Regularly scheduled, day-time, slow-onset 60 Hz electric and magnetic field exposure does not depress serum melatonin concentration in nonhuman primates
- Southwest Research Inst., San Antonio, TX (United States)
- Univ. of Texas Health Science Center, San Antonio, TX (United States)
Experiments conducted with laboratory rodents indicate that exposure to 60 Hz electric fields or magnetic fields can suppress nocturnal melatonin concentrations in pineal gland and blood. In three experiments employing three field-exposed and three sham-exposed nonhuman primates, each implanted with an indwelling venous cannula to allow repeated blood sampling, the authors studied the effects of either 6 kV/m and 50 {micro}T (0.5 G) or 30 kV/m and 100 {micro}T (1.0 G) on serum melatonin patterns. The fields were ramped on and off slowly, so that no transients occurred. Extensive quality control for the melatonin assay, computerized control and monitoring of field intensities, and consistent exposure protocols were used. No changes in nocturnal serum melatonin concentration resulted from 6 weeks of day-time exposure with slow field onset/offset and a highly regular exposure protocol. These results indicate that, under the conditions tested, day-time exposure to 60 Hz electric and magnetic fields in combination does not result in melatonin suppression in primates.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-80RA50219
- OSTI ID:
- 220641
- Journal Information:
- Bioelectromagnetics, Journal Name: Bioelectromagnetics Journal Issue: Suppl 3; ISSN 0197-8462; ISSN BLCTDO
- Country of Publication:
- United States
- Language:
- English
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Sat Dec 30 23:00:00 EST 1995
· Bioelectromagnetics
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OSTI ID:220642
Investigation of effects of 60-Hz electric and magnetic fields on operant and social behavior and on the neuroendocrine system of nonhuman primates: Neuroendocrine portion of Experiment IV
Technical Report
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Mon Aug 31 00:00:00 EDT 1992
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OSTI ID:7110397
Investigation of effects of 60-Hz electric and magnetic fields on operant and social behavior and on the neuroendocrine system of nonhuman primates: Neuroendocrine portion of Experiment IV. Quarterly report No. 38
Technical Report
·
Mon Aug 31 00:00:00 EDT 1992
·
OSTI ID:10179462