Serum Levels of 8-OHdG in Patients with Hashimoto's Thyroiditis

Objective: A growing body of evidence shows a close relationship between oxidative stress and autoimmune conditions such as Hashimoto's thyroiditis (HT). Among different markers of oxidative damage, 8-hydroxydeoxyguanosine (8-OHdG) is a ubiquitous marker and broadly used in research studies. Therefore, this study aimed to measure the level of 8-OHdG in the sera of patients with HT and healthy control (HC) participants. Material and Methods: In this study, patients were diagnosed with clinical (n=23) and subclinical (n=25) hypothyroidism because of HT and compared with 35 healthy participants. 8-OHdG was measured using enzyme-linked immunosorbent assay in patients and HC participants. Results: No significant difference was observed in the mean serum 8-OHdG levels between patients and HC participants. Conclusion: The results of this preliminary study do not support the fact that the serum level of 8-OHdG is a biomarker of oxidative stress in patients with HT. However, more detailed studies are needed to reveal the exact role of 8-OHdG in this autoimmune disease of the thyroid gland.