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电磁辐射对子代大鼠学习记忆功能的影响
引用本文:张丽,王晋,郭国祯. 电磁辐射对子代大鼠学习记忆功能的影响[J]. 中华行为医学与脑科学杂志, 2008, 17(9)
作者姓名:张丽  王晋  郭国祯
作者单位:第四军医大学预防医学系放射医学教研室,西安,710092
基金项目:国家高技术研究发展计划(863计划) 
摘    要:
目的 研究电磁辐射对子代大鼠学习记忆能力的影响.方法 健康Wistar大鼠分为雌雄2组,每组又随机分为4组:对照组(CRT)、100s组(SI)、1000 s组(S10)和3000 s组(S30)组,分别接受0s、100s、1000 s和3000 s电磁辐射(场强100kV/m).辐照后2月将辐照时间相同的雌性和雄性动物合笼生育子代,子代雌雄2组根据其亲代的分组方式相应分为F-CTR、F-S1、F-S10、F-S30(F指子代),各4组,每组20只.通过行为学实验检测2月龄和6月龄子代大鼠的学习记忆能力.结果 (1)2月龄子代大鼠:穿梭实验中各辐照组与对照组比均差异无显著性.Y迷宫中雄性F-S10与雄性F-CTR比,学习总次数和错误次数都减少,学习总次数为(14.6±3.9)次vs(21.1±7.8)次,错误次数为(3.5±2.4)次vs(7.8±5.4)次(P<0.05).雌性F-S10与雌性F-CTR比,学习总次数和错误次数也都减少,分别为(13.4±3.0)次vs(25.8±8.8)次,(3.4±2.6)次vs(11.0±7.2)次(P<0.05).旷场实验中雌雄2组的F-S1与其对应的F-CTR,自发活动和探索能力都提高(P<0.05).(2)6月龄子代大鼠:Y迷宫中仅雄性组中的F-SI和F-S30与F-CTR比学习总次数增加,分别为(24.2±8.9)次vs(14.1±5.2)次,(30.7±12.4)次vs(14.1±5.2)次,(P<0.05).穿梭试验和旷场实验中各辐射组与对照组比均差异无显著性.结论 在该辐照条件下,100 kV/m的电磁辐射对2月子代大鼠记忆及对新事物的探索能力表现出刺激效应,成年后这种影响减弱.

关 键 词:电磁辐射  大鼠子代  学习记忆  行为学

Effects of electromagnetic radiation exposure on learning and memory function of rat pups
ZHANG Li,WANG Jin,GUO Guo-zhen. Effects of electromagnetic radiation exposure on learning and memory function of rat pups[J]. Chinese Journal of Behavioral Medicine and Brain Science, 2008, 17(9)
Authors:ZHANG Li  WANG Jin  GUO Guo-zhen
Abstract:
Objective To determine whether exposure to electromagnetic radiation results in behavioral effects of rat pups.Methods Wistar rats,either male or female,were divided randomly into four groups respectively:control(CTR),100 seconds(S1),1000 seconds(S10)and 3000 seconds(S30),then each of them were exposed to electromagnetic radiation of 100 kV/m field amplitude of corresponding time.For the day of exposure till 2 months later.they were mated with the rats in the same group and their offspring were divided into four groups(F-GTB,F-S1,F-S10,F-S30)correspondingly.Behavioral changes occur in 2-month old and 6-month old rat pups were found between radiation groups and control,and in Y-maze test,beth male and female pups in F-S10 significantly learned fewer times than their control(total study times:male 14.6±3.9 vs 21.1±7.8,female13.4±3.0 vs 25.8±8.8;false times:male 3.5±2.4 vs 7.8±5.4,female 3.4±2.6 vs 11.0±7.2).In open field test,both maze,male pups in F-S1 and F-S30 learned more times than control in total study time(24.2±8.9 vs 14.1±5.2.30.7±12.4 vs 14.1±5.2).In step throush test and open field test,no significant differences were found between radiation groups and control.Conclusion There was significant genetic effect exposed to electromagnetic radiation of 100 kV/m,mainly manifested in rat pups in growth period but without long-term effect.
Keywords:Electromagnetic radiation  Rat pups  Learning memory  Behavior
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