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Qinlian Hongqu Decoction Modulates FXR/TGR5/GLP-1 Pathway to Improve Insulin Resistance in NAFLD Mice: Bioinformatics and Experimental Study

胰岛素抵抗 汤剂 G蛋白偶联胆汁酸受体 医学 药理学 内分泌学 内科学 胰岛素 受体
作者
Zhongyi Zhang,Yantao He,Mei Zhao,Xin He,Zubing Zhou,Yuanyuan Yue,Tao Shen,Juncheng Liu,Gan Zhang,Yong Zhang
出处
期刊:ACS omega [American Chemical Society]
卷期号:9 (45): 45447-45466
标识
DOI:10.1021/acsomega.4c07463
摘要

Background: Qinglian Hongqu decoction (QLHQD), a traditional Chinese herbal remedy, shows potential in alleviating metabolic issues related to nonalcoholic fatty liver disease (NAFLD). However, its precise mode of action remains uncertain. Objective: This study aims to evaluate the efficacy and mechanisms of QLHQD in treating NAFLD. Methods: This study utilized a NAFLD mouse model to assess the effects of QLHQD on lipid metabolism, including blood lipids and hepatic steatosis, as well as glucose metabolism, including blood glucose levels, OGTT results, and serum insulin. Network pharmacology, bioinformatics, and molecular docking were used to explore how QLHQD may improve NAFLD treatment. Key proteins involved in these mechanisms were validated via WB and immunohistochemistry. Additionally, the expression of downstream pathway targets was examined to further validate the insulin resistance mechanism by which QLHQD improves NAFLD. Results: Animal studies demonstrated that QLHQD alleviated lipid abnormalities, hepatic steatosis, blood glucose levels, the insulin resistance index, and the OGTT results in NAFLD mice (P < 0.05 or 0.01). Network pharmacology and bioinformatics analyses indicated that the effects of QLHQD on NAFLD might involve bile acid secretion pathways. Subsequent validation through Western blotting, immunohistochemistry, and qPCR demonstrated that QLHQD may influence fat metabolism and insulin sensitivity in NAFLD mice via the FXR/TGR5/GLP-1 signaling pathway. Conclusion: QLHQD significantly alleviates glucose and lipid metabolism disorders in a high-fat diet-induced NAFLD mouse model. Its mechanism of action may involve the activation of the FXR/TGR5/GLP-1 signaling pathway in the gut, which reduces lipid accumulation and insulin resistance.

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