WANG Bing,LIU Shunyu,WANG Zhentao,et al.Effect of Kangxian Yixin Formula (抗纤益心方) on Mitochondrial Quality Control in Myocardial Tissue of Dilated Cardiomyopathy Mice[J].Journal of Traditional Chinese Medicine,2022,63(07):664-670.
WANG Bing,LIU Shunyu,WANG Zhentao,et al.Effect of Kangxian Yixin Formula (抗纤益心方) on Mitochondrial Quality Control in Myocardial Tissue of Dilated Cardiomyopathy Mice[J].Journal of Traditional Chinese Medicine,2022,63(07):664-670.DOI: 10.13288/j.11-2166/r.2022.07.011.
Effect of Kangxian Yixin Formula (抗纤益心方) on Mitochondrial Quality Control in Myocardial Tissue of Dilated Cardiomyopathy Mice
(抗纤益心方, KYF) in the treatment of dilated cardiomyopathy (DCM).
Methods
2
Thirty cTnT
R141W
transgenic mice with DCM were randomly divided into the model group, KYF group and coenzyme Q10 group, with 10 mice in each group. Ten C57BL /6J mice were set as the normal group. Coenzyme Q10 solution at a dose of 1.5 mg/(kg·d), and KYF at a dose of 20.4 g/(kg·d) were given by gavage to the corresponding coenzyme Q10 group and KYF group, respectively. For the normal group and the model group, normal saline at a dose of 10 ml/(kg·d) were given by gavage. After eight weeks intervention, the cardiac function indicators including left ventricular end-diastolic diameter (LVEDD), left ventricular end-systolic diameter (LVESD), left ventricular ejection fraction (LVEF), and left ventricular fractional shortening (FS) were assessed. The myocardial histopathology and ultrastructure were observed. The levels of adenosine triphosphate (ATP) and creatine phosphate (PCr), as well as the expression levels of mitochondrial quality control-related proteins including Drp1, Mff, Mfn1, Opa1, Pink1, Parkin, and peroxisome proliferator-activated receptor gamma coactivator 1α (PGC-1α) were detected.
Results
2
Compared to the normal group, the model group had significantly increased LVEDD and LVESD, as well as reduced EF and FS (
P
<0.05). Moreover, in the model group, there were disordered cardiomyocytes, significant fibrosis and damaged ultrastructure; the PCr level and the PCr/ATP ratio significantly decreased (
P
<0.05), and the expressions of Drp1, Mff, Pink1, Parkin and PGC-1α were reduced (
P
<0.05). Compared to those in the model group, LVEDD and LVESD in the KYF group and the coenzyme Q10 group significantly decreased, while LVEF significantly increased (
P
<0.05); the morphology of myocardial cells was improved, and the pathological fibrosis and the cardiac ultrastructural damage were reduced. Moreover, in the KYF group, PCr level and PCr/ATP ratio, as well as expression of Mff, Pink1, Parkin, and PGC-1α significantly increased (
P
<0.05); in the coenzyme Q10 group, the expression of Pink1 and PGC-1α significantly increased (
P
<0.05). Compared to the KYF group, the coenzyme Q10 group had significantly lower expression of Parkin (
P
<0.05).
Conclusion
2
KYF can effectively improve the cardiac function of mice with DCM, the mechanism may be related to the regulation of mitochondrial quality control.
关键词
Keywords
references
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