Effect of aging on postischemic contractile function in CYP2J2 Tr mice. a, LVDP at baseline, at the end of ischemia, and at reperfusion (R10, R20, R30, and R40) in young and aged, WT and CYP2J2 Tr hearts. b, LVDP recovery at 40 min of reperfusion in young and aged, WT and CYP2J2 Tr hearts. c. Rate of contraction, d. Rate of relaxation and, e. Heart rate in young and aged, WT and CYP2J2 Tr hearts. Values represent mean ± SEM; n=8–15 per group; *, p<0.05 vs. WT; #, p<0.05 vs. young animal of same genotype.