1.14.99.1 5-hydroxytryptamine stimulates 438389 1.14.99.1 arachidonate - 716959 1.14.99.1 arachidonic acid exogenous, increases hPHS activity 715090 1.14.99.1 benzoquinone stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 cysteine stimulates 438389 1.14.99.1 dopamine - 438392 1.14.99.1 dopamine 3,4-dihydroxyphenylethylamine, stimulates 438389 1.14.99.1 ellagic acid at high concentration and in presence of cofactors inhibition, at low concentrations stimulation 438370 1.14.99.1 epinephrine - 438391, 438392 1.14.99.1 epinephrine stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 glutathione promotes prostaglandin H synthase-dependent formation of oxidative stress biomarkers malondialdehyde and 15(S)-8-iso-prostaglandin F2alpha 727520 1.14.99.1 hemin activates 438374 1.14.99.1 hydroperoxyeicosatetraenoic acid - 438371 1.14.99.1 hydroquinone - 438391 1.14.99.1 hydroquinone stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 indole stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 kynurenine stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 Melatonin - 438389 1.14.99.1 Melatonin stimulates 438375 1.14.99.1 additional information aqueous extracts of Chromoleana odorata, commonly used in traditional medicine as antiinflammatory drug against pains or as cataplasm to stop hemorrhage in Ivory Coast, the essential oil extracted from the fresh leaves activates the cyclooxygenase activity of the PGHS, overview 713706 1.14.99.1 additional information cyclooxygenase catalysis by prostaglandin H synthase-1 and -2 requires activation of the normally latent enzyme by peroxide-dependent generation of a free radical at Tyr385 (PGHS-1 numbering) in the cyclooxygenase active site. The Tyr385 radical has also been linked to self-inactivation processes that impose an ultimate limit on cyclooxygenase catalysis 659392 1.14.99.1 additional information hypoxia and glucose-free medium treatment synergistically increase PGHS-2 mRNA approximately 8fold 672839 1.14.99.1 additional information oxygen and glucose depivation induce PGHS-2 gene expression synergistically in neurons 672839 1.14.99.1 additional information stimulation of enzyme in crude extract by some amines 438392 1.14.99.1 additional information the enzyme is induced by arachidonic acid up to 7.5-fold within 6 h, it is also induced by protein kinase C activators 4beta-PMA and PGF2alpha, all activation effects are blocked by PKC inhibitors, regulation, overview, protein kinase C induces PTGS2 independently of PPARs, i.e. peroxisome-proliferator-activated receptors 684980 1.14.99.1 additional information USF proteins are involved in the trans-activation of the PGH-2 promoter in granulosa cells 659436 1.14.99.1 norepinephrine - 438392 1.14.99.1 Oestrogens weak stimulation 438389 1.14.99.1 peroxynitrite peroxidase activity, MS-analysis reveals that tyrosine 385 is a target for nitration by ONOO- only when heme is present 675273 1.14.99.1 phenylalanine stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 quinol stimulates 438389 1.14.99.1 reduced glutathione stimulates 438389 1.14.99.1 serotonin - 438391 1.14.99.1 serotonin stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 Tannic acid at high concentration and in presence of cofactors inhibition, at low concentrations stimulation 438370 1.14.99.1 Thyroid hormones weak stimulation 438389 1.14.99.1 thyrotropin tissue-specific stimulation in thyroid 438390 1.14.99.1 tryptophan stimulates conversion of prostaglandin G1 to H1 438375 1.14.99.1 tyrosine stimulates conversion of prostaglandin G1 to H1 438375