Single- and double-strand DNA breaks in rat brain cells after acute exposure to radiofrequency electromagnetic radiation

被引:310
|
作者
Lai, H
Singh, NP
机构
[1] Bioelectromagnetics Res. Laboratory, Center for Bioengineering, University of Washington, Seattle
关键词
D O I
10.1080/095530096145814
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
We investigated the effects of acute (2-h) exposure to pulsed (2-mu s pulse width, 500 pulses s(-1)) and continuous-wave 2450-MHz radiofrequency electromagnetic radiation on DNA strand breaks in brain cells of rat. The spatial averaged power density of the radiation was 2 mW/cm(2), which produced a whole-body average-specific absorption rate of 1.2 W/kg. Single- and double-strand DNA breaks in individual brain cells were measured at 4 h post-exposure using a microgel electrophoresis assay. An increase in both types of DNA strand breaks was observed after exposure to either the pulsed or continuous-wave radiation. No significant difference was observed between the effects of the two forms of radiation. We speculate that these effects could result from a direct effect of radiofrequency electromagnetic energy on DNA molecules and/or impairment of DNA-damage repair mechanisms in brain cells. Our data further support the results of earlier in vitro and in vivo studies showing effects of radiofrequency electromagnetic radiation on DNA.
引用
收藏
页码:513 / 521
页数:9
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