Differential effects of phorbol ester (PMA) on blocker-sensitive ENaCs of frog skin and A6 epithelia.

Activation of protein kinase C with phorbol 12-myristate 13-acetate (PMA) caused complex transient perturbations of amiloride-sensitive short-circuit Na+ currents ( I Na) in A6 epithelia and frog skins that were tissue and concentration dependent. A noninvasive channel blocker pulse method of noise analysis (18) was used to investigate how PMA caused time… (More)

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