| 镉污染对鲢抗氧化防御系统影响研究 |
| |
| 引用本文： | 吕景才,宋晓阳,王凡,赵元凤,孙静,潘德建,侯美艳,刘恒明.镉污染对鲢抗氧化防御系统影响研究[J].西南农业大学学报,2002,24(6):491-493,505. |
| |
| 作者姓名： | 吕景才 宋晓阳 王凡 赵元凤 孙静 潘德建 侯美艳 刘恒明 |
| |
| 作者单位： | 大连大产学院养殖系，辽宁大连116023 |
| |
| 基金项目： | 辽宁省科委基金项目资助 (0 0 1 0 55)，辽宁省教育厅项目资助 (2 0 1 0 1 2 33) |
| |
| 摘 要： | 采用毒性实验方法，研究了不同浓度的镉（Cd^2 ）对鲢几种组织内抗氧化防御系统酶－超氧化物歧化酶（SOD）活性的影响。结果表明，在实验剂量范围内，Cd^2 对鲢几种组织内SOD活性均有不同程度诱导，其剂量－效应曲线均为抛物线，即低浓度Cd^2 对SOD超诱导作用，高浓度则起抑制作用。不同组织内SOD对Cd^2 的敏感性不同，按敏感性大小顺序排列为：血清＞肝脏＝鳃＞肌肉；按Cd^2 对不同组织SOD活性最大诱导倍数高低次序排列为：血清＞肝脏＞鳃＞肌肉；表明，灵敏指示Cd^2 对鲢胁迫程度的优选组织是血清，其次是肝脏。
|
| 关 键 词： | 镉污染 鲢 抗氧化防御系统 影响 超氧化物歧化酶 淡水鱼类 |
| 文章编号： | 1000-2642(2002)06-0491-03 |
THE EFFECTS OF CADMIUM POLLUTION ON THE ANTIOXIDANT DEFENSE SYSTEM OF ARISTCHTHUS NOBILIS |
| |
| Abstract: | A toxic experiment was made to study the effect of different concentration of cadmium (Cd 2+ ) on the activity of the antioxidant defense system, i.e. superoxide dismutase (SOD) in different tissues, of Aristchthys nobilis. The results showed that within the dosages adopted in the experiment, Cd 2+ induced, in different degrees, SOD activity in the tissues of Aristchthys nobilis . The dosage-effect curves were all parabolic, suggesting that low concentration of Cd 2+ induced SOD while high Cd 2+ concentration inhibited it. The sensitivity of SOD to Cd 2+ differed with tissue, being serum > liver = gill >muscle, and the maximal induction multiple sequence of Cd 2+ on SOD appeared to be serum > liver > gill > muscle. Such results showed that the optimum seeking tissue for the indication of Cd 2+ coercion on Aristchthys nobilis should be serum, followed by liver. |
| |
| Keywords: | Aristchthys nobilis superoxide dismutase (SOD) cadmium (Cd 2+ ) |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《西南农业大学学报》浏览原始摘要信息 |
| 点击此处可从《西南农业大学学报》下载免费的PDF全文 |
