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Introduction: Sclerostin is a glycoprotein known as a negative regulator of bone formation, predominantly expressed by mature &nbsp;osteocytes. There is no causative evidence information on the role of sclerostin in the pathogenesis of type 2 diabetes mellitus (T2DM) in humans.&nbsp; Aim: This study aimed to investigate the relationship between serum sclerostin levels and oxidative status and biochemical parameters in T2DM patients and healthy people. Materials and methods: This cross-sectional study, conducted in a clinical trial center, included 45 subjects with T2DM and 45 subjects as controls. Results: Serum sclerostin, total oxidative status (TOS), albumin, and ferritin levels were significantly higher in T2DM patients than in the control group (p<0.05). Total antioxidant status (TAS) was significantly higher in the control group (p<0.05). There was a weak positive correlation between sclerostin and TOS (r=0.23, p=0.03) and a weak negative correlation between sclerostin and TAS (r=&minus;0.28, p=0.03). Conclusions: We have demonstrated that serum sclerostin levels increase in patients with T2DM and that the increased sclerostin levels are associated with oxidative stress.

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