Journal of Radiation Research
Online ISSN : 1349-9157
Print ISSN : 0449-3060
Regular Papers
Elevation of Plasma Corticosterone Levels and Hippocampal Glucocorticoid Receptor Translocation in Rats: a Potential Mechanism for Cognition Impairment Following Chronic Low-power-density Microwave Exposure
Maoquan LIYanyan WANGYanwen ZHANGZhou ZHOUZhengping YU
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2008 Volume 49 Issue 2 Pages 163-170

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Abstract

The goal of this study was to investigate whether glucocorticoids (GCs) take part in cognition impairment after exposure to chronic low-power-density microwave (MW) fields. We exposed Wistar rats to a 2.45-GHz pulsed MW field at an average power density of 1 mW/cm2 for 3 h daily, for up to 30 days. Our results show that MW-exposed rats had significant deficits in spatial learning and memory performance. MW exposure increased levels of plasma corticosterone, and consequently GC receptor (GR) nuclear translocation and apoptosis in the hippocampus. However, co-administration of the GR antagonist RU486 with MW exposure partially reversed the cognitive impairment and neuronal loss. These data indicate that GCs might contribute to the cognition deficit induced by chronic low-power-density MW exposure.

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© 2008 by Journal of Radiation Research Editorial Committee
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