Abstract
The blocker of protein kinase C(PKC) activated large-conductance channel(337.1 pS) in cell attached patch mode in cultured vascular smooth muscle cells. The channel showed time-dependent inactivation whose time course became faster as the amplitude of the command potential was increased. These characteristics of large-conductance channel activated by the application of the PKC blocker were very similar to those of voltage-dependent Cl channels in these cells, indicating the channel activated by the drug is Cl channel. Since voltage-dependent Cl channels were reported to be only activated by forming inside-out patch, these findings suggest Cl permeability of vascular smooth muscle cells is at least partially regulated by protein kinase C.
Published Version
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