RESUMEN
OBJECTIVE:To observe the effect of ligustrazin on the mitochondrial damage of myocardium in ischemia-reperfusion rats and the mechanism involved METHODS:Rat model of myocardial ischemia-reperfusion injury was established by coronary artery ligation and the activities of Ca2+-ATPase,Ca2+?Mg2+-ATPase,succinic dehydrogenase(SDH),cytochrome oxidase(CCO),SOD,GSH-PX and contents of phospholipid(PL),MDA,Cyt aa3 and Cyt C in the myocardial mitochondria were observed RESULTS:As compared with ischemia-reperfusion group(IR),IR+L(ligustrazin)group showed significant increase in the activities of Ca2+-ATPase,Ca2+?Mg2+-ATPase,SDH,CCO,SOD and GSH-PX(P
RESUMEN
AIM: To observe the dysfunciton of myocardial nuclear calcium transport in rat myocardial injury and the effects of liqustraxin on it. METHODS: The model of myocardial damage was induced by subcutaneous injection of isoproterenol (ISO,5 mg?kg -1?d -1). Myocardial nuclei were purified with sucrose density centrifugation and identified zymologically. The activity of Ca 2+-ATPase was measured zymologically and calcium uptake was assayed with 45Ca 2+ isotope. RESULTS: Compared with the control,the Ca 2+-ATPase activity of myocardial nuclear membrane in ischemia group(exprimental) was decreased by 18.1% (P