Effects of 171 MHz Low‐Intensity Electromagnetic Field on Glucocorticoid and Mineral Corticoid Activity of the Adrenal Glands of Rats

Abstract

A sub-acute electromagnetic field (EMF) biological effect study was carried out on rats exposed in the Transverse ElectroMagnetic exposure chamber at 171 MHz Continuous Wave (CW). The experiments involved three exposure levels (15, 25, and 35 V/m) for 15 days with triplicate parallel sham-exposed controls in each series. All exposure conditions were simulated for the evaluation of the electromagnetic energy distribution and specific absorption rate (SAR) in the rat phantoms. Studies have shown a biphasic biological response depending on time and absorbed electromagnetic energy. Under low SAR, approximately 0.006 W/kg, EMF exposure leads to the stimulation of adrenal gland activity. This process is accompanied by an initial increase of daily excretion of corticosterone and Na + , which is seen as a higher Na + /K + ratio, followed by a decrease of these parameters over time. It is possible that EMF exposure causes a stress response in animals, which is seen as an increased adrenal activity. Bioelectromagnetics. 2019;40:578-587.

Association Between Mobile Phone Radiation Exposure and the Secretion of Melatonin and Cortisol, Two Markers of the Circadian System: A Review

“…Here again, different signals were used (900, 1,800, 1,900, 2,100, 2,400 MHz) and the methods in terms of SAR and duration of exposure were also different. When looking at these studies, we observe that the lowest SAR applied (0.006 W/kg) led to an increase of corticosterone levels in rats [Perov et al, 2019], while some studies with high SARs, such as 6 or 10 W/kg, did not find any effect on corticosterone levels [Prochnow et al, 2011;Bouji et al, 2016]. As we know, the thermal effect has been observed at SAR above 4 W/kg [ICNIRP, 1998[ICNIRP, , 2020.…”