[Effect of ultrasonic energy on serum thyronine levels]

Changes of total iodine (T.I.) and protein-bound iodine (P.B.I.) content in the blood serum of male rats exposed to ultrasound of different intensity (0.2; 0.6 and 1.0 W/cm2) are described and examined at different time intervals after the exposure. Increased content of T.I. and P.B.I. in the blood serum was observed, chronic group included. The above effect is suggested to result from activated secretion of serotonins to the perypheric blood channel. It is connected with an increased amount of thyreotropic hormone in blood at a decreased content of tyronins in the thyroid gland, and with the effect of discoupling of oxidative phosphorylation induced by ultrasound in the liver mitochondria at a decreased consumption of oxygen.