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Brain-derived neurotrophic factor and post-stroke depression.

Eric Zhang1, Ping Liao2,3,4

  • 1Western University of Health Sciences, Pomona, CA.

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|August 7, 2019
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Summary
This summary is machine-generated.

Lower brain-derived neurotrophic factor (BDNF) levels are linked to post-stroke depression (PSD). BDNF may be a target for new PSD treatments, potentially enhancing current antidepressant therapies.

Keywords:
antidepressantbrain-derived neurotrophic factorpost-stroke depressionstroke

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Molecular Biology

Background:

  • Brain-derived neurotrophic factor (BDNF) is crucial for cognitive function and increasingly recognized for its role in mood disorders.
  • Post-stroke depression (PSD) is a common complication, with lower serum BDNF levels observed in affected patients.
  • Antidepressants can boost BDNF expression, alleviating depressive symptoms, but this effect is absent in BDNF-deficient models.

Purpose of the Study:

  • To review the current understanding of BDNF's role in the development of post-stroke depression (PSD).
  • To explore the potential mechanisms linking stroke, BDNF dysregulation, and depression.
  • To identify BDNF as a potential therapeutic target for PSD.

Main Methods:

  • Literature review of studies investigating BDNF levels and function in the context of stroke and depression.
  • Analysis of existing research on the impact of stroke on BDNF expression and the effects of antidepressants on BDNF.
  • Synthesis of evidence regarding the pre-existing vulnerability and stroke-induced changes in BDNF.

Main Results:

  • Patients with PSD exhibit lower serum BDNF levels compared to non-depressed individuals.
  • Stroke-induced hypoxia may downregulate brain BDNF expression, contributing to PSD.
  • Pre-existing lower BDNF levels might predispose individuals to developing depression after stroke.

Conclusions:

  • BDNF plays a significant role in the pathophysiology of PSD.
  • Targeting BDNF expression could offer a novel therapeutic strategy for PSD.
  • Combined treatments modulating BDNF may enhance the efficacy of existing antidepressants for PSD.