Effects of whole-body exposure to 915 MHz RFID on secretory functions of the thyroid system in rats. 2013

Hye Sun Kim, and Man-Jeong Paik, and Yeon Ju Kim, and Gwang Lee, and Yun-Sil Lee, and Hyung-Do Choi, and Byung Chan Kim, and Jeong-Ki Pack, and Nam Kim, and Young Hwan Ahn
Department of Neurosurgery, Ajou University School of Medicine, Suwon, Korea.

As a part of an investigation on the potential risks of radiofrequency identification (RFID) on human health, we studied whether exposure to 915 MHz RFID in rats significantly affected the secretory function of the thyroid system. A reverberation chamber was used as a whole-body exposure system. Male Sprague-Dawley rats were exposed for 8 h per day, 5 days per week, for a duration of 2, 4, 8, or 16 weeks. The estimated whole-body average specific absorption rate (SAR) varied from 3.2 to 4.6 W/kg depending on the age/mass of the animals for the field of the 915 MHz RFID reader. Plasma levels of triiodothyronine (T3), thyroxine (T4), and thyroid-stimulating hormone (TSH) were evaluated via enzyme-linked immunosorbent assay. Morphological changes in the thyroid gland were then analyzed. No changes in T3, T4, or TSH were observed over time between the sham- and RFID-exposed groups. We suggest that subchronic exposure to 915 MHz RFID at a SAR of 4 W/kg does not cause significant effects on thyroid secretory function.

UI MeSH Term Description Entries
D008297 Male Males
D011846 Radio Waves Electromagnetic waves with frequencies between about 3 kilohertz (very low frequency - VLF) and 300,000 megahertz (extremely high frequency - EHF). They are used in television and radio broadcasting, land and satellite communications systems, radionavigation, radiolocation, and DIATHERMY. The highest frequency radio waves are MICROWAVES. Hertzian Waves,High Frequency Waves,Radiowave,Radiowaves,Short Waves,Very High Frequency Waves,Frequency Wave, High,Frequency Waves, High,High Frequency Wave,Radio Wave,Short Wave,Wave, High Frequency,Wave, Radio,Wave, Short,Waves, Hertzian,Waves, High Frequency,Waves, Radio,Waves, Short
D001831 Body Temperature The measure of the level of heat of a human or animal. Organ Temperature,Body Temperatures,Organ Temperatures,Temperature, Body,Temperature, Organ,Temperatures, Body,Temperatures, Organ
D001835 Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms. Body Weights,Weight, Body,Weights, Body
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013961 Thyroid Gland A highly vascularized endocrine gland consisting of two lobes joined by a thin band of tissue with one lobe on each side of the TRACHEA. It secretes THYROID HORMONES from the follicular cells and CALCITONIN from the parafollicular cells thereby regulating METABOLISM and CALCIUM level in blood, respectively. Thyroid,Gland, Thyroid,Glands, Thyroid,Thyroid Glands,Thyroids
D013963 Thyroid Hormones Natural hormones secreted by the THYROID GLAND, such as THYROXINE, and their synthetic analogs. Thyroid Hormone,Hormone, Thyroid,Hormones, Thyroid
D014916 Whole-Body Irradiation Irradiation of the whole body with ionizing or non-ionizing radiation. It is applicable to humans or animals but not to microorganisms. Radiation, Whole-Body,Total Body Irradiation,Irradiation, Total Body,Irradiation, Whole-Body,Whole-Body Radiation,Irradiation, Whole Body,Irradiations, Total Body,Irradiations, Whole-Body,Radiation, Whole Body,Radiations, Whole-Body,Total Body Irradiations,Whole Body Irradiation,Whole Body Radiation,Whole-Body Irradiations,Whole-Body Radiations
D017207 Rats, Sprague-Dawley A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company. Holtzman Rat,Rats, Holtzman,Sprague-Dawley Rat,Rats, Sprague Dawley,Holtzman Rats,Rat, Holtzman,Rat, Sprague-Dawley,Sprague Dawley Rat,Sprague Dawley Rats,Sprague-Dawley Rats
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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