[Ionic mechanisms of cardiotropic action of a new class III antiarrhythmic drug RG-2].


A perforated patch-clamp analysis of the effect of a novel class III antiarrhythmic agent RG-2, on voltage-dependent currents was made in rat ventricular myocytes. In these cells, RG-2 decreased delayed rectifier outward K(+) current, I(k), in concentration dependent manner with threshold concentration 0.1 microM/l. In contrast, the drug did not have… (More)


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