Title : Activation of alpha 1-adrenoceptors, protein kinase C, or treatment with intracellular free Ca2+ elevating agents increases pineal phospholipase A2 activity. Evidence that protein kinase C may participate in Ca2+-dependent alpha 1-adrenergic stimulation of pineal phospholipase A2 activity.

Pub. Date : 1987 Aug 25

PMID : 2887563






2 Functional Relationships(s)
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1 The regulation of pineal phospholipase A2 activity was studied indirectly by measuring the release of [3H]arachidonic acid from [3H]arachidonic acid-labeled tissue in organ culture and the formation of radiolabeled lysophosphatidylcholine by glands labeled with 32Pi or [14C]choline. 32pi phospholipase A2 group IB Homo sapiens
2 The effects of norepinephrine, A23187, and protein kinase C activators appear to be mediated by phospholipase A2 because the effects of these compounds on [3H]arachidonic acid release are blocked by an established inhibitor of this enzyme, mepacrine, and because these compounds stimulate the formation of 32P- and 14C-labeled lysophosphatidylcholine by glands incubated with 32Pi or [14C]choline. 32pi phospholipase A2 group IB Homo sapiens