OBJECTIVE Shenmai Injection(SMI)is widely used in the treatment of cardiovascular diseases,such as heart failure and myocardial *** clinic,SMI showed protective effects on doxorubicin(Dox)-induced cardiac *** current ...
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OBJECTIVE Shenmai Injection(SMI)is widely used in the treatment of cardiovascular diseases,such as heart failure and myocardial *** clinic,SMI showed protective effects on doxorubicin(Dox)-induced cardiac *** current study,we investigate the mitochondrial protective mechanisms of SMI on Dox-induced myocardial *** C57BL/6 mice were divided into four groups:①control group;②Dox injury group;③SMI+Dox group and dexrazoxane(DRZ)+Dox *** was a positive *** injury was evaluated by echocardiography,HE and TUNEL staining,myocardial markers measurement.H9C2 cardiomyocytes pretreatment with SMI for 24 h were exposed to *** viability and apoptosis were measured by CCK8,Hoechst33342 staining,and Annexin V/PI ***,mitochondrial membrane potential,and mitochondrial respiratory function were measured to evaluate mito⁃chondrial *** SMI decreased mortality rate of Dox-injected mice,serum CK and CK-MB levels in *** significantly prevented Dox-induced cardiac dysfunction and apoptosis and increased expression level of PI3K,p-Akt,and p-GSK-3β.Moreover,SMI significantly inhibited Dox-induced apoptosis,mitochondrial ROS production,and reduction of mitochondrial membrane potential in H9C2 ***,the cardio-protective effect of SMI was suppressed by PI3K inhibitor *** SMI prevents Dox-induced cardiotoxicity and mitochondrial damage through activation of PI3K/Akt signaling pathway.
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