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Fibroblast growth factor (FGF21) protects mouse liver against D-galactose-induced oxidative stress and apoptosis via activating Nrf2 and PI3K/Akt pathways
作者: Yu, Yinhang1; Bai, Fuliang1; Liu, Yaonan1; Yang, Yongbi1; Yuan, Qingyan1; Zou, Dehua2; Qu, Susu3; Tian, Guiyou1; Song, Liying1; Zhang, Tong1; Li, Siming4; Liu, Yunye1; Wang, Wenfei1,5; Ren, Guiping1,5; Li, Deshan1,5
文章类型: Article
关键词: FGF21 ; D-Gal ; Nrf2-mediated antioxidant capacity ; PI3K/AKT ; Apoptosis
刊名: MOLECULAR AND CELLULAR BIOCHEMISTRY
ISSN号: 0300-8177
出版日期: 2015-05-01
卷号: 403, 期号:1-2, 页码:287-299
收录类别: SCI
英文摘要: FGF21 is recently discovered with pleiotropic effects on glucose and lipid metabolism. However, the potential protective effect of FGF21 against D-gal-induced injury in the liver has not been demonstrated. The aim of this study is to investigate the pathophysiological role of FGF21 on hepatic oxidative injury and apoptosis in mice induced by D-gal. The 3-month-old Kunming mice were subcutaneously injected with D-gal (180 mg kg(-1) d(1)) for 8 weeks and administered simultaneously with FGF21 (5 or 1 mg kg(-1) d(1)). Our results showed that the administration of FGF21 significantly alleviated histological lesion including structure damage, degeneration, and necrosis of hepatocytes induced by D-gal, and attenuated the elevation of liver injury markers, serum AST, and ALP in a dosedependent manner. FGF21 treatment also suppressed D-galinduced profound elevation of ROS production and oxidative stress, as evidenced by an increase of the MDA level and depletion of the intracellular GSH level in the liver, and restored the activities of antioxidant enzymes SOD, CAT, GSH-Px, and T-AOC. Moreover, FGF21 treatment increased the nuclear abundance of Nrf2 and subsequent up regulation of several antioxidant genes. Furthermore, a TUNEL assay showed that D-gal-induced apoptosis in the mouse liver was significantly inhibited by FGF21. The expression of caspase-3 was markedly inhibited by the treatment of FGF21 in the liver of D-gal-treated mice. The levels of PI3K and PBK/Akt were also largely enhanced, which in turn inactivated pro-apoptotic signaling events, restoring the balance between pro-and anti-apoptotic Bcl-2 and Bax proteins in the liver of D-gal-treated mice. In conclusion, these results suggest that FGF21 protects the mouse liver against D-gal-induced hepatocyte oxidative stress via enhancing Nrf2-mediated antioxidant capacity and apoptosis via activating PI3K/Akt pathway.
语种: 英语
WOS记录号: WOS:000355432700028
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.psych.ac.cn/handle/311026/13375
Appears in Collections:健康与遗传心理学研究室_期刊论文

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作者单位: 1.Northeast Agr Univ, Biopharmaceut Lab, Life Sci Coll, Harbin 150030, Peoples R China
2.Heilongjiang Bayi Agr Univ, Daqing 163319, Peoples R China
3.Chinese Acad Sci, Inst Psychol, Beijing 100101, Peoples R China
4.Harbin Univ Commerce, Harbin 150028, Peoples R China
5.Northeast Agr Univ, Key Lab Agr Biol Funct Gene, Harbin 150030, Peoples R China

Recommended Citation:
Yu, Yinhang,Bai, Fuliang,Liu, Yaonan,et al. Fibroblast growth factor (FGF21) protects mouse liver against D-galactose-induced oxidative stress and apoptosis via activating Nrf2 and PI3K/Akt pathways[J]. MOLECULAR AND CELLULAR BIOCHEMISTRY,2015,403(1-2):287-299.
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