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

[携帯電話放射にばく露したヒト毛根細胞における単鎖DNA切断] med./bio.

Single-strand DNA breaks in human hair root cells exposed to mobile phone radiation.

掲載誌: Int J Radiat Biol 2012; 88 (5): 420-424

本研究では、ヒト毛根細胞のゲノムDNAへのRF放射ばく露の短期的な影響を分析するため、健康被験者8人から、900MHzのGSM携帯電話を15または30分間使用後速やかに毛髪サンプルを採取し、コメット・アッセイを用いて毛根細胞のDNA単鎖切断を分析した。その結果、15または30分間の携帯電話使用により、電話機近くの毛根細胞におけるDNA単鎖切断が有意に増加、また、15分間より30分間使用の方が有意に多い損傷を生じさせたと報告している。

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研究目的(著者による)

To study the short-term effects of radiofrequency exposure on DNA single-strand breaks in human hair root cells.

詳細情報

Hair samples were collected from eight healthy subjects (six women, two men) immediately before and after using a 900 MHz GSM mobile phone for 15 and 30 minutes (experiments were separated by two weeks).
About 6 or 7 hair roots were plucked behind the right ear (side of mobile phone exposure) within a 60 mm x 60 mm area. Additionally, the same subjects served as their own controls (hair samples were taken 5 and 15 minutes apart without exposure in between).

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 15 min or 30 min
  • 電力: 2 W maximum
  • SAR: 0.974 W/kg (in the head - manufacturer's data)

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 15 min or 30 min
ばく露装置
ばく露の発生源/構造
  • セルラ-電話
  • GSM
Distance between exposed object and exposure source 1.5 cm
ばく露装置の詳細 handset fully charged before exposure; subjects held the mobile phone at the right ear and spoke into the phone's microphone
パラメータ
測定量 種別 Method Mass 備考
電力 2 W maximum - - -
SAR 0.974 W/kg - - partial body in the head - manufacturer's data

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:
  • ばく露前
  • ばく露後

研究の主なアウトカム(著者による)

The data showed that exposure to a mobile phone for 15 or 30 minutes significantly increased DNA single-strand breaks in hair root cells close to the cell phone. Additionally, significantly more DNA single-strand breaks were found after 30 minutes than after 15 minutes of mobile phone use.
The authors conclude that a short-term mobile phone exposure (15 and 30 minutes) caused a significant increase in DNA single-strand breaks in human hair root cells located around the ear which was used for the mobile phone exposure.

研究の種別:

研究助成

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