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Evaluation of tributyltin toxicity in Chinese rare minnow larvae by abnormal behavior, energy metabolism and endoplasmic reticulum stress

文献类型： 外文期刊

作者： Li, Zhi-Hua 1 ; Li, Ping 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Key Lab Freshwater Biodivers Conservat, Key Field Stn Fishery Resource & Environm Upper M, Minist Agr,Yangtze River Fisheries Res Inst, Wuhan 430223, Peoples R China; Univ South Bohemia Ceske Budejovice, Fac Fisheries & Protect Waters, South Bohemian Res Ctr Aquaculture & Biodivers Hy, Res Inst Fish Culture & Hydrobiol, Vodnany 38925, Czech Republic

关键词： Fish;Tributyltin;Behavior;Energy metabolism;Endoplasmic reticulum stress

期刊名称：CHEMICO-BIOLOGICAL INTERACTIONS （ 影响因子：5.192； 五年影响因子：4.61 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Tributyltin (TBT) is a ubiquitous contaminant in aquatic environment, but the detailed mechanisms underlying the toxicity of TBT have not been fully understood. In this study, the effects of TBT on behavior, energy metabolism and endoplasmic reticulum (ER) stress were investigated by using Chinese rare minnow larvae. Fish larvae were exposed at sublethal concentrations of TBT (100, 400 and 800 ng/L) for 7 days. Compared with the control, energy metabolic parameters (RNA/DNA ratio, Na+-K+-ATPase) were significantly inhibited in fish exposed at highest concentration (800 ng/L), as well as abnormal behaviors observed. Moreover, we found that the PERK (PKR-like ER kinase) eIF2 alpha, (eukaryotic translation initiation factor 2 alpha) pathway, as the main branch was activated by TBT exposure in fish larvae. In short, TBT-induced physiological, biochemical and molecular responses in fish larvae were reflected in parameters measured in this study, which suggest that these biomarkers could be used as potential indicators for monitoring organotin compounds present in aquatic environment. (C) 2014 Elsevier Ireland Ltd. All rights reserved.

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