Main Article Content
Background. Various studies have shown the association of vitamin D deficiency with autoimmune diseases. Studies have found that vitamin D levels in patients with autoimmune thyroid diseases including Graves’ disease were lower than that in patients with non-autoimmune thyroid diseases such as toxic nodular goiter. Some studies have reported no such relationship between vitamin D level and autoimmune thyroid diseases. The purpose of the study: to compare serum vitamin D level in patients with Graves’ disease versus age and sex matched controls, to assess the correlation of vitamin D with thyroid status and thyrotropin receptor antibody titers. Materials and methods. 48 patients with Graves’ disease and 24 age and sex matched healthy individuals were recruited. Hormonal investigations that included serum thyroid stimulating hormone (TSH), free thyroxine (fT4), free triiodothyronine (fT3), as well as calcium, 25-hydroxyvitamin D (25(OH)D), parathyroid hormone (PTH), thyroid stimulating hormone receptor antibody (TSH-Ab) were done for all subjects. Results. The patients with Graves’ disease had significantly lower 25(OH)D levels (16.3 ± 1.4 ng/ml) as compared to control subjects (22.8 ± 1.6 ng/ml) (p = 0.024). TSH levels and TSH-Ab titers differed significantly between vitamin D deficient Graves’ disease group (25(OH)D < 20 ng/ml) and vitamin D non deficient Graves’ disease group (25(OH)D ≥ 20 ng/ml). Thyroid volume did not differ significantly between these groups. Serum vitamin D level correlated significantly with TSH and TSH-Ab titers in patients with Graves’ disease. Conclusions. Serum vitamin D levels are significantly lower in patients with Graves’ disease. Significant correlation between vitamin D and TSH and TSH-Ab titers was found in these patients.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Our edition uses the copyright terms of Creative Commons for open access journals.
Authors, who are published in this journal, agree with the following terms:
- The authors retain rights for authorship of their article and grant to the edition the right of first publication of the article on a Creative Commons Attribution 4.0 International License, which allows others to freely distribute the published article, with the obligatory reference to the authors of original works and original publication in this journal.
- Directing the article for the publication to the editorial board (publisher), the author agrees with transmitting of rights for the protection and using the article, including parts of the article, which are protected by the copyrights, such as the author’s photo, pictures, charts, tables, etc., including the reproduction in the media and the Internet; for distributing; for the translation of the manuscript in all languages; for export and import of the publications copies of the writers’ article to spread, bringing to the general information.
- The rights mentioned above authors transfer to the edition (publisher) for the unlimited period of validity and on the territory of all countries of the world.
- The authors guarantee that they have exclusive rights for using of the article, which they have sent to the edition (publisher). The edition (the publisher) is not responsible for the violation of given guarantees by the authors to the third parties.
- The authors have the right to conclude separate supplement agreements that relate to non-exclusive distribution of their article in the form in which it had been published in the journal (for example, to upload the work to the online storage of the journal or publish it as part of a monograph), provided that the reference to the first publication of the work in this journal is included.
- The policy of the journal permits and encourages the publication of the article in the Internet (in institutional repository or on a personal website) by the authors, because it contributes to productive scientific discussion and a positive effect on efficiency and dynamics of the citation of the article.
Villa A, Corsello A, Cintoni M, et al. Effect of vitamin D supplementation on TSH levels in euthyroid subjects with autoimmune thyroiditis. Endocrine. 2020;10.1007/s12020-020-02274-9. doi:10.1007/s12020-020-02274-9.
Krysiak R, Kowalcze K, Okopień B. The effect of vitamin D on thyroid autoimmunity in euthyroid men with autoimmune thyroiditis and testosterone deficiency. Pharmacol Rep. 2019;71(5):798-803. doi:10.1016/j.pharep.2019.04.010.
Misharin A, Hewison M, Chen CR, et al. Vitamin D deficiency modulates Graves' hyperthyroidism induced in BALB/c mice by thyrotropin receptor immunization. Endocrinology. 2009;150(2):1051-1060. doi:10.1210/en.2008-1191.
Pankiv VI, Yuzvenko TYu, Pankiv IV. Type 2 diabetes mellitus and subclinical hypothyroidism: focusing on the role of cholecalciferol. Problems of Endocrine Pathology. 2019;(2):46-51. doi:10.21856/j-PEP.2019.2.07.
Li X, Wang G, Lu Z, Chen M, Tan J, Fang X. Serum 25-hydroxyvitamin D predict prognosis in radioiodine therapy of Graves' disease. J Endocrinol Invest. 2015;38(7):753-759. doi:10.1007/s40618-015-0252-4.
Mangaraj S, Choudhury AK, Swain BM, Sarangi PK, Mohanty BK, Baliarsinha AK. Evaluation of Vitamin D Status and its Impact on Thyroid Related Parameters in New Onset Graves' Disease- A Cross-sectional Observational Study. Indian J Endocrinol Metab. 2019;23(1):35-39. doi:10.4103/ijem.IJEM_183_18.