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Eight hours of nocturnal 915 MHz radiofrequency identification (RFID) exposure reduces urinary levels of melatonin and its metabolite via pineal arylalkylamine N-acetyltransferase activity in male rats.

Authors
Kim, HS  | Paik, MJ | Lee, YH | Lee, YS | Choi, HD | Pack, JK | Kim, N | Ahn, YH
Citation
International journal of radiation biology, 91(11). : 898-907, 2014
Journal Title
International journal of radiation biology
ISSN
0955-30021362-3095
Abstract
PURPOSE: We investigated the effects of whole-body exposure to the 915 MHz radiofrequency identification (RFID) on melatonin biosynthesis and the activity of rat pineal arylalkylamine N-acetyltransferase (AANAT).

MATERIALS AND METHODS: Rats were exposed to RFID (whole-body specific absorption rate, 4 W/kg) for 8 h/day, 5 days/week, for weeks during the nighttime. Total volume of urine excreted during a 24-h period was collected after RFID exposure. Urinary melatonin and 6-hydroxymelatonin sulfate (6-OHMS) was measured by gas chromatography-mass spectrometry (GC-MS) and enzyme-linked immunosorbent assay (ELISA), respectively. AANAT enzyme activity was measured using liquid biphasic dif-13 fusion assay. Protein levels and mRNA expression of AANAT was 14 measured by Western blot and reverse transcription polymerase 15 chain reaction (RT-PCR) analysis, respectively.

RESULTS: Eight hours of nocturnal RFID exposure caused a significant reduction in both urinary melatonin (p = 0. 003) and 6-OHMS (p = 0. 026). Activity, protein levels, and mRNA expression of AANAT were suppressed by exposure to RFID (p < 0. 05).

CONCLUSIONS: Our results suggest that nocturnal RFID exposure can cause reductions in the levels of both urinary melatonin and 6-OHMS, possibly due to decreased melatonin biosynthesis via suppression of Aanat gene transcription in the rat pineal gland.
MeSH

DOI
10.3109/09553002.2015.1075075
PMID
26189731
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Neurosurgery
Ajou Authors
김, 혜선  |  안, 영환
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