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

[脂肪由来幹細胞に対するスマートフォンのWi-Fi信号の影響] med./bio.

Influence of smartphone Wi-Fi signals on adipose-derived stem cells.

掲載誌: J Craniofac Surg 2014; 25 (5): 1902-1907

この研究は、1日10時間4.8 Mbpsの通信速度でファイルをアップロードさせ続けたスマートフォンのWi-Fi信号下で5日間培養した脂肪由来幹細胞(ASCs)を2つの対照群(37および39℃で5日間培養)と比較した。その結果、37℃群に比べ、Wi-Fi群および39℃群で細胞増殖速度が高まった;アポトーシスアッセイフローサイトメトリ分析、増殖因子濃度には3つの群で顕著な差異がなかった、と報告している。

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研究目的(著者による)

The effects of exposure of human adipose derived stem cells to a 2.4 GHz electromagnetic field (WiFi) on cell proliferation, apoptosis and differentiation should be investigated.

詳細情報

Cells were divided into three groups: 1) exposure to the 2.4 GHz electromagnetic field, 2) control group incubated at 37°C, 3) control group incubated at 39°C. Two control groups were used because in a preliminary test a temperature rise of about 2°C was measured in the exposed cell culture. Thus, the 39°C control group should account for possible thermal effects.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 2.4 GHz
ばく露時間: continuous for 10 hours/day for 5 days

ばく露1

主たる特性
周波数 2.4 GHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 10 hours/day for 5 days
Additional information WiFi
ばく露装置
ばく露の発生源/構造
  • セルラ-電話
  • SHW-M110S, Samsung
Distance between exposed object and exposure source 2 cm
チャンバの詳細 culture plates in a CO2 incubator
ばく露装置の詳細 cells were incubated under a smartphone connected to a WiFi local area network (IEEE 802.11 g); the smartphone worked actively, uploading files at 600-KB/s or 4.8 Mbps (remark EMF-Portal: contradictory specifications) speed to a laptop connected to a wireless router; temperature in incubator was maintained at 37°C and CO2 5%
Additional information (remark EMF-Portal: it was not stated whether other potential EMF sources of the smartphone (e.g. GSM, Bluetooth) or MF of the incubator were deactivated during exposure)
パラメータ
測定量 種別 Method Mass 備考
SAR 240 mW/kg - 計算値 - -
電力密度 26 µW/cm² mean - - -

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)

Cell proliferation was significantly increased in the exposure group and in the 39°C control group compared to the 37°C control group.
All other parameters did not show any significant differences between the groups.
The authors conclude that exposure of human adipose derived stem cells to a 2.4 GHz electromagnetic field (WiFi) has no effects on cell proliferation, apoptosis and differentiation apart from thermal effects.

研究の種別:

研究助成

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