Abstract
The aim of the study was to evaluate the role of selenium (Se) in childhood autoimmune thyroiditis regarding its effect on thyroid-stimulating hormone (TSH), free thyroxine (fT4), thyroid peroxidase antibodies (TPOAb), thyroglobulin antibody (TgAb), and thyroid morphology. Newly diagnosed 23 euthyroid children (mean age, 12.3 +/- 2.4 years) with Hashimoto thyroiditis (HT) received only 50 microg L-selenomethionine per day for 3 months. The baseline basal urinary iodine level, serum Se, TSH, fT4, TPOAb, and TgAb concentrations, and thyroid morphology by ultrasound were detected. We reanalyzed the TPOAb and TgAb changes at the 3rd month and then compared the thyroid morphology with 30 healthy individuals (mean age, 12.1 +/- 2.1 years) at the 6th month. Serum TPOAb, TgAb, and thyroid echogenicity were unchanged with Se supplementation. A prominent decrease in thyroid volume was noteworthy; 35% of patients showed a thyroid volume regression rate of > or = 30%. In terms of TPOAb and TgAb, Se may not benefit in the euthyroid period of HT, but Se supplementation seems to lead a favorable response in thyroid volume regression.
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