16a-Hydroxyestrone
16a-Hydroxyestrone or 16alpha-hydroxyestrone (16α-OH-E1 or 16a OHE1), or hydroxyestrone, is an endogenous steroidal estrogen and a major metabolite of estrone and estradiol. 16a-hydroxyestrone belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. Thus, 16a-hydroxyestrone is considered to be a steroid molecule. 16a-hydroxyestrone is found in all vertebrates. Vertebrates, especially mammals, metabolizes estrogen into two major pathways and one minor. The two major pathways lead to 2-hydroxyestrone and 16a-hydroxyestrone (2-OHE1 and 16a OHE1 respectively). The minor pathway leads to 4-hydroxyestrone (4-OHE1). 2a-hydroxyestrone is considered to be the good metabolite (PMID: 8943806) as 2-hydroxyestrone does not stimulate cell growth and it blocks the action of stronger estrogens that may be carcinogenic. 16a-Hydroxyestrone, on the other hand, has a significantly stronger estrogenic activity, and studies show that it may increase the risk of breast cancer. The binding of 16a-hydroxyestrone to the estrogen receptor is reported to be covalent and irreversible (PMID: 3186693). A low urinary ratio of 2-hydroxyestrone to 16-alpha-hydroxyestrone is a strong predictor of breast cancer risk among women (PMID: 19502596). Estrone (also oestrone) is an estrogenic hormone secreted by the ovary. Its molecular formula is C18H22O2. estrone has a melting point of 254.5 degrees Celsius. estrone is one of the three estrogens, which also include estriol and estradiol. estrone is the least prevalent of the three hormones, estradiol being prevalent almost always in a female body, estriol being prevalent primarily during pregnancy. estrone sulfate is relevant to health and disease due to its conversion to estrone sulfate, a long-lived derivative of estrone. estrone sulfate acts as a pool of estrone which can be converted as needed to the more active estradiol. [HMDB] C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones
Thyroxine
Thyroxine (3,5,3‚Ä≤,5‚Ä≤-tetraiodothyronine) or T4 is one of two major hormones derived from the thyroid gland, the other being triiodothyronine (T3). The major form of thyroid hormone in the blood is thyroxine (T4), which has a longer half-life than T3. In humans, the ratio of T4 to T3 released into the blood is approximately 14:1. T4 is converted to the active T3 (three to four times more potent than T4) within cells by enzymes known as deiodinases (5‚Ä≤-iodinase). Thyroxine is synthesized via the iodination of tyrosines (monoiodotyrosine) and the coupling of iodotyrosines (diiodotyrosine) in the thyroglobulin. Iodine is critical to the synthesis of thyroxine and other thyroid hormones. Through a reaction with the enzyme thyroperoxidase, iodine is covalently bound to tyrosine residues found in the thyroglobulin protein, forming monoiodotyrosine (MIT) and diiodotyrosine (DIT). Linking two moieties of DIT produces thyroxine. Combining one molecule of MIT and one molecule of DIT produces triiodothyronine. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Iodide is actively absorbed from the bloodstream and concentrated in the thyroid follicles where thyroxine is produced. If there is a deficiency of dietary iodine, the thyroid enlarges in an attempt to trap more iodine, resulting in a condition called goitre. More specifically, the lack of thyroid hormones will lead to decreased negative feedback on the pituitary gland, leading to increased production of thyroid-stimulating hormone, which causes the thyroid to enlarge, leading to goitre. Thyroxine can be peripherally de-iodinated to form triiodothyronine which exerts a broad spectrum of stimulatory effects on cell metabolism. Thyroid hormones function via a well-studied set of nuclear receptors, termed the thyroid hormone receptors. They act on nearly every cell in the body. In particular, thyroid hormones act to increase the basal metabolic rate, affect protein synthesis, help regulate long bone growth (synergy with growth hormone) and neural maturation, and increase the bodys sensitivity to catecholamines (such as adrenaline) by permissiveness. The thyroid hormones are essential to proper development and differentiation of all cells of the human body. These hormones also regulate protein, fat, and carbohydrate metabolism, affecting how human cells use energetic compounds. They also stimulate vitamin metabolism. Numerous physiological and pathological stimuli influence thyroid hormone synthesis. Levothyroxine, a manufactured form of thyroxine, was the most prescribed medication in the United States with more than 114 million prescriptions. Thyroxine, one of the two major hormones secreted by the thyroid gland (the other is triiodothyronine). Thyroxine’s principal function is to stimulate the consumption of oxygen and thus the metabolism of all cells and tissues in the body. Thyroxine is formed by the molecular addition of iodine to the amino acid tyrosine while the latter is bound to the protein thyroglobulin. Excessive secretion of thyroxine in the body is known as hyperthyroidism, and the deficient secretion of it is called hypothyroidism. Thyroid hormones are any hormones produced and released by the thyroid gland, namely triiodothyronine (T3) and thyroxine (T4). They are tyrosine-based hormones that are primarily responsible for regulation of metabolism. T3 and T4 are partially composed of iodine, derived from food.[2] A deficiency of iodine leads to decreased production of T3 and T4, enlarges the thyroid tissue and will cause the disease known as simple goitre.[3] The major form of thyroid hormone in the blood is thyroxine (T4), whose half-life of around one week[4] is longer than that of T3.[5] In humans, the ratio of T4 to T3 released into the blood is approximately 14:1.[6] T4 is converted to the active T3 (three to four times more potent than T4) within cells by deiodinases (5′-deiodinase). These are further processed by decarboxylation and deiodination to produce iodothyronamine (T1a) and thyronamine (T0a). All three isoforms of the deiodinases are selenium-containing enzymes, thus dietary selenium is essential for T3 production. The thyroid hormone is one of the factors responsible for the modulation of energy expenditure. This is achieved through several mechanisms, such as mitochondrial biogenesis, adaptive thermogenesis, etc.[7] American chemist Edward Calvin Kendall was responsible for the isolation of thyroxine in 1915.[8] In 2020, levothyroxine, a manufactured form of thyroxine, was the second most commonly prescribed medication in the United States, with more than 98 million prescriptions.[9][10] Levothyroxine is on the World Health Organization's List of Essential Medicines.[11] (-)-Thyroxine. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=7488-70-2 (retrieved 2024-06-28) (CAS RN: 51-48-9). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0). D-Thyroxine (D-T4) is a thyroid hormone that can inhibit TSH secretion. D-Thyroxine can be used for the research of hypercholesterolemia[1][2]. L-Thyroxine (Levothyroxine; T4) is a synthetic hormone for the research of hypothyroidism. DIO enzymes convert biologically active thyroid hormone (Triiodothyronine,T3) from L-Thyroxine (T4)[1].
Valinomycin
D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents D049990 - Membrane Transport Modulators D007476 - Ionophores A twelve-membered cyclodepsipeptide composed of three repeating D-alpha-hydroxyisovaleryl-D-valyl-L-lactoyl-L-valyl units joined in sequence. An antibiotic found in several Streptomyces strains. C274 - Antineoplastic Agent > C186664 - Cytotoxic Chemotherapeutic Agent > C259 - Antineoplastic Antibiotic Valinomycin is a potassium-specific ionophore, the valinomycin-K+ complex can be incorporated into biological bilayer membranes with the hydrophobic surface of valinomycin, destroys the normal K+ gradient across the membrane, and as a result kills the cells, incorporating into liposomes can significantly reduces the cytotoxicity and enhances the targeting effect. Valinomycin exhibits antibiotic, antifungal, antiviral, antitumor and insecticidal efficacy, thus can be used for relevant research[1][2]. Valinomycin (NSC 122023), a cyclic depsipeptide antibiotic, act as a potassium selective ionophore. Valinomycin (NSC 122023) inhibits lymphocyte proliferation by its effects on the cell membrane, and induces apoptosis in CHO cells[1]. Valinomycin induces activation of PINK1 leading to Parkin Ser65 phosphorylation[2].
2-Hydroxyestradiol
2-Hydroxyestradiol (2-OHE2), also known as estra-1,3,5(10)-triene-2,3,17beta-triol, is an endogenous steroid, catechol estrogen. 2-Hydroxyestradiol belongs to the class of organic compounds known as estrogens and derivatives. These are steroids with a structure containing a 3-hydroxylated estrane. Thus, 2-hydroxyestradiol is considered to be a steroid molecule. It is a metabolite of estradiol, as well as a positional isomer of estriol. Transformation of estradiol to 2-hydroxyestradiol is a major metabolic pathway of estradiol in the liver. 2-Hydroxyestradiol is generated from estradiol via several cytochrome P450 enzymes. Specifically, CYP1A2 and CYP3A4 are the major enzymes catalyzing the 2-hydroxylation of estradiol. Conversion of estradiol into 2-hydroxyestradiol has been detected in the liver, uterus, breast, kidney, brain, and pituitary gland, as well as the placenta. 2-Hydroxyestradiol binds, with a low affinity, to estrogen receptors. 2-Hydroxyestradiol has approximately 7\\% and 11\\% of the affinity of estradiol at the estrogen receptors (ERs) ERalpha and ERbeta, respectively (PMID: 9048584). 2-Hydroxyestradiol is a catechol estrogen and in this regard bears some structural resemblance to the catecholamines dopamine, norepinephrine (noradrenaline), and epinephrine (adrenaline) (PMID: 447670). In accordance, 2-hydroxyestradiol has been found to interact with catecholamine systems. The steroid is known to compete with catecholamines for binding to catechol O-methyltransferase and tyrosine hydroxylase and to competitively inhibit these enzymes (PMID: 447670). Inactivity of COMT blocks inactivation of catechol hormones and catecholamine neurotransmitters. 2-Hydroxyestradiol is also reported to inhibit angiongensis and tumor cell growth (PMID: 9472688). 2-Hydroxyestradiol is generated from estradiol by a Cytochrome P450. 2-Hydroxyestradiol binds, with a low affinity, to estrogen receptors. It inhbits catechol-O-methyltransferase (COMT) activity. Inactivity of COMT blocks inactivation of catechol hormones and catecholamine neutransmitters. 2-Hydroxyestradiol is also reported to inhibit angiongensis and tumor cell growth (PMID: 9472688). [HMDB] C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones
Thiamcol
J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01B - Amphenicols > J01BA - Amphenicols D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents C254 - Anti-Infective Agent > C258 - Antibiotic C784 - Protein Synthesis Inhibitor
alpha-Zearalenol
Alpha-zearlenol is a nonsteroidal estrogen or mycoestrogen found in fungi belonging to the Fusarium genus including F. graminearum, F. culmorum, F. crookwellense, etc (PMID: 22095651), As a mycotoxin, alpha-zearalenol is a widely distributed compound that contaminates many crops, grains, and other commodities (PMID: 30830360). Alpha-zearalenol, is also a major hepatic metabolite of zearalenone (another mycotoxin). Zearalenone has two metabolites, alpha and beta zearalenol which are produced in the liver by 3α-hydroxisteroid dehydrogenase and 3β-hydroxisteroid dehydrogenase (PMID: 30830360). Like Alpha-zearlenol, zearalenone or F-2 mycotoxin is produced by certain Fusarium species. It causes infertility, abortion and other breeding problems in swine. Alpha-zearlenol is also produced synthetically and sold as Zeranol, which is used as an anabolic agent for cattle. Alpha-zearlenol exhibits strong growth-promoting properties, but its sale is restricted in Europe (PMID: 22095651). Alpha-zearalenol has three to four times the biological activity of zearalenone. Alpha-zearlenol contains a lactone ring in its structure and is structurally analogous to estrogen, thus it can bind to estrogen receptors, and causes hepatotoxic, hematotoxic, immunotoxic, genotoxic, teratogenic and carcinogenic effects on different animal species (PMID: 17045381).
Dihydrolipoamide
Dihydrolipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG ID C00579). It is converted to lipoamide via the enzyme dihydrolipoamide dehydrogenase [EC:1.8.1.4]. Dihydrolipoamide is also a substrate of enzyme Acyltransferases [EC 2.3.1.-]. (KEGG) [HMDB]. Dihydrolipoamide is found in many foods, some of which are enokitake, mugwort, welsh onion, and tea. Dihydrolipoamide is an intermediate in glycolysis/gluconeogenesis, citrate cycle (TCA cycle), alanine, aspartate and pyruvate metabolism, and valine, leucine and isoleucine degradation (KEGG ID C00579). It is converted to lipoamide via the enzyme dihydrolipoamide dehydrogenase [EC:1.8.1.4]. Dihydrolipoamide is also a substrate of enzyme Acyltransferases [EC 2.3.1.-]. (KEGG).
Cyclohexaneacetic acid, 4-[4-[6-(aminocarbonyl)-3,5-dimethyl-2-pyrazinyl]phenyl]-, trans-
Rutamycin
An oligomycin with formula C44H72O11 that is oligomycin A in which the methyl substituent adjacent to the spirocyclic centre has been replaced by a hydrogen. D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D009840 - Oligomycins C784 - Protein Synthesis Inhibitor > C261 - Macrolide Antibiotic D000890 - Anti-Infective Agents > D000935 - Antifungal Agents D004791 - Enzyme Inhibitors > D014475 - Uncoupling Agents C254 - Anti-Infective Agent > C258 - Antibiotic Same as: D05778
Cyclothiazide
As a diuretic, cyclothiazide inhibits active chloride reabsorption at the early distal tubule via the Na-Cl cotransporter, resulting in an increase in the excretion of sodium, chloride, and water. Thiazides like cyclothiazide also inhibit sodium ion transport across the renal tubular epithelium through binding to the thiazide sensitive sodium-chloride transporter. This results in an increase in potassium excretion via the sodium-potassium exchange mechanism. The antihypertensive mechanism of cyclothiazide is less well understood although it may be mediated through its action on carbonic anhydrases in the smooth muscle or through its action on the large-conductance calcium-activated potassium (KCa) channel, also found in the smooth muscle. Cyclothiazide is indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. It is also indicated in the management of hypertension either as the sole therapeutic agent or to enhance the effectiveness of other antihypertensive drugs in the more severe forms of hypertension. C - Cardiovascular system > C03 - Diuretics > C03A - Low-ceiling diuretics, thiazides > C03AA - Thiazides, plain C78275 - Agent Affecting Blood or Body Fluid > C448 - Diuretic > C49185 - Thiazide Diuretic D002317 - Cardiovascular Agents > D000959 - Antihypertensive Agents D002317 - Cardiovascular Agents > D045283 - Natriuretic Agents D045283 - Natriuretic Agents > D004232 - Diuretics Same as: D01256 Cyclothiazide, a positive allosteric modulator of AMPA receptors, is used frequently to block the desensitization of both native and heterologously expressed AMPA receptors. Cyclothiazide is known to produce a fast inhibition of AMPA receptor desensitization and a much slower potentiation of the AMPA current[1].
(S)-ATPA
A non-proteinogenic L-alpha-amino acid that is L-alanine in which one of the methyl hydrogens is replaced by a 5-tert-butyl-3-hydroxy-isooxazol-4-yl group.
BzATP
D019995 - Laboratory Chemicals > D007202 - Indicators and Reagents > D000345 - Affinity Labels D006401 - Hematologic Agents > D010975 - Platelet Aggregation Inhibitors
4-Hydroxyestradiol
4-Hydroxyestradiol is an oncogenic catechol estrogen produced by metabolism of Estrogen. D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones A human metabolite taken as a putative food compound of mammalian origin [HMDB]
16b-Hydroxyestrone
16b-Hydroxyestrone is an aromatized C18 steroid with a 3-hydroxyl group and a 17-ketone, a major mammalian estrogen. It is converted from androstenedione directly, or from testosterone via estradiol. In humans, it is produced primarily by the cyclic ovaries, placenta, and the adipose tissue of men and postmenopausal women. An aromatized C18 steroid with a 3-hydroxyl group and a 17-ketone, a major mammalian estrogen. It is converted from androstenedione directly, or from testosterone via estradiol. In humans, it is produced primarily by the cyclic ovaries, placenta, and the adipose tissue of men and postmenopausal women. [HMDB] C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones
(1R,4E,5'R,6R,6'R,7S,8S,10S,11S,12R,14S,15R,16S,18E,20E,22S,25R,27S,29S)-22-Ethyl-7,11,14,15-tetrahydroxy-6'-(2-hydroxypropyl)-5',6,8,10,12,14,16,29-octamethylspiro[2,26-dioxabicyclo[23.3.1]nonacosa-4,18,20-triene-27,2'-oxane]-3,9,13-trione
thiamphenicol
J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01B - Amphenicols > J01BA - Amphenicols D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents C254 - Anti-Infective Agent > C258 - Antibiotic C784 - Protein Synthesis Inhibitor
2-Hydroxyestradiol
C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones
cyclothiazide
C - Cardiovascular system > C03 - Diuretics > C03A - Low-ceiling diuretics, thiazides > C03AA - Thiazides, plain C78275 - Agent Affecting Blood or Body Fluid > C448 - Diuretic > C49185 - Thiazide Diuretic D002317 - Cardiovascular Agents > D000959 - Antihypertensive Agents D002317 - Cardiovascular Agents > D045283 - Natriuretic Agents D045283 - Natriuretic Agents > D004232 - Diuretics Same as: D01256 Cyclothiazide, a positive allosteric modulator of AMPA receptors, is used frequently to block the desensitization of both native and heterologously expressed AMPA receptors. Cyclothiazide is known to produce a fast inhibition of AMPA receptor desensitization and a much slower potentiation of the AMPA current[1].
ST 18:3;O3
A 4-hydroxy steroid that consists of 17beta-estradiol having an additional hydroxy group at position 4. D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen
ST 18:4;O3
D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D020011 - Protective Agents > D016588 - Anticarcinogenic Agents D000970 - Antineoplastic Agents 4-Hydroxyestrone (4-OHE1), an estrone metabolite, has strong neuroprotective effect against oxidative neurotoxicity. 4-Hydroxyestrone increases cytoplasmic translocation of p53 resulting from SIRT1-mediated deacetylation of p53. 4-Hydroxyestrone has little estrogenic activity[1].
Levothyroxine
H - Systemic hormonal preparations, excl. sex hormones and insulins > H03 - Thyroid therapy > H03A - Thyroid preparations > H03AA - Thyroid hormones D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1553 - Thyroid Agent COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS The thyronamines function via some unknown mechanism to inhibit neuronal activity; this plays an important role in the hibernation cycles of mammals. One effect of administering the thyronamines is a severe drop in body temperature.; Iodide is actively absorbed from the bloodstream and concentrated in the thyroid follicles. (If there is a deficiency of dietary iodine, the thyroid enlarges in an attempt to trap more iodine, resulting in goitre.) Via a reaction with the enzyme thyroperoxidase, iodine is covalently bound to tyrosine residues in the thyroglobulin molecules, forming monoiodotyrosine (MIT) and diiodotyrosine (DIT). Linking two moieties of DIT produces thyroxine. Combining one particle of MIT and one particle of DIT produces triiodothyronine.; Both T3 and T4 are used to treat thyroid hormone deficiency (hypothyroidism). They are both absorbed well by the gut, so can be given orally. Levothyroxine, the most commonly used synthetic thyroxine form, is a stereoisomer of physiological thyroxine, which is metabolized more slowly and hence usually only needs once-daily administration. Natural desiccated thyroid hormones, which are derived from pig thyroid glands, are a "natural" hypothyroid treatment containing 20\\\% T3 and traces of T2, T1 and calcitonin.; this plays an important role in the hibernation cycles of mammals. One effect of administering the thyronamines is a severe drop in body temperature.; The major hormone derived from the thyroid gland. Thyroxine is synthesized via the iodination of tyrosines (monoiodotyrosine) and the coupling of iodotyrosines (diiodotyrosine) in the thyroglobulin. Thyroxine is released from thyroglobulin by proteolysis and secreted into the blood. Thyroxine is peripherally deiodinated to form triiodothyronine which exerts a broad spectrum of stimulatory effects on cell metabolism.; The thyronamines function via some unknown mechanism to inhibit neuronal activity [HMDB] L-Thyroxine (Levothyroxine; T4) is a synthetic hormone for the research of hypothyroidism. DIO enzymes convert biologically active thyroid hormone (Triiodothyronine,T3) from L-Thyroxine (T4)[1].
Oligomycin D
D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D009840 - Oligomycins C784 - Protein Synthesis Inhibitor > C261 - Macrolide Antibiotic D000890 - Anti-Infective Agents > D000935 - Antifungal Agents D004791 - Enzyme Inhibitors > D014475 - Uncoupling Agents C254 - Anti-Infective Agent > C258 - Antibiotic
16α-Hydroxyestrone
C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C483 - Therapeutic Estrogen D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006728 - Hormones The 16alpha-hydroxy derivative of estrone; a minor estrogen metabolite.
