Effect of Thyroxine Replacement Therapy on Serum Maresin 1 and NF-kB Levels in Patients with Hashimoto Thyroiditis

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Background/Objectives: This study aimed to investigate the effects of thyroxine replacement therapy (TRT) on serum Maresin 1 and nuclear factor kappa beta (NF-kB) levels in patients with Hashimoto’s thyroiditis (HT). Methods: A total of 90 patients were included in this study, 60 with HT and 30 without. Patients in the HT group were divided into two groups according to whether they received TRT. Group 1 included 30 patients who underwent TRT, and Group 2 comprised 30 patients who were newly diagnosed with HT, either euthyroid or hypothyroid. The analysis included serum levels of thyroid-stimulating hormone (TSH), free thyroxine (FT4), free triiodothyronine (FT3), thyroid peroxidase antibody (TPOAb), Maresin 1, and NF-kB. Results: The serum NF-kB level in the TRT group was significantly higher than that in the control and non-TRT groups. In the subgroup analysis of patients who did not receive TRT, the serum NF-kB level in euthyroid patients was significantly lower than that in hypothyroid patients. Maresin 1 levels in the control group were significantly higher than those in patients who did and did not receive TRT. The serum Maresin 1 level in the TRT group was significantly lower than that in the untreated group. Maresin 1 levels were higher in the euthyroid group than in the hypothyroid group. TPOAb levels were positively correlated with NF-kB and negatively correlated with Maresin 1. Conclusions: TRT maintains the euthyroid state in patients with HT, but may not contribute positively to the pro-anti-inflammatory balance in these patients.

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