The effect of exposure to 100 or 50 microT, 50 Hz, vertical magnetic field on the excretion of 6-sulphatoxymelatonin (6SM) in the nocturnal urine of rats was studied. Twelve male Wistar rats were kept under 12:12 hr light:dark conditions. The nocturnal urine of animals was collected in metabolic cages over 4 consecutive weeks. The concentration of 6SM in the rat urine was measured by 125I radioimmunoassay and normalized to creatinine concentration. After the first week of urine collection, 6 rats were exposed to 100 microT or 50 microT flux density magnetic fields (MF) for 8 hr daily for 1 week. It was found that the excretion of the primary metabolite of melatonin in the urine, 6SM, did not show statistically significant changes during and after magnetic field exposure.

中文翻译：

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暴露于50 Hz的一周中，垂直磁场不会减少雄性wistar大鼠的尿6-硫氧嘧啶褪黑素排泄。

研究了暴露于100或50 microT，50 Hz的垂直磁场对大鼠夜间尿液中6-巯基氧基褪黑素（6SM）排泄的影响。将12只雄性Wistar大鼠保持在12：12hr的光：暗条件下。连续4周将动物的夜间尿液收集在代谢笼中。通过125 I放射免疫测定法测量大鼠尿液中6SM的浓度，并将其标准化为肌酐浓度。收集尿液的第一周后，每天将6只大鼠暴露于100 microT或50 microT的通量密度磁场（MF）中，每天8小时，持续1周。发现在磁场暴露期间和之后，褪黑激素在尿中的主要代谢产物6SM的排泄没有显示统计学上的显着变化。