铜、镉对鲫鱼组织Na^+-K^+-ATPase酶活性的影响  

Effects of Copper and Cadmium on Na^+-K^+-ATPase Activity in Tissues of Carassius auratus

作　　者：贾秀英[1] 陈志伟[1] 

机构地区：[1]杭州师范学院生命科学学院,浙江杭州310036

出　　处：《科技通报》2003年第1期50-53,共4页Bulletin of Science and Technology

基　　金：杭州师范学院重点学科基金资助项目(HNC006)

摘　　要：在实验条件下研究了铜、镉中毒鲫鱼组织Na+-K+-ATPase酶活性的变化.结果表明,受水中Cu2+、Cd2+的影响,Na+-K+-ATPase酶活性呈下降趋势.当水中Cu2+浓度为2、4mg/L时,脑、肝胰脏和鳃的酶活性显著降低,在4mg/L浓度时肾脏的酶活性显著降低;当水中Cd2+浓度为1、2mg/L时,酶活性均显著下降,以肝胰脏、肾脏下降最为明显.An experiment was carried out to study the acute toxicity of Cu2+ and Cd2+ to Carassius auratus at three concentrations(Cu2+:1,2,4 mg/L; Cd2+:0.5,1,2 mg/L). A depressing effect of Cu2+ and Cd2+ on Na+-K+-ATPase activity in the tissues was observed. Cu2+ at 2 and 4 mg/L levels significantly depressed the activity of Na+-K+-ATPase in brain, liver and gill, while the Na+-K+-ATPase in kidney showed a decrease in activity only at 4 mg/L. Cd2+ at 1 and 2 mg/L displayed a clear decrease pattern in terms of the activity of Na+-K+-ATPase in brain, liver, kidney and gill .

关 键 词：铜 镉 鲫鱼 Na^+-K^+-ATPase酶 酶活性 三磷酸腺苷酸酶 重金属污染 致毒机理 

分 类 号：X503.225[环境科学与工程—环境工程]