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[Effect of handportable mobiletelephone microwave radiation on rat central neuron apoptosis]
Wei-guo Liu1, Xiao-feng Yang, Yong-jian Zhu
1The Second Hospital, College of Medical Science, Zhejiang University, Hangzhou 310009, China.
Objective:
To investigate the effect of handportable mobiletelephone microwave radiation on rat central nervous system by setting up rat model.
Methods:
80 healthy male SD rats (weighed about 200 g) were divided into 4 groups at random: control, radiation, decranium, decranium + radiation. TUNEL method was adopted used to detect the apoptosis of neurons after irradiation, then immunohistochemistry was used to detect Bcl-2, Bax expression in all brain tissue.
Results:
TUNEL positive rate, Bax and Bcl-2 positive cell numbers could be found in decranium + radiation group [(26.45 +/- 9.27)%, (23.5 +/- 3.58), (11.1 +/- 2.55) respectively]. There were significant differences among control [(9.59 +/- 2.55)%, 14.2 +/- 2.46, 7.0 +/- 1.14 respectively], decranium group [(9.52 +/- 1.93)%, 15.5 +/- 1.77, 7.4 +/- 1.76], radiation group [(10.04 +/- 3.62)%, 15.9 +/- 2.02, 7.2 +/- 1.07] (P < 0.01). But the difference was not found in the ratio of Bax to Bcl-2.
Conclusion:
Microwave radiation did not affect the intact rat, but did promote the occurrence of neuron apoptosis in cranial defect rat. Bax, Bcl-2 gene participated in regulation of apoptosis. The intact cranium may be an important factor to protect the neurons against handportable mobiletelephone microwave radiation to some extent.
