Journal
CELLULAR PHYSIOLOGY AND BIOCHEMISTRY
Volume 49, Issue 5, Pages 1870-1884Publisher
KARGER
DOI: 10.1159/000493650
Keywords
AMPK; CPT-1; Fisetin; FL83B; Lipolysis; Nonalcoholic fatty liver disease
Categories
Funding
- Chang Gung Memorial Hospital [CMRPF1G0231, CMRPF1F0083, CMRPF1C0201]
- Ministry of Science and Technology in Taiwan [106-2320-B-255-008-MY3, 106-2320-B-255-007-MY3]
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Background/Aims: Fisetin is a naturally abundant flavonoid isolated from various fruits and vegetables that was recently identified to have potential biological functions in improving allergic airway inflammation, as well as anti-oxidative and anti-tumor properties. Fisetin has also been demonstrated to have anti-obesity properties in mice. However, the effect of fisetin on nonalcoholic fatty liver disease (NAFLD) is still elusive. Thus, the present study evaluated whether fisetin improves hepatic steatosis in high-fat diet (HFD)-induced obese mice and regulates lipid metabolism of FL83B hepatocytes in vitro. Methods: NAFLD was induced by HFD in male C57BL/6 mice. The mice were then injected intraperitoneally with fisetin for 10 weeks. In another experiment, FL83B cells were challenged with oleic acid to induce lipid accumulation and treated with various concentrations of fisetin. Results: NAFLD mice treated with fisetin had decreased body weight and epididymal adipose tissue weight compared to NAFLD mice. Fisetin treatment also reduced liver lipid droplet and hepatocyte steatosis, alleviated serum free fatty acid, and leptin concentrations, significantly decreased fatty acid synthase, and significantly increased phosphorylation of AMPK alpha and the production of sirt-1 and carnitine palmitoyltransferase I in the liver tissue. In vitro, fisetin decreased lipid accumulation and increased lipolysis and beta-oxidation in hepatocytes. Conclusion: This study suggests that fisetin is a potential novel treatment for alleviating hepatic lipid metabolism and improving NAFLD in mice via activation of the sirt1/AMPK and beta-oxidation pathway. (C) 2018 The Author(s) Published by S. Karger AG, Basel
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