prostaglandin-i3 has been researched along with adrenic-acid* in 1 studies
1 other study(ies) available for prostaglandin-i3 and adrenic-acid
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Hydroperoxides produced by n-6 lipoxygenation of arachidonic and linoleic acids potentiate synthesis of prostacyclin related compounds.
In a previous paper we reported that arachidonic acid (20:4(n-6] strongly enhances the endothelial cell synthesis of prostaglandin I3 (PGI3) from eicosapentaenoic acid (20:5(n-3], in stimulating the cyclooxygenase rather than the prostacyclin synthase (Bordet et al. (1986) Biochem. Biophys. Res. Commun. 135, 403-410). In the present study, endothelial cell monolayers were co-incubated with exogenous 20:5(n-3) or docosatetraenoic acid (22:4(n-6], and n-6 lipoxygenase products of 20:4(n-6) or linoleic acid (18:2(n-6], namely 15-HPETE and 13-HPOD, respectively. Prostaglandins or dihomoprostaglandins were then measured by gas chromatography-mass spectrometry. Both hydroperoxides, up to 20 microM, stimulated the cyclooxygenation of 20:5(n-3) and 22:4(n-6), in particular the formation of PGI3 and dihomo-PGI2, respectively. Higher concentrations inhibited prostacyclin synthetase. In contrast, the reduced products of hydroperoxides, 15-HETE and 13-HOD, failed to stimulate these cyclooxygenations, 13-HPOD appeared more potent than 15-HPETE and the cyclooxygenation of 22:4(n-6) seemed to require higher amounts of hydroperoxides to be efficiently metabolized than 20:5(n-3). These data suggest that prostacyclin potential of endothelium might be enhanced by raising the peroxide tone. Topics: Arachidonic Acid; Arachidonic Acids; Cells, Cultured; Endothelium, Vascular; Epoprostenol; Erucic Acids; Fatty Acids, Unsaturated; Gas Chromatography-Mass Spectrometry; Humans; Kinetics; Leukotrienes; Linoleic Acid; Linoleic Acids; Lipid Peroxides; Lipoxygenase; Mass Spectrometry; Prostaglandins F; Umbilical Veins | 1988 |