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The ancient traditional Chinese medicine Qishenkeli (QSKL) is widely used in the treatment of heart failure (HF) in China. Previous studies have shown that QSKL has definite effects on HF. The purpose of this study is to identify the regulation of QSKL on apoptosis and clarify the underlying mechanism. An apoptosis model of H9C2 cells was induced by oxygen-glucose deprivation/recovery (OGD/R). An animal model of HF was induced by ligation of left anterior descending (LAD) coronary artery in rat. We found that QSKL reduced intracellular ROS generation, increased mitochondrial membrane potential and protected H9C2 cells against OGD/R-induced apoptosis.  In vivo  results showed that QSKL administration could improve cardiac functions, decrease fibrotic area, infarct size and apoptotic rate in HF model. QSKL regulated the expressions of key apoptotic molecules, including increasing Bcl-2/Bax ratio, reducing the expressions of P53, Bax and Cleaved-caspase-3. Interestingly, QSKL also regulated the phosphorylated expressions of PI3K and Akt without significantly affecting PTEN. Taken together, the protective and anti-apoptotic effects of QSKL could be mediated partly through modulating the PI3K/Akt-P53 apoptotic pathway.

QSKL protects against myocardial apoptosis on heart failure via PI3K/Akt-p53 signaling pathway