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Related Experiment Video

Updated: Mar 20, 2026

Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients
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BDNF Genotype Interacts with Motor Function to Influence Rehabilitation Responsiveness Poststroke.

Christine T Shiner1, Kerrie D Pierce2, Angelica G Thompson-Butel1

  • 1Neuroscience Research Australia, Sydney, NSW, Australia; School of Medical Sciences, University of New South Wales, Sydney, NSW, Australia.

Frontiers in Neurology
|June 1, 2016
PubMed
Summary
This summary is machine-generated.

Genetic factors like BDNF influence stroke rehabilitation outcomes. The BDNF Val66Met polymorphism may reduce motor gains in stroke patients with moderate to high function, but not low function.

Keywords:
apolipoprotein Ebrain-derived neurotrophic factormotor rehabilitationstroke geneticsupper limb

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Area of Science:

  • Neuroscience
  • Genetics
  • Rehabilitation Medicine

Background:

  • Persistent motor impairment after stroke is highly variable.
  • Genetic factors, such as brain-derived neurotrophic factor (BDNF) and apolipoprotein E (APOE) gene polymorphisms, may influence neuroplasticity and rehabilitation response.
  • Understanding these genetic influences is crucial for personalized stroke recovery strategies.

Purpose of the Study:

  • To investigate the impact of BDNF and APOE genotypes on motor improvement in patients undergoing upper-limb stroke rehabilitation.
  • To determine if specific genetic variations affect the efficacy of different rehabilitation approaches.

Main Methods:

  • Genotyping for BDNF-Val66Met and APOE isoforms was performed on DNA from 55 chronic stroke patients.
  • Patients participated in either Wii-based Movement Therapy or Constraint-induced Movement Therapy.
  • Upper-limb motor function was assessed before and after the rehabilitation intervention.

Main Results:

  • All patients showed motor function improvement post-therapy, irrespective of the therapy type.
  • No significant main effect of BDNF or APOE genotype on baseline or post-therapy motor function was observed.
  • A significant interaction revealed that BDNF Val66Met polymorphism carriers with moderate to high residual motor function experienced less improvement compared to those with low motor function.

Conclusions:

  • The BDNF-Val66Met polymorphism interacts with baseline motor function to modulate rehabilitation outcomes in chronic stroke patients.
  • This genetic variation may reduce the magnitude of motor gains, particularly in individuals with higher residual motor function.
  • Considering BDNF genotype in clinical trial design and interpretation is recommended for stroke rehabilitation research.