A suppression in melatonin secretion is one of the mechanisms proposed to explain the possible adverse effects of extremely low frequency magnetic fields (ELF-MF), but the results of research are inconclusive. This study investigated the effect of occupational ELF-MF exposure on 6-sulfatoximelatonin (6-OHMS). Exposure was monitored for three complete work shifts in 59 workers using personal exposure meters. Environmental exposure was also evaluated. Urinary 6-OHMS in morning samples, an indicator of night-time melatonin production, was measured. Urine was collected twice on Friday and the following Monday. Workers were classified according to ELF exposure as low exposed (<or=0.2 microT) or higher exposed (>0.2 microT): 6-OHMS did not differ between groups (P > .05) in either Friday or Monday urine samples. In addition, 6-OHMS was not related to exposure under multivariate analysis. The ratio between 6-OHMS in Monday versus Friday samples was also calculated to test the hypothesis of a possible variation in pineal function after 2 days, interruption of occupational ELF-MF exposure: again no exposure-related difference was observed. Our results do not support the hypothesis that occupational exposure to ELF-MF significantly influences melatonin secretion.

No association between occupational exposure to ELF magnetic field and urinary 6 – Sulfatoximelatonin in workers / Gobba, Fabriziomaria; Bravo, Giulia; Scaringi, Meri; L., Roccatto. - In: BIOELECTROMAGNETICS. - ISSN 0197-8462. - STAMPA. - 27:(2006), pp. 667-673.

No association between occupational exposure to ELF magnetic field and urinary 6 – Sulfatoximelatonin in workers

GOBBA, Fabriziomaria;BRAVO, Giulia;SCARINGI, Meri;
2006

Abstract

A suppression in melatonin secretion is one of the mechanisms proposed to explain the possible adverse effects of extremely low frequency magnetic fields (ELF-MF), but the results of research are inconclusive. This study investigated the effect of occupational ELF-MF exposure on 6-sulfatoximelatonin (6-OHMS). Exposure was monitored for three complete work shifts in 59 workers using personal exposure meters. Environmental exposure was also evaluated. Urinary 6-OHMS in morning samples, an indicator of night-time melatonin production, was measured. Urine was collected twice on Friday and the following Monday. Workers were classified according to ELF exposure as low exposed (0.2 microT): 6-OHMS did not differ between groups (P > .05) in either Friday or Monday urine samples. In addition, 6-OHMS was not related to exposure under multivariate analysis. The ratio between 6-OHMS in Monday versus Friday samples was also calculated to test the hypothesis of a possible variation in pineal function after 2 days, interruption of occupational ELF-MF exposure: again no exposure-related difference was observed. Our results do not support the hypothesis that occupational exposure to ELF-MF significantly influences melatonin secretion.
27
667
673
No association between occupational exposure to ELF magnetic field and urinary 6 – Sulfatoximelatonin in workers / Gobba, Fabriziomaria; Bravo, Giulia; Scaringi, Meri; L., Roccatto. - In: BIOELECTROMAGNETICS. - ISSN 0197-8462. - STAMPA. - 27:(2006), pp. 667-673.
Gobba, Fabriziomaria; Bravo, Giulia; Scaringi, Meri; L., Roccatto
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/584438
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