维生素C对铅中毒幼年大鼠海马的保护作用(英文)

被引:4
作者
胡志成 [1 ]
郝雯颖 [1 ]
陈洁 [1 ]
党玉涛 [1 ]
刘硕 [2 ]
车永哲 [1 ,3 ]
机构
[1] 南开大学医学院
[2] 南开大学环境科学与工程学院
[3] 南开大学生物活性材料教育部重点实验室
关键词
铅中毒; 中枢神经; 维生素C; 幼年大鼠;
D O I
暂无
中图分类号
R965 [实验药理学];
学科分类号
100602 ; 100706 ;
摘要
研究了铅对出生后7~21 d大鼠海马的损伤以及应用维生素C后的影响,探讨了维生素C的保护作用.将健康1周龄Wistar大鼠随机分为铅染毒组,维生素C给药组及生理盐水组.铅染毒组、维生素C给药组每组各18只,生理盐水组每组6只,共42只.铅染毒组生后6 d起每天7.5 mL·kg-1腹腔注射浓度0.05%的醋酸铅;维生素C给药组出生后6 d起每天按相同剂量醋酸铅注射的同时5 mL·kg-1(125 g·L-1)维生素C灌胃;生理盐水组生后6日起每天腹腔注射7.5 mL·kg-1灭菌生理盐水.各组于出生后第2、3、4周取材.测量血铅,分别进行Bcl-2、Bax免疫组织化学染色及Fluoro-Jade B荧光染色,并作平均光密度分析.通过对各个时间段每组血铅测定,可得维生素C给药组血铅含量为(2.395±0.974)μmol·L-1低于铅染毒组(3.164±1.481)μmol·L-1.Bcl-2铅染毒组海马区阳性细胞表达少于给药组(P<0.01),而Bax多于给药组(P<0.01),Flouro-JadeB铅染毒组海马区阳性细胞率明显多于给药组(P<0.01).此结果提示维生素C可降低染铅幼年大鼠的血铅浓度,并具有一定抗海马细胞损伤作用.
引用
收藏
页码:31 / 36
页数:6
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