Early life exercise training and inhibition of mRNA expression to improve age-related arrhythmias and prolong the average lifespan in .

Cardiovascular disease (CVD) places a heavy burden on older patients and the global healthcare system. A large body of evidence suggests that exercise training is essential in preventing and treating cardiovascular disease, but the underlying mechanisms are not well understood. Here, we used the melanogaster animal model to study the effects of early-life exercise training (Exercise) on the aging heart and lifespan. We found in flies that age-induced arrhythmias are conserved across different genetic backgrounds. The fat body is the primary source of circulating lipoproteins in flies. Inhibition of fat body ( apoB homolog) demonstrated that low expression of reduced the development of arrhythmias in aged flies but did not affect average lifespan. At the same time, exercise can also reduce the expression of mRNA in aged flies and have a protective effect on the heart, which is similar to the inhibition of mRNA. Although treatment of and exercise alone had no significant effect on lifespan, the combination of and exercise extended the average lifespan of flies. Therefore, we conclude that and exercise are sufficient to resist age-induced arrhythmias, which may be related to the decreased expression of mRNA, and that and exercise have a combined effect on prolonging the average lifespan.