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

[超低周波磁界(50Hz、0.5mT)ばく露後のショウジョウバエ運動活性の時間的パターン] med./bio.

Temporal pattern of Drosophila subobscura locomotor activity after exposure to extremely low frequency magnetic field (50 Hz, 0.5 mT).

掲載誌: Drosoph Inf Serv 2013; 96: 84-90
Journal not peer-reviewed

この研究は、50Hz、0.5mTの超低周波磁界への48時間のばく露が、異なる発達段階のショウジョウバエについて30分間記録した運動活性を変化させるかどうかを調べた。その結果、全ての実験群のハエにおいて、移動距離および機動性に有意差が認められた。どの発達段階ばく露されたかにかかわらず、ELF磁界はショウジョウバエの成虫の運動活性を低下させた。

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研究目的(著者による)

The effects of exposure of Drosophila subobscura to a 50 Hz magnetic field at different developmental stages on motor activity should be investigated.

詳細情報

Male and female Drosophila subobscura were exposed either as larvae (group 1, egg-first larval stage, n=45/sex) or as just eclosed adults (group 2, n=75/sex). In addition, a cage control group and a sham exposure group were used for each exposure group. Since no differences were observed between these, they were pooled for analysis in one control group (eggs: n=45/sex, adults: n=75/sex).

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 50 Hz
ばく露時間: continuous for 48 h

ばく露1

主たる特性
周波数 50 Hz
タイプ
  • magnetic field
ばく露時間 continuous for 48 h
ばく露装置
ばく露の発生源/構造
ばく露装置の詳細 exposure system consisted of 3 circular coils (37 cm diameter and set at 23 cm distance from each other) made of insulated copper wire (0.75 mm in diameter); no temperature fluctuation or vibrations were observed
Sham exposure A sham exposure was conducted.
パラメータ
測定量 種別 Method Mass 備考
磁束密度 0.5 mT - 測定値 - ± 0.01 mT

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:
調査の時期:
  • ばく露後

研究の主なアウトカム(著者による)

Both parameters of motor activity, distance travelled and mobility time, were significantly reduced in exposed male and female Drosophila subobscura larvae (group 1) and just eclosed adults (group 2) compared to the respective control groups.
The authors conclude that exposure of Drosophila subobscura to a 50 Hz-magnetic field at different developmental stages might affect motor activity.

研究の種別:

研究助成

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