マイクロ波全身暴露のラット血漿副腎皮質刺激ホルモン,甲状腺刺激ホルモンおよび甲状腺ホルモンへおよぼす影響

概要

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To investigate the effects of whole-body microwave exposure on plasma adrenocorticotropic hormone (ACTH), thyroid-stimulating hormone (TSH), thyroxine (T4) and free triiodothyronine (T3) levels, rats weighing 267-306g (light group) and 352-387g (heavy group) were exposed to microwaves with a frequency of 2, 450MHz at the power densities of 5 and 10mW/cm2 under an ambient temperature of 21°C to 23°C for an hour. Rectal temperatures were increased by 1.0°C at 5mW/cm2 and 2.1°C at 10mW/cm2 in the light group, and by 0.7°C at 5mW/cm2 and 1.5°C at 10mW/cm2 in the heavy group after microwave exposure. Plasma levels of ACTH increased significantly at 10mW/cm2 in the light group and 5 and 10mW/cm2 in the heavy group after microwave exposure. Plasma levels of TSH increased significantly at 10mW/cm2 only in the light group. As for plasma levels of free T3, a significant decrease at 10mW/cm2 was observed only in the heavy group. However, plasma levels of T4 did not change in either group after microwave exposure.