Effect of Kangxian Yixin Formula on cardiomyocyte apoptosis in mice with dilated cardiomyopathy via regulating mitochondrial dynamics
Experimental Studies|更新时间:2023-11-06
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Effect of Kangxian Yixin Formula on cardiomyocyte apoptosis in mice with dilated cardiomyopathy via regulating mitochondrial dynamics
Journal of Beijing University of Traditional Chinese MedicineVol. 46, Issue 10, Pages: 1391-1399(2023)
作者机构:
1.河南中医药大学 郑州 450046
2.河南省中医院
作者简介:
CHANG Hongbo, Ph.D., Attending Physician. Henan University of Chinese Medicine, No.156, Jinshui East Road, Zhengdong New District, Zhengzhou 450046. E-mail: hnzy281913220@126.com
基金信息:
National Natural Science Foundation of China(82205082);Traditional Chinese Medicine Discipline Construction Project of Characteristic Key Discipline of Henan Province(STG-ZYXKY-2020035);Second Batch of Scientific Research Project of National Traditional Chinese Medicine Clinical Research Base of Henan Provincial Health Commission(2021JDZX2001);Traditional Chinese Medicine Top Talent Training Project of Henan Province(2021-15)
CHANG Hongbo, WANG Zhentao, WU Hong, et al. Effect of Kangxian Yixin Formula on cardiomyocyte apoptosis in mice with dilated cardiomyopathy via regulating mitochondrial dynamics[J]. Journal of beijing university of traditional chinese medicine, 2023, 46(10): 1391-1399.
DOI:
CHANG Hongbo, WANG Zhentao, WU Hong, et al. Effect of Kangxian Yixin Formula on cardiomyocyte apoptosis in mice with dilated cardiomyopathy via regulating mitochondrial dynamics[J]. Journal of beijing university of traditional chinese medicine, 2023, 46(10): 1391-1399. DOI: 10.3969/j.issn.1006-2157.2023.10.010.
Effect of Kangxian Yixin Formula on cardiomyocyte apoptosis in mice with dilated cardiomyopathy via regulating mitochondrial dynamics
Formula (KYF) on cardiomyocyte mitochondrial dynamics and apoptosis in mice with dilated cardiomyopathy (DCM).
Methods
2
According to the random number table method
40 cTnT
R141W
transgenic DCM mice were randomly divided into the model group
the KYF low-dose group (2.7 g/kg)
the KYF high-dose group (5.4 g/kg)
and the captopril group (10.1 mg/kg)
with 10 mice per group. Another 10 C57BL/6J mice were set up as the normal group
and each group was administered intragastrically for 8 weeks
respectively. Left ventricular end-diastolic diameter (LVEDD)
left ventricular end-systolic diameter (LVESD)
ejection fraction (EF)
and reduction rate (FS) were determined using a small animal ultrasound instrument. Myocardial pathology was observed by HE staining. The ultrastructure of myocardial mitochondria was observed by transmission electron microscope. Apoptosis of cardiomyocytes was detected by the TUNEL method. The content of ROS was detected using a fluorescent probe. The expression levels of MFN2
OPA1
DRP1
FIS1
Bax
Bcl-2
and Caspase-3 were detected by Western blotting.
Results
2
Compared with the normal group
LVESD and LVEDD were increased
and FS and EF were decreased in the model group (
P
<
0.05)
myocardial injury was obvious
mitochondrial disarrangement and swelling were accompanied by vacuole-like changes
the proportion of apoptotic cells was increased
the content of ROS was increased
the protein expression levels of the mitochondrial fusion proteins MFN2 and OPA1 and the anti-apoptotic factor Bcl-2 were decreased
and the expression levels of the mitochondrial fission proteins DRP1 and FIS1 and apoptotic factors Bax and Caspase-3 were increased (
P
<
0.05). Compared with the model group
LVESD and LVEDD were decreased
FS and EF were increased (
P
<
0.05)
myocardial injury was alleviated
mitochondrial disarrangement and swelling were alleviated
the proportion of apoptotic cells was reduced
the content of ROS was reduced
the protein expression levels of Bcl-2
MFN2
and OPA1 were increased
and the protein expression levels of Bax
Caspase-3
DRP1
and FIS1 were decreased (
P
<
0.05) in the KYF low- and high-dose groups.
Conclusion
2
KYF inhibits cardiomyocyte apoptosis and improves cardiac function in DCM mice
and its mechanism of action may be related to regulating mitochondrial dynamic balance.
关键词
Keywords
references
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