洛泰对异丙肾上腺素诱导大鼠急性心肌缺血的保护作用

Powdered injections of luotai protect against ISO-induced experimental myocardial ischemia model on rats

目的观察三七总皂甙的新剂型———洛泰 (血塞通粉针剂 ,主要成分为三七总皂甙 )对大鼠急性心肌缺血的保护作用。方法采用微量异丙肾上腺素 (ISO)恒速静注造成大鼠急性心肌缺血的模型 ,动态观测Ⅱ导联心电图S_T段的变化 ,以ST段降低及∑ST为指标反映缺血程度。结果静脉注射洛泰50,100mg·kg-1,对ISO诱导大鼠急性心肌缺血有一定程度的保护作用,呈剂量依赖性 ,其中以100mg·kg-1组对心电图的改善作用较明显。灌胃给予洛泰对ISO诱导大鼠实验性急性心肌缺血也有一定程度的减轻作用 ,但没有统计学差异。结论采用改进的大鼠急性心肌缺血模型具有稳定性和重复性好、快捷有效、易掌握、耗费药品少等优点 ,适宜于初筛药物。同时实验结果提示静脉和灌胃两种途径给予洛泰对大鼠急性心肌缺血均具有一定程度的保护作用。

Aim Powdered injections of luotai consist of total saponins of panax notoginseng(PNS) which protect against ischemia injury from myocardial reperfusion injury.Methods ISO-induced acute myocardial ischemia model in rat was made, which decreased S-T sigments in ECG.Luotai after intravenous injection or oral can protect against S-T sigment significant reduction and ∑ST after ISO induced acute myocardial ischemia .Results Luotai 50 mg·kg-1 and 100 mg·kg-1 significantly inhibited S-T sigment decreases. Conclusion Luotai protect ISO induced acute myocardial ischemia and has dose-dependent effect.This ISO-induced acute myocardial ischemia model in rat has some significant advantages,for example,higher stability, good duplication, quickly filtrates, easily masters.