电热毯对孕鼠子代脑儿茶酚胺和行为的影响

Effects of Pregnant Exposure to Electromagnetic Field Emitted by Electric Blankets on Brain Catecholamine and Behavlor in Offspring Mice

ＮＩＨ孕鼠整个孕期暴露于１～１．２ｋＶ／ｍ和０．２～０．４μＴ电磁场强度的电热毯，每天５ｈ。使用定量组织化学和行为毒理学方法检测新生子代下丘脑儿茶酚胺（ＣＡ）含量及各种行为活动。结果显示，暴露组子代的ＣＡ含量不仅在出生后７天，而且在出生后４０天时也比对照组明显下降（Ｐ＜０．０１及Ｐ＜０．０５）。

IH pregnant mice were exposed to electromagnetic field emitted by electric blankets with 1～1.2kV/m and 0.2～0. 4μT for five hours daily during their whole gestational period, Catecholamine(CA)content in the hypothalamus of their newborn offsprings was quantitatively measured with histo-chemical methods,and their varied behavioral activities were determined with behavioral toxicological methods.Results showed catecholamine content in exposed offsprings decreased significantly not only seven days but also 40 days after delivery as compared with the controls (P<0.01 and P<0. 05,re-spectively).