Eicosanoid metabolism in cerebromicrovascular endothelium
- 1 January 1988
- journal article
- research article
- Published by American Physiological Society in American Journal of Physiology-Cell Physiology
- Vol. 254 (1), C37-C44
- https://doi.org/10.1152/ajpcell.1988.254.1.c37
Abstract
Cultured murine cerebral microvessel endothelia produce predominantly prostacyclin and prostaglandin (PG) E2 when exposed to trace amounts of arachidonic acid. At higher concentrations of arachidonate or with ionophore A23187, they produce more PGE2 than prostacyclin and additionally make PGF2 alpha and small amounts of eicosanoids comigrating with hydroxylated derivatives of arachidonate. Endothelia grown on micropore filters release prostaglandins from both apical and basal surfaces; however, the ratio of basal to apical release is as high as 4:1. This polarity suggests that cerebral endothelial prostaglandins can interact with neighboring cells of the vessel wall and brain parenchyma, where they may play important roles in the control of cerebrovascular tone and neuroglial function. These eicosanoids also are produced by mouse brain microvessels, but the major microvessel product is 12-hydroxyeicosatetraenoic acid. This suggests that 12-hydroxyeicosatetraenoic acid may be abundant in brain injuries after arachidonate release. Cultured cerebral endothelia rapidly convert 12-hydroxyeicosatetraenoic to more polar metabolites and thus may prevent the accumulation of this potentially deleterious hydroxyacid.This publication has 17 references indexed in Scilit:
- Prostaglandin release from isolated rabbit cerebral cortex micro-vessels--comparison of 6-keto PGF1 alpha and PGE2 release from micro-vessels incubated in 100% O2, room air and 95% N2:5% CO2.Stroke, 1984
- Arachidonic acid and prostaglandin endoperoxide metabolism in isolated rabbit and coronary microvessels and isolated and cultivated coronary microvessel endothelial cells.JCI Insight, 1983
- Prostacyclin biosynthesis in cultured vascular endothelium is limited by deactivation of cyclooxygenase.JCI Insight, 1983
- Effects of isolation and culture on prostaglandin synthesis by porcine aortic endothelial and smooth muscle cellsJournal of Cellular Physiology, 1982
- Sites of prostaglandin synthesis in the bovine heart and isolated bovine coronary microvessels.Circulation Research, 1981
- Prostaglandin D synthase in microvessels from the cat cerebral cortexProstaglandins, 1981
- Prostaglandin levels in isolated brain microvessels and in normal and norepinephrine-stimulated cat brain homogenatesProstaglandins, 1981
- Biosynthesis of Prostacyclin in Rat Cerebral Microvessels and the Choroid PlexusJournal of Neurochemistry, 1981
- Prostaglandin endoperoxide metabolism by bovine cerebral micro vesselsBiochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1980
- PGF2α, thromboxane B2 and hete levels in gerbil brain cortex after ligation of common carotid arteries and decapitationProstaglandins, 1979