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

[移動体通信周波数(954MHz)であるマイクロ波の細胞遺伝学的影響] med./bio.

Cytogenetic Effects of Microwaves from Mobile Communication Frequencies (954 MHz).

掲載誌: Electro Magnetobiol 1995; 14 (2): 91-98

この研究は、GSM移動通信用グローバルシステム)基地局の954MHz放射アンテナからの電磁界ばく露を受けた全血試料をばく露後に培養し、染色体異常の分析を行った。また、この周波数および他の周波数のマイクロ波の職業的ばく露がある保守作業員から得られた限定的な数量の血液試料も調べた。その結果、血液試料がアンテナに非常に接近して置かれていた場合、インビトロでの細胞遺伝学損傷がいくつか見られたが、データを総合して考察すると、GSM基地局から放射されるマイクロ波は一般人口集団に遺伝的異常誘発することはできないと思われる、と報告している。

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研究目的(acc. to editor)

The first part of this publication is an experimental in vitro study about the possible effects on human blood lymphocytes caused by 954 MHz irradiation. The second part is an observational in vivo study. In this pilot experiment blood samples obtained from maintenance workers, occupationallly exposed to microwaves of several frequencies, were investigated.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 954 MHz
Modulation type: pulsed
ばく露時間: continuous for 2 h
in vitro study
ばく露2: 450–900 MHz
Modulation type: pulsed
ばく露時間: repeated daily exposure for at least 1 h/day for at least 1 year
in vivo study
-

ばく露1

主たる特性
周波数 954 MHz
タイプ
  • electromagnetic field
特性
  • near field
ばく露時間 continuous for 2 h
Additional information in vitro study
Modulation
Modulation type pulsed
Additional information

GSM

ばく露装置
ばく露の発生源/構造
  • 基地トランシーバ局
Distance between exposed object and exposure source 5 cm
ばく露装置の詳細 Heparinized blood samples (10 ml) were aliquoted over three test tubes. Aliquot A was placed 5 cm from the emitting antenna in a cooled box at 17 ± 1 °C. Aliquot B was placed in a metallic box but the conditions were same as for A. Aliquot C served as control and was kept in another room away from the antenna.
Additional information Three aliquots were made from each 10-ml blood sample: exposed, sham-exposed, and outside control.
パラメータ
測定量 種別 Method Mass 備考
電界強度 49 V/m unspecified 測定値 - 46-51 V/m
電力密度 15 W/m² unspecified - - -
SAR 1.5 W/kg unspecified 計算値 - -

ばく露2

主たる特性
周波数 450–900 MHz
タイプ
  • electromagnetic field
ばく露時間 repeated daily exposure for at least 1 h/day for at least 1 year
Additional information in vivo study
Additional information and other frequencies
Modulation
Modulation type pulsed
ばく露装置
ばく露の発生源/構造
  • 基地トランシーバ局
  • maintenance of transmission antennas
ばく露装置の詳細 Investigation on a limited sample of six workers occupationally exposed.
Additional information A control sample of six healthy men was selected for comparable age and life-style.
パラメータ

No parameters are specified for this exposure.

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)

In conclusion, the present investigation failed to demonstrate any important cytogenetic damage in in vivo exposed subjects. Some cytogenetic effects were observed in in vitro exposed blood samples but only very close to the antenna.

研究の種別:

研究助成

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