Serum GDNF levels and anxiety disorders in a population-based study of young adults.

Clin Chim Acta

Translational Science on Brain Disorders, Clinical Neuroscience Laboratory, Department of Health and Behavior, Catholic University of Pelotas, RS, Brazil; Technology Application in Neurosciences, Department of Electronic Engineering and Computer, Catholic University of Pelotas.

Published: October 2018

Objective: The aim of this study was to verify the serum GDNF levels in individuals with anxiety disorder (AD) in a population-based study.

Methods: This was a cross-sectional study population-based, with people aged 18 to 35. AD's assessment was performed using the Mini International Neuropsychiatric Interview (M.I.N.I). Serum GDNF was measured by ELISA using a commercial kit.

Results: The prevalence was 3.3% for post-traumatic stress disorder, 6.7% for panic disorders, 17% generalized anxiety disorder, 5.1% for obsessive- compulsive disorder and 7.5% for social phobia. Serum GDNF levels was higher in individuals with panic disorders (p = 0.013), generalized anxiety (p = 0.035), obsessive- compulsive disorder (p = 0.005) and social phobia (p = 0.004), when compared to individuals without ADs. Only post traumatic stress disorder is not associated with serum GDNF levels (p = 0.119).

Conclusion: In this paper, we observed increased serum levels of GDNF in individuals with anxiety disorders, suggesting that this biomarker can be used as a putative marker for AD's. The knowledge of the physiological changes related to anxiety disorders can provide a better understanding of AD's pathogenesis, as well as, mechanisms involved in the progression of this condition.

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http://dx.doi.org/10.1016/j.cca.2018.06.017DOI Listing

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