Impacts of neferine on myocardiocyte autophagy and apoptosis in acute myocardial infarction rats
10.3969/j.issn.1009-0126.2025.08.022
- VernacularTitle:甲基莲心碱对急性心肌梗死大鼠细胞自噬和凋亡的影响
- Author:
Bei MENG
1
;
Chunxiao ZHAI
;
Huan MENG
;
Jiangrui ZHAO
Author Information
1. 464000 信阳职业技术学院;信阳师范大学教育科学学院
- Publication Type:Journal Article
- Keywords:
protein kinases;
regulatory-associated protein of mTOR;
myocardial infarction;
auto-phagy;
apoptosis
- From:
Chinese Journal of Geriatric Heart Brain and Vessel Diseases
2025;27(8):1082-1087
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the impacts of neferine on cellular autophagy and apoptosis,and the silent mating type information regulation 2 homolog-1/5'-AMP activated protein kinase activated protein kinase/mammalian target of rapamycin(SIRT1/AMPK/mTOR)signaling path-way in acute myocardial infarction(AMI)rats.Methods A rat model of AMI was constructed on male SD rats,and then 72 successfully modeled rats were randomly divided into model group,low-and high-dose neferine groups,and high-dose neferine+SIRT1 inhibitor(EX-527)group,with 18 rats in each group.Another 18 normal rats served as the Control group.The area of myocardial infarction,expression of myocardocyte autophagy related proteins,myocardocyte apoptosis,and expression of SIRT1/AMPK/mTOR signaling pathway-related proteins were observed and detec-ted in above groups of rats.Results When compared with the model group,the low-and high-dose neferine groups exhibited milder pathological injuries,higher left ventricular ejection frac-tion,enhanced left ventricular fractional shortening,increased optical densities of microtubule associated protein 1 light chain 3(LC3)Ⅱ and Beclin-1,and elevated protein levels of LC3 Ⅱ/LC3 Ⅰ,Beclin-1,Bcl-2,SIRT1,and p-AMPK/AMPK(P＜0.05),and shorten left ventricular end-systolic diameter,lessened area of myocardial infarction,lower apoptotic rate,and reduced expres-sion of Bax and p-mTOR/mTOR(P＜0.05).While,in comparison to high-dose neferine treat-ment,addition of SIRT1 inhibitor,EX-527 resulted in more severe myocardial injuries,decreased left ventricular ejection fraction and left ventricular fractional shortening values,reduced optical densities of LC3 Ⅱ and Beclin-1,and down-regulated protein levels of LC3 Ⅱ/LC3 Ⅰ,Beclin-1,Bcl-2,SIRT1,and p-AMPK/AMPK(P＜0.05),but increased left ventricular end-systolic diame-ter,larger myocardial infarction area,increased apoptotic rate,and increased expression levels of Bax and p-mTOR/mTOR(P＜0.05).Conclusion Neferine can inhibit apoptosis and promote autophagy in AMI rats and exert myocardial protective effects,which may be related to the activa-tion of the SIRT1/AMPK/mTOR signaling pathway.
