Time course of phorbol ester-induced contraction and protein kinase C activation in rat aorta.

Abstract:

:This study investigates the relationship between the rate of phorbol ester-induced contraction of intact rat aorta and protein kinase C activation, as assessed by the translocation of protein kinase C from the cytosolic to the particulate fraction. Aorta was exposed to Ca(2+)-free physiologic salt solution prior to phorbol ester to prevent Ca(2+)-induced protein kinase C translocation during tissue homogenization. Phorbol myristate acetate, as well as phorbol dibutyrate, decreased cytosolic and/or increased particulate protein kinase C activity as early as 5 s following phorbol ester addition, which was prior to, or coincident with, the onset of contraction. These results suggests that phorbol ester-induced contraction of intact vascular smooth muscle is associated in a time-dependent manner with protein kinase C activation.

journal_name

Eur J Pharmacol

authors

Bazan E,Campbell AK,Rapoport RM

doi

10.1016/0922-4106(95)90001-2

subject

Has Abstract

pub_date

1995-08-15 00:00:00

pages

253-7

issue

3

eissn

0014-2999

issn

1879-0712

journal_volume

290

pub_type

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