この研究は、ラットを用いて、視覚誘発電位(VEPs)および酸化/抗酸化状態に対する2100 MHz電磁界(EMF)の影響のばく露時間依存性を調べた。ラットは、2つのばく露群(E1群およびE10群)およびそれぞれの擬似ばく露対照群(S1群およびS10群)に分け、1日2時間のEMFばく露をE1群は1週間、E10群は10週間与えた。ばく露終了後に、麻酔下でVEPsを記録し、脳の組織検査を行った。その結果、脳組織のチオバルビツール酸反応物質(TBARS)および4-ヒドロキシ-2-ノネナール(4-HNE)のレベルが、それぞれの対照群に比べ、E1群では有意に低下、E10群では上昇した;E1群ではS1群に比べ、カタラーゼ(CAT)、グルタチオンペロキシダーゼ(GSH-Px)の活性および一酸化窒素(NO)およびグルタチオン(GSH)のレベルが有意に上昇し、スーパーオキシドジスムターゼ(SOD)活性の低下が観察された;E10群ではS10群に比べ、CAT、GSH-Pxの活性およびNOレベルの低下が見られた;VEPの全ての成分の潜時がE1群ではS1群に比べ短縮されたが、E10群ではS10群に比べ、P1成分以外の全ての成分の潜時が延長された、などばく露期間により異なる影響が観察されたと報告している。
The detailed summary of this article is not available in your language or incomplete. Would you like to see a complete translation of the summary? Then please contact us →
The effects of exposure of rats to a 2100 MHz electromagnetic field on visual evoked potentials and oxidative stress in the brain should be investigated.
Male rats were divided into 4 groups (n=14 each): 1) exposure to the electromagnetic field for 1 week, 2) sham exposure for 1 week, 3) exposure to the electromagnetic field for 10 weeks, 4) sham exposure for 10 weeks. 24 hours after the end of exposure, visual evoked potentials were recorded and subsequently, rats were killed and the brain was investigated.
ばく露 | パラメータ |
---|---|
ばく露1:
2,100 MHz
Modulation type:
pulsed
|
|
ばく露2:
2,100 MHz
Modulation type:
pulsed
|
周波数 | 2,100 MHz |
---|---|
タイプ |
|
Modulation type | pulsed |
---|---|
Repetition frequency | 217 Hz |
ばく露の発生源/構造 |
|
---|---|
Distance between exposed object and exposure source | 10 cm |
Sham exposure | A sham exposure was conducted. |
周波数 | 2,100 MHz |
---|---|
タイプ |
|
Modulation type | pulsed |
---|---|
Repetition frequency | 217 Hz |
ばく露の発生源/構造 |
|
---|---|
Sham exposure | A sham exposure was conducted. |
The latencies of all visual evoked potentials were significantly shortened in group 1 compared to the sham exposure group, while they were significantly increased (except P1) in group 3 compared to the sham exposure group.
Lipid peroxidation was significantly decreased after one week of exposure to the electromagnetic field (group 1) compared to the respective sham exposure group (group 2), while it was significantly increased after 10 weeks of exposure (group 3) compared to the sham exposure group (group 4). The enzyme activities of catalase and glutathione peroxidase as well as the levels of nitric oxide and glutathione were significantly increased in group 1, while the superoxide dismutase enzyme activity was significantly decreased compared to the sham exposure group. In group 3, catalase and glutathione peroxidase enzyme activities and the level of nitric oxide were significantly decreased compared to the sham exposure group.
There was a significant positive correlation between all visual evoked potentials latencies and lipid peroxidation in the brain.
The authors conclude that exposure of rats to 2100 MHz electromagnetic field might alternate visual evoked potentials and induce oxidative stress in the brain depending on the exposure duration. Thus, short term exposure (1 week) might have a protective effect, while long term exposure (10 weeks) might have an adverse effect on the oxidative status in the brain.
このウェブサイトはクッキー(Cookies)を使って、最善のブラウジングエクスペリエンスを提供しています。あなたがこのウェブサイトを継続して使用することで、私たちがクッキーを使用することを許可することになります。