4.5 Article

Low plasma levels of brain derived neurotrophic factor are potential risk factors for diabetic retinopathy in Chinese type 2 diabetic patients

Journal

MOLECULAR AND CELLULAR ENDOCRINOLOGY
Volume 420, Issue C, Pages 152-158

Publisher

ELSEVIER IRELAND LTD
DOI: 10.1016/j.mce.2015.10.010

Keywords

Brain derived neurotrophic factor; Type 2 diabetes; Diabetic retinopathy

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Previous studies suggested that neurotrophins play a role in the diabetic retinopathy (DR). We therefore evaluated the role of plasma brain derived neurotrophic factor (BDNF) levels in Chinese type 2 diabetic patients with and without diabetic retinopathy (DR). Plasma levels of BDNF were determined in type 2 diabetic patients (N = 344). At baseline, the demographical and clinical data were taken. Multivariate analyses were performed using logistic regression models. Receiver operating characteristic curves (ROC) was used to test the overall predict accuracy of BDNF and other markers. Diabetic patients with DR and vision-threatening diabetic retinopathy (VTDR) had significantly lower BDNF levels on admission (P < 0.0001 both). BDNF improved the area under the receiver operating characteristic curve of the diabetes duration for DR from 0.76 (95% confidence interval [CI], 0.71-0.82) to 0.89 (95% CI, 0.82-0.95; P < 0.01) and for VDTR from 0.84 (95% CI, 0.78-0.92) to 0.95 (95% CI, 0.90-0.98; P < 0.01). Multivariate logistic regression analysis adjusted for common risk factors showed that plasma BDNF levels <= 12.4 ng/mL(1rd quartiles) was an independent marker of DR (OR = 3.92; 95%CI: 231-6.56) and VTDR (OR = 4.88; 95%CI: 2.21-9.30). The present study demonstrated that decreased plasma levels of BDNF were independent markers for DR and VDTR in Chinese type 2 diabetic patients, suggesting a possible role of BDNF in the pathogenesis of DR complications. (C) 2015 Elsevier Ireland Ltd. All rights reserved.

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