title: Effects of electromagnetic radiation exposure on stress-related behaviors and stress hormones in male wistar rats.
abstract: Studies have demonstrated that electromagnetic waves, as the one of the most important physical factors, may alter cognitive and non-cognitive behaviors, depending on the frequency and energy. Moreover, non-ionizing radiation of low energy waves e.g. very low frequency waves could alter this phenomenon via alterations in neurotransmitters and neurohormones. In this study, short, medium, and long-term exposure to the extremely low frequency electromagnetic field (ELF-EMF) (1 and 5 Hz radiation) on behavioral, hormonal, and metabolic changes in male Wistar rats (250 g) were studied. In addition, changes in plasma concentrations for two main stress hormones, noradrenaline and adrenocorticotropic hormone (ACTH) were evaluated. ELF-EMF exposure did not alter body weight, and food and water intake. Plasma glucose level was increased and decreased in the groups which exposed to the 5 and 1Hz wave, respectively. Plasma ACTH concentration increased in both using frequencies, whereas nor-adrenaline concentration showed overall reduction. At last, numbers of rearing, sniffing, locomotor activity was increased in group receiving 5 Hz wave over the time. In conclusions, these data showed that the effects of 1 and 5 Hz on the hormonal, metabolic and stress-like behaviors may be different. Moreover, the influence of waves on stress system is depending on time of exposure.
authors.affiliation: Department of Biology, Science and research Branch, Islamic Azad University, Tehran.
authors.forename: Seyed Mohammad
authors.initials: SM
authors.lastname: Mahdavi
authors.affiliation: Neuroscience Research Center, Bagiyatallah University of Medical Sciences, Tehran, Iran.
authors.forename: Hedayat
authors.initials: H
authors.lastname: Sahraei
authors.affiliation: Department of Biology, Science and research Branch, Islamic Azad University, Tehran.
authors.forename: Parichehreh
authors.initials: P
authors.lastname: Yaghmaei
authors.affiliation: Neuroscience Research Center, Bagiyatallah University of Medical Sciences, Tehran, Iran.
authors.forename: Hassan
authors.initials: H
authors.lastname: Tavakoli
keywords: Adrenaline; Adrenocorticotropic Hormone (ACTH); Corticosterone; Low-frequency electro-magnetic field; Stress