Influence of ehf radiation on frequency of micronuclei and nuclear anomalies in amphibian larva erythrocytes

V. Kryukov, S. Zhuchkov, T. N. Lazareva, O. Kireeva, N. N. Popovicheva
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Abstract

The level of technogenic non-ionizing electromagnetic radiations of various frequencies constantly grows in the biosphere. Therefore, studies of these radiations influence on biological organisms are very actual. The purpose of the work was to study the consequences of prolonged exposure to EHF radiation on the stability of the genome of anurans. Larvae of the green toad (Bufo viridis) were subjected to EMR at four different EHF frequencies (34.52, 34.67, 34.79, and 35.04 GHz with an energy flux density of 4.88, 5.33, 4.94, and 3.76 mW/cm2, respectively) for 120 hours. After irradiation the frequencies of micronuclei (MN) and nuclear anomalies (NA) in peripheral blood erythrocytes of tadpoles were studied. EHF radiation with a frequency of 34.52 GHz induced a small and statistically insignificant increase in the frequency of MN and NA. Exposure to EHF radiation at frequencies of 34.67, 34.79, and 35.04 GHz caused a statistically significant increase in the frequency of MN and NA in tadpole erythrocytes. A statistically significant increase of the frequency of MN and NA in anuran larvae erythrocytes after exposure to EHF radiation proves a certain danger of an increasing level of EMR in the biosphere, as well as the need for further studies of the effect of non-ionizing radiation on the genomes of lower vertebrates.
ehf辐射对两栖动物幼虫红细胞微核频率及核异常的影响
各种频率的技术性非电离电磁辐射水平在生物圈中不断增长。因此,研究这些辐射对生物有机体的影响是非常现实的。这项工作的目的是研究长期暴露于EHF辐射对无尾动物基因组稳定性的影响。采用4种EHF频率(34.52、34.67、34.79和35.04 GHz)对绿蟾蜍幼虫进行EMR处理,能量通量密度分别为4.88、5.33、4.94和3.76 mW/cm2,持续120 h。研究了辐照后蝌蚪外周血红细胞微核(MN)和核异常(NA)的频率。频率为34.52 GHz的EHF辐射对MN和NA频率的影响较小,且统计上不显著。频率为34.67、34.79和35.04 GHz的EHF辐射使蝌蚪红细胞中MN和NA的频率有统计学意义的增加。暴露于EHF辐射后,无尾虫幼虫红细胞中MN和NA的频率有统计学意义的增加,这证明生物圈中EMR水平的增加具有一定的危险性,也需要进一步研究非电离辐射对低等脊椎动物基因组的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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