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Temperature Affects Hg-Induced Antioxidant Responses in Chinese Rare Minnow Gobiocypris rarus Larvae In Vitro

文献类型: 外文期刊

作者: Li, Zhi-Hua 1 ; Li, Ping 1 ; Chen, Lu 1 ;

作者机构: 1.Chinese Acad Fishery Sci, Key Field Stn Fishery Resource & Environm Upper M, Key Lab Freshwater Biodivers Conservat, Minist Agr,Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China

2.Univ South Bohemia Ceske Budejovice, Res Inst Fish Culture & Hydrobiol, Fac Fisheries & Protect Waters, South Bohemian Res Ctr Aquaculture & Biodivers Hy, Vodnany 38925, Czech Republic

关键词: Mercury;Temperature;Chinese rare minnow;Antioxidant response;In vitro

期刊名称:BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY ( 影响因子:2.151; 五年影响因子:2.129 )

ISSN:

年卷期:

页码:

收录情况: SCI

摘要: The effect of temperature on HgCl2 (Hg2+)induced oxidative stress to Chinese rare minnow (Gobio-cypris rarus) was evaluated in vitro. Malondialdehyde (MDA) content and superoxide dismutase, catalase and glutathione peroxidase activities were determined in whole body homogenates incubated with 0.1 mg/L Hg2+ at 15, 25 and 35 degrees C for 60 min. The result showed that oxidative stress was at a normal level in the Hg2+ + NT (0.1 mg/L Hg2+ and normal temperature, 25 degrees C) and Hg2+ + LT (0.1 mg/L Hg2+ and low temperature, 15 degrees C) groups, but a significant induction in oxidative stress occurred in the Hg2+ + HT (35 degrees C) group. This was reflected by an increased level of MDA and decreased activities of the antioxidant enzymes. The results suggest that higher temperature enhances heavy metal toxicity in aquatic systems, which should be given more attention in the future.

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