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Related Experiment Video

Updated: Jun 16, 2026

Real-time Imaging of Axonal Transport of Quantum Dot-labeled BDNF in Primary Neurons
10:53

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Published on: September 15, 2014

Brain-derived neurotrophic factor and suicide pathogenesis.

Yogesh Dwivedi1

  • 1Psychiatric Institute, Department of Psychiatry, College of Medicine, University of Illinois at Chicago, Chicago, Illinois 60612, USA. ydwivedi@psych.uic.edu

Annals of Medicine
|February 20, 2010
PubMed
Summary
This summary is machine-generated.

Brain-derived neurotrophic factor (BDNF) signaling abnormalities are linked to suicidal behavior. Reduced BDNF expression and altered receptor activity suggest BDNF may be a biological risk factor for suicide.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Genetics

Background:

  • Suicide is a significant public health issue with poorly understood causes.
  • Biological factors are increasingly investigated for insights into suicidal behavior.
  • Brain-derived neurotrophic factor (BDNF) plays a key role in brain function and plasticity.

Purpose of the Study:

  • To explore the role of BDNF in the biological mechanisms of suicide.
  • To review evidence linking BDNF signaling to suicidal behavior.

Main Methods:

  • Review of existing studies on BDNF in suicidal individuals.
  • Analysis of BDNF expression levels in blood and brain samples.
  • Examination of BDNF receptor activity and functional polymorphisms.

Main Results:

  • Consistent findings show reduced BDNF expression in suicidal patients and suicide victims.
  • Abnormal activity and expression of BDNF receptors (TrkB, p75NTR) are observed in post-mortem brains.
  • Strong associations exist between suicidal behavior and BDNF functional polymorphisms.

Conclusions:

  • Abnormalities in BDNF signaling are implicated as a significant biological risk factor in suicide.
  • BDNF pathway alterations contribute to the etiology and pathogenesis of suicidal behavior.
  • Further research into BDNF may offer novel therapeutic targets for suicide prevention.