Abstract
Introduction and purpose: Selenium is essential for the proper course of many physiological and biochemical processes in the human body. It plays a large role in ensuring proper immunoendocrine function. The organ with the greatest amount of selenium per gram of tissue is the thyroid gland. This element builds enzymes involved in antioxidant processes - peroxidase, as well as deiodinases involved in the metabolism of thyroid hormones. There are scientific reports showing a beneficial effect of selenium supplementation in autoimmune diseases of the thyroid gland. The aim of this study is to summarize the current knowledge on the relationship between selenium deficiency and the development of thyroid dysfunction. Description of the state of knowledge: There is a correlation between selenium deficiency and the functioning of the thyroid gland. It has been shown that selenium levels are often lowered in patients with autoimmune thyroiditis. Research shows that selenium supplementation may lower TPOAb and TgAb antibody levels in patients with Hashimoto's disease. In patients with Graves' orbitopathy, administration of selenium resulted in delayed progression of orbitopathy and less disease severity. There are reports that supplementation with this element may also increase the effectiveness of antithyroid drugs in patients with Graves-Basedow disease. There was also an association between selenium deficiency and the development of goiter and thyroid nodules. Conclusions: Selenium plays an important role in the proper functioning of the thyroid gland. Although the specific role of selenium in the pathogenesis of thyroid disease is still under investigation, there are numerous reports saying that its deficiency may affect it. More research is needed on the relationship between selenium concentration and the regulation of thyroid function, because introducing it into the treatment regimen of thyroid disorders may give hope for better therapeutic effects.
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