Serum Adropin Levels Are Elevated in Patients With Hyperthyroidism.

Objective: Adropin is a unique hormone, which controls metabolism and energy homeostasis. Hyperthyroidism is a disease with a high metabolic rate that affects both glucose and lipid metabolism. We aimed to investigate the change of adropin levels and the association between adropin levels and clinical parameters in patients with hyperthyroidism. Methods: This cross-sectional study comprised 90 newly diagnosed patients with hyperthyroidism and 90 age- and gender-matched healthy controls. Circulating adropin levels and thyroid hormone levels were evaluated in each participant. Results: Compared with the healthy controls, the hyperthyroid patients had significantly higher levels of serum adropin (p < 0.001). In addition, adropin levels were positively correlated with free triiodothyronine (FT3) and free thyroxine (FT4), whereas they were negatively correlated with thyroid-stimulating hormone (TSH). A multivariate linear regression analysis showed that serum adropin concentrations were independently correlated with FT3 and TSH after adjustment for age, gender, and other confounding factors (FT3: β = 0.231, p < 0.05; TSH: β = -0.301, p < 0.05). Conclusions: Patients with hyperthyroidism had elevated serum adropin levels. And the serum adropin concentrations were independently correlated with the FT3 and TSH levels.