Effects of acupuncture combined with Kaijingtongmai Decoction on ATP sensitive potassium channel related proteins Kir6.1 and Kir6.2 in myocardial infarction rats

Objective:To study the effect of combination of acupuncture and medicine on the expression of ATP sensitive potassium channel related proteins Kir6.1 and Kir6.2 in rats with myocardial infarction,and to study the possible mechanism of combination of acupuncture and medicine on the improvement of myocardial infarction,so as to provide experimental data basis for the development of new treatment methods for myocardial infarction.Methods:65 healthy male SD rats were randomly selected as the control group.The other rats were fed with high-fat food for three weeks.The rats in the control group were injected with normal saline subcutaneously,and the other rats were injected with isoproterenol hydrochloride in the same way.Through ECG comparison,40 successful Mi rats were randomly divided into model group,acupuncture group,western medicine group and acupuncture drug combination group,with 10 rats in each group.After the corresponding treatment,the ECG changes of rats in each group were observed,the pathological changes of rat cardiomyocytes were observed by HE staining,and the expression of ATP sensitive potassium channel(Kir6.1,Kir6.2)protein was detected by Western blot.Results:compared with the control group,40 experimental specimens in the experimental group showed significant changes in cardiomyocyte protein The expression of Kir6.1 and Kir6.2 increased,and the difference was statistically significant.After treatment,compared with the model group,the protein expression of Kir6.1 and Kir6.2 in cardiomyocytes of Western medicine group,acupuncture group and acupuncture drug combination group showed a downward trend,among which the decline degree of acupuncture drug combination group was the most obvious,and the difference was statistically significant.The decline degree of acupuncture group and Western medicine group was not significant,and there was no significant difference Conclusion:acupuncture combined with medicine has a significant effect on improving myocardial infarction in rats,which may be related to the expression of ATP sensitive potassium channel related proteins Kir6.1 and Kir6.2 in rat cardiomyocytes.

Effect of Wenxin granule on Bcl-2/Bax/Caspase apoptosis pathway gene expression in rats with myocardial infarction

Objective:To explore the cardioprotective mechanism of Wenxin Granules regulating the expression of apoptosis-related genes in cardiomyocytes.Methods:A rat model of myocardial infarction was established and randomly divided into model group,Wenxin granule low-dose group,Wenxin granule high-dose group,metoprolol group and sham operation group.the left ventricular end systole anterior wall thickness(LVAWs),end systole inner diameter(LVIDs),end systole posterior wall thickness(LVPWs),end-diastolic anterior wall thickness(LVAWd),end-diastolic inner diameter(LVIDd),end-diastolic posterior wall thickness(LVPWd)and left ventricular ejection fraction(LVEF)were detected by echocardiography in each group after 2 weeks of treatment.Hematoxylin eosin(HE)staining was used to observe the changes in the cardiac structure of rats in each group.Real-time PCR(Real-time PCR)was used to detect the relative expression of mammalian B-cell lymphoma-2(BCL-2),BCL-2 related X protein(BAX),Caspase-9(Caspase-9),and Caspase-3(Caspase-3)mRNA.TUNEL staining was used to detect changes in the apoptotic rate of rat cardiomyocytes in each group.Results:Compared with the sham operation group,the LVAWs,LVPWs,LVPWd and LVEF of the model group were significantly reduced(P<0.05,P<0.01),and LVIDs and LVIDd were significantly increased(P<0.05,P<0.01).Severe pathological ischemia injury of heart tissue.The relative expression of BCL-2 mRNA and the ratio of BCL-2/BAX in the model group were significantly reduced(P<0.01),while the relative expression of BAX,Caspase-9 and Caspase-3 mRNA was significantly increased(P<0.01).The apoptosis rate was significantly increased(P<0.01).In the low-dose and high-dose groups of Wenxin Granules and the Metoprolol group,LVAWs,LVPWs,LVPW d,and LVEF of rats in each administration group increased significantly(P<0.05,P<0.01),LVIDs,LVIDd was significantly reduced(P<0.05,P<0.01),the pathological damage of the heart tissue was improved,the expression of BCL-2 mRNA and the ratio of BCL-2/BAX were significantly increased(P<0.05,P<0.01),BAX,The expression of Caspase-9 and Caspase-3 mRNA was significantly reduced(P<0.05,P<0.01),and the apoptotic rate of myocardial cells was significantly reduced(P<0.01).Conclusion:Wenxin granule can play a cardioprotective role by regulating the gene expression of BCL-2/BAX/Caspase apoptosis pathway.