The effects of DG on cardiac function recovery and damage-related enzyme release. A) The contractile force recovery of an ischemia reperfusion-injured isolated rat hearts was protected by DG. The force recovery of a rat heart in each time point for a rat heart is the ratio of the contractile force at indicated time point to the force before ischemia; B) The coronary flow rate recovery of an ischemia reperfusion-injured isolated rat hearts was protected by DG. The flow recovery in each time point is the ratio of the flow rate at indicated time point to the rate before ischemia; C) The accumulating leakage of creatine kinase (CK) of isolated rat hearts was inhibited by DG; D) The accumulating leakage of lactate dehydrogenase (LDH) of isolated rat hearts was inhibited by DG. Curves were plotted by the mean of 6 rat hearts per group (n = 6). The data were expressed as mean ± S.E.M. *p < 0.05, **p < 0.01 and ***p < 0.001 indicated the groups with significant difference when compared to the control group.