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. 1985 Dec 15;232(3):625–628. doi: 10.1042/bj2320625

Effect of diarachidonin on prostaglandin E2 synthesis in rabbit kidney medulla slices.

Y Fujimoto, H Uno, C Kagen, T Ueno, T Fujita
PMCID: PMC1152930  PMID: 3937522

Abstract

The effect of diarachidonin on the synthesis of prostaglandin E2 in rabbit kidney medulla slices was examined. The addition of diarachidonin stimulated prostaglandin E2 production in a dose-dependent manner. At three concentrations (10, 50 and 100 microM), increases in prostaglandin E2 formation induced by exogenous diarachidonin were 2-fold greater than those induced by exogenous arachidonic acid. Diacylglycerol or phosphatidic acid from egg lecithin had little or no effect on prostaglandin E2 production. Moreover, EGTA failed to inhibit diarachidonin-stimulated prostaglandin E2 formation, indicating that the stimulatory effect of diarachidonin is not mediated through the activation of endogenous phospholipase A2 (including phosphatidic acid-specific phospholipase A2). These results are discussed in the light of our former hypothesis that arachidonic acid release from kidney medulla phospholipids might occur through the sequential action of a phospholipase C coupled to diacylglycerol and monoacylglycerol lipases [Fujimoto, Akamatsu, Hattori & Fujita (1984) Biochem. J. 218, 69-74].

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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