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Abstract Title:

Naringin improves lipid metabolism in a tissue-engineered liver model of NAFLD and the underlying mechanisms.

Abstract Source:

Life Sci. 2021 Apr 20 ;277:119487. Epub 2021 Apr 20. PMID: 33862107

Abstract Author(s):

Xiaohui Zhang, Yizhi Zhang, Wen Gao, Zhihao Guo, Kun Wang, Shuang Liu, Zhongping Duan, Yu Chen

Article Affiliation:

Xiaohui Zhang

Abstract:

AIMS: Nonalcoholic fatty liver disease (NAFLD) is a lipid metabolism disorder. Naringin (a main active ingredient in Ganshuang granules) is a flavanone that has been demonstrated to exert hepatoprotective and antifibrotic effects. The present study aimed to use a novel tissue-engineered fatty liver model to assess the effects and mechanisms of naringin on NAFLD.

MAIN METHODS: Intracellular triglyceride (TG) was examined by oil red O staining and commercial kits. The proteins associated with lipid metabolism were measured by western blotting and/or qPCR. Very low-density lipoprotein (VLDL) was measured by ELISA. A CCK8 assay was used to assess the cytotoxicity of naringin. Molecular docking was used to predict the interactions and binding patterns between naringin and target proteins.

KEY FINDINGS: Naringin significantly reduced intracellular TG accumulation by 52.7% in tissue-engineered fatty (TEF) livers, and also the level of pyruvate dehydrogenase kinase 4. Naringin downregulated CD36 and proliferator activated-receptorγ expression, reducing the uptake of FFAs; naringin also downregulated de novo liposynthetases by reducing acetyl CoA carboxylase, fatty acid synthetase etc. in TEF livers. Moreover, naringin increased the expression of proliferator activated-receptor α (PPAR-α) and carnitine palmitoyltransferase1 to improve the oxidation of fatty acids. The levels of VLDL secreted from TEF livers were reduced by 24.7% after naringin treatment. Molecular docking analyses determined the bioactivity of naringin through its specific binding to CD36 and PPAR-α.

SIGNIFICANCE: Naringin improved lipid metabolism disorders in TEF livers by reducing fatty acid uptake and de novo lipogenesis and increasing fatty acid oxidation. CD36 and PPAR-α might be specific targets of naringin.

Study Type : In Vitro Study

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Sayer Ji
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