[Anti-ischemia reperfusion damage and anti-lipid peroxidation effects of paeonol in rat heart].

Paeonol 60 mg.kg-1 ip, was given to rats for 15 days. On the 16th day myocardial ischemia reperfusion injury was produced in the rat heart by occlusion of the left coronary artery and the release of the occlusion. The results showed that paeonol significantly improved myocardial SOD activity (5.8 +/- 0.6.mg-1 compared with reperfusion control 3.4 +/- 0.9, P < 0.01), reduced the MDA content (11.4 +/- 1.7 nmol.mg-1 versus 17 +/- 1.3, P < 0.01) and cardiac CPK release (1523 +/- 478.5 U.L-1 versus 2355 +/- 626.5, P < 0.01). The myocardial ultrastructure was also protected keeping them from the oxygen free radical damage. It appears that paeonol is an efficient protective agent against ischemia reperfusion damage in the rat heart.