この研究は、電磁界の事前ばく露による適応応答について、BALB/cマウスの大腸菌（E.coli.）感受性を指標にして調べた。事前ばく露として、ばく露群にはGSM携帯電話からの電磁放射を1日2、4、8、12時間、3日間与えた。ばく露群、擬似ばく露群は各群5-10匹であった。実験4日目に、E.coli.を腹腔内投与し、その後の生存を観察した。その結果、E.coli.投与後15日目の生存率は、事前ばく露12時間／日群で擬似ばく露群より有意に高かった、と報告している。
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The effects of pre-exposure of mice to a radio frequency electromagnetic field on the survival rate after a bacterial infection should be investigated.
110 mice were divided into the following groups: 1) 2 h/day exposure to electromagnetic field and injection of Escherichia coli bacteria (n=10), 2) 2 h/day exposure and sham injection (saline solution) (n=5), 3) sham exposure and bacteria injection (n=5), 4) 4 h/day exposure and bacteria injection (n=10), 5) exposure and sham injection (n=5), 6) sham exposure and bacteria injection (n=5), 7) 8h/day exposure and bacteria injection (n=10), 8) 8 h/day exposure and sham injection (n=5), 9) sham exposure and bacteria injection (n=5), 10) 12 h/day exposure and bacteria injection (n=10), 11) 12 h/day exposure and sham injection (n=5), 12) sham exposure and bacteria injection (n=5), 13) replication of group 10 (n=15), 14) replication of group 12 (n=15).
background radiation was 0.1 µSv/h
| ばく露の発生源／構造 |
|
|---|---|
| Distance between exposed object and exposure source | 5 cm |
| ばく露装置の詳細 | cell phone was used in talk mode during exposure; mice were immobilized by placing their bodies in plastic restrainers; restrainers were placed around the antenna in a circular position |
| Sham exposure | A sham exposure was conducted. |
| 測定量 | 値 | 種別 | Method | Mass | 備考 |
|---|---|---|---|---|---|
| SAR | 1.4 W/kg | - | - | - | - |
The results of the groups with sham injection of bacteria (2, 5, 8 and 11) were not presented or discussed.
Group 4 (4 h/day) showed a significantly lower survival rate in comparison to its corresponding sham exposure group (6) according to table 2 in the article (see full-text). (Remark EMF-Portal: However, this result is not mentioned or discussed any further by the authors.)
Group 13 (12 hours of exposure/day) showed a significantly higher survival rate compared to its corresponding sham exposure group (14), as did the pooled results of groups 13 and 10 in comparison to the pooled results of groups 14 and 12.
The authors conclude that pre-exposure of mice to a radio frequency electromagnetic field might increase the survival rate after a bacterial infection. This could be the result of an adaptive response and activation of the immune system, what might be of potential therapeutic use.
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