蒙药广枣3种黄酮类成分对乌头碱所致心律失常的作用比较

目的:观察广枣中3种黄酮类成分对乌头碱所致心律失常的影响,为找到1种抗心律失常作用较强的主要化学单体或简单复合物打下基础。方法:采用Langendorff灌流法,观察药物对乌头碱所致离体大鼠心律失常的影响;给大鼠iv乌头碱致心律失常,观察药物抗心律失常作用。结果:与空白对照组比,样品1、样品2使大鼠离体心脏室颤出现时间延长,出现所需乌头碱量增加,样品3使大鼠离体心脏室颤出现时间缩短,出现所需乌头碱量减少;样品1、样品2显著延长整体大鼠早搏、室速、室颤、心脏停搏出现时间,样品3使整体大鼠室速、室颤出现时间缩短。三者的上述作用均呈明显的剂量依赖性。结论:样品1、样品2能对抗乌头碱所导致心律失常,样品3可促进乌头碱所导致心律失常的发生。

Comparing the actions of the three flavone ingredients in choerospondias axillaris on arrhythmias induced by aconitine

Objective: To compare the actions of the three flavone ingredients in choerospondias axillaris on arrhythmias Induced by a-conitine. Method: Langendorff perfuse was applied in the experiment, the antiarrhythmic action was to study by using aconitine on the the isolated heart; The antiarrhythmic action of the three flavone ingredients in choerospondias axillaris was to study by using i. v aconitine in rat to induce arrhythmias. Result: Compared with the NS group, sample 1 and sample 2 both significantly prolonged the beginning time of VF of isolated heart and increased the dosage of aconitine, sample 3 reduced the beginning time of VF of isolated heart and decreased the dosage of a-conitine, sample 1 and sample 2 both greatly prolonged the beginning time of VE, VT, VF, HA; sample 3 greatly reduced the beginning time of VT, VF. The actions of the three samples were in a concentration-dependent way. Conclusion: Sample 1 and sample 2 both resisted the occurrence of arrhythmias induced by aconitine, sample 3 markedly promoted the occurrence of arrhythmias induced by aconitine.