牛磺酸、普罗帕酮合用抗实验性心律失常作用及对心肌收缩力的影响  

The effects of taurine and propafenone combination on experimental arrhythmias and its influence on cardiac contractility of anesthesized rats

作　　者：李锦平[1] 张明升[2] 梁月琴[2] 

机构地区：[1]山西医科大学汾阳学院药理学教研室,汾阳032200 [2]山西医科大学药理学教研室,太原030000

出　　处：《中国药理学通报》2002年第5期563-566,共4页Chinese Pharmacological Bulletin

摘　　要：目的　研究牛磺酸、普罗帕酮及二者合用对实验性心律失常的对抗作用及对麻醉大鼠心肌收缩力的影响。方法　采用氯化钡或乌头碱诱发大鼠心律失常 ,以室性双向性心律失常持续时间和发生率及引起室早、室速、室颤的乌头碱剂量为指标 ,观察牛磺酸、普罗帕酮单用及合用对二种模型的影响 ;观察单用及合用对麻醉大鼠心率 (HR)、左室收缩压(LVSP)、左室内压最大上升速率 (+LVdp/dtmax)等血流动力学指标的影响。结果　BaCl2 模型中 ,联合用药组较同剂量单用药组的心律失常发生率降低 ,持续时间缩短。乌头碱模型中 ,联合用药组较同剂量单用药组的乌头碱剂量增大。血流动力学结果显示 ,iv 2mg·kg-1的普罗帕酮对麻醉大鼠心脏有明显的负性肌力作用 ,而与iv 5 0mg·kg-1牛磺酸合用时则无明显的负性肌力作用。结论　牛磺酸和普罗帕酮对BaCl2 及乌头碱诱发的室性心律失常有抗心律失常作用 ,二者合用作用增强 ;AIM To investigate the effects of taurine(TAU) and propafenone(PRO) combination on experimental arrhythmias and its influence on haemodynamics of anesthesized rats' heart. METHODS Rats were pretreated respectively with intravenous administration of saline, TAU, PRO, or TAU and PRO combination. Afterwards, the rats were intravenously administrated with BaCl 2 or aconitine to induce arrhythmia. The arrhythmia lasting time and incidence were observed and recorded on the lead Ⅱ ECG. The cumulative aconitine dosage to induce premature ventricular contraction(PVC), ventricular tachycardia(VT) and ventricular fibrillation(VF) were calculated respectively. The haemodynamic parameters such as LVSP, HR, +d p /d t max were recorded continuously in anesthetized rats pretreated with iv TAU, PRO or TAU and PRO combination. RESULT In BaCl 2 arrhythmia, the arrhythmia duration was shortened significantly; and the arrhythmia incidence was decreased in the combination group, as compared with the single same dosage drug groups. In aconitine arrhythmia, the cumulative aconitine dosages to induce PVC, VT and VF were increased significantly in the combination group. Haemodynamics parameters showed that PRO(2mg·kg -1 iv) significantly decreased LVSP and +LVd p /d t max , while these parameters were not significantly changed in the combination group with same dose of PRO. CONCLUSION TAU and PRO have synergism in antiarrhythmia in both BaCl 2 and aconitine induced arrhythmia; TAU may alleviate cardiac depression exerted by PRO.

关 键 词：牛磺酸 普罗帕酮 抗心律失常 联合用药 血流动力学 

分 类 号：R541.7[医药卫生—心血管疾病] R969.[医药卫生—内科学]