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Background  Type 2 diabetes mellitus increases the risk of cardiovascular disease including myocardial infarction (MI). Inflammation and apoptosis have been implicated in the pathophysiology of MI. In the present study, the effects of astragaloside IV (AS-IV) on MI in diabetic mice were evaluated.    Methods  High glucose/high fat (HG/HF) and hypoxia culture condition were established to mimic diabetic condition. After administration of AS-IV to H9c2 myocytes, the cell apoptosis, viability, and activation of mitogen-activated protein kinase (MAPK) signaling pathways were detected. MI was induced in streptozotocin-induced diabetic mice. After administration of AS-IV to mice, cardiac function, cardiac fibrosis, inflammation, and activation of MAPK signaling pathway were detected.    Results  Astragaloside IV treatment significantly inhibited HG/HF and hypoxia-induced apoptosis of H9c2. AS-IV inhibited activation of JNK and p38 signaling pathway while promoting the activation of EKR signaling pathway. AS-IV treatment rescued cardiac function, suppressed cardiac fibrosis and inflammation, and differently regulated the activation of MAPK signaling pathways.    Conclusion  Astragaloside IV prevented apoptosis and restored cardiac function in MI, which may be due to the regulation of MAPK signaling pathway in diabetes.

Astragaloside IV Ameliorates Myocardial Infarction Induced Apoptosis and Restores Cardiac Function