Glycine Attenuates Myocardial Fibrosis in Myocardial Infarction in Rats Partly through Modulating Signal Transducer and Activator of Transcription 3/Nuclear Factor-κB/Transforming Growth Factor-β axis  

作　　者：Ning Li Yong Wang Chun Li Xu Chen Xue-Feng Zhang Nan Nan Tan Yi-Qin Hong Ming-Yan Shao Bing-Hua Tang Dong-Qing Guo 

机构地区：[1]School of Life Science,Beijing University of Chinese Medicine,Beijing,China [2]College of Traditional Chinese Medicine,Beijing University of Chinese Medicine,Beijing,China [3]Modern Research Center of Traditional Chinese Medicine,School of Traditional Chinese Material Medica,Beijing University of Chinese Medicine,Beijing,China

出　　处：《World Journal of Traditional Chinese Medicine》2024年第2期263-270,共8页世界中医药杂志（英文）

基　　金：supported by grants from Excellent Youth Foundation of BUCM (No. BUCM-2019-JCRC005);Beijing Excellent Talent Support Project (No. 2017000020124G294)。

摘　　要：Objective: Inflammation and fibrosis are strongly associated with each other. Glycine is present in various traditional Chinese medicines and exhibits anti-inflammatory activity. However, the effects of glycine on myocardial fibrosis(MF) in rats with myocardial infarction(MI) have not been reported. The purpose of this study is to investigate the effects of glycine therapy on MF and comprehend its underlying mechanisms. Materials and Methods: Left anterior descending artery ligation-induced MI in Sprague Dawley rats was leveraged to assess the therapeutic effects of Glycine. Rats received either normal saline or glycine(0.5 mg/g bodyweight) for 7 days. Results: Glycine upregulated cardiac ejection fraction and fractional shortening to improve cardiac function, as evaluated by echocardiography. Histological and immunohistochemical analyses demonstrated that glycine could decrease inflammatory cell infiltration and alleviate collagen deposition. Western blotting revealed that nuclear factor-κB(NF-κB)-mediated inflammatory signaling was also downregulated by glycine treatment. The expression of signal transducer and activator of transcription 3(STAT3), tumor necrosis factor-α, and transforming growth factor-β(TGF-β) was decreased significantly in the glycine-treated group compared to the model group. Thus, glycine plays a protective role against myocardial ischemia and subsequent MF. Conclusion: The protective effects of glycine were achieved partly through STAT3/NF-κB/TGF-β signaling pathway.

关 键 词：GLYCINE myocardial fibrosis signal transducer and activator of transcription 3/nuclear factor-κB/transforming growth factor-β 

分 类 号：R542.22[医药卫生—心血管疾病]