Background Vitamin E has been reported to have a beneficial effect on nonalcoholic fatty liver disease (NAFLD); however, the underlying mechanism of action has not yet been clearly defined. Aim We aimed to evaluate the effects and mechanisms of vitamin E on lipid and glucose homeostasis both in vivo and in vitro. Methods An NAFLD model was established in C57BL/6 mice fed a 30% fructose solution for 8 weeks. Subsequently, NAFLD mice were given vitamin E (70 mg/kg) for 2 weeks. In addition, L02 cells were treated with 5 mM fructose and 100 nM vitamin E to explore the potential mechanisms of action. Results Vitamin E reversed the impaired glucose tolerance of fructose-treated mice. Histopathological examination showed that liver steatosis was significantly relieved in vitamin E-treated mice. These effects may be attributed to the upregulation of nuclear factor erythroid-2-related factor 2 (Nrf2), carboxylesterase 1 (CES1), and downregulated proteins involved in lipid synthesis by vitamin E treatment. In vivo, vitamin E also significantly reduced lipid accumulation in fructose-treated L02 cells, and the Nrf2 inhibitor ML385 reversed the protective effects of vitamin E. Conclusion These data indicated that the therapeutic effects of vitamin E on lipid and glucose homeostasis may be associated with activation of the Nrf2/CES1 signaling pathway.
基金:
National Natural Science Foundation of China (NSFC) [81670521]; Hubei provincial health and Family Planning Commission [ZY2019Z003]; Hubei Provincial Natural Science Foundation of China [2018CFB583]; National Major Scientific and Technological Special Project for "Significant New Drugs Development" [2017ZX09304022]
第一作者单位:[1]Huazhong Univ Sci & Technol, Tongji Hosp, Tongji Med Coll, Dept Pharm, Wuhan, Hubei, Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
He Wenxi,Xu Yanjiao,Ren Xiuhua,et al.Vitamin E Ameliorates Lipid Metabolism in Mice with Nonalcoholic Fatty Liver Disease via Nrf2/CES1 Signaling Pathway[J].DIGESTIVE DISEASES AND SCIENCES.2019,64(11):3182-3191.doi:10.1007/s10620-019-05657-9.
APA:
He, Wenxi,Xu, Yanjiao,Ren, Xiuhua,Xiang, Dong,Lei, Kai...&Liu, Dong.(2019).Vitamin E Ameliorates Lipid Metabolism in Mice with Nonalcoholic Fatty Liver Disease via Nrf2/CES1 Signaling Pathway.DIGESTIVE DISEASES AND SCIENCES,64,(11)
MLA:
He, Wenxi,et al."Vitamin E Ameliorates Lipid Metabolism in Mice with Nonalcoholic Fatty Liver Disease via Nrf2/CES1 Signaling Pathway".DIGESTIVE DISEASES AND SCIENCES 64..11(2019):3182-3191