Methods Thirty five dogs were randomly divided into 5 groups (7 in each), namely groups of stunned, reperfusion of NG nitro L arginine methyl ester (L NAME), L Arginine(L Arg), 3 morpholino sydnonimine (Sin 1) and control.

• 方法 将 35条犬随机分为 5组 (每组 7条 ) ,即MS组、亚硝基左旋精氨酸甲酯 (NG nitro L argininemethylester,L NAME)组、左旋精氨酸 (L Arginine,L Arg)组、3 morpholinosydnonimine (Sin 1,一种NO供体 )再灌注组及对照组。