Gene Association: RPL18A

UniProt Search: RPL18A (PROTEIN_CODING)
Function Description: ribosomal protein L18a

found 29 associated metabolites with current gene based on the text mining result from the pubmed database.

Mezerein

2,4-Pentadienoic acid, 5-phenyl-, (2S,3aR,3bS,3cS,4aR,5S,5aS,8aR,8bR,9R,10R,10aS)-3a,3b,3c,4a,5,5a,8a,9,10,10a-decahydro-5,5a-dihydroxy-4a-(hydroxymethyl)-7,9-dimethyl-10a-(1-methylethenyl)-6-oxo-2-phenyl-6H-2,8b-epoxyoxireno(6,7)azulene(5,4-e)-1,3-benzodioxol-10-yl ester, (2E,4E)-

C38H38O10 (654.2465)


Crystals or white powder. (NTP, 1992) Mezerein is a diterpenoid. D009676 - Noxae > D002273 - Carcinogens D000970 - Antineoplastic Agents

   

Montelukast

1-[[[(1R)-1-[3-(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]-methyl]-cyclopropaneacetic acid, monosodium salt

C35H36ClNO3S (585.2104)


Montelukast is a leukotriene receptor antagonist (LTRA) used for the maintenance treatment of asthma and to relieve symptoms of seasonal allergies. It is usually administered orally. Montelukast blocks the action of leukotriene D4 on the cysteinyl leukotriene receptor CysLT1 in the lungs and bronchial tubes by binding to it. This reduces the bronchoconstriction otherwise caused by the leukotriene, and results in less inflammation. Because of its method of operation, it is not useful for the treatment of acute asthma attacks. Again because of its very specific locus of operation, it does not interact with other allergy medications such as theophylline. Montelukast is marketed in United States and many other countries by Merck & Co. with the brand name Singulair. It is available as oral tablets, chewable tablets, and oral granules. In India and other countries, it is also marketed under the brand name Montair®, produced by Indian company Cipla. R - Respiratory system > R03 - Drugs for obstructive airway diseases > R03D - Other systemic drugs for obstructive airway diseases > R03DC - Leukotriene receptor antagonists D019141 - Respiratory System Agents > D018927 - Anti-Asthmatic Agents > D020024 - Leukotriene Antagonists D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists D065693 - Cytochrome P-450 Enzyme Inducers > D065694 - Cytochrome P-450 CYP1A2 Inducers COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials C78273 - Agent Affecting Respiratory System > C29712 - Anti-asthmatic Agent Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS

   

Oxymetazoline

3-[(4,5-Dihydro-1H-imidazol-2-yl)methyl]-6-(1,1-dimethylethyl)-2,4-dimethylphenol

C16H24N2O (260.1889)


Oxymetazoline is only found in individuals that have used or taken this drug. It is a direct acting sympathomimetic used as a vasoconstrictor to relieve nasal congestion. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1251)Oxymetazoline is a direct acting sympathomimetic amine, which acts on alpha-adrenergic receptors in the arterioles of the conjunctiva and nasal mucosa. It produces vasoconstriction, resulting in decreased conjunctival congestion in ophthalmic. In nasal it produces constriction, resulting in decreased blood flow and decreased nasal congestion. R - Respiratory system > R01 - Nasal preparations > R01A - Decongestants and other nasal preparations for topical use > R01AB - Sympathomimetics, combinations excl. corticosteroids R - Respiratory system > R01 - Nasal preparations > R01A - Decongestants and other nasal preparations for topical use > R01AA - Sympathomimetics, plain S - Sensory organs > S01 - Ophthalmologicals > S01G - Decongestants and antiallergics > S01GA - Sympathomimetics used as decongestants D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D013566 - Sympathomimetics C78272 - Agent Affecting Nervous System > C29747 - Adrenergic Agent > C87053 - Adrenergic Agonist D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents > D000322 - Adrenergic Agonists D019141 - Respiratory System Agents > D014663 - Nasal Decongestants D002317 - Cardiovascular Agents > D014662 - Vasoconstrictor Agents D - Dermatologicals

   

Mometasone furoate

Mometasone furoate

C27H30Cl2O6 (520.1419)


C147908 - Hormone Therapy Agent > C548 - Therapeutic Hormone > C1636 - Therapeutic Steroid Hormone C29629 - Combination Medication > C29639 - Topical Preparation > C29505 - Topical Corticosteroid C308 - Immunotherapeutic Agent > C574 - Immunosuppressant > C211 - Therapeutic Corticosteroid COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials D000893 - Anti-Inflammatory Agents D018926 - Anti-Allergic Agents D003879 - Dermatologic Agents Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS CONFIDENCE standard compound; INTERNAL_ID 2834

   

15-HETE

15-Hydroxy-5,8,11,13-eicosatetraenoic acid, (S-(e,Z,Z,Z))-isomer

C20H32O3 (320.2351)


15-HETE is a hydroxyeicosatetraenoic acid. Hydroxyeicosatetraenoic acids (HETEs) are formed by the 5-, 12-, and 15-lipoxygenase (LO) pathways. The 5- and 12-LO products are mainly proinflammatory in the skin whereas the main 15-LO product 15-HETE has antiinflammatory capacities. In vitro, 15-HETE has been shown to inhibit LTB4 formation, 12-HETE formation, and specifically inhibits the neutrophil chemotactic effect of LTB4. The inhibition of LTB4 formation is probably due to modulation of the 5-LO because no changes in PGE2 formation have been determined. In vivo, 15-HETE inhibits LTB4-induced erythema and edema, and reduces LTB4 in the synovial fluid of carragheenan-induced experimental arthritis in dogs. 15-HETE also has some immunomodulatory effects. It inhibits the mixed lymphocyte reaction, induces generation of murine cytotoxic suppressor T cells, and it decreases interferon production by murine lymphoma cells. Furthermore, IL-4 and IL-13 have recently been shown to be potent activators of the 15-LO in mononuclear cells (PMID: 11104340). 15(S)-HETE is found to be associated with Zellweger syndrome, which is an inborn error of metabolism. 15(S)-HETE is a hydroxyeicosatetraenoic acid. Hydroxyeicosatetraenoic acids (HETEs) are formed by the 5-, 12- and 15-lipoxygenase (LO) pathways. 5- and 12-LO products are mainly proinflammatory in the skin whereas the main 15-LO product 15-HETE has antiinflammatory capacities. In vitro 15-HETE has been shown to inhibit LTB4 formation, 12-HETE formation and specifically inhibits the neutrophil chemotactic effect of LTB4. The inhibition of LTB4 formation is probably due to modulation of the 5-LO because no changes in PGE2 formation have been determined. In vivo, 15-HETE inhibits LTB4-induced erythema and edema, and reduces LTB4 in the synovial fluid of carragheenan-induced experimental arthritis in dogs. 15-HETE has also some immunomodulatory effects. It inhibits the mixed lymphocyte reaction, induces generation of murine cytotoxic suppressor T cells, and it decreases interferon production by murine lymphoma cells. Furthermore, IL-4 and IL-13 have recently been shown to be potent activators of the 15-LO in mononuclear cells. (PMID: 11104340) [HMDB] 15(S)-HETE. CAS Common Chemistry. CAS, a division of the American Chemical Society, n.d. https://commonchemistry.cas.org/detail?cas_rn=54845-95-3 (retrieved 2024-07-10) (CAS RN: 54845-95-3). Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

   

Leukotriene B4

5S,12R-dihydroxy-6Z,8E,10E,14Z-eicosatetraenoic acid

C20H32O4 (336.23)


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 D4

(5S,6R,7E,9E,11Z,14Z)-6-{[(2R)-2-amino-2-[(carboxymethyl)carbamoyl]ethyl]sulfanyl}-5-hydroxyicosa-7,9,11,14-tetraenoic acid

C25H40N2O6S (496.2607)


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

(7E,9E,11Z,13E)-(5S,6R,15S)-5,6,15-Trihydroxyicosa-7,9,11,13-tetraenoic acid

C20H32O5 (352.225)


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

   

Resolvin D1

(4Z,7S,9E,11E,13Z,15E,17S,19Z)-7,8,17-trihydroxydocosa-4,9,11,13,15,19-hexaenoic acid

C22H32O5 (376.225)


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).

   

Presqualene diphosphate

[({[(1S,2S,3S)-2-[(3E)-4,8-dimethylnona-3,7-dien-1-yl]-2-methyl-3-[(1E,5E)-2,6,10-trimethylundeca-1,5,9-trien-1-yl]cyclopropyl]methoxy}(hydroxy)phosphoryl)oxy]phosphonic acid

C30H52O7P2 (586.3188)


Presqualene diphosphate is an intermediate in the biosynthesis of Terpenoid. It is a substrate for Farnesyl-diphosphate farnesyltransferase. [HMDB]. Presqualene diphosphate is found in many foods, some of which are soft-necked garlic, pomes, roman camomile, and white cabbage. Presqualene diphosphate is an intermediate in the biosynthesis of Terpenoid. It is a substrate for Farnesyl-diphosphate farnesyltransferase.

   

Lipoxin B4

(5S,14R,6E,8Z,10E,12E,15S)-5,14,15-Trihydroxy-6,8,10,12-eicosatetraenoic acid

C20H32O5 (352.225)


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

   

Cefpodoxime

(6R,7R)-7-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)acetyl]amino}-3-(methoxymethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

C15H17N5O6S2 (427.062)


Cefpodoxime is an oral third generation cephalosporin antibiotic. It is active against most Gram positive and Gram negative bacteria. It is commonly used to treat acute otitis media, pharyngitis, and sinusitis. Cefpodoxime proxetil is a prodrug which is absorbed and de-esterified by the intestinal mucosa to Cefpodoxime. J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01D - Other beta-lactam antibacterials > J01DD - Third-generation cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D002511 - Cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D047090 - beta-Lactams D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D007769 - Lactams C254 - Anti-Infective Agent > C258 - Antibiotic > C260 - Beta-Lactam Antibiotic

   

Ceftibuten

(6R,7R)-7-{[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-4-carboxybut-2-enoyl]amino}-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

C15H14N4O6S2 (410.0355)


Ceftibuten is only found in individuals that have used or taken this drug. It is a third-generation cephalosporin antibiotic. It is an orally-administered agent. Cefalexin is used to treat acute bacterial exacerbations of chronic bronchitis (ABECB), acute bacterial otitis media, pharyngitis, and tonsilitis.Ceftibuten exerts its bactericidal action by binding to essential target proteins of the bacterial cell wall. This binding leads to inhibition of cell-wall synthesis. J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01D - Other beta-lactam antibacterials > J01DD - Third-generation cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D002511 - Cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D047090 - beta-Lactams D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D007769 - Lactams C254 - Anti-Infective Agent > C258 - Antibiotic > C260 - Beta-Lactam Antibiotic

   

Leukotriene B4

(6Z,8E,10E,14Z)-(5S,12R)-5,12-Dihydroxyeicosa-6,8,10,14-tetraenoic acid

C20H32O4 (336.23)


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 ...

   

15-Hydroxy-5,8,11,13-eicosatetraenoic acid

15-Hydroxy-5,8,11,13-eicosatetraenoic acid, (S-(e,Z,Z,Z))-isomer

C20H32O3 (320.2351)


   

7,8,17-trihydroxy-4,9,11,13,15,19-docosahexaenoic acid

7,8,17-Trihydroxy-4,9,11,13,15,19-docosahexaenoic acid

C22H32O5 (376.225)


   

Epi-Lipoxin A4

5,6,15-trihydroxyicosa-7,9,11,13-tetraenoic acid

C20H32O5 (352.225)


   

mezerein

6,7-dihydroxy-8-(hydroxymethyl)-4,18-dimethyl-5-oxo-14-phenyl-16-(prop-1-en-2-yl)-9,13,15,19-tetraoxahexacyclo[12.4.1.0^{1,11}.0^{2,6}.0^{8,10}.0^{12,16}]nonadec-3-en-17-yl 5-phenylpenta-2,4-dienoate

C38H38O10 (654.2465)


   

Lipoxin A4

5S,6R,15S-trihydroxy-7E,9E,11Z,13E-eicosatetraenoic acid

C20H32O5 (352.225)


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

   

Montelukast

Montelukast

C35H36ClNO3S (585.2104)


R - Respiratory system > R03 - Drugs for obstructive airway diseases > R03D - Other systemic drugs for obstructive airway diseases > R03DC - Leukotriene receptor antagonists D019141 - Respiratory System Agents > D018927 - Anti-Asthmatic Agents > D020024 - Leukotriene Antagonists D006730 - Hormones, Hormone Substitutes, and Hormone Antagonists > D006727 - Hormone Antagonists D065693 - Cytochrome P-450 Enzyme Inducers > D065694 - Cytochrome P-450 CYP1A2 Inducers COVID info from clinicaltrial, clinicaltrials, clinical trial, clinical trials C78273 - Agent Affecting Respiratory System > C29712 - Anti-asthmatic Agent Corona-virus Coronavirus SARS-CoV-2 COVID-19 SARS-CoV COVID19 SARS2 SARS CONFIDENCE standard compound; INTERNAL_ID 2745

   

Resolvin D1

7S,8R,17S-trihydroxy-4Z,9E,11E,13Z,15E,19Z-docosahexaenoic acid

C22H32O5 (376.225)


   

Leukotriene D4

5S-hydroxy-6R-(S-cysteinylglycinyl)-7E,9E,11E,14Z-eicosatetraenoic acid

C25H40N2O6S (496.2607)


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).

   

lipoxin B4

5S,14R,15S-trihydroxy-6E,8Z,10E,12E-eicosatetraenoic acid

C20H32O5 (352.225)


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

   

Presqualene diphosphate

Presqualene diphosphate

C30H52O7P2 (586.3188)


A triterpenyl phosphate that is presqualene in which the hydroxy hydrogen has been replaced by a diphosphate group.

   

15-Hydroxy-5,8,11,13-eicosatetraenoic acid

15-Hydroxy-5,8,11,13-eicosatetraenoic acid, (S-(e,Z,Z,Z))-isomer

C20H32O3 (320.2351)


15-Hydroxy-5,8,11,13-eicosatetraenoic acid, also known as 15-hete, is a member of the class of compounds known as hydroxyeicosatetraenoic acids. Hydroxyeicosatetraenoic acids are eicosanoic acids with an attached hydroxyl group and four CC double bonds. 15-Hydroxy-5,8,11,13-eicosatetraenoic acid is practically insoluble (in water) and a weakly acidic compound (based on its pKa).

   

oxymetazoline

oxymetazoline

C16H24N2O (260.1889)


R - Respiratory system > R01 - Nasal preparations > R01A - Decongestants and other nasal preparations for topical use > R01AB - Sympathomimetics, combinations excl. corticosteroids R - Respiratory system > R01 - Nasal preparations > R01A - Decongestants and other nasal preparations for topical use > R01AA - Sympathomimetics, plain S - Sensory organs > S01 - Ophthalmologicals > S01G - Decongestants and antiallergics > S01GA - Sympathomimetics used as decongestants D018373 - Peripheral Nervous System Agents > D001337 - Autonomic Agents > D013566 - Sympathomimetics C78272 - Agent Affecting Nervous System > C29747 - Adrenergic Agent > C87053 - Adrenergic Agonist D018377 - Neurotransmitter Agents > D018663 - Adrenergic Agents > D000322 - Adrenergic Agonists D019141 - Respiratory System Agents > D014663 - Nasal Decongestants D002317 - Cardiovascular Agents > D014662 - Vasoconstrictor Agents D - Dermatologicals

   

Icomucret

15(S)-HETE

C20H32O3 (320.2351)


An optically active form of 15-HETE having 15(S)-configuration.. C78283 - Agent Affecting Organs of Special Senses

   

Ceftibuten

Ceftibuten

C15H14N4O6S2 (410.0355)


A third-generation cephalosporin antibiotic with a [(2Z)-2-(2-amino-1,3-thiazol-4-yl)-4-carboxybut-2-enoyl]amino substituent at the 7 position of the cephem skeleton. An orally-administered agent, ceftibuten is used as the dihydrate to treat urinary-tract and respiratory-tract infections. J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01D - Other beta-lactam antibacterials > J01DD - Third-generation cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D002511 - Cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D047090 - beta-Lactams D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D007769 - Lactams C254 - Anti-Infective Agent > C258 - Antibiotic > C260 - Beta-Lactam Antibiotic

   

CEFPODOXIME

CEFPODOXIME

C15H17N5O6S2 (427.062)


A third-generation cephalosporin antibiotic with methoxymethyl and (2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-(methoxyimino)acetamino substituents at positions 3 and 7, respectively, of the cephem skeleton. Given by mouth as its proxetil ester prodrug, it is used to treat acute otitis media, pharyngitis, and sinusitis. J - Antiinfectives for systemic use > J01 - Antibacterials for systemic use > J01D - Other beta-lactam antibacterials > J01DD - Third-generation cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D002511 - Cephalosporins D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D047090 - beta-Lactams D000890 - Anti-Infective Agents > D000900 - Anti-Bacterial Agents > D007769 - Lactams C254 - Anti-Infective Agent > C258 - Antibiotic > C260 - Beta-Lactam Antibiotic