张喆;王学锋;马胜伟;陈海刚;王涛;蔡文贵;贾晓平;

• 1:中国水产科学研究院南海水产研究所广东省渔业生态环境重点实验室
• 2:广东海洋大学水产学院
• 3:青岛中油华东院安全环保有限公司

摘要(Abstract)：

十溴联苯醚(BDE-209)是目前唯一仍在全球范围内广泛使用的多溴联苯醚阻燃剂,其环境行为及生物效应逐渐成为环境污染领域研究的热点。选用2(LD组)、10(MLD组)、50(MHD组)及250μg.L-1(HD组)4个浓度的BDE-209作用于紫红笛鲷,探讨BDE-209对紫红笛鲷鳃抗氧化酶(SOD、CAT及POD)活性和MDA含量的影响。结果显示:BDE-209可以显著促进SOD和CAT活性,且随着暴露时间延长CAT活性呈现逐渐增加的趋势。暴露7d后,MLD组SOD活性达到最高68.31U.mg-1,是对照组(CK)的5.50倍,HD组CAT活性达到6.31U.mL-1,其次为MHD组的5.96U.mL-1。BDE-209对鳃POD活性呈现先促进后抑制的作用,暴露3d时各浓度POD活性均显著高于CK组(P<0.05);7d时各浓度POD活性则受到显著抑制(P<0.05),清水恢复15d后各浓度组与CK组没有显著差异(P>0.05)。暴露期间各浓度组MDA含量均显著高于CK组(P<,并且随暴露时间延长呈现先增加后减少的趋势,7d后HD组MDA含量达到最高,为6.99nmol.mg-1,清水恢复15d后,LD和MLD组MDA含量与CK组没有显著性差异(P>0.05)。以上结果表明:BDE-209可以诱导紫红笛鲷产生氧化应激效应,CAT和SOD则在氧自由基清除中发挥作用。

关键词(KeyWords)： 持久性有机物;十溴联苯醚;紫红笛鲷;抗氧化酶

Abstract:

Keywords:

基金项目(Foundation): 广东省自然基金项目(S2011040005251);; 广东省科技计划项目(2009B030600001);; 中央级公益性科研院所基本科研业务费专项资金项目(2012TS14,2012A0203)

作者(Author): 张喆;王学锋;马胜伟;陈海刚;王涛;蔡文贵;贾晓平;

Email:

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