HEPATIC SPECIFIC ANTIOXIDANT RESPONSES IN PELTEOBAGRUS FULVIDRACO FOLLOWING A SHORT-TERM EXPOSURE TO PHENANTHRENE

文献类型： 外文期刊

第一作者： Chen, Ling

作者： Chen, Ling;Wu, Ling-Ling;Hou, Jun-Li;Zhuang, Ping

作者机构：

关键词： Phenanthrene;Yellow catfish;Relative enzymatic activity;Oxidative stress

期刊名称：FRESENIUS ENVIRONMENTAL BULLETIN （ 影响因子：0.489； 五年影响因子：0.479 ）

ISSN： 1018-4619

年卷期： 2011 年 20 卷 5A 期

页码：

收录情况： SCI

摘要： Phenanthrene (PHE) is among the most abundant and ubiquitous polycyclic aromatic hydrocarbons (PAHs) in the aquatic environment as a result of human activities. In this study, juvenile yellow catfish (Pelteobagrus fulvidraco) was exposed to 0.05 mu g/L and 100 mu g/L of waterborne PHE during 14 days. Hepatic enzymatic antioxidants such as superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx) were quantified. The. ratio of specific antioxidant enzyme activity from treatments to the controls was expressed as an index, the relative enzymatic activity (REA). Hepatic SOD exposed to 0.05 mu g/L PHE was induced significantly (P < 0.05) at day 0.25, 1, 3 and 14 except at day 7. Whereas, the SOD of 100 mu g/L PHE treatment declined significantly at day 0.25 (P < 0.05), and recovered to the control level at day 1 or day 3 following increased at day 7 or day 14. Hepatic CAT of both treatments were declined with the exposure duration before day 14, and gradually increased at day 14 Hepatic GPx exposed to 0.05 and 100 mu g/L PHE significant induced to the highest level at day 0.25 and day 3 respectively, and they tended to recover at day 14. Overall, the results indicate that yellow catfish is susceptible to the waterborne PHE that even in 0.05 mu g/L could affect the antioxidant defense systems in liver, and demonstrate a higher adaptive competence expressed as hepatic antioxidant enzyme activation. So we considered that the hepatic antioxidant enzyme of yellow catfish has potential to be a sensitive biomarker of PHE exposure.

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