Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Biol Psychiatry. 2008 Sep 15;64(6):527-32. doi: 10.1016/j.biopsych.2008.05.005. Epub 2008 Jun 24.

Serum brain-derived neurotrophic factor, depression, and antidepressant medications: meta-analyses and implications.

Author information

  • 1Department of Psychiatry, Yale University School of Medicine, Connecticut Mental Health Center, New Haven, Connecticut 06519, USA.

Abstract

BACKGROUND:

Converging lines of evidence implicate the neurotrophin brain-derived neurotrophic factor (BDNF) in the pathophysiology of major depression. Recent studies have begun to explore the relationship between serum BDNF and depression.

METHODS:

We conducted meta-analyses of 11 studies examining differences in serum BDNF content between depressed and nondepressed subjects (N = 748), and eight studies comparing pre- and post-antidepressant treatment serum BDNF content (N = 220).

RESULTS:

The meta-analysis revealed strong evidence that BDNF levels were lower in depressed subjects than healthy control subjects (p < 6.8 x 10(-8)). Similarly, the second meta-analysis found significantly higher BDNF levels after antidepressant treatment (p = .003). There was no evidence of publication bias in the first (p = .376) or second (p = .571) meta-analysis and no evidence that either meta-analysis was unduly influenced by any one study.

CONCLUSIONS:

These findings provide strong evidence to suggest that serum BDNF levels are abnormally low in patients suffering from major depressive disorder and that the BDNF levels are elevated following a course of antidepressant treatment. Although the relationship of our findings to pathophysiology of depression and the mechanism of drug action remains to be determined, the measure may have potential use as a biomarker for psychiatric disorders or as a predictor of antidepressant efficacy.

PMID:
18571629
[PubMed - indexed for MEDLINE]
PMCID:
PMC2597158
Free PMC Article

Images from this publication.See all images (2)Free text

Figure 1
Figure 2
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science Icon for PubMed Central
    Loading ...
    Write to the Help Desk