研究のタイプ: 医学/生物学の研究 (experimental study)

[マウスの生殖および発達に対する無線周波電磁界(UMTS)の影響:多世代研究] med./bio.

Effects of radiofrequency electromagnetic fields (UMTS) on reproduction and development of mice: a multi-generation study.

掲載誌: Radiat Res 2009; 171 (1): 89-95

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研究目的(著者による)

To investigate whether chronic exposure to UMTS at various SAR-values affects the fertility and development of mice over four generations.

詳細情報

The first generation (F0) consisted of 128 male and 256 female mice. After 21 days or when a second litter was born, the pups were separated from the adults. After the pups of the second litters were weaned, the parental animals were killed. The males and females from both litters were placed seperately in cages until an age of 90 to 110 days when again males and females were placed in one cage. This procedure was repeated until shortly before the birth of the pups of the F3 parental animals.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 2 GHz
ばく露時間: continuous for 570 days with a 30 min break each night
  • 電力密度: 1.35 W/m² minimum
  • 電力密度: 6.8 W/m²
  • 電力密度: 22 W/m² maximum
  • SAR: 0.08 W/kg average over mass (whole body) (0.08 W/kg - 0.144 W/kg at 1.35 W/m² Power density)
  • SAR: 0.4 W/kg average over mass (whole body) (0.4 W/kg - 0.72 W/kg at 6.8 W/m² Power density)
  • SAR: 1.3 W/kg average over mass (whole body) (1.3 W/kg - 2.34 W/kg at 22 W/m² Power density)

ばく露1

主たる特性
周波数 2 GHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 570 days with a 30 min break each night
ばく露装置
ばく露の発生源/構造
ばく露装置の詳細 radial waveguide with an inner plate distance of 17 cm and a diameter of 2 cm
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
電力密度 1.35 W/m² minimum 測定値 - -
電力密度 6.8 W/m² - 測定値 - -
電力密度 22 W/m² maximum 測定値 - -
SAR 0.08 W/kg average over mass 計算値 whole body 0.08 W/kg - 0.144 W/kg at 1.35 W/m² Power density
SAR 0.4 W/kg average over mass 計算値 whole body 0.4 W/kg - 0.72 W/kg at 6.8 W/m² Power density
SAR 1.3 W/kg average over mass 計算値 whole body 1.3 W/kg - 2.34 W/kg at 22 W/m² Power density

Reference articles

ばく露を受けた生物:

方法 影響評価項目/測定パラメータ/方法

研究対象とした生物試料:
研究対象とした臓器系:
調査の時期:
  • ばく露中
  • ばく露後

研究の主なアウトカム(著者による)

The results did not show harmful effects of exposure on the fertility and the development of the animals. The number and the development of pups were not affected by exposure. There are some indications for effects of exposure on food consumption. The effects were up to -25% compared to the sham exposure group.
The results do not indicate harmful effects of longterm exposure of mice to UMTS over several generations. The explanation for the lowered food consumption could be metabolic effects: absorbed radiofrequency electromagnetic field energy might be used by the animals in a way that reduces the metabolism of food for heating.

研究の種別:

研究助成

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