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1、中国环境科学2010,30(5)：699~704ChinaEnvironmentalScience类二多氯联苯对赤子爱胜蚓生理活性的影响1,21*211卜元卿,骆永明,单正军,滕应,李振高(1.中国科学院南京土壤研究所,土壤环境与污染修复重点实验室,江苏南京210008；2.环境保护部南京环境科学研究所,江苏南京210042)摘要：通过人工土壤法,研究0.1,1,10,100,1000µg/kg类二多氯联苯暴露浓度对赤子爱胜蚓(Eiseniafetida)抗氧化酶(SOD酶、CAT酶和GST酶)、抗氧化分子(GSH)、氧化损伤物(MDA)等生理活性指标在第2,7,14,28d时的影响.结果显
2、示,类二多氯联苯刺激赤子爱胜蚓生理活性显著增加(P<0.05),可诱导蚯蚓抗氧化系统应答启动;不同暴露时间下,受试物浓度与蚯蚓生理活性的相关性分析显示,蚯蚓不同生理活性指标对受试物的最佳响应时间不同,Cu-ZnSOD响应最早(7d),SOD,CAT,GSH,MDA次之(14d),GST响应最迟(28d);在最佳响应时间下,受试物暴露浓度对数与生理活性值对数均存在显著的剂量-效应关系(P<0.001)关键词：类二多氯联苯；赤子爱胜蚓；人工土壤；生理活性；剂量-效应中图分类号：X171.5文献标识码：A文章编号：1000-6923(2010)05-0699-061,2Effectofdioxin
3、-likePCBsonphysiologicalactivitiesofearthworms(Eiseniafetida).BUYuan-qing,LUO1*211Yong-ming,SHANZheng-jun,TENGYing,LIZhen-gao(1.KeyLaboratoryofSoilEnvironmentandPollutionRemediation,InstituteofSoilScience,ChineseAcademyofSciences,Nanjing210008,China；2.NanjingInstituteofEnvironmentalScience,Ministry
4、ofEnvironmentProtection,People’sRepublicofChina,Nanjing210042,China).ChinaEnvironmentalScience,2010,30(5)：699~704Abstract：Usingartificialsoiltest,physiologicalactivitiesinearthworms(Eiseniafoetida),whichincludedsuperoxidedismutase(SOD,Cu-ZnSOD),catalase(CAT)andgulathione-S-transferase(GST),andother
5、biochemicalactivities,suchasGSHandMDA,exposedtodioxin-likePCBsatthelevelsof0.1,1,10,100,1000µg/kg,wereobservedafter2,7,14and28dexposure.Dioxin-likePCBscouldsignificantlyincreaseSOD,Cu-ZnSOD,CAT,GSTactivitiesandGSHandMDAlevels(P<0.05),andinducestartingofantioxidantsystemsintheearthworms.Therelations
6、hipsresultsshowedthatthebestresponsetimesofvariousphysiologicalactivitiesinearthwormstodioxin-likePCBsweredifferent.ThebestresponsetimeofCu-ZnSODactivitieswas7days,whereasthatofGSTactivitieswas28days.Thebestresponsetimesofothersphysiologicalactivitieswereall14days.Duringthebestresponsetimes,therewe
7、resignificantlydose-responserelationshipsbetweenthedioxin-likeconcentrationslogarithmsandphysiologicalactivitieslogarithms(P<0.001).Keywords：dioxin-likePCBs；earthworm(Eiseniafetida)；artificialsoil；physiolog
