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To investigate the effects of a 10 GHz electromagnetic field on male rat's reproductive system.
70 days old rats were sham exposed (n=6) or exposed (n=6). After the end of the experiment, blood samples were collected for determining chromosome aberration, testosterone level and performing micronucleus test. Additionally, spermatozoa were collected for determining the caspase-3 activity and morphology, as well as performing a comet assay. The experiments were repeated thrice.
|ばく露時間||continuous for 2 h/day for 45 days|
|チャンバの詳細||rats placed in Plexiglas cages, ventilated with 1 cm diameter holes; the cages were pasted with anechoic material (top was not covered)|
|ばく露装置の詳細||exposure cage was placed vertically below the antenna, so that all animals were exposed homogeneously with the same power level|
|Sham exposure||A sham exposure was conducted.|
The incidence of occurence of micronuclei increased statistically significant in the exposed group compared to the sham exposed group. No abnormalities in chromosomal number and structure was found in the exposed group in comparison to the sham exposed group. In the comet assay, a significant increase in tail length and intensity was shown in the exposed samples as compared to the sham exposed group. Sperm caspase-3 activity increased significantly in the exposure group, compared to the sham exposure group. The seminiferous tubules of the exposed group showed a significantly reduced diameter compared to them of the sham exposed groups. The serum testosterone level decreased significantly in exposed animals, as compared to sham exposed animals. The mean testicular weight of the exposed group was significantly reduced in comparison to the sham exposed group.
The authors conclude that the sperms of rats could be injured by 10 GHz electromagnetic fields.