氯化甲基汞对发育阶段大鼠脑核因子kappaBDNA结合活性的影响

被引:4
作者
董丽波
李志超
毕晓颖
凌玲
郭丽
机构
[1] 白求恩医科大学毒理教研室!长春,白求恩医科大学毒理教研室!长春,白求恩医科大学毒理教研室!长春,白求恩医科大学毒理教研室!长春,白求恩医科大学毒理教研室!长春
关键词
氯化甲基汞; 核因子-kappaB; DNA; 结合活性; 发育脑;
D O I
暂无
中图分类号
R994.3 [工业毒理学];
学科分类号
100405 ;
摘要
为探讨氯化甲基汞 (MMC)对发育大鼠脑组织核因子 kappa B(NF- k B) DNA结合活性的影响 ,采用凝胶移位法可见发育大鼠的大、小脑核蛋白提取物与 k B探针结合 ,对照和实验组均有 2条结合带。出生后 3天大鼠的大、小脑核蛋白提取物中 NF- k B DNA结合活性高于出生后 7天者。提示在发育大鼠脑中 NF- k B对发育起一定作用。宫内接触 MMC后出生 3和 7天的大脑核蛋白提取物中 NF- k B 和 NF- k B DNA结合活性低于对照组 ,而小脑中的 NF- k B 和 NF- k B DNA结合活性则高于对照组。在体外结合反应体系中 ,随着 MMC剂量的增高可增强大、小脑核蛋白提取物中 NF- k B DNA结合活性。提示接触MMC后大、小脑神经细胞反应能力不同 ,小脑中 NF- k B被激活。
引用
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页码:7 / 9
页数:3
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