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

[成長期ラットの精巣機能および構造に対する電磁界(1.8/0.9 GHz)の影響] med./bio.

Effects of exposure to electromagnetic field (1.8/0.9 GHz) on testicular function and structure in growing rats.

掲載誌: Res Vet Sci 2012; 93 (2): 1001-1005

The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary? Then please contact us →

研究目的(著者による)

To study the possible effects of 900 MHz and 1800 MHz electromagnetic field exposures on testicular function in growing male rats (two days old).

詳細情報

33 rats were divided into three groups (two exposure groups and a sham exposure group; each group n=11).

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 900 MHz
ばく露時間: continuous for 2 h/day for 90 days
  • SAR: 3 mW/kg maximum (whole body) (aged 10 days)
  • SAR: 1.2 mW/kg minimum (whole body) (aged 70 days)
ばく露2: 1,800 MHz
ばく露時間: continuous for 2 h/day for 90 days
  • SAR: 0.053 mW/kg maximum (whole body) (aged 10 days)
  • SAR: 0.011 mW/kg minimum (whole body) (aged 70 days)

General information

Rats were divided into three groups with 11 animals each.

ばく露1

主たる特性
周波数 900 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 2 h/day for 90 days
ばく露装置
ばく露の発生源/構造
  • モノポール
Distance between exposed object and exposure source 2 cm
ばく露装置の詳細 rats were kept seperately in their experiment boxes; monopole antennas were placed at a distance of 2 cm next to rat's head
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
SAR 3 mW/kg maximum 測定値および計算値 whole body aged 10 days
SAR 1.2 mW/kg minimum 測定値および計算値 whole body aged 70 days

ばく露2

主たる特性
周波数 1,800 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 2 h/day for 90 days
ばく露装置
ばく露の発生源/構造
  • E1と同じ装置
パラメータ
測定量 種別 Method Mass 備考
SAR 0.053 mW/kg maximum 測定値および計算値 whole body aged 10 days
SAR 0.011 mW/kg minimum 測定値および計算値 whole body aged 70 days

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:
  • ばく露後

研究の主なアウトカム(著者による)

The mean plasma testosterone level and the percentage of epididymal sperm motility were significantly higher in the two exposure groups than in the sham exposed rats. The morphologically normal spermatozoa rates were statistically significant higher and the tail abnormality and total abnormalities percentage were statistically significant lower in the 900 MHz group compared with the 1800 MHz exposure and the sham exposed group. There was no statistically significant difference in the sperm concentration, head, and mid-piece abnormalities among the groups. Histopathologic parameters in the 1800 MHz group were significantly higher compared with the 900 MHz exposure and sham exposed group.
In conclusion, the data indicate that exposure to electromagnetic fields caused an increase in testosterone level, epididymal sperm motility, and normal sperm morphology of rats.

研究の種別:

研究助成

関連論文