Synergistic inhibitory effects of atriopeptin II and isoproterenol on contraction of rat aortic smooth muscle: roles of cGMP and cAMP.

Abstract

Atriopeptin II and isoproterenol acted synergistically to inhibit the phenylephrine-induced contraction of aortic smooth muscle from Wistar-Kyoto (WKY) rats. Thus, a weakly inhibitory concentration of atriopeptin II (10 nM) caused a 5-fold decrease in the IC50 of isoproterenol from 169 nM to 32 nM, whereas a low concentration of isoproterenol (100 nM… (More)

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