Assessments of DNA damage and radiation exposure dose in cattle living in the contaminated area caused by the Fukushima nuclear accident
Assessments of DNA damage and radiation exposure dose in cattle living in the contaminated area caused by the Fukushima nuclear accident
复制标题
福岛核事故污染区牛DNA损伤及辐射剂量评估
DOI：
10.1007/s00128-020-02968-w
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发表时间：
2020
影响因子：
2.7
通讯作者：
Okada K.
中科院分区：
文献类型：
--
作者：
Sato I.;Sasaki J.;Satoh H.;Natsuhori M.;Murata T.;Okada K.
自2011年福岛核事故以来，生活在污染区的动物出现了各种异常。在本研究中，我们研究了DNA损伤的牛生活在“难以返回区”的8-羟基-2 ′-脱氧鸟苷，彗星，和微核试验，使用他们的外周血。采样时的辐射暴露剂量率约为0.25或0.38 mGy/天，累积剂量估计约为1000 mGy。三种方法均未检测到DNA损伤的显著增加。由于DNA损伤是辐射的一种随机效应，它可能发生在生活在受污染地区的动物身上。然而，目前的结果表明，辐射引起的DNA损伤的牛没有增加到我们使用的检测，由于在这一领域的低剂量率的水平。
Since the Fukushima nuclear accident in 2011, various abnormalities have been reported in animals living in the contaminated area. In the present study, we examined DNA damage in cattle living in the "difficult-to-return zone" by 8-hydroxy-2′-deoxyguanosine, comet, and micronucleus assays using their peripheral blood. The radiation exposure dose rate at the sampling time was approximately 0.25 or 0.38 mGy/day and the cumulative dose was estimated at approximately 1000 mGy. Significant increase in DNA damage was not detected by any of the three methods. As DNA damage is a stochastic effect of radiation, it might be occurring in animals living in the contaminated area. However, the present results suggest that radiation-induced DNA damage in the cattle did not increase to the level detectable by the assays we used due to the low dose rate in this area.