Exercise Training Preserves Ischemic Preconditioning in Aged Rat Hearts by Restoring the Myocardial Polyamine Pool

Figure 7

Isolated rat cardiomyocytes were stained with JC-1. (a) The red fluorescence represents the mitochondrial aggregate form of JC-1, indicating an intact . The green fluorescence represents the monomeric form of JC-1, indicating the dissipation of the . (b) Statistical analysis of the ratio of red to green fluorescence. (c) Carbonyl cyanide m-chlorophenyl hydrazone was used as a positive control. The data are shown as the mean ± SE ( per group). versus the control group, ^† versus the IR group; versus exercised old PC group.