Trans-anethole attenuates diet-induced nonalcoholic steatohepatitis through suppressing TGF-β-mediated fibrosis

Clin Res Hepatol Gastroenterol. 2022 Apr;46(4):101833. doi: 10.1016/j.clinre.2021.101833. Epub 2021 Nov 14.

Abstract

Background: Nonalcoholic Steatohepatitis (NASH) is the most severe type of non-alcoholic fatty liver disease (NAFLD) and one of the most common chronic liver diseases, leading to the increased risk of liver failure, cirrhosis and hepatocellular carcinoma. Trans-anethole was reported to have anti-inflammatory, anti-obesity and anti-diabetic activities. However, its role in NASH remains unknown. Therefore, we aimed to explore the effect of Trans-anethole on NASH.

Methods: Eight-week-old C57BL/6 mice were fed on a methionine- and choline-deficient (MCD) diet for 8 weeks to induce NASH in mice, and on the meanwhile, mice were also orally administrated with or without 100 mg/kg Trans-anethole daily to evaluate the effect of Trans-anethole on NASH.

Results: Trans-anethole dose-dependently ameliorated liver injury in MCD diet-fed mice, then the most effective dose of Trans-anethole 100 mg/kg was chosen. Trans-anethole significantly attenuated hepatic steatosis, inflammation and hepatic fibrosis in MCD diet-induced NASH mice. Moreover, Trans-anethole reduced hepatic fibrosis by inhibiting transforming growth factor-beta signaling pathway both in vivo and in vitro.

Conclusion: Trans-anethole effectively ameliorated NASH in MCD diet-fed mice, which suggested that Trans-anethole might serve as a therapeutic strategy for NASH.

Keywords: Fibrosis; Inflammation; NASH; Steatosis; TGF-β; Trans-anethole.

MeSH terms

  • Allylbenzene Derivatives* / therapeutic use
  • Animals
  • Anisoles* / therapeutic use
  • Choline
  • Diet / adverse effects
  • Liver / pathology
  • Liver Cirrhosis / drug therapy
  • Liver Cirrhosis / prevention & control
  • Methionine
  • Mice
  • Mice, Inbred C57BL
  • Non-alcoholic Fatty Liver Disease* / drug therapy
  • Non-alcoholic Fatty Liver Disease* / etiology
  • Transforming Growth Factor beta / metabolism

Substances

  • Allylbenzene Derivatives
  • Anisoles
  • Transforming Growth Factor beta
  • Methionine
  • Choline
  • anethole