Norepinephrine (NE) stimulates phospholipase D (PLD) activity and cell proliferation in vascular smooth muscle cells (VSMCs). The objective of this study was to determine the contribution of PKC-zeta to NE-induced PLD activation and cell proliferation in VSMCs. PLD activity was measured by the formation of [3H]phosphatidylethanol in VSMCs labeled with [3H]oleic acid and exposed to ethanol.
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