| 镉对鲫鱼肝胰脏CAT和SOD活性的影响 |
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| 引用本文： | 胡蓉,唐正义.镉对鲫鱼肝胰脏CAT和SOD活性的影响[J].西南农业大学学报,2011,33(8). |
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| 作者姓名： | 胡蓉 唐正义 |
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| 作者单位： | 内江师范学院生命科学学院; |
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| 基金项目： | 四川省教育厅自然科学类重点资助项目(07ZC032) |
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| 摘 要： | 为了探索不同质量浓度Cd2+胁迫对过氧化氢酶(CAT)和超氧化物歧化酶(SOD)活性的影响,以鲫鱼为材料,采用急性毒性试验,研究了质量浓度为0.5,2.0,6.0mg/L的Cd2+溶液染毒24,48,72,96h后,鲫鱼肝胰脏CAT和SOD活性变化.结果表明:在试验剂量范围内,0.5,2.0mg/L的Cd2+对鲫鱼肝胰脏CAT活性有诱导作用,6.0mg/L的Cd2+对CAT活性有抑制作用;0.5mg/L的Cd2+对鲫鱼肝胰脏SOD活性有诱导作用,2.0,6.0mg/L的Cd2+对SOD活性有抑制作用;Cd2+胁迫对鲫鱼CAT和SOD活性的影响呈剂量效应,二者关系曲线为抛物线,抛物线顶点是鲫鱼对Cd2+污染从适应到中毒反应的阈值,可间接作为检测环境污染情况的指标.但SOD对Cd2+污染的反应比CAT更灵敏,用SOD监测Cd2+污染具有更好的效果.
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| 关 键 词： | 镉 鲫鱼 过氧化氢酶 超氧化物歧化酶 毒性效应 |
Effect of Cadmium on Activities of Catalase and Superoxide Dismutase from Hepatopancreas of Carassius auratus |
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| HU Rong,TANG Zheng-yi College of Life Science,Neijiang Normal University,Neijiang Sichuan ,China.Effect of Cadmium on Activities of Catalase and Superoxide Dismutase from Hepatopancreas of Carassius auratus[J].Journal of Southwest Agricultural University,2011,33(8). |
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| Authors: | HU Rong TANG Zheng-yi College of Life Science Neijiang Normal University Neijiang Sichuan China |
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| Institution: | HU Rong,TANG Zheng-yi College of Life Science,Neijiang Normal University,Neijiang Sichuan 641100,China |
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| Abstract: | In an acute toxicity test,Carassius auratus was exposed to a Cd2+ solution at 0.5,2.0 or 6.0 mg/L for 24,48,72 or 96 h,and the activities of CAT and SOD from the hepatopancreas were determined.The results showed that within the experimental dose range,the activity of CAT was enhanced in the presence of 0.5 or 2.0 mg/L of Cd2+ and was inhibited by 6.0 mg/L of Cd2+ and that the activity of SOD was enhanced in the presence of 0.5 mg/L of Cd2+ and was inhibited by 2.0 or 6.0 mg/L of Cd2+.The dose-effect relatio... |
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| Keywords: | cadmium Carassius auratus catalase superoxide dismutase toxicity effect |
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