近日,耶鲁医学院的研究者通过研究表明,孕妇长期置身于手机的辐射之中会影响其后代的大脑发育,有可能会导致婴儿的大脑过度活跃。相关研究结果刊登在了国际杂志Nature旗下杂志Scientific Reports上。
怀孕期间,长期暴露于手机辐射之中会影响孩子的大脑发育,会引起孩子行为异常(Credit: © Poulsons Photography / Fotolia)
研究者Hugh S Taylor博士表示,我们的研究首次提供了证据,婴儿长期暴露于手机辐射下会影响其成年后的行为,研究者将手机放于饲养怀孕的小鼠笼子之上,确保手机的辐射作用一直持续,对照组为将怀孕小鼠置于无手机长期辐射的环境中,当这些受辐射的胎儿长至成年小鼠后,研究者测定了其大脑的电动生物活性,并且进行了一系列的心理和行为能力测定,研究者发现暴露于手机辐射的小鼠在成年后更趋于亢奋以及记忆力降低,Taylor将这些行为上的改变归因于在怀孕时期胎儿受到辐射使得其大脑前额叶皮质区的神经发育受到影响所致,注意力缺陷伴多动障碍(ADHD)就是因为大脑前额叶皮质区发育障碍所引起的一种疾病,主要特点也是注意力不集中以及过渡亢奋。
研究者Taylor表示,我们目前研究发现这种类似ADHD的行为问题是因为子宫内的胎儿受到手机辐射的影响,人类中,小孩发生行为障碍的比例的升高有很大一部分原因是因为长期暴露于手机辐射之中,研究者表示他们后期的研究将会在人类中进行,以此更好的理解和验证他们的研究发现,并且给怀孕妇女建立安全的无辐射环境。研究者Aldad说,“实验中的手机是模拟人类处于辐射的环境之中的,后期研究将会使用标准的电磁场辐射生成器来使得实验环境更加精准。”(生物谷:T.Shen编译)
doi:10.1038/srep00312
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Fetal Radiofrequency Radiation Exposure From 800-1900 Mhz-Rated Cellular Telephones Affects Neurodevelopment and Behavior in Mice
Tamir S. Aldad,1, 2 Geliang Gan,2 Xiao-Bing Gao2, 3 & Hugh S. Taylor1, 2, 4
Neurobehavioral disorders are increasingly prevalent in children, however their etiology is not well understood. An association between prenatal cellular telephone use and hyperactivity in children has been postulated, yet the direct effects of radiofrequency radiation exposure on neurodevelopment remain unknown. Here we used a mouse model to demonstrate that in-utero radiofrequency exposure from cellular telephones does affect adult behavior. Mice exposed in-utero were hyperactive and had impaired memory as determined using the object recognition, light/dark box and step-down assays. Whole cell patch clamp recordings of miniature excitatory postsynaptic currents (mEPSCs) revealed that these behavioral changes were due to altered neuronal developmental programming. Exposed mice had dose-responsive impaired glutamatergic synaptic transmission onto layer V pyramidal neurons of the prefrontal cortex. We present the first experimental evidence of neuropathology due to in-utero cellular telephone radiation. Further experiments are needed in humans or non-human primates to determine the risk of exposure during pregnancy.