Summary
International Symposium on Antennas and Propagation
2011
Session Number:FrA3
Session:
Number:FrA3-2
Influence of Whole Body Exposure to 915 MHz RFID on Melatonin System
Young Hwan Ahn, Hye Sun Kim, Man-Jeong Paik, Gwang Lee, Jae-Seon Lee, Yun-Sil Lee, Nam Kim,
pp.-
Publication Date:2011/10/25
Online ISSN:2188-5079
Summary:
As a part of investigation of the potential risks of 915MHz RFID to human health, we studied whether the 915MHz RFID exposure to rats can cause any changes in secretion of melatonin. For this trial, a reverberation chamber was used for animal study as a wholebody exposure system at 915 MHz RFID and its validity has been verified. The animals were exposed for 1 or 8 hrs during the day-time or the night-time, 5 days a week (whole body SAR 4W/kg) for 2 weeks. The urine of rats was collected separately during the daytime and the night-time. The urinary level of melatonin was quantified by gas chromatography?mass spectrometry (GC?MS) with the simultaneous analysis of melatonin and its precursors. Our results suggest that night-time long-duration exposure to high energy RFID may significantly induce suppression of melatonin synthesis, although changes under the same-level exposure during the day-time did not reach statistical significance. We also suggest that decreased melatonin synthesis was related to suppression of CREB phosphorylation followed by decreased AANAT transcription