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Amelioration of Nonalcoholic Fatty Liver Disease by Swertiamarin in Fructose-Fed Mice

Yang Yang, Jing Li, Cong Wei, Ying He, Yixin Cao, Yongmin Zhang, Wenji Sun, Boling Qiao, Jiao He

Phytomedicine. 2019 Jun;59:152782.

PMID: 31005808

Abstract:

Background:
Nonalcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disease. Swertia bimaculata (Sieb. et Zucc.) Hook. Thoms.ex Clarke, a glabrous or procumbent perennial herb, is a traditional herb medicine. Swertiamarin, a secoiridoid glycoside, is a representative ingredient in this medical plant crude extract and shows antidiabetic and antihyperlipidaemic activities and protective effect against hepatic injury.
Purpose:
The present study aimed to determine whether swertiamarin can attenuate NAFLD in fructose-fed mice.
Methods:
Healthy male mice freely drank water containing 10% fructose for 12 consecutive weeks, whereas animals in those swertiamarin tested groups received different doses of swertiamarin (25, 50 and 100 mg/kg) by intragastric administration once a day from the ninth week to the twelfth week.
Results:
At the end of the experiment, fructose-fed mice administrated with swertiamarin showed low levels of serum glucose, triglycerides, uric acid, alanine aminotransferase and aspartate transaminase. Histological examinations suggested the alleviation of hepatic ballooning degeneration and steatosis by swertiamarin treatment. Moreover, swertiamarin administration mitigated hepatic oxidative stress along with decreases of hepatic pro-inflammation cytokines, which was associated with decrease of hepatic xanthine oxidase (XO) activity and enhancements of anti-oxidant defense system enzymes, as well as activation of nuclear factor E2-related factor 2 (Nrf2) in fructose-fed mice. In addition, swertiamarin down-regulated expression of sterol-regulatory element-binding protein-1 (SREBP-1), fatty acid synthase (FAS) and acetyl-CoA carboxylase 1 (ACC1) in liver of fructose-fed mice.
Conclusion:
The present study demonstrates that swertiamarin alleviates NAFLD and metabolic alterations in fructose-fed mice.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP17388395-A Swertiamarin Swertiamarin 17388-39-5 Price
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