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. 1990 Nov 1;271(3):571–574. doi: 10.1042/bj2710571

Relationship between arachidonic acid release and Ca2(+)-dependent exocytosis in digitonin-permeabilized bovine adrenal chromaffin cells.

A Morgan 1, R D Burgoyne 1
PMCID: PMC1149600  PMID: 2123093

Abstract

The relationship between Ca2(+)-dependent arachidonic acid release and exocytosis from digitonin-permeabilized bovine adrenal chromaffin cells was investigated. The phospholipase A2 inhibitors mepacrine, nordihydroguaiaretic acid and indomethacin had no effect on either arachidonic acid release or secretion. The phospholipase A2 activator melittin had no effect on secretion. The specific diacylglycerol lipase inhibitor RG80267 had no effect on secretion, but decreased basal arachidonic acid release to such an extent that the level of arachidonic acid in treated cells in response to 10 microM-Ca2+ was equivalent to that of control cells in the absence of Ca2+. Staurosporine, a protein kinase C inhibitor, was found to abolish Ca2(+)-dependent arachidonic acid release completely, but had only a slight inhibitory effect on Ca2(+)-dependent secretion. It is concluded that arachidonic acid is not essential for Ca2(+)-dependent exocytosis in adrenal chromaffin cells.

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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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