Ethyl pyruvate(EP) group was carried out with the same protocol as the I/R gorup except that it was supplied with K-H buffer containing 2 mmol/L ethyl pyruvate 15 min before ischemia and during reperfusion.

• EP组试验程序与I/R组相同,平衡15 min后和再灌注期间使用含2 mmol/L EP的K-H液。