1.0 2011-09-21 00:24:30 UTC 2015-07-21 06:57:30 UTC FDB023088 Prostaglandin B1 Prostaglandin B1 (PGB1) is a metabolite of PGE1. PGE1 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). PGB1does not inhibit phospholipase activity, but oligomers of PGB1 (PGBx) extracted from human neutrophils inhibit human phospholipases A2 in vitro and in situ in a dose-dependent manner; these oligomers inhibit arachidonic acid mobilization in human neutrophils and endothelial cells. One mechanism for the pharmacological effects of PGBx may be inhibition of cell-associated and extracellular phospholipase A2. PGB1 has the ability to enhance peripheral vascular resistance and elevate blood pressure. The effect is not central in origin and apparently is not the result of changes in cholinergic or alpha-adrenoceptor sensitivity or changes in vascular smooth muscle susceptibility per se. PGB1 blocks S-phase DNA synthesis; inhibition of DNA synthesis does not appear to require elevated levels of cAMP. (PMID: 7667505, 1477202, 2129000, 2597672, 6635328) 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 signaling pathways. [HMDB] (13E,15S)-15-hydroxy-9-oxoprosta-8(12),13-dien-1-oate (13E,15S)-15-hydroxy-9-oxoprosta-8(12),13-dien-1-oic acid 9-oxo-15S-hydroxy-8(12),13E-prostadienoate 9-oxo-15S-hydroxy-8(12),13E-prostadienoic acid PGB1 Prostaglandin-B1 C20H32O4 336.4657 336.230059512 7-{2-[(1E,3S)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopent-1-en-1-yl}heptanoic acid prostaglandin-B1 13345-51-2 CCCCC[C@H](O)\C=C\C1=C(CCCCCCC(O)=O)C(=O)CC1 InChI=1S/C20H32O4/c1-2-3-6-9-17(21)14-12-16-13-15-19(22)18(16)10-7-4-5-8-11-20(23)24/h12,14,17,21H,2-11,13,15H2,1H3,(H,23,24)/b14-12+/t17-/m0/s1 YBHMPNRDOVPQIN-VSOYFRJCSA-N belongs to the class of organic compounds known as prostaglandins and related compounds. These are unsaturated carboxylic acids consisting of a 20 carbon skeleton that also contains a five member ring, and are based upon the fatty acid arachidonic acid. Prostaglandins and related compounds Organic compounds Lipids and lipid-like molecules Fatty Acyls Eicosanoids Aliphatic homomonocyclic compounds Carboxylic acids Cyclic ketones Fatty alcohols Hydrocarbon derivatives Hydroxy fatty acids Long-chain fatty acids Monocarboxylic acids and derivatives Organic oxides Secondary alcohols Alcohol Aliphatic homomonocyclic compound Carbonyl group Carboxylic acid Carboxylic acid derivative Cyclic ketone Fatty alcohol Hydrocarbon derivative Hydroxy fatty acid Ketone Long-chain fatty acid Monocarboxylic acid or derivatives Organic oxide Organic oxygen compound Organooxygen compound Prostaglandin skeleton Secondary alcohol Prostaglandins Prostaglandins prostaglandins B Solid logp 3.99 ALOGPS logs -4.38 ALOGPS solubility 1.39e-02 g/l ALOGPS logp 4.55 ChemAxon pka_strongest_acidic 4.3 ChemAxon pka_strongest_basic -1.6 ChemAxon iupac 7-{2-[(1E,3S)-3-hydroxyoct-1-en-1-yl]-5-oxocyclopent-1-en-1-yl}heptanoic acid ChemAxon average_mass 336.4657 ChemAxon mono_mass 336.230059512 ChemAxon smiles CCCCC[C@H](O)\C=C\C1=C(CCCCCCC(O)=O)C(=O)CC1 ChemAxon formula C20H32O4 ChemAxon inchi InChI=1S/C20H32O4/c1-2-3-6-9-17(21)14-12-16-13-15-19(22)18(16)10-7-4-5-8-11-20(23)24/h12,14,17,21H,2-11,13,15H2,1H3,(H,23,24)/b14-12+/t17-/m0/s1 ChemAxon inchikey YBHMPNRDOVPQIN-VSOYFRJCSA-N ChemAxon polar_surface_area 74.6 ChemAxon refractivity 97.49 ChemAxon polarizability 40.72 ChemAxon rotatable_bond_count 13 ChemAxon acceptor_count 4 ChemAxon donor_count 2 ChemAxon physiological_charge -1 ChemAxon formal_charge 0 ChemAxon Specdb::CMs 10369 Specdb::CMs 38505 Specdb::CMs 164251 Specdb::MsMs 288874 Specdb::MsMs 288875 Specdb::MsMs 288876 Specdb::MsMs 328135 Specdb::MsMs 328136 Specdb::MsMs 328137 Specdb::MsMs 2446921 Specdb::MsMs 2446922 Specdb::MsMs 2446923 Specdb::MsMs 2518338 Specdb::MsMs 2518339 Specdb::MsMs 2518340 HMDB02982 27624 #<Reference:0x000055ce30f26418> #<Reference:0x000055ce30f26260> #<Reference:0x000055ce30f26030> #<Reference:0x000055ce30f25e78> #<Reference:0x000055ce30f25cc0> Anatidae Type 1 specific Anatidae 8830 Beefalo Type 1 specific Bos taurus X Bison bison 297284 Bison Type 1 specific Bison bison 9901 Buffalo Type 1 specific Bubalus bubalis 89462 Cattle (Beef, Veal) Type 1 specific Bos taurus 9913 Chicken Type 1 specific Gallus gallus 9031 Columbidae (Dove, Pigeon) Type 1 specific Columbidae 8930 Deer Type 1 specific Cervidae 9850 Domestic goat Type 1 specific Capra aegagrus hircus 9925 Domestic pig Type 1 specific Sus scrofa domestica 9825 Elk Type 1 specific Cervus canadensis 1574408 Emu Type 1 specific Dromaius novaehollandiae 8790 European rabbit Type 1 specific Oryctolagus 9984 Greylag goose Type 1 specific Anser anser 8843 Guinea hen Type 1 specific Numida meleagris 8996 Horse Type 1 specific Equus caballus 9796 Mallard duck Type 1 specific Anas platyrhynchos 8839 Mountain hare Type 1 specific Lepus timidus 62621 Mule deer Type 1 specific Odocoileus 9871 Ostrich Type 1 specific Struthio camelus 8801 Pheasant Type 1 specific Phasianus colchicus 9054 Quail Type 1 specific Phasianidae 9005 Rabbit Type 1 specific Leporidae 9979 Rock ptarmigan Type 1 specific Lagopus muta 64668 Sheep (Mutton, Lamb) Type 1 specific Ovis aries 9940 Squab Type 1 specific Columba 8931 Turkey Type 1 specific Meleagris gallopavo 9103 Velvet duck Type 1 specific Melanitta fusca 371864 Wild boar Type 1 specific Sus scrofa 9823