OBJECTIVES: The aims of this study were to measure serum levels of brain-derived neurotrophic factor (BDNF) in patients with type 2 diabetes mellitus (T2DM) and to investigate the association of these BDNF levels with biomarkers of glucose metabolism and insulin resistance. DESIGN AND METHODS: We studied 112 patients with T2DM and 80 age- and gender-matched control subjects. RESULTS: Serum BDNF levels were significantly lower in patients with T2DM compared to control subjects (15.5+/-5.2 ng/mL vs. 20.0+/-7.3 ng/mL, P<0.01). In patients with T2DM, BDNF levels were significantly higher in females than in males (P<0.01). In the female patients, BDNF was positively related to immunoreactive insulin (IRI) (rho=0.458, P<0.05) and HOMA-R (rho=0.444, P<0.05). Stepwise multiple regression analysis showed a significant relationship between BDNF and IRI (F=5.294, P<0.05) in female patients with diabetes. CONCLUSIONS: These findings suggest that BDNF may contribute to glucose metabolism.
OBJECTIVES: The aims of this study were to measure serum levels of brain-derived neurotrophic factor (BDNF) in patients with type 2 diabetes mellitus (T2DM) and to investigate the association of these BDNF levels with biomarkers of glucose metabolism and insulin resistance. DESIGN AND METHODS: We studied 112 patients with T2DM and 80 age- and gender-matched control subjects. RESULTS: Serum BDNF levels were significantly lower in patients with T2DM compared to control subjects (15.5+/-5.2 ng/mL vs. 20.0+/-7.3 ng/mL, P<0.01). In patients with T2DM, BDNF levels were significantly higher in females than in males (P<0.01). In the female patients, BDNF was positively related to immunoreactive insulin (IRI) (rho=0.458, P<0.05) and HOMA-R (rho=0.444, P<0.05). Stepwise multiple regression analysis showed a significant relationship between BDNF and IRI (F=5.294, P<0.05) in female patients with diabetes. CONCLUSIONS: These findings suggest that BDNF may contribute to glucose metabolism.
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