Kumar Gaurav, McIntosh Robert L, Anderson Vitas, McKenzie Ray J, Wood Andrew W
a Brain and Psychological Sciences Research Centre, Swinburne University of Technology , Hawthorn, Victoria , Australia.
Int J Radiat Biol. 2015 Aug;91(8):664-72. doi: 10.3109/09553002.2015.1047988. Epub 2015 Jun 3.
In our earlier study we reported that 900 MHz continuous wave (CW) radiofrequency radiation (RFR) exposure (2 W/kg specific absorption rate [SAR]) had no significant effect on the hematopoietic system of rats. In this paper we extend the scope of the previous study by testing for possible effects at: (i) different SAR levels; (ii) both 900 and 1800 MHz, and; (iii) both CW and pulse modulated (PM) RFR.
Excised long bones from rats were placed in medium and RFR exposed in (i) a Transverse Electromagnetic (TEM) cell or (ii) a waveguide. Finite-difference time-domain (FDTD) numerical analyses were used to estimate forward power needed to produce nominal SAR levels of 2/10 and 2.5/12.4 W/kg in the bone marrow. After exposure, the lymphoblasts were extracted and assayed for proliferation rate, and genotoxicity.
Our data did not indicate any significant change in these end points for any combination of CW/PM exposure at 900/1800 MHz at SAR levels of nominally 2/10 W/kg or 2.5/12.4 W/kg.
No significant changes were observed in the hematopoietic system of rats after the exposure of CW/PM wave 900 MHz/1800 MHz RF radiations at different SAR values.
在我们早期的研究中，我们报告称900兆赫连续波（CW）射频辐射（RFR）暴露（比吸收率[SAR]为2瓦/千克）对大鼠的造血系统没有显著影响。在本文中，我们通过测试以下方面的可能影响来扩展先前研究的范围：（i）不同的SAR水平；（ii）900兆赫和1800兆赫两个频率，以及；（iii）连续波（CW）和脉冲调制（PM）RFR。
将大鼠的离体长骨置于培养基中，并在（i）横向电磁（TEM）室或（ii）波导中进行RFR暴露。使用时域有限差分（FDTD）数值分析来估计在骨髓中产生标称SAR水平为2/10和2.5/12.4瓦/千克所需的前向功率。暴露后，提取淋巴母细胞并检测其增殖率和遗传毒性。
我们的数据表明，在标称SAR水平为2/10瓦/千克或2.5/12.4瓦/千克的情况下，900/1800兆赫的CW/PM暴露的任何组合在这些终点上均未显示出任何显著变化。
在不同SAR值下暴露于900兆赫/1800兆赫的CW/PM波射频辐射后，未观察到大鼠造血系统有显著变化。
