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Plasma BDNF Levels Vary in Relation to Body Weight in Females

Pillai, A and Bruno, D and Sarreal, AS and Hernando, RT and Saint-Louis, LA and Nierenberg, J and Ginsberg, SD and Pomara, N and Mehta, PD and Zetterberg, H and Blennow, K and Buckley, PF (2012) Plasma BDNF Levels Vary in Relation to Body Weight in Females. PLoS ONE, 7 (7). e39358-e39358. ISSN 1932-6203

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Abstract

Brain derived neurotrophic factor (BDNF) has been implicated in the pathophysiology of depression as well as neuropsychiatric and neurodegenerative disorders. Recent studies show a role of BDNF in energy metabolism and body weight regulation. We examined BDNF levels in plasma and cerebrospinal fluid (CSF) samples from age matched elderly depressed and control subjects. Also, the association of BDNF levels with age, gender, body weight, body mass index (BMI), and cognitive performance was evaluated. We did not find any significant differences in plasma and CSF BDNF levels between depressed and control subjects. Plasma BDNF levels were negatively correlated with age (but not with BMI and body weight), when analyses were performed including both depressed and control subjects. A significant reduction in plasma BDNF levels was observed in females as compared to male subjects, and the change in BDNF levels were significantly and positively related to body weight in females. Furthermore, significant increases in Total Recall and Delayed Recall values were found in females as compared to males. In conclusion, the lower BDNF levels observed in females suggest that changes in peripheral BDNF levels are likely secondary to an altered energy balance. However, further studies using larger sample size are warranted.

Item Type: Article
Uncontrolled Keywords: MD Multidisciplinary
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Natural Sciences and Psychology
Publisher: Public Library of Science
Date Deposited: 02 Mar 2016 14:31
Last Modified: 02 Mar 2016 14:31
DOI or Identification number: 10.1371/journal.pone.0039358
Editors: Zhang, XY
URI: http://researchonline.ljmu.ac.uk/id/eprint/3043

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