Fig. 6.
Effect of the AMPK/Sirt1 activator resveratrol on cardiomyocyte mechanical function in young (4–5 month-old) or old (26–28 month-old) WT and ALDH2 transgenic mice. Mice were treated with resveratrol (RSV, 5 mg/kg, i.p., twice per week) for 4 weeks prior to assessment of cardiac mechanical properties. A: Resting cell length; B: Peak shortening (normalized to cell length); C: Maximal velocity of shortening (+ dL/dt); D: Maximal velocity of relengthening (− dL/dt); E: Time-to-PS (TPS); and F: Time-to-90% relengthening (TR90). Mean ± SEM, n = 70 cells per group, *p < 0.05 vs. WT-Young group, # p < 0.05 vs. WT-Old group. † p < 0.05 vs. ALDH2-Old group.