实验动物与比较医学 ›› 2012, Vol. 32 ›› Issue (4): 304-307.DOI: 10.3969/j.issn.1674-5817.2012.04.010

• 论著 • 上一篇    下一篇

锌对甲基汞染毒大鼠氧化应激损伤的抑制作用

石勇1, 石琦2, 宋祥福1, 刘航3, 阎兆宏4   

  1. 1.吉林大学公共卫生学院卫生检验教研室, 长春 130021;
    2.吉林大学白求恩医学院, 长春 130021;
    3.吉林大学药学院 长春 130021;
    4.吉林大学第一医院 长春130021
  • 收稿日期:2011-12-26 出版日期:2012-08-25 发布日期:2012-08-25
  • 作者简介:石 勇(1962-), 男, 讲师, 从事环境毒理方面研究。 E-mail: syong@jlu.edu.cn

Inhibitive Effects of Zinc on Methylmercury-induced Oxidative Reactive Damage in Rats

SHI Yong1, SHI Qi2, SONG Xiang-fu1, LIU Hang3, Yan Zhao-hong4   

  1. 1. Department of Sanitary Analysis, School of Public Health, Jilin University, Changchun 130021, China;
    2. Norman Bethune College, Jilin University, Changchun 130021, China;
    3. School of Pharmaceutical Sciences, Jilin University, Changchun 130021, China;
    4. The First Hospital, Jilin University, Changchun 130021, China
  • Received:2011-12-26 Online:2012-08-25 Published:2012-08-25

摘要: 目的 探讨锌对甲基汞急性染毒大鼠组织及血液各氧化指标的变化。方法 大鼠随机分为锌+甲基汞组、甲基汞组和对照组,锌+甲基汞组大鼠每日腹腔注射不同剂量硫酸锌,剂量分别为2.86 、5.72、8.58、11.44 mg/kg,第6日甲基汞急性染毒,第7日处死,取大鼠肝、脑、肾及血液分别测定谷胱甘肽过氧化物酶(GSH-Px)活性、超氧化物歧化酶(SOD)活性。结果 随着锌剂量的增加,大鼠组织和血液中GSH-Px活性降低,GSH-Px活性与锌剂量呈显著负相关; 随着锌剂量的增加,大鼠组织和血液中SOD活性增强,锌+MeHg实验组中SOD活性与锌剂量呈显著正相关关系。结论 锌能有效预防甲基汞染毒大鼠的机体损伤。

关键词: 锌, 甲基汞, 超氧化物歧化酶, 谷胱甘肽过氧化物酶, 金属硫蛋白

Abstract: Objective To investigate the changes of tissue and hematological oxidation in acute methyl mercury-contaminated rat. Method The total of rats were randomly divided into three groups, zinc+methyl mercury groups, methyl mercury exposure group and control group. zinc+methyl mercury groups were treated with different doses of ZnSO4 (2.86, 5.72, 8.58, 11.44 mg/kg) by intraperitoneal injection every day. On the 6th day, the rats in all groups except control group were exposed to methylmecury by oral administration. All the rats were sacrificed on the 7 th day, the activity of superoxide dismutase (SOD) and glutathione peroxidase (GHS-Px) in the liver, brain, kidney and blood were determined. Results With the zinc+methyl mercury groups, compare to the treatment of methylmecury, the activities of SOD significantly increased (P<0.05) and GSH-Px significantly decreased (P<0.05) in the tissues and blood, and shown a significant positive correlation. Conclusion The Zinc has significant inhibitive effect on methylmercury-induced oxidative damage in rats.

Key words: Zinc, Methylmercury, Glutathione peroxidase, Lipid peroxide, Superoxide dismutase, Metallthionein

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