Review Article

Inhibition of Adenylyl Cyclase Type 5 Increases Longevity and Healthful Aging through Oxidative Stress Protection

Figure 5

The effects of chronic isoproterenol (ISO) on AC5 Tg hearts ((a) and (b)). Chronic ISO exacerbated cardiomyopathy in AC5 Tg compared with WT, as reflected by a greater decrease in left ventricular ejection fraction (LVEF) (a) and more fibrosis (b) (). Mating the AC5 Tg mice with MnSOD Tg (AC5 Tg × MnSOD Tg) mice rescued ISO cardiomyopathy. The effects of chronic ISO on AC5 KO hearts are shown ((c) and (d)). Chronic ISO reduced cardiomyopathy in AC5 KO compared with WT, as reflected by less of a decrease in LVEF (a) and less fibrosis (b). Mating the AC5 KO mice with MnSOD heterozygous mice (AC5 KO × MnSOD+/−) eliminated the protective effects of AC5 KO with chronic ISO. ISO: isoproterenol. . Data is redrawn from Lai et al. [3].