镉对中间球海胆性腺脂质过氧化的影响  

The effect of cadmium on lipid peroxidation in gonad of sea urchin Strongylocentrotus intermedius

作　　者：王秋实[1] 李霞[1] 李丽萍[1] 

机构地区：[1]大连水产学院农业部海洋水产增养殖学与生物技术重点开放实验室,辽宁大连116023

出　　处：《大连水产学院学报》2007年第4期270-272,共3页Journal of Dalian Fisheries University

基　　金：大连市科技项目资助(2003B1NS283)

摘　　要：研究了不同浓度的镉离子对中间球海胆Strongylocentrotus intermedius性腺超氧化物歧化酶(S0D)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GPx)的活性以及丙二醛(MDA)含量的影响。结果显示:低浓度的镉能激活海胆性腺SOD、CAT和GPx的活性,但随着镉离子浓度的增加和时间的延长,3种酶活性都受到不同程度的抑制;各试验组MDA的含量显著高于对照组。说明镉能引起海胆性腺脂质过氧化损伤。The effect of cadmium on the activities of superoxide dismutase （SOD）, catalase （CAT）, glutathione peroxidase （GPx） and the content of malondialdehyde（MDA） were observed in gonad of sea urchin Strongylocentrotus intermedius. The results showed that there were higher activities of SOD, CAT, and GPx at low Cd concentrations. The activities of the former three antioxidant enzymes, however, were inhibited with the enhancement of the concentrations and the exposure prolonging. On the other hand, there were significantly higher MDA levels in the gonad in the Cd -exposed group than that in the control, indicating that cadmium causes the lipid peroxidation increase in the gonad of the sea urchin.

关 键 词：中间球海胆 镉 性腺 超氧化物歧化酶 过氧化氢酶 谷胱甘肽过氧化物酶 丙二醛 

分 类 号：Q544[生物学—生物化学]