS and desmosterolosis are consistent with impaired hedgehog function. The hedgehog proteins include Sonic hedgehog (SHH), which plays a major role in midline patterning and limb development. Desmosterolosis, caused by defective activity of desmosterol reductase, combines a severe osteosclerotic skeletal dysplasia. 7-dehydrocholesterol reductase (DHCR7, EC 1.3.1.21) reduces the C7-C8 double bond in the sterol B ring to form cholesterol or desmosterol depending upon the precursor. Desmosterol can be converted to cholesterol by DHCR24. Therefore, SLOS and Desmosterolosis patients invariably have elevated levels of cholesterol precursors 7-dehydrocholesterol (and its spontaneous isomer 8-dehydrocholesterol) and absent desmosterol. (PMID: 14631207, 16207203). Desmosterol is found in many foods, some of which are fig, sago palm, mexican groundcherry, and pepper (c. frutescens). Desmosterol is an intermediate in the synthesis of cholesterol. Desmosterolosis is a rare autosomal recessive inborn errors of cholesterol synthesis that is caused by defective activity of desmosterol reductase which results in an accumulation of demosterol (DHCR24, EC 1.3.1.72), combines a severe osteosclerotic skeletal dysplasia and includes 2-3 toe syndactyly with Smith-Lemli-Opitz syndrome (SLOS; the biochemical block in SLOS results in decreased cholesterol levels and increased 7-dehydrocholesterol levels). Desmosterolosis is caused by mutation of the 24-dehydrocholesterol reductase gene (DHCR24). Many of the malformations in SLOS and desmosterolosis are consistent with impaired hedgehog function. The hedgehog proteins include Sonic hedgehog (SHH), which plays a major role in midline patterning and limb development. Desmosterolosis, caused by defective activity of desmosterol reductase, combines a severe osteosclerotic skeletal dysplasia. 7-dehydrocholesterol reductase (DHCR7, EC 1.3.1.21) reduces the C7-C8 double bond in the sterol B ring to form cholesterol or desmosterol depending upon the precursor. Desmosterol can be converted to cholesterol by DHCR24. Therefore, SLOS and Desmosterolosis patients invariably have elevated levels of cholesterol precursors 7-dehydrocholesterol (and its spontaneous isomer 8-dehydrocholesterol) and absent desmosterol. (PMID: 14631207, 16207203). Desmosterol is a molecule similar to cholesterol. Desmosterol is the immediate precursor of cholesterol in the Bloch pathway of cholesterol biosynthesis. Desmosterol, as an endogenous metabolite, used to study cholesterol metabolism[1]. Desmosterol is a molecule similar to cholesterol. Desmosterol is the immediate precursor of cholesterol in the Bloch pathway of cholesterol biosynthesis. Desmosterol, as an endogenous metabolite, used to study cholesterol metabolism[1].
(5Z,9E,14Z)-(8xi,11R,12S)-11,12-epoxy-8-hydroxyicosa-5,9,14-trienoic Acid
(5Z,9E,14Z)-(8xi,11R,12S)-11,12-epoxy-8-hydroxyicosa-5,9,14-trienoic Acid, also known as Hepoxilin a3 or 8-EH-2, is classified as a member of the Hepoxilins. Hepoxilins are eicosanoids containing an oxirane group attached to the fatty acyl chain. (5Z,9E,14Z)-(8xi,11R,12S)-11,12-epoxy-8-hydroxyicosa-5,9,14-trienoic Acid is considered to be practically insoluble (in water) and acidic
Leukotriene E4
Leukotriene E4 (LTE4) is a cysteinyl leukotriene. Cysteinyl leukotrienes (CysLTs) are a family of potent inflammatory mediators that appear to contribute to the pathophysiologic features of allergic rhinitis. Nasal blockage induced by CysLTs is mainly due to dilatation of nasal blood vessels, which can be induced by the nitric oxide produced through CysLT1 receptor activation. LTE4 activates contractile and inflammatory processes via specific interaction with putative seven transmembrane-spanning receptors that couple to G proteins and subsequent intracellular signaling pathways. LTE4 is metabolized from leukotriene C4 in a reaction catalyzed by gamma-glutamyl transpeptidase and a particulate dipeptidase from kidney (PMID: 12607939, 12432945, 6311078). Leukotrienes are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent and are able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis through receptor-mediated G-protein linked signaling pathways. Leukotriene E4 (LTE4) is a cysteinyl leukotriene. Cysteinyl leukotrienes (CysLTs) are a family of potent inflammatory mediators that appear to contribute to the pathophysiologic features of allergic rhinitis. Nasal blockage induced by CysLTs is mainly due to dilatation of nasal blood vessels, which can be induced by the nitric oxide produced through CysLT1 receptor activation. LTE4, activate contractile and inflammatory processes via specific interaction with putative seven transmembrane-spanning receptors that couple to G proteins and subsequent intracellular signaling pathways. LTE4 is metabolized from leukotriene C4 in a reaction catalyzed by gamma-glutamyl transpeptidase and a particulate dipeptidase from kidney. (PMID: 12607939, 12432945, 6311078)
15(S)-HPETE
15(S)-hydroperoxyeicosatetraenoic acid (15(S)-HPETE) is the corresponding hydroperoxide of 15(S)-HETE and undergoes homolytic decomposition to the DNA-reactive bifunctional electrophile 4-oxo-2(E)-nonenal, a precursor of heptanone-etheno-2-deoxyguanosine. Reactive oxygen species convert the omega-6 polyunsaturated fatty acid arachidonic acid into (15-HPETE); vitamin C mediates 15(S)-HPETE decomposition. 15(S)-HPETE initiates apoptosis in vascular smooth muscle cells. 15(S)-HPETE is a lipoxygenase metabolite that affects the expression of cell adhesion molecules (CAMs) involved in the adhesion of leukocytes and/or the accumulation of leukocytes in the vascular endothelium, these being the initial events in endothelial cell injury. 15(S)-HPETE induces a loss of cardiomyocytes membrane integrity. 15-(S)HPETE is a hydroperoxide that enhances the activity of the enzymes lipoxygenase [EC 1.13.11.12] and Na+, K+-ATPase [EC 3.6.3.9] of brain microvessels. Lipoxygenase(s) and Na+-K+-ATPase of brain microvessels may play a significant role in the occurrence of ischemic brain edema. (PMID: 15964853, 15723435, 8655602, 8595608, 2662983). D002317 - Cardiovascular Agents > D014662 - Vasoconstrictor Agents D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors D009676 - Noxae > D016877 - Oxidants > D010545 - Peroxides
Lipoxin B4
Lipoxins (LXs) and aspirin-triggered lipoxin (ATL) are trihydroxytetraene-containing eicosanoids generated from arachidonic acid that are distinct in structure, formation, and function from the many other proinflammatory lipid-derived mediators. These endogenous eicosanoids have now emerged as founding members of the first class of lipid/chemical mediators involved in the resolution of the inflammatory response. Lipoxin A4 (LXA4), ATL, and their metabolic stable analogs elicit cellular responses and regulate leukocyte trafficking in vivo by activating the specific receptor, ALX. Many of the eicosanoids derived from arachidonic acid (AA2), including prostaglandins (PGs) and leukotrienes (LTs), play important roles as local mediators exerting a wide range of actions relevant in immune hypersensitivity and inflammation. However, recent observations indicate that other agents derived from the lipoxygenase (LO) pathways are formed and play a key role in initiating the resolution of acute inflammation. This phenomenon is an active process that is governed by specific lipid mediators and involves a series of well-orchestrated temporal events. Thus, potent locally released mediators serve as checkpoint controllers of inflammation. In addition to the well-appreciated ability of aspirin to inhibit PGs, aspirin also acetylates cyclooxygenase (COX)-2, triggering the formation of a 15-epimeric form of lipoxins, termed aspirin-triggered LXA4 (ATL). These eicosanoids (i.e. LXA4 and ATL) with a unique trihydroxytetraene structure function as stop signals in inflammation and actively participate in dampening host responses to bring the inflammation to a close, namely, resolution. LXA4 and ATL elicit the multicellular responses via a specific G protein-coupled receptor (GPCR) termed ALX that has been identified in human (PMID: 16968948, 11478982). Lipoxins (LXs) and aspirin-triggered Lipoxin (ATL) are trihydroxytetraene-containing eicosanoids generated from arachidonic acid that are distinct in structure, formation, and function from the many other proinflammatory lipid-derived mediators. These endogenous eicosanoids have now emerged as founding members of the first class of lipid/chemical mediators involved in the resolution of the inflammatory response. Lipoxin A4 (LXA4), ATL, and their metabolic stable analogs elicit cellular responses and regulate leukocyte trafficking in vivo by activating the specific receptor, ALX. Many of the eicosanoids derived from arachidonic acid (AA2), including prostaglandins (PGs) and leukotrienes (LTs), play important roles as local mediators exerting a wide range of actions relevant in immune hypersensitivity and inflammation. However, recent observations indicate that other agents derived from the lipoxygenase (LO) pathways are formed and play a key role in initiating the resolution of acute inflammation. This phenomenon is an active process that is governed by specific lipid mediators and involves a series of well-orchestrated temporal events. Thus, potent locally released mediators serve as checkpoint controllers of inflammation. D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000893 - Anti-Inflammatory Agents D018501 - Antirheumatic Agents
Prostaglandin D1
Prostaglandin D1 is a prostanoid that elicits contractile and relaxant on isolated human pial arteries with small potency. Prostanoids is a term that collectively describes prostaglandins, prostacyclines and thromboxanes. Prostanoids are a subclass of the lipid mediator group known as eicosanoids. They derive from C-20 polyunsaturated fatty acids, mainly dihomo-gamma-linoleic (20:3n-6), arachidonic (20:4n-6), and eicosapentaenoic (20:5n-3) acids, through the action of cyclooxygenases-1 and -2 (COX-1 and COX-2). The reaction product of COX is the unstable endoperoxide prostaglandin H (PGH) that is further transformed into the individual prostanoids by a series of specific prostanoid synthases. Prostanoids are local-acting mediators formed and inactivated within the same or neighbouring cells prior to their release into circulation as inactive metabolites (15-keto- and 13,14-dihydroketo metabolites). Non-enzymatic peroxidation of arachidonic acid and other fatty acids in vivo can result in prostaglandin-like substances isomeric to the COX-derived prostaglandins that are termed isoprostanes. Prostanoids take part in many physiological and pathophysiological processes in practically every organ, tissue and cell, including the vascular, renal, gastrointestinal and reproductive systems. Their activities are mediated through prostanoid-specific receptors and intracellular signalling pathways, whilst their biosynthesis and action are blocked by nonsteroidal antiinflammatory drugs (NSAID). Isoprostanes are considered to be reliable markers of oxidant stress status and have been linked to inflammation, ischaemia-reperfusion, diabetes, cardiovascular disease, reproductive disorders and diabetes. (PMID: 6091419, 16986207)Prostaglandins are eicosanoids. The eicosanoids consist of the prostaglandins (PGs), thromboxanes (TXs), leukotrienes (LTs), and lipoxins (LXs). The PGs and TXs are collectively identified as prostanoids. Prostaglandins were originally shown to be synthesized in the prostate gland, thromboxanes from platelets (thrombocytes), and leukotrienes from leukocytes, hence the derivation of their names. All mammalian cells except erythrocytes synthesize eicosanoids. These molecules are extremely potent, able to cause profound physiological effects at very dilute concentrations. All eicosanoids function locally at the site of synthesis, through receptor-mediated G-protein linked signalling pathways. Prostaglandin D1 is a prostanoid that elicits contractile and relaxant on isolated human pial arteries with small potency. Prostanoids is a term that collectively describes prostaglandins, prostacyclines and thromboxanes. Prostanoids are a subclass of the lipid mediator group known as eicosanoids. They derive from C-20 polyunsaturated fatty acids, mainly dihomo-gamma-linoleic (20:3n-6), arachidonic (20:4n-6), and eicosapentaenoic (20:5n-3) acids, through the action of cyclooxygenases-1 and -2 (COX-1 and COX-2). The reaction product of COX is the unstable endoperoxide prostaglandin H (PGH) that is further transformed into the individual prostanoids by a series of specific prostanoid synthases. Prostanoids are local-acting mediators formed and inactivated within the same or neighbouring cells prior to their release into circulation as inactive metabolites (15-keto- and 13,14-dihydroketo metabolites). Non-enzymatic peroxidation of arachidonic acid and other fatty acids in vivo can result in prostaglandin-like substances isomeric to the COX-derived prostaglandins that are termed isoprostanes. Prostanoids take part in many physiological and pathophysiological processes in practically every organ, tissue and cell, including the vascular, renal, gastrointestinal and reproductive systems. Their activities are mediated through prostanoid-specific receptors and intracellular signalling pathways, whilst their biosynthesis and action are blocked by nonsteroidal antiinflammatory drugs (NSAID). Isoprostanes are considered to be reliable markers of oxidant stress status and have been linked to inflammation, ischaemia-reperfusion, diabetes, cardiovascular disease, reproductive disorders and diabetes. (PMID: 6091419, 16986207)
Physovenine
Morusin
Morusin is an extended flavonoid that is flavone substituted by hydroxy groups at positions 5, 2 and 4, a prenyl group at position 3 and a 2,2-dimethyl pyran group across positions 7 and 8. It has a role as a plant metabolite and an antineoplastic agent. It is a trihydroxyflavone and an extended flavonoid. Morusin is a natural product found in Morus alba var. multicaulis, Broussonetia papyrifera, and other organisms with data available. An extended flavonoid that is flavone substituted by hydroxy groups at positions 5, 2 and 4, a prenyl group at position 3 and a 2,2-dimethyl pyran group across positions 7 and 8. Morusin is found in fruits. Morusin is a constituent of the root bark of Morus alba (mulberry) and other Morus species Constituent of the root bark of Morus alba (mulberry) and other Morus subspecies Morusin is found in fruits. Morusin is a prenylated flavonoid isolated from Morus alba Linn. with various biological activities, such as antitumor, antioxidant, and anti-bacteria property. Morusin could inhibit NF-κB and STAT3 activity. Morusin is a prenylated flavonoid isolated from Morus alba Linn. with various biological activities, such as antitumor, antioxidant, and anti-bacteria property. Morusin could inhibit NF-κB and STAT3 activity.
Isodiospyrin
Isodiospyrin is a member of biphenyls. Isodiospyrin is a natural product found in Diospyros morrisiana, Diospyros verrucosa, and other organisms with data available. Isodiospyrin, a natural dimeric naphthoquinone, is a human DNA topoisomerase I (Topoisomerase) inhibitor. Isodiospyrin can prevent both DNA relaxation and kinase activities of human topoisomerase I. Isodiospyrin shows anticancer, antibacterial and antifungal activities[1][2][3]. Isodiospyrin, a natural dimeric naphthoquinone, is a human DNA topoisomerase I (Topoisomerase) inhibitor. Isodiospyrin can prevent both DNA relaxation and kinase activities of human topoisomerase I. Isodiospyrin shows anticancer, antibacterial and antifungal activities[1][2][3].
Physcion 8-gentiobioside
Physcion 8-gentiobioside is a constituent of seeds of sicklepod (Cassia torosa) Constituent of seeds of sicklepod (Cassia torosa)
Sophoraisoflavanone A
A hydroxyisoflavanone that is isoflavanone substituted by hydroxy groups at positions 5, 7 and 4, a methoxy substituent at position 2 and a prenyl group at position 3.
5,6-DHET
5,6-DHET is an epoxide intermediate in the oxygenation of arachidonic acid by hepatic monooxygenases pathway. 5,6-DHET is the hydrolysis metabolite of cis-5(6)Epoxy-cis-8,11,14-eicosatrienoic acid by epoxide hydrolases. Many drugs, chemicals, and endogenous compounds are oxygenated in mammalian tissues and in some instances reactive and potentially toxic or carcinogenic epoxides are formed. Naturally occurring olefins may also be oxygenated by mammalian enzymes. The most well known are lipoxygenases and microsomal cytochrome P-450-linked monooxygenases. The epoxides may be chemically labile or may be enzymatically hydrolyzed. When arene or olefinic epoxides are formed by microsomal P-450-linked monooxygenases, they are often rapidly converted to less reactive trans-diols through the action of microsomal epoxide hydrolases. (PMID: 6801052, 6548162) [HMDB] 5,6-DHET is an epoxide intermediate in the oxygenation of arachidonic acid by hepatic monooxygenases pathway. 5,6-DHET is the hydrolysis metabolite of cis-5(6)Epoxy-cis-8,11,14-eicosatrienoic acid by epoxide hydrolases. Many drugs, chemicals, and endogenous compounds are oxygenated in mammalian tissues and in some instances reactive and potentially toxic or carcinogenic epoxides are formed. Naturally occurring olefins may also be oxygenated by mammalian enzymes. The most well known are lipoxygenases and microsomal cytochrome P-450-linked monooxygenases. The epoxides may be chemically labile or may be enzymatically hydrolyzed. When arene or olefinic epoxides are formed by microsomal P-450-linked monooxygenases, they are often rapidly converted to less reactive trans-diols through the action of microsomal epoxide hydrolases. (PMID: 6801052, 6548162).
15H-11,12-EETA
15H-11,12-EETA is an epoxyeicosatrienoic acid (EET). The role of EETs in regulation of the cerebral circulation has become more important, since it was realized that EETs are produced in another specialized cell type of the brain, the astrocytes. It has become evident that EETs released from astrocytes may mediate cerebral functional hyperemia. Molecular and pharmacological evidence hve shown that neurotransmitter release and spillover onto astrocytes can generate EETs. Since these EETs may reach the vasculature via astrocyte foot-processes, they have the same potential as their endothelial counterparts to hyperpolarize and dilate cerebral vessels. P450 enzymes contain heme in their catalytic domain and nitric oxide (NO) appears to bind to these heme moieties and block formation of P450 products, including EETs. Thus, there appears to be crosstalk between P450 enzymes and NO/NO synthase. The role of fatty acid metabolites and cerebral blood flow becomes even more complex in light of data demonstrating that cyclooxygenase products can act as substrates for P450 enzymes. (PMID: 17494091, 17468203, 17434916, 17406062, 17361113, 15581597, 11413051, 10519554, 11893556) [HMDB] 15H-11,12-EETA is an epoxyeicosatrienoic acid (EET). The role of EETs in regulation of the cerebral circulation has become more important, since it was realized that EETs are produced in another specialized cell type of the brain, the astrocytes. It has become evident that EETs released from astrocytes may mediate cerebral functional hyperemia. Molecular and pharmacological evidence hve shown that neurotransmitter release and spillover onto astrocytes can generate EETs. Since these EETs may reach the vasculature via astrocyte foot-processes, they have the same potential as their endothelial counterparts to hyperpolarize and dilate cerebral vessels. P450 enzymes contain heme in their catalytic domain and nitric oxide (NO) appears to bind to these heme moieties and block formation of P450 products, including EETs. Thus, there appears to be crosstalk between P450 enzymes and NO/NO synthase. The role of fatty acid metabolites and cerebral blood flow becomes even more complex in light of data demonstrating that cyclooxygenase products can act as substrates for P450 enzymes. (PMID: 17494091, 17468203, 17434916, 17406062, 17361113, 15581597, 11413051, 10519554, 11893556).
11,12,15-THETA
11,12,15-trihydroxyeicosatrienoic acid (11,12,15-THETA) is a metabolite of the 15-lipoxygenase (15-LO) pathway of arachidonic acid (AA). 11,12,15-THETA is an endothelium-derived relaxing factor. Acetylcholine stimulates AA release from membrane phospholipids of vascular endothelial cells (ECs). AA is released from phosphatidylcholine (PC) and phosphatidylethanolamine (PE) by phospholipase A2 (PLA2), or from phosphatidylinositol (PI) by phospholipase C (PLC) pathway. The diacylglycerol (DAG) lipase can convert DAG into 2-arachidonoylglycerol from which free AA can be released by monoacylglycerol (MAG) lipase or fatty acid amidohydrolase (FAAH). 11,12,15-THETA mediates the acetylcholine-induced vaso-relaxation, via activation of the K+ channels to hyperpolarize the smooth muscle membrane and induce relaxation. (PMID: 12907422, 16024567, 15388505, 14622984) [HMDB] 11,12,15-trihydroxyeicosatrienoic acid (11,12,15-THETA) is a metabolite of the 15-lipoxygenase (15-LO) pathway of arachidonic acid (AA). 11,12,15-THETA is an endothelium-derived relaxing factor. Acetylcholine stimulates AA release from membrane phospholipids of vascular endothelial cells (ECs). AA is released from phosphatidylcholine (PC) and phosphatidylethanolamine (PE) by phospholipase A2 (PLA2), or from phosphatidylinositol (PI) by phospholipase C (PLC) pathway. The diacylglycerol (DAG) lipase can convert DAG into 2-arachidonoylglycerol from which free AA can be released by monoacylglycerol (MAG) lipase or fatty acid amidohydrolase (FAAH). 11,12,15-THETA mediates the acetylcholine-induced vaso-relaxation, via activation of the K+ channels to hyperpolarize the smooth muscle membrane and induce relaxation. (PMID: 12907422, 16024567, 15388505, 14622984).
Hepoxilin B3
Hepoxilin B3 is a normal human epidermis eicosanoid. Hepoxilin B3 is dramatically elevated in psoriatic lesions. The primary biological action of the hepoxilins appears to relate to their ability to release calcium from intracellular stores through a receptor-mediated action. The receptor is intracellular, and appears to be G-protein coupled. The conversion of hepoxilin into its omega-hydroxy catabolite has recently been demonstrated through the action of an omega-hydroxylase. This enzyme is different from that which oxidizes leukotriene B4, as the former activity is lost when the cell is disrupted, while leukotriene B4-catabolic activity is recovered in both the intact and disrupted cell. Additionally, hepoxilin catabolism is inhibited by CCCP, a mitochondrial uncoupler, while leukotriene catabolism is unaffected. As hepoxilins cause the translocation of calcium from intracellular stores in the endoplasmic reticulum to the mitochondria, it is speculated that hepoxilin omega-oxidation takes place in the mitochondria, and the omega-oxidation product facilitates accumulation of the elevated cytosolic calcium by the mitochondria. (PMID 10692117, 11851887, 10086189) [HMDB] Hepoxilin B3 is a normal human epidermis eicosanoid. Hepoxilin B3 is dramatically elevated in psoriatic lesions. The primary biological action of the hepoxilins appears to relate to their ability to release calcium from intracellular stores through a receptor-mediated action. The receptor is intracellular, and appears to be G-protein coupled. The conversion of hepoxilin into its omega-hydroxy catabolite has recently been demonstrated through the action of an omega-hydroxylase. This enzyme is different from that which oxidizes leukotriene B4, as the former activity is lost when the cell is disrupted, while leukotriene B4-catabolic activity is recovered in both the intact and disrupted cell. Additionally, hepoxilin catabolism is inhibited by CCCP, a mitochondrial uncoupler, while leukotriene catabolism is unaffected. As hepoxilins cause the translocation of calcium from intracellular stores in the endoplasmic reticulum to the mitochondria, it is speculated that hepoxilin omega-oxidation takes place in the mitochondria, and the omega-oxidation product facilitates accumulation of the elevated cytosolic calcium by the mitochondria. (PMID 10692117, 11851887, 10086189).
Troxilin B3
Troxilin B3 is the enzymatically formed derivative of Hepoxilin B3. Normal human epidermis incubated with exogenous AA produces 12-oxo-eicosatetraenoic acid (12-oxo-ETE), hepoxilin A3 (HxA3), and hepoxilin B3 (HxB3) through the 12- Lipoxygenase (LO) pathway. 12-LO is the major arachidonic acid (AA) oxygenation pathway in epidermal cells with total product formation generally exceeding cyclooxygenase activity. Platelet-type 12-LO has been found to be the predominant isoenzyme expressed in human and murine skin epidermis. Increased levels of nonesterified hepoxilins and trioxilins occur in the psoriatic scales. Normal human epidermis synthesized only one of the two possible 10-hydroxy epimers of HxB3 whose formation is probably catalyzed by 12-LO. Hepoxilins exert action on plasma permeability on skin, and induce a specific-receptor-dependent Ca2+ mobilization from endogenous sources and the release of AA and diacylglycerols. (PMID: 11851887) [HMDB] Troxilin B3 is the enzymatically formed derivative of Hepoxilin B3. Normal human epidermis incubated with exogenous AA produces 12-oxo-eicosatetraenoic acid (12-oxo-ETE), hepoxilin A3 (HxA3), and hepoxilin B3 (HxB3) through the 12- Lipoxygenase (LO) pathway. 12-LO is the major arachidonic acid (AA) oxygenation pathway in epidermal cells with total product formation generally exceeding cyclooxygenase activity. Platelet-type 12-LO has been found to be the predominant isoenzyme expressed in human and murine skin epidermis. Increased levels of nonesterified hepoxilins and trioxilins occur in the psoriatic scales. Normal human epidermis synthesized only one of the two possible 10-hydroxy epimers of HxB3 whose formation is probably catalyzed by 12-LO. Hepoxilins exert action on plasma permeability on skin, and induce a specific-receptor-dependent Ca2+ mobilization from endogenous sources and the release of AA and diacylglycerols. (PMID: 11851887).
manoalide
A sesterterpenoid isolated from the marine sponge Luffariella variabilis and which has been shown to exhibit inhibitory activity towards phospholipase A2. D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D004791 - Enzyme Inhibitors > D010726 - Phosphodiesterase Inhibitors D002317 - Cardiovascular Agents > D002121 - Calcium Channel Blockers D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000077264 - Calcium-Regulating Hormones and Agents D049990 - Membrane Transport Modulators D000893 - Anti-Inflammatory Agents D018501 - Antirheumatic Agents
Leukotriene B4
Leukotriene B4 is the major metabolite in neutrophil polymorphonuclear leukocytes. Leukotrienes are metabolites of arachidonic acid derived from the action of 5-LO (5-lipoxygenase). The immediate product of 5-LO is LTA4 (leukotriene A4), which is enzymatically converted into either LTB4 (leukotriene B4) by LTA4 hydrolase or LTC4 (leukotriene C4) by LTC4 synthase. The regulation of leukotriene production occurs at various levels, including expression of 5-LO, translocation of 5-LO to the perinuclear region, and phosphorylation to either enhance or inhibit the activity of 5-LO. Biologically active LTB4 is metabolized by omega-oxidation carried out by specific cytochrome P450s (CYP4F) followed by beta-oxidation from the omega-carboxy position and after CoA ester formation. Other specific pathways of leukotriene metabolism include the 12-hydroxydehydrogenase/15-oxo-prostaglandin-13-reductase that form a series of conjugated diene metabolites that have been observed to be excreted in human urine. Metabolism of LTC4 occurs by sequential peptide cleavage reactions involving a gamma-glutamyl transpeptidase that forms LTD4 (leukotriene D4) and a membrane-bound dipeptidase that converts LTD4 into LTE4 (leukotriene E4) before omega-oxidation. These metabolic transformations of the primary leukotrienes are critical for termination of their biological activity, and defects in expression of participating enzymes may be involved in specific genetic disease. The term leukotriene was coined to indicate the presence of three conjugated double bonds within the 20-carbon structure of arachidonic acid as well as the fact that these compounds were derived from leucocytes such as PMNNs or transformed mast cells. Interestingly, most of the cells known to express 5-LO are of myeloid origin, which includes neutrophils, eosinophils, mast cells, macrophages, basophils, and monocytes. Leukotriene biosynthesis begins with the specific oxidation of arachidonic acid by a free radical mechanism as a consequence of interaction with 5-LO. The first enzymatic step involves the abstraction of a hydrogen atom from C-7 of arachidonate followed by the addition of molecular oxygen to form 5-HpETE (5-hydroperoxyeicosatetraenoic acid). A second enzymatic step is also catalyzed by 5-LO and involves removal of a hydrogen atom from C-10, resulting in the formation of the conjugated triene epoxide LTA4. LTA4 must then be released by 5-LO and encounter either LTA4-H (LTA4 hydrolase) or LTC4-S [LTC4 (leukotriene C4) synthase]. LTA4-H can stereospecifically add water to C-12 while retaining a specific double-bond geometry, leading to LTB4 [leukotriene B4, 5(S),12(R)-dihydroxy-6,8,10,14-(Z,E,E,Z)-eicosatetraenoic acid]. If LTA4 encounters LTC4-S, then the reactive epoxide is opened at C-6 by the thiol anion of glutathione to form the product LTC4 [5(S)-hydroxy-6(R)-S-glutathyionyl-7,9,11,14- (E,E,Z,Z)-eicosatetraenoic acid], essentially a glutathionyl adduct of oxidized arachidonic acid. Both of these terminal leukotrienes are biologically active in that specific GPCRs recognize these chemical structures and receptor recognition initiates complex intracellular signalling cascades. In order for these molecules to serve as lipid mediators, however, they must be released from the biosynthetic cell into the extracellular milieu so that they can encounter the corresponding GPCRs. Surprising features of this cascade include the recognition of the assembly of critical enzymes at the perinuclear region of the cell and even localization of 5-LO within the nucleus of some cells. Under some situations, the budding phagosome has been found to assemble these proteins. Non-enzymatic proteins such as FLAP are now known as critical partners of this protein-machine assembly. An unexpected pathway of leukotriene biosynthesis involves the transfer of the chemically reactive intermediate, LTA4, from the biosynthetic cell followed by conversion into LTB4 or LTC4 by other cells that do not express ...
14R,15S-EpETrE
14R,15S-EpETrE is the dominant extracellular metabolite of epoxygenase products of arachidonic acid released from human luteinised granulosa cells. Epoxyeicosatrienoic acids (EpETrEs) have been reported recently having vasodilatory effects and a role of P-450-dependent arachidonic acid monooxygenase metabolites is suggested in vasoregulation. The physiological role of this compound has not been totally established, although in other tissues EpETrEs are mainly involved in hormone production and in the vascular and renal systems. Some studies have implicated epoxygenase metabolites of arachidonic acid in the control of steroidogenesis in luteinised granulosa cells. (PMID: 12749593, 12361727, 1650001) [HMDB] 14R,15S-EpETrE is the dominant extracellular metabolite of epoxygenase products of arachidonic acid released from human luteinised granulosa cells. Epoxyeicosatrienoic acids (EpETrEs) have been reported recently having vasodilatory effects and a role of P-450-dependent arachidonic acid monooxygenase metabolites is suggested in vasoregulation. The physiological role of this compound has not been totally established, although in other tissues EpETrEs are mainly involved in hormone production and in the vascular and renal systems. Some studies have implicated epoxygenase metabolites of arachidonic acid in the control of steroidogenesis in luteinised granulosa cells. (PMID: 12749593, 12361727, 1650001). D002317 - Cardiovascular Agents > D014665 - Vasodilator Agents
13-HPODE(1-)
13-HPODE(1-) is also known as 13-Hydroperoxy-(9Z,11E)-octadecadienoate. 13-HPODE(1-) is considered to be practically insoluble (in water) and acidic
6-[2-Amino-3-(carboxymethylamino)-3-oxopropyl]sulfanyl-5-hydroxyicosa-7,9,11,14-tetraenoic acid
15-Hydroperoxyicosa-5,8,11,13-tetraenoic acid
7,8,17-trihydroxy-4,9,11,13,15,19-docosahexaenoic acid
FA 22:6
Chemical was purchased from CAY 90310 (Lot. 0458708-4); Diagnostic ions: 327.1, 283.2, 229.7,191.1, 177.2 COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials CONFIDENCE standard compound; INTERNAL_ID 296 Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Docosahexaenoic Acid (DHA) is an omega-3 fatty acid abundantly present brain and retina. It can be obtained directly from fish oil and maternal milk.
N-Acetylornithine
N-Acetylornithine is an intermediate in the enzymatic biosynthesis of the amino acid L-arginine from L-glutamate.
Baicalein
Baicalein is a trihydroxyflavone with the hydroxy groups at positions C-5, -6 and -7. It has a role as an antioxidant, a hormone antagonist, a prostaglandin antagonist, an EC 1.13.11.31 (arachidonate 12-lipoxygenase) inhibitor, an EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor, a radical scavenger, an EC 3.4.21.26 (prolyl oligopeptidase) inhibitor, an anti-inflammatory agent, a plant metabolite, a ferroptosis inhibitor, an anticoronaviral agent, an EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor, an angiogenesis inhibitor, an antineoplastic agent, an EC 4.1.1.17 (ornithine decarboxylase) inhibitor, an antibacterial agent, an antifungal agent, an apoptosis inducer and a geroprotector. It is a conjugate acid of a baicalein(1-). Baicalein is under investigation in clinical trial NCT03830684 (A Randomized, Double-blind, Placebo-controlled, Multicenter and Phase ⅡA Clinical Trial for the Effectiveness and Safety of Baicalein Tablets in the Treatment of Improve Other Aspects of Healthy Adult With Influenza Fever). Baicalein is a natural product found in Stachys annua, Stellera chamaejasme, and other organisms with data available. D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists > D011448 - Prostaglandin Antagonists A trihydroxyflavone with the hydroxy groups at positions C-5, -6 and -7. D020011 - Protective Agents > D000975 - Antioxidants COVID info from PDB, Protein Data Bank D004791 - Enzyme Inhibitors Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Baicalein, also known as 5,6,7-trihydroxyflavone or baicalein (old), is a member of the class of compounds known as flavones. Flavones are flavonoids with a structure based on the backbone of 2-phenylchromen-4-one (2-phenyl-1-benzopyran-4-one). Thus, baicalein is considered to be a flavonoid lipid molecule. Baicalein is practically insoluble (in water) and a very weakly acidic compound (based on its pKa). Baicalein can be found in welsh onion, which makes baicalein a potential biomarker for the consumption of this food product. Baicalein, along with its analogue baicalin, is a positive allosteric modulator of the benzodiazepine site and/or a non-benzodiazepine site of the GABAA receptor. It displays subtype selectivity for α2 and α3 subunit-containing GABAA receptors. In accordance, baicalein shows anxiolytic effects in mice without incidence of sedation or myorelaxation. It is thought that baicalein, along with other flavonoids, may underlie the anxiolytic effects of S. baicalensis and S. lateriflora. Baicalein is also an antagonist of the estrogen receptor, or an antiestrogen . Annotation level-1 Baicalein (5,6,7-Trihydroxyflavone) is a xanthine oxidase inhibitor with an IC50 value of 3.12 μM. Baicalein. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=491-67-8 (retrieved 2024-12-12) (CAS RN: 491-67-8). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).
Morusin
Morusin is a prenylated flavonoid isolated from Morus alba Linn. with various biological activities, such as antitumor, antioxidant, and anti-bacteria property. Morusin could inhibit NF-κB and STAT3 activity. Morusin is a prenylated flavonoid isolated from Morus alba Linn. with various biological activities, such as antitumor, antioxidant, and anti-bacteria property. Morusin could inhibit NF-κB and STAT3 activity.
Nordihydroguaiaretic_acid
Nordihydroguaiaretic acid is a tetrol that is butane which is substituted at positions 2 and 3 by 3,4-dihydroxybenzyl groups. Masoprocol, the meso-form found in the leaves of the creosote bush (Larrea divaricata), is a potent lipoxygenase inhibitor. It has a role as an antioxidant, a plant metabolite, a ferroptosis inhibitor and a geroprotector. It is a member of catechols, a tetrol and a lignan. Nordihydroguaiaretic acid is a natural product found in Arabidopsis thaliana, Schisandra chinensis, and other organisms with data available. A potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. The compound also inhibits formyltetrahydrofolate synthetase, carboxylesterase, and cyclooxygenase to a lesser extent. It also serves as an antioxidant in fats and oils. D018501 - Antirheumatic Agents > D000894 - Anti-Inflammatory Agents, Non-Steroidal > D016861 - Cyclooxygenase Inhibitors D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors D002491 - Central Nervous System Agents > D000700 - Analgesics D020011 - Protective Agents > D000975 - Antioxidants D000893 - Anti-Inflammatory Agents Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor.
Norathyriol
Norathyriol is a member of the class of xanthones that is 9H-xanthen-9-one substituted by hydroxy groups at positions 1, 3, 6 and 7. Isolated from Garcinia mangostana and Maclura pomifera, it exhibits inhibitory activity against protein kinase C. It has a role as an antineoplastic agent, an EC 2.7.11.13 (protein kinase C) inhibitor and a plant metabolite. It is a member of xanthones and a polyphenol. Norathyriol is a natural product found in Hypericum aucheri, Hypericum elegans, and other organisms with data available. A member of the class of xanthones that is 9H-xanthen-9-one substituted by hydroxy groups at positions 1, 3, 6 and 7. Isolated from Garcinia mangostana and Maclura pomifera, it exhibits inhibitory activity against protein kinase C.
13-HoTrE
A hydroxyoctadecatrienoic acid that consists of 9Z,11E,15Z-octadecatrienoic acid bearing an additional 13-hydroxy substituent. CONFIDENCE standard compound; NATIVE_RUN_ID STD_neg_MSMS_1min0099.mzML; PROCESSING averaging of repeated ion fragments at 30.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID STD_neg_MSMS_1min0099.mzML; PROCESSING averaging of repeated ion fragments at 20.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID STD_neg_MSMS_1min0099.mzML; PROCESSING averaging of repeated ion fragments at 10.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001341.mzML; PROCESSING averaging of repeated ion fragments at 30.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001341.mzML; PROCESSING averaging of repeated ion fragments at 20.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001341.mzML; PROCESSING averaging of repeated ion fragments at 10.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001341.mzML; PROCESSING averaging of repeated ion fragments at 40.0 NCE within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001341.mzML; PROCESSING averaging of repeated ion fragments at 30.0 NCE within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001341.mzML; PROCESSING averaging of repeated ion fragments at 20.0 NCE within 5 ppm window [MS, MS:1000575, mean of spectra, ]
Lipoxin A4
A C20 hydroxy fatty acid having (5S)-, (6R)- and (15S)-hydroxy groups as well as (7E)- (9E)-, (11Z)- and (13E)-double bonds. D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000893 - Anti-Inflammatory Agents D018501 - Antirheumatic Agents Chemical was purchased from CAY90410 (Lot D433602-40); Diagnostic ions: 351.2, 251.1, 235,1, 145.6, 114.9
Nordihydroguaiaretic Acid
A tetrol that is butane which is substituted at positions 2 and 3 by 3,4-dihydroxybenzyl groups. Masoprocol, the meso-form found in the leaves of the creosote bush (Larrea divaricata), is a potent lipoxygenase inhibitor. D018501 - Antirheumatic Agents > D000894 - Anti-Inflammatory Agents, Non-Steroidal > D016861 - Cyclooxygenase Inhibitors relative retention time with respect to 9-anthracene Carboxylic Acid is 1.073 D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors D002491 - Central Nervous System Agents > D000700 - Analgesics D020011 - Protective Agents > D000975 - Antioxidants D000893 - Anti-Inflammatory Agents relative retention time with respect to 9-anthracene Carboxylic Acid is 1.074 Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor. Nordihydroguaiaretic acid is a 5-lipoxygenase (5LOX) (IC50=8 μM) and tyrosine kinase inhibitor.
Esculetin
D020011 - Protective Agents > D000975 - Antioxidants relative retention time with respect to 9-anthracene Carboxylic Acid is 0.434 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.428 relative retention time with respect to 9-anthracene Carboxylic Acid is 0.430 Esculetin is an active ingredient extracted mainly from the bark of Fraxinus rhynchophylla. Esculetin inhibits platelet-derived growth factor (PDGF)-induced airway smooth muscle cells (ASMCs) phenotype switching through inhibition of PI3K/Akt pathway. Esculetin has antioxidant, antiinflammatory, and antitumor activities[1]. Esculetin is an active ingredient extracted mainly from the bark of Fraxinus rhynchophylla. Esculetin inhibits platelet-derived growth factor (PDGF)-induced airway smooth muscle cells (ASMCs) phenotype switching through inhibition of PI3K/Akt pathway. Esculetin has antioxidant, antiinflammatory, and antitumor activities[1]. Esculetin is an active ingredient extracted mainly from the bark of Fraxinus rhynchophylla. Esculetin inhibits platelet-derived growth factor (PDGF)-induced airway smooth muscle cells (ASMCs) phenotype switching through inhibition of PI3K/Akt pathway. Esculetin has antioxidant, antiinflammatory, and antitumor activities[1].
Kaempferide
relative retention time with respect to 9-anthracene Carboxylic Acid is 1.191 relative retention time with respect to 9-anthracene Carboxylic Acid is 1.194 relative retention time with respect to 9-anthracene Carboxylic Acid is 1.190 Kaempferide is an O-methylated flavonol also found in kaempferol. Kaempferide has antiviral activity. Kaempferide is an orally active flavonol isolated from Hippophae rhamnoides L. Kaempferide has anticancer, anti-inflammatory, antioxidant, antidiabetic, antiobesity, antihypertensive, and neuroprotective activities. Kaempferide induces apoptosis. Kaempferide promotes osteogenesis through antioxidants and can be used in osteoporosis research[1][2][3][4][5][6]. Kaempferide is an O-methylated flavonol also found in kaempferol. Kaempferide has antiviral activity.
Kaempferid
Kaempferide is an O-methylated flavonol also found in kaempferol. Kaempferide has antiviral activity. Kaempferide is an orally active flavonol isolated from Hippophae rhamnoides L. Kaempferide has anticancer, anti-inflammatory, antioxidant, antidiabetic, antiobesity, antihypertensive, and neuroprotective activities. Kaempferide induces apoptosis. Kaempferide promotes osteogenesis through antioxidants and can be used in osteoporosis research[1][2][3][4][5][6]. Kaempferide is an O-methylated flavonol also found in kaempferol. Kaempferide has antiviral activity.
7-Ketodeoxycholic acid
D005765 - Gastrointestinal Agents > D001647 - Bile Acids and Salts D005765 - Gastrointestinal Agents > D002793 - Cholic Acids CONFIDENCE standard compound; INTERNAL_ID 265 7-keto-lithocholic acid is a metabolite of bile acids in Clostridium absonum. 7-keto-lithocholic acid is also converted from Lactobacillus and Bifidobacterium with specific condition[1][2].
5-HpETE
A HPETE that consists of (6E,8Z,11Z,14Z)-icosatetraenoic acid in which the hydroperoxy group is located at position 5. An icosatetraenoic acid in which the double bonds are located at the 6-7, 8-9, 11-12, and 14-15 positions and have E, Z, Z, and Z geometry, respectively, and in which the pro-S hydrogen is substituted by a hydroperoxy group. CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001297.mzML; PROCESSING averaging of repeated ion fragments at 30.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001297.mzML; PROCESSING averaging of repeated ion fragments at 20.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001297.mzML; PROCESSING averaging of repeated ion fragments at 10.0 eV within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001297.mzML; PROCESSING averaging of repeated ion fragments at 40.0 NCE within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001297.mzML; PROCESSING averaging of repeated ion fragments at 30.0 NCE within 5 ppm window [MS, MS:1000575, mean of spectra, ] CONFIDENCE standard compound; NATIVE_RUN_ID QExHF03_NM_0001297.mzML; PROCESSING averaging of repeated ion fragments at 20.0 NCE within 5 ppm window [MS, MS:1000575, mean of spectra, ]
Leukotriene C4
A leukotriene that is (5S,7E,9E,11Z,14Z)-5-hydroxyicosa-7,9,11,14-tetraenoic acid in which a glutathionyl group is attached at position 6 via a sulfide linkage.
Desmesterol
A cholestanoid that is cholesta-5,24-diene substituted by a beta-hydroxy group at position 3. It is an intermediate metabolite obtained during the synthesis of cholesterol. Desmosterol is a molecule similar to cholesterol. Desmosterol is the immediate precursor of cholesterol in the Bloch pathway of cholesterol biosynthesis. Desmosterol, as an endogenous metabolite, used to study cholesterol metabolism[1]. Desmosterol is a molecule similar to cholesterol. Desmosterol is the immediate precursor of cholesterol in the Bloch pathway of cholesterol biosynthesis. Desmosterol, as an endogenous metabolite, used to study cholesterol metabolism[1].
12-Hete
A HETE that is icosa-5,8,10,14-tetraenoic acid substituted by a hydroxy group at position 12. It is a metabolite of arachidonic acid. A HETE having a (12S)-hydroxy group and (5Z)-, (8Z)-, (10E)- and (14Z)-double bonds.
FA 22:5
The all-cis-isomer of a C22 polyunsaturated fatty acid having five double bonds in the 7-, 10-, 13-, 16- and 19-positions. Docosapentaenoic acid (22n-3) is a component of phospholipids found in all animal cell membranes.
Prostaglandin D2
A member of the class of prostaglandins D that is prosta-5,13-dien-1-oic acid substituted by hydroxy groups at positions 9 and 15 and an oxo group at position 11 (the 5Z,9alpha,13E,15S- stereoisomer).
Prostaglandin J2
A member of the class of prostaglandins J that consists of prosta-5,9,13-trien-1-oic acid substituted by an oxo group at position 11 and a hydroxy group at position 15 (the 5Z,13E,15S stereoisomer). D000970 - Antineoplastic Agents
Leukotriene E
A leukotriene that is (7E,9E,11Z,14Z)-icosa-7,9,11,14-tetraenoic acid substituted by a hydroxy group at position 5 (5S) and an L-cystein-S-yl group at position 6 (6R).
Leukotriene D4
A leukotriene that is (7E,9E,11Z,14Z)-icosa-7,9,11,14-tetraenoic acid substituted by a hydroxy group at position 5 (5S) and a L-cysteinylglycinyl group at position 6 (6R).
Leukotriene A4
A leukotriene that is the (5S,6S)-epoxy derivative of (7E,9E,11Z,14Z)-icosa-7,9,11,14-tetraenoic acid.
lipoxin B4
A C20 hydroxy fatty acid having (5S)-, (14R)- and (15S)-hydroxy groups as well as (6E)- (8Z)-, (10E)- and (12E)-double bonds. D018373 - Peripheral Nervous System Agents > D018689 - Sensory System Agents D002491 - Central Nervous System Agents > D000700 - Analgesics D000893 - Anti-Inflammatory Agents D018501 - Antirheumatic Agents
Resolvin D2
A member of the class of resolvins that is (4Z,8E,10Z,12E,14E,19Z)-docosahexaenoic acid carrying three hydroxy substituents at positions 7, 16 and 17 (the 7S,16R,17S-stereoisomer).
AA-861
D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors C471 - Enzyme Inhibitor > C1322 - Lipooxygenase Inhibitor Docebenone (AA 861) is a potent, selective and orally active 5-LO (5-lipoxygenase) inhibitor.
Lathosterol
Lathosterol is a cholesterol-like molecule. Serum Lathosterol concentration is an indicator of whole-body cholesterol synthesis. Lathosterol is a cholesterol-like molecule. Serum Lathosterol concentration is an indicator of whole-body cholesterol synthesis.
Leonurine
Leonurine is a trihydroxybenzoic acid. Leonurine is a natural product found in Leonotis leonurus and Leonurus sibiricus with data available. Leonurine is an alkaloid isolated from Leonurus artemisia, with anti-oxidative and anti-inflammatory. Leonurine is an alkaloid isolated from Leonurus artemisia, with anti-oxidative and anti-inflammatory.
Geranyl acetate
Geranyl acetate, an acyclic monoterpene ester derived from geraniol, is widely used in the cosmetics industry due to its pleasant scent[1]. Geranyl acetate can induces cell apoptosis[2]. Geranyl acetate has been reported in Cymbopogon martinii, Cymbopogon distans
Cognac oil
An octadecadienoic acid in which the two double bonds are at positions 9 and 12 and have Z (cis) stereochemistry. COVID info from PDB, Protein Data Bank, WikiPathways Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS
Biacalein
D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists > D011448 - Prostaglandin Antagonists D020011 - Protective Agents > D000975 - Antioxidants COVID info from PDB, Protein Data Bank D004791 - Enzyme Inhibitors Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Baicalein (5,6,7-Trihydroxyflavone) is a xanthine oxidase inhibitor with an IC50 value of 3.12 μM. Baicalein (5,6,7-Trihydroxyflavone) is a xanthine oxidase inhibitor with an IC50 value of 3.12 μM.
CHEBI:28113
15(S)-HPETE
D002317 - Cardiovascular Agents > D014662 - Vasoconstrictor Agents D004791 - Enzyme Inhibitors > D016859 - Lipoxygenase Inhibitors D009676 - Noxae > D016877 - Oxidants > D010545 - Peroxides The (S)-enantiomer of 15-HPETE. 15(S)-hydroperoxyeicosatetraenoic acid (15(S)-HPETE) is the corresponding hydroperoxide of 15(S)-HETE and undergoes homolytic decomposition to the DNA-reactive bifunctional electrophile 4-oxo-2(E)-nonenal, a precursor of heptanone-etheno-2-deoxyguanosine. Reactive oxygen species convert the omega-6 polyunsaturated fatty acid arachidonic acid into (15-HPETE); vitamin C mediates 15(S)-HPETE decomposition. 15(S)-HPETE initiates apoptosis in vascular smooth muscle cells. 15(S)-HPETE is a lipoxygenase metabolite that affects the expression of cell adhesion molecules (CAMs) involved in the adhesion of leukocytes and/or the accumulation of leukocytes in the vascular endothelium, these being the initial events in endothelial cell injury. 15(S)-HPETE induces a loss of cardiomyocytes membrane integrity. 15-(S)HPETE is a hydroperoxide that enhances the activity of the enzymes lipoxygenase [EC 1.13.11.12] and Na+, K+-ATPase [EC 3.6.3.9] of brain microvessels. Lipoxygenase(s) and Na+-K+-ATPase of brain microvessels may play a significant role in the occurrence of ischemic brain edema. (PMID: 15964853, 15723435, 8655602, 8595608, 2662983) [HMDB]
12(S)-HPETE
D006401 - Hematologic Agents > D010975 - Platelet Aggregation Inhibitors D002317 - Cardiovascular Agents > D014662 - Vasoconstrictor Agents The (S)-enantiomer of 12-HPETE.
Protodioscin
Protodioscin is a spirostanyl glycoside that consists of the trisaccharide alpha-L-Rha-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc attached to position 3 of 26-(beta-D-glucopyranosyloxy)-3beta,22-dihydroxyfurost-5-ene via a glycosidic linkage. Found in several plant species including yams, asparagus and funugreek. It has a role as a metabolite. It is a steroid saponin, a trisaccharide derivative, a beta-D-glucoside, a pentacyclic triterpenoid and a cyclic hemiketal. It is functionally related to a diosgenin. It derives from a hydride of a spirostan. Protodioscin is a natural product found in Dracaena draco, Borassus flabellifer, and other organisms with data available. See also: Fenugreek seed (part of). A spirostanyl glycoside that consists of the trisaccharide alpha-L-Rha-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc attached to position 3 of 26-(beta-D-glucopyranosyloxy)-3beta,22-dihydroxyfurost-5-ene via a glycosidic linkage. Found in several plant species including yams, asparagus and funugreek. Protodioscin, a major steroidal saponin in Trigonella foenum-graecum Linn., has been shown to exhibit multiple biological actions, such as anti-hyperlipidemia, anti-cancer, sexual effects and cardiovascular properties. Protodioscin, a major steroidal saponin in Trigonella foenum-graecum Linn., has been shown to exhibit multiple biological actions, such as anti-hyperlipidemia, anti-cancer, sexual effects and cardiovascular properties.
Doconexent
A docosahexaenoic acid having six cis-double bonds at positions 4, 7, 10, 13, 16 and 19. COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS Docosahexaenoic Acid (DHA) is an omega-3 fatty acid abundantly present brain and retina. It can be obtained directly from fish oil and maternal milk.
5-Methoxyindole-3-acetic acid
A member of the class of indole-3-acetic acids in which the hydrogen at position 5 of indole-3-acetic acid has been replaced by a methoxy group. D006133 - Growth Substances > D010937 - Plant Growth Regulators > D007210 - Indoleacetic Acids COVID info from PDB, Protein Data Bank Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS 5-Methoxyindole-3-acetic acid is a metabolite of Melatonin[1].
N-Acetylornithine
N-Acetylornithine is an intermediate in the enzymatic biosynthesis of the amino acid L-arginine from L-glutamate.
15-Oxo-ETE
An oxoicosatetraenoic acid having (5Z,8Z,11Z,13E) double bond stereochemistry, and an oxo group in position 15.
13(S)-HPODE
D009676 - Noxae > D016877 - Oxidants > D010545 - Peroxides The (S)-enantiomer of 13-HPODE
13(S)-HODE
An HODE (hydroxyoctadecadienoic acid) in which the double bonds are at positions 9 and 11 (E and Z geometry, respectively) and the hydroxy group is at position 13 (with S-configuration).
(4Z,7R,8E,10Z,12E,14E,17S,19Z)-7,16,17-trihydroxydocosa-4,8,10,12,14,19-hexaenoic acid
hepoxilin B3
A hepoxilin having (5Z,9E,14Z) double bond stereochemistry, a 10-hydroxy substituent and an (11S,12S)-epoxy group.
