[Effects of whole-body microwave exposure on the plasma adrenocorticotropic hormone, thyroid-stimulating hormone and thyroid hormones in rats].
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 267-306 g (light group) and 352-387 g (heavy group) were exposed to microwaves with a frequency of 2,450 MHz at the power densities of 5 and 10 mW/cm2 under an ambient temperature of 21 degrees C to 23 degrees C for an hour. Rectal temperatures were increased by 1.0 degrees C at 5 mW/cm2 and 2.1 degrees C at 10 mW/cm2 in the light group, and by 0.7 degrees C at 5 mW/cm2 and 1.5 degrees C at 10 mW/cm2 in the heavy group after microwave exposure. Plasma levels of ACTH increased significantly at 10 mW/cm2 in the light group and 5 and 10 mW/cm2 in the heavy group after microwave exposure. Plasma levels of TSH increased significantly at 10 mW/cm2 only in the light group. As for plasma levels of free T3, a significant decrease at 10 mW/cm2 was observed only in the heavy group. However, plasma levels of T4 did not change in either group after microwave exposure.
Inaba
R
R
Department of Public Health, School of Medicine, Kanazawa University.
Watanabe
S
S
Okada
A
A
Moroji
T
T
D000324:Adrenocorticotropic Hormone / Q000097:blood*; D000818:Animals; D008297:Male; D008872:Microwaves; D051381:Rats; D011919:Rats, Inbred Strains; D013972:Thyrotropin / Q000097:blood*; D013974:Thyroxine / Q000097:blood*; D014284:Triiodothyronine / Q000097:blood*; D014916:Whole-Body Irradiation
D014284:Triiodothyronine; D000324:Adrenocorticotropic Hormone; D013972:Thyrotropin; D013974:Thyroxine