| 铜和锌离子对真鲷幼鱼组织酶活性的影响 |
| 摘要点击 1311 全文点击 2502 投稿时间：1997-12-16 |
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| 中文关键词 铜 锌 真鲷 CAT GPT 胃蛋白酶 |
| 英文关键词 copper zinc Pagrosomus major CAT GPT pepsin |
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| 中文摘要 |
| 研究水中Cu2+、Zn2+对真鲷幼鱼组织CAT、GPT、胃蛋白酶活性的影响。结果表明：真鲷幼鱼暴露于不同浓度Cu2+(0.5、0.75、1.5mg/L)、Zn2+(1、2、4mg/L)海水中4d后,Cu2+、Zn2+对鳃、肝脏CAT,胃蛋白酶都有抑制作用。当Cu2+浓度最大时,对鳃、肝脏CAT,胃蛋白酶抑制率分别为73%、34%和42.8%;当Zn2+浓度最大时,对3种酶活性的抑制率分别为30%、68.5%和32.8%.Cu2+、Zn2+尤其可使真鲷肝脏GPT活性显着降低,当Cu2+、Zn2+浓度最大时,肝脏GPT活性分别是对照组的24%和33%.Cu2+、Zn2+对真鲷幼鱼组织中3种酶活性的抑制作用均有剂量-效应关系. |
| 英文摘要 |
| This paper reported the effects of Cu2+ and Zn2+ on activities of catalase (CAT),glutamic pyruvic transaminase (GPT) and pepsin in the tissues of red sea bream P.major.Red sea breams were exposed to different concentrations of cupric sulfate solution (0.5,0.75,1.5mg/L)and zinc sulfate solution (1,2,4mg/L)for 4 days.The results showed that the CAT activities in gill and liver and pepsin activities were inhibited by Cu2+ and Zn2+.At the highest Cu2+ concentration groups,the CAT activities in gill and in liver and pepsin activities decreased 73%,33% and 42.8% in relation to control,respectively,while at the highest Zn2+ concentration groups,the CAT,GPT and pepsin activities decreased 30%,68.5% and 32.8% in relation to control,respectively.The GPT activities of liver in P.major decreased at all exposure groups.The GPT activities of liver decreased 76% and 67% in relation to control at highest Cu2+ and Zn2+ concentration groups,respectively.The effects of Cu2+ and Zn2+ on the CAT,GPT and pepsin had concentration response relationship. |
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