この研究は、携帯電話放射のインビトロばく露により、電気ウナギのアセチルコリンエステラーゼの水溶液の酵素活性が変化するか否かを調べた。ばく露には、実際に使用されている携帯電話を用い、同一の酵素水溶液を分割して、ばく露無しとばく露ありの場合を比較した。その結果、ばく露により、アセチルコリンエステラーゼの構造と生化学的特性への不可逆的影響が見られた、と報告している。
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To determine the influence of nonthermal exposure to dual band mobile phone irradiation on the structure and function of electric eel acetylcholinesterase (an important CNS enzyme).
| 周波数 | 915–1,822 MHz |
|---|---|
| タイプ |
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| ばく露時間 | continuous from 1 to 50 min |
| Modulation type | pulsed |
|---|
| ばく露の発生源／構造 |
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|---|---|
| Distance between exposed object and exposure source | 50 mm |
| ばく露装置の詳細 | Aliquots of enzyme solution of identical volumes were placed into glass test tubes. One tube was wrapped in a single thin aluminium foil to screen RF radiation. |
| Additional information | All experiments were carried out with the phone operating in receive mode being called from a remote phone. When the phone received a call, the emitted field intensity increased in the first 10 s to a maximum of 12 V/m before decreasing to a lower "standby asymptotic" value of 1 V/m. To change the exposition time from 1 to 50 min, the samples were gradually exposed to cycles of 60 sec each. |
The data provided evidence that in vitro simple exposure of an aqueous solution of electric eel acetylcholinesterase to cellular phone emission resulted in an irreversible monomerization of the protein accompanied by a significant change in the enzyme activity.
It is found that radiofrequency irradiation irreversibly affect the structural and biochemical characteristics of the enzyme. SR-SAXS (Synchroton radiation small-angle X-ray scattering) measurements provided data on the association of newly formed monomers into a soluble hydrogel. Jellification was confirmed by the variation of H1NMR relaxation times values. Further evidences of this process were revealed by ESEM (Environmental Scanning Electron Microscopy) observations.
Although these data cannot be used to conclude whether exposure to radiofrequency during the use of cellular phone can lead to any hazardous health effect, they may be a significant first step towards further verification of these effects on other ex vivo or in vivo biological systems.
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