Effect of Active Components of Zhi Ga ncao Decoction and Their Combinatio n on Triggered Activity and Myocar-dial Damage in Isolated Ischemia -reperfusion Rat Heart / 中药新药与临床药理

Objective To observe the effect of active components(glycyrrhizic acid monoaminate,total ginsenoside and to-tal ophiopogonoside)of Zhi Gancao Decoction(ZGD)and their combination on the triggered activity and myocardial dam-age in the isolated ischemia -reperfusion rat heart.Methods Isolated rat heart was treated with L angendroff perfusion and monophase action potential technology was applied.Results &Conclusion Total extract of ZGD,single active c omponents and their combination can markedly l ower the incidence of cardiac triggered activity,prevent the myocardiu m from injury and decrease the incidence of arrhythmia induced by ischemia -reperfusion in rats and the effects of their com bination are positively related to the doses.