Deletion of Nrf2 leads to hepatic insulin resistance via the activation of NF-κB in mice fed a high-fat diet

  • Authors:
    • Zhenxiong Liu
    • Weijia Dou
    • Zhen Ni
    • Qinsheng Wen
    • Rong Zhang
    • Ming Qin
    • Xuxia Wang
    • Hua Tang
    • Ying Cao
    • Jingjie Wang
    • Shuguang Zhao
  • View Affiliations

  • Published online on: June 10, 2016     https://doi.org/10.3892/mmr.2016.5393
  • Pages: 1323-1331
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Abstract

Non-alcoholic fatty liver disease (NAFLD) is the hepatic manifestation of the metabolic syndrome. Insulin resistance (IR) is important in the development and progression of NAFLD. Nuclear erythroid 2‑related factor 2 (Nrf2) has previously been reported to be a novel regulator in NAFLD. The present study determined that Nrf2 knockdown accelerated the onset of obesity and non‑alcoholic steatohepatitis (NASH), via the induction of hepatic IR in mice fed a high‑fat diet (HFD), which was confirmed by an increase in total and hepatic weight in Nrf2‑null‑HFD mice, in addition to marked structural disorder in liver tissues from the Nrf2‑null‑HFD group analyzed by histopathological examination. Subsequently, it was demonstrated that hepatic IR in Nrf2‑null‑HFD mice was influenced by oxidative stress; this was confirmed by an increase in malondialdehyde levels and a decrease in glutathione levels. In addition, it was determined that the induction of hepatic IR by Nrf2 knockdown in HFD-treated mice was regulated by activation of the nuclear factor‑κB (NF‑κB) signaling pathway, as detected by an increase in the expression levels of nuclear NF‑κB, and its downstream effectors interleukin‑6 and tumor necrosis factor‑α. The present study provides insight into the function of Nrf2 in NAFLD, indicating that Nrf2 deletion may lead to hepatic IR by activation of NF‑κB, which is often associated with oxidative stress. Therefore, activation of Nrf2 may limit disease progression and act as a therapeutic approach for the treatment of NASH.
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August-2016
Volume 14 Issue 2

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Liu Z, Dou W, Ni Z, Wen Q, Zhang R, Qin M, Wang X, Tang H, Cao Y, Wang J, Wang J, et al: Deletion of Nrf2 leads to hepatic insulin resistance via the activation of NF-κB in mice fed a high-fat diet. Mol Med Rep 14: 1323-1331, 2016
APA
Liu, Z., Dou, W., Ni, Z., Wen, Q., Zhang, R., Qin, M. ... Zhao, S. (2016). Deletion of Nrf2 leads to hepatic insulin resistance via the activation of NF-κB in mice fed a high-fat diet. Molecular Medicine Reports, 14, 1323-1331. https://doi.org/10.3892/mmr.2016.5393
MLA
Liu, Z., Dou, W., Ni, Z., Wen, Q., Zhang, R., Qin, M., Wang, X., Tang, H., Cao, Y., Wang, J., Zhao, S."Deletion of Nrf2 leads to hepatic insulin resistance via the activation of NF-κB in mice fed a high-fat diet". Molecular Medicine Reports 14.2 (2016): 1323-1331.
Chicago
Liu, Z., Dou, W., Ni, Z., Wen, Q., Zhang, R., Qin, M., Wang, X., Tang, H., Cao, Y., Wang, J., Zhao, S."Deletion of Nrf2 leads to hepatic insulin resistance via the activation of NF-κB in mice fed a high-fat diet". Molecular Medicine Reports 14, no. 2 (2016): 1323-1331. https://doi.org/10.3892/mmr.2016.5393