Folic acid intervention ameliorates hepatic steatosis after long-term alcohol exposure by alleviating endoplasmic reticulum stress.

IF 4.8 2区 医学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY Journal of Nutritional Biochemistry Pub Date : 2025-03-05 DOI:10.1016/j.jnutbio.2025.109896
Huichao Zhao, Man Liu, Yiqing Ma, Ronghuan Du, Wang Bin, Tongtong Lan, Huaqi Zhang, Meilan Xue, Hui Liang
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Abstract

In this study, the protective effect of folic acid on alcoholic fatty liver (AFL) was investigated. Eighty C57BL/6J mice were assigned randomly to the saline control group, folic acid control group, ethanol model group, and folic acid + ethanol model group. After 10 weeks of intervention, folic acid intervention markedly decreased the liver index, serum ALT, serum TG, and hepatic TG levels. The HE and transmission electron microscopy revealed that folic acid intervention alleviated histopathological changes of hepatic steatosis. Western blot revealed that folic acid downregulated the protein levels of GRP78, p-PERK, p-eIF2α, p-IRE1α, XBP1, ATF6, SREBP-1c, FAS, and ACC. In conclusion, our findings demonstrated that folic acid intervention may relieve ethanol-induced ERs by inhibiting PERK-eIF2α, IRE1α-XBP1, and ATF6 signaling pathways, suggesting that folic acid may be a feasible preventive strategy for AFL.

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本研究探讨了叶酸对酒精性脂肪肝(AFL)的保护作用。80只C57BL/6J小鼠被随机分配到生理盐水对照组、叶酸对照组、乙醇模型组和叶酸+乙醇模型组。干预10周后,叶酸干预显著降低了肝指数、血清谷丙转氨酶、血清总胆固醇和肝总胆固醇水平。高倍显微镜和透射电子显微镜显示,叶酸干预减轻了肝脏脂肪变性的组织病理学改变。Western印迹显示,叶酸下调了GRP78、p-PERK、p-eIF2α、p-IRE1α、XBP1、ATF6、SREBP-1c、FAS和ACC的蛋白水平。总之,我们的研究结果表明,叶酸干预可通过抑制 PERK-eIF2α、IRE1α-XBP1 和 ATF6 信号通路来缓解乙醇诱导的 ERs,这表明叶酸可能是一种可行的 AFL 预防策略。
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来源期刊
Journal of Nutritional Biochemistry
Journal of Nutritional Biochemistry 医学-生化与分子生物学
CiteScore
9.50
自引率
3.60%
发文量
237
审稿时长
68 days
期刊介绍: Devoted to advancements in nutritional sciences, The Journal of Nutritional Biochemistry presents experimental nutrition research as it relates to: biochemistry, molecular biology, toxicology, or physiology. Rigorous reviews by an international editorial board of distinguished scientists ensure publication of the most current and key research being conducted in nutrition at the cellular, animal and human level. In addition to its monthly features of critical reviews and research articles, The Journal of Nutritional Biochemistry also periodically publishes emerging issues, experimental methods, and other types of articles.
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