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

[ヒト赤血球に対するGSM900電磁界へのイン・ビトロばく露の影響] med./bio.

Effects of in vitro exposure to GSM900 electromagnetic field on human erythrocytes.

掲載誌: Environmentalist 2007; 27 (4): 423-428

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研究目的(著者による)

This in vitro study was performed to evaluate the effects of GSM 900 MHz electromagnetic field exposure on the membrane stability of human erythrocytes, their dependence on the suspension water content and on the time elapsed after irradiation.

詳細情報

Erythrocyte suspensions with two different concentrations (hematocrit 20% and 40 %) were investigated. They were exposed in two different positions, position 1 in the centre of the mobile phone irradiation and position 2 in a region of minimal irradiation. The experiments were carried out at room temperature and the temperature of the erythrocyte suspension was not controlled.

影響評価項目

ばく露

ばく露 パラメータ
ばく露1: 902 MHz
Modulation type: pulsed
ばく露時間: continuous for 20 min

ばく露1

主たる特性
周波数 902 MHz
タイプ
  • electromagnetic field
ばく露時間 continuous for 20 min
Modulation
Modulation type pulsed
Pulse width 577 µs
Additional information

standard GSM frame of 4.615 ms duration with discontinuous transmission mode (DTX) deactivated

ばく露装置
ばく露の発生源/構造
  • セルラ-電話
Distance between exposed object and exposure source 1 m
ばく露装置の詳細 cell suspension was either placed in the center of the major lobe of the antenna pattern (maximum irradiation) or between the major and the back lobe (minimum irradiation)
Additional information to measure the radiation pattern of the mobile phone it was placed on a rotating turntable and a dipole antenna placed level to it at a distance of 5 m; the turntable was rotated 360° and the response between antennas measured as a function of angle; measurements were performed in a free-space environment
パラメータ
測定量 種別 Method Mass 備考
電力 2 W peak - - -

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)

The amount of the released hemoglobin increased with the time elapsed after the exposure to electromagnetic fields both in the control and exposed erythrocytes. Exposed erythrocytes showed decreased hemolysis. The hemolysis decrease was more pronounced in position 1. Effects of electromagnetic fields appeared 10 minutes after exposure and differences retained 30 minutes in erythrocyte suspension with a hematocrit of 20%. The exposure of erythrocyte suspensions with hematocrit 40% caused statistically significant decrease of the hemolysis in all investigated time intervals.
These results indicate that the exposure to 900 MHz electromagnetic field probably stabilize the erythrocyte membrane reflected by decreased hemolysis.

研究の種別:

研究助成

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