镉接触对妊娠期及哺乳期大鼠及仔代生长发育的影响

被引:7
作者
申立军
范奇元
丁训诚
金泰垚
机构
[1] 复旦大学公共卫生学院毒理学教研室
[2] 中国生育调节药物毒理检测中心
[3] 复旦大学公共卫生学院毒理学教研室 上海
[4] 上海
关键词
镉; 生长发育; 性别分化; 青春期启动; 内分泌干扰作用;
D O I
10.16421/j.cnki.1002-3127.2001.04.002
中图分类号
R114 [卫生毒理]; R394.6 [药物遗传学与遗传毒理学];
学科分类号
100405 ; 0710 ; 071007 ;
摘要
目的 观察妊娠期及哺乳期镉接触对大鼠性别分化、生长发育和青春期启动的影响 ,以及其可能的内分泌干扰机制。方法 SD雌性大鼠从妊娠第 1天开始至仔鼠断奶 ,自由饮用含 0、5、2 0和 40mg L氯化镉的水。结果 各剂量组仔鼠的生长发育、青春期启动均受到明显影响 :出生后 (PND) 2 1d体重明显低于对照组 ;阴道开放、包皮分离比对照组延迟 2~ 3d。但是 ,各剂量组对妊娠时间、着床数、每胎活产数、性别比例、肛殖距离没有明显的影响。结论 在该实验条件下 ,并未显示镉具有雌激素样活性。镉可能通过多种机制 ,如甾类生成、甲状腺、垂体性腺轴等 ,干扰内分泌系统 ,从而影响大鼠的生长发育、青春期启动。
引用
收藏
页码:197 / 200
页数:4
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