摘要
用视频显示终端（ＶＤＴ）产生的磁通密度峰值为４μＴ和４０μＴ，频率为１５．６ｋＨｚ低频脉冲磁场和甲基硝基亚硝酸胍（ＭＮＮＧ，已知可损伤ＤＮＡ的致癌剂）对培养的人羊膜细胞进行７２ｈ的辐射及接触，结果得出４０μＴ低频脉冲磁场辐射能增加ＭＮＮＧ引起的细胞３Ｈ／１４Ｃ放射活性比值；４μＴ低频脉冲磁场辐射则不能增加其放射活性比值，表明了ＶＤＴ低频脉冲磁场的磁通密度峰值在４０μＴ的情况下。
Cultured FL cells were exposed for 72 hrs to 15.6kHz low frequency pulsed magnetic field produced by visual display terminals (VDT) at 40μT and 4μT peak to peak (p p). As compared with the control (sham exposure), MNNG induced an increase in the ratio of 3H/ 14 C cellular isotope activity by the magnetic field, with statistical significance at 40μT and without statistical significance at 4μT. The result showed that VDT pulsed magnetic field at 40μT (p p) can enhance MNNG induced DNA damage in cultured FL cells.
出处
《中国生物医学工程学报》
EI
CAS
CSCD
北大核心
1996年第2期128-131,共4页
Chinese Journal of Biomedical Engineering
基金
国家自然科学基金
