Premium
All‐night exposure to EMF does not alter urinary melatonin, 6‐OHMS or immune measures in older men and women
Author(s) -
Graham Charles,
Sastre Antonio,
Cook Mary R.,
Gerkovich Mary M.
Publication year - 2001
Publication title -
journal of pineal research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.881
H-Index - 131
eISSN - 1600-079X
pISSN - 0742-3098
DOI - 10.1034/j.1600-079x.2001.310203.x
Subject(s) - melatonin , morning , immune system , endocrinology , medicine , urine , urinary system , metabolite , evening , chemistry , physiology , immunology , physics , astronomy
Healthy men (n=22) and women (n=24), 40–60 years of age, were exposed all‐night (23:00–07:00 hr) to 60‐Hz magnetic fields at an intensity (resultant flux density=28.3 microTesla [μT]) well within the occupational‐exposure range, or sham exposed under equivalent, counter‐balanced, no‐exposure (≤0.2 μT) control conditions. Concentrations of melatonin, and the major metabolite of melatonin, 6‐hydroxymelatonin‐sulfate (6‐OHMS), in first‐void morning urine were not altered in either gender by exposure to the magnetic field, compared to control conditions. Statistical analysis also failed to reveal any evidence for exposure‐related alterations in blood concentrations of multiple hematologic and immune system parameters (CD3, CD4, CD8, natural killer [NK] cells). The present results replicate and extend earlier negative findings based on the exposure of young men to power‐frequency magnetic fields.