DONG Xin,WEN Ruijia,CHEN Zixin,et al.Effect of Nuanxinkang (暖心康) on Cardiomyocyte Apoptosis in Myocardial Ischemia Reperfusion Model Mice[J].Journal of Traditional Chinese Medicine,2021,62(18):1622-1627.
DONG Xin,WEN Ruijia,CHEN Zixin,et al.Effect of Nuanxinkang (暖心康) on Cardiomyocyte Apoptosis in Myocardial Ischemia Reperfusion Model Mice[J].Journal of Traditional Chinese Medicine,2021,62(18):1622-1627.DOI: 10.13288/j.11-2166/r.2021.18.012.
Effect of Nuanxinkang (暖心康) on Cardiomyocyte Apoptosis in Myocardial Ischemia Reperfusion Model Mice
Thirty C57BL/6 male mice were randomly divided into three groups
sham operation group
model group and Nuanxinkang group
with 10 mice in each group. The reversible ligation of left anterior descending coronary artery was used in
Nuanxinkang
group and model group to establish myocardial ischemia reperfusion (IR) model.
Nuanxinkang
1.65 g/kg was given to the Nuanxinkang group by gavage
while the model group and sham operation group were given 0.1 ml/10 g normal saline by gavage; the interventions were administered once daily for six weeks. Ultrasound was used to evaluate the cardiac function of mice; qPCR method was used to detect the expression of atrial natriuretic peptide (ANP) mRNA and B-type natriuretic peptide (BNP) mRNA in myocardial tissue; HE and TUNEL staining were used to evaluate the structural changes of cardiac tissue and the degree of cardiomyocyte apoptosis
respectively. The cardiomyocyte apoptosis rate was calculated; Western blotting was used to detect the expression of apoptosis-related proteins B-cell lymphoma 2 (Bcl-2)
Bcl-2 related X protein (Bax) and activated cysteine protease 3 (Caspase-3) in the myocardium of the three groups.
Results
2
Compared to sham operation group
the model group had significantly decreased left ventricular ejection fraction (EF)
cardiac output (CO)
left ventricular anterior wall thickness in end-diastole (LVAWd) and left ventricular anterior wall thickness in end-systole (LVAWs)
increased expression of ANP
BNP mRNA
Bax and activated Caspase-3 in the cardiac tissue
reduced Bcl-2 and Bcl2/Bax
and uprising cardiomyocyte apoptosis rate (
P
<0.01). Compared to the model group
the Nuanxinkiang group had significantly higher EF
CO
LVAWd and LVAWs
lower expression of ANP mRNA
BNP mRNA
Bax and activated Caspase-3 in the cardiac tissue
increased Bcl-2 and Bcl2/Bax
and decreased cardiomyocyte apoptosis rate (
P
<0.05
P
<0.01). The HE staining showed that the cardiomyocytes of the Nuanxinkang group were slightly swollen compared to those of the model group; the cell boundaries were relatively clear; the myocardial fibers were arranged relatively neatly
and the inflammatory cell infiltration was reduced.
Conclusion
2
Nuanxinkang
may improve heart failure through reducing expression of Bax and activated Bcl-2
up-regulating Bcl-2 protein expression
inhibiting ANP and BNP gene expression
and decreasing cardiomyocyte apoptosis.
关键词
Keywords
references
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Project Group of Specification for Traditional Chinese Medicine Syndrome Diagnosis of Heart Failure, China Association of Chinese Medicine
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Related Institution
The Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine
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First Affiliated Hospital,Heilongjiang University of Chinese Medicine