摘要
利用麻醉大鼠结扎冠状动脉前降支造成急性心肌梗塞及再灌注损伤模型,观察中药益气活血方对心肌缺血及再灌注时心律失常的作用。以益气活血方10ml/kg体重于冠状动脉结扎前灌胃3d,第4天分别行冠脉结扎及再灌注实验。结果表明益气活血方能显著降低急性心肌缺血及再灌注时心律失常的发生率及严重性。体外电子顺磁共振法测定表明,益气活血方能有效清除超氧阴离子自由基,这可能是其抗再灌注心律失常作用的机制之一。
The effects of qi-tonics and blood-activating decoction on acute myocardial infarction and ischemia-reperfusion induced arrhythmias were studied in anaesthetized open chest SD rats. Three days before coronary artery occlusion, the qi-tonics and blood-activating decoction was perfused into the stomach of the rats in the experimental group (10 ml/kg weight) once a day, and 4d later, the coronary artery was occluded in anaesthetized open chest rats. The results demonstrated that qi-tonics and blood-activating decoction could reduce significantly the incidence and severity of arrhythmias caused by myocardial infarction and ischemia-reperfusion. The qi-tonics and blood-activating decoction could decrease the amount of the superoxide anion radicals (O2-) produced in the alkaline dimethyl sulfoxide (DMSO) system measured by electron paramagnetic resonance (EPR) at low temperature. The effect of qi-tonics and blood-activating decoction on O2-may be one of the mechanisms for its antiarrhythmic effect during reperfusion.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
1993年第3期225-228,共4页
Academic Journal of Second Military Medical University
关键词
益气活血方
心肌缺血
再灌注损伤
qi-tonics and blood activating decoction
coronary artery occlusion
myocardial infarction
reperfusion injury
superoxide anion radicals
rats
