この研究は、インドのハイデラバードにある132 kV高圧変電所で職業的に超低周波磁界にばく露した調査対象者(n=142)および彼らと年齢社会経済的状態をマッチさせた対照者(n=151)におけるメラトニンレベルおよび酸化ストレスのバイオマーカを調べた。調査対象者は、職種によって、低(管理)、中(保守)、高(活線作業)ばく露群に分類した。その結果、高ばく露群において、血漿中のメラトニンレベルが有意に低下していた;全てのばく露群で、血漿のマロンジアルデヒドおよび一酸化窒素のレベルが有意に上昇していた、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 →
A study was conducted in India to investigate the melatonin levels and oxidative stress parameters in electric utility workers with exposure to extremely low frequency magnetic fields.
Further results on this study population are published in Tiwari et al (2015).
A blood sample for determining melatonin level and other blood parameters was collected in the morning between 9 AM to 10 AM from each study participant.
グループ | 説明 |
---|---|
参照集団 1 | occupational exposure to extremely low frequency magnetic fields: no |
集団 2 | occupational exposure to extremely low frequency magnetic fields: yes |
集団 3 | duration of occupational exposure to extremely low frequency magnetic fields: 1 - 4 years |
集団 4 | duration of occupational exposure to extremely low frequency magnetic fields: 5 - 12 years |
集団 5 | duration of occupational exposure to extremely low frequency magnetic fields: 13 - 28 years |
集団 6 | daily duration of occupational exposure to extremely low frequency magnetic fields: 1 - 3 hours/day |
集団 7 | daily duration of occupational exposure to extremely low frequency magnetic fields: 3 - 6 hours/day |
集団 8 | daily duration of occupational exposure to extremely low frequency magnetic fields: 6 - 9 hours/day |
集団 9 | exposure based on job titles: low (e.g. administrative workers) |
集団 10 | exposure based on job titles: medium (e.g. maintenance workers) |
集団 11 | exposure based on job titles: high (e.g. live-line workers) |
タイプ | 値 |
---|---|
合計 | 142 |
The measured mean occupational magnetic field strength in the 132 kV substation at Hyderabad, India was 3.5 µT (SD ± 2.01), while environmental non-occupational exposure was 0.0015 µT (SD ± 0.001). The electric utility workers were exposed for a mean duration of 9.27 (±7.23) years at an average of 9 h per day.
The plasma melatonin level was significantly decreased in high exposed workers (group 11) when compared to the low and medium exposed groups (groups 9 and 10). The lipid peroxidation and nitric oxide levels were significantly increased in all exposed subjects (group 2) in comparison to the control group (group 1). The enzyme activities of antioxidative enzymes of exposed workers (group 2) were significantly lowered when compared to the control group (group 1).
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。