Zearalenone induces oxidative damage involving Keap1/Nrf2/HO-1 pathway in hepatic L02 cells

文献类型: 外文期刊

第一作者: Wu, Kejia

作者: Wu, Kejia;Liu, Xin;Fang, Min;Gong, Zhiyong;Wu, Kejia;Liu, Xin;Fang, Min;Gong, Zhiyong;Wu, Yongning

作者机构:

关键词: Zearalenone;Keap1;Nrf2;HO-1;Antioxidant enzyme

期刊名称:MOLECULAR & CELLULAR TOXICOLOGY ( 影响因子:1.08; 五年影响因子:1.184 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: Zearalenone (ZEA), a mycotoxin produced by Fusarium fungi, is found in cereal crops. Although the toxic effects of ZEA have been well characterized, the mechanism is not clear, especially with respect to the oxidative damage. In this study, we determined superoxide dismutase (SOD) and malondialdehyde (MDA) levels as indexes of oxidative damage caused by ZEA and itivestigated whether the damage involved Keap1/Nrf2/HO-1 pathway in hepatic L02 cells. The results indicated that ZEA induced cytotoxicity in L02 cells by reducing cell viability, inhibiting SOD activity and increasing MDA levels. ZEA also altered mRNA and protein expressions of antioxidant genes including Keapl, Nrf2 and its downstream gene HO-1. Furthermore, simultaneous treatment with ZEA and tertiary butylhydroquinone (t-BHQ, and inducer of Nrf2) could restore HO-1 expression level compared with exposed to ZEA alone. In summary, ZEA probably induces oxidative damage through a pathway which involves Keapl up-regulation, Nrf2 and HO-1 down-regulation.

分类号: Q7

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