Brain-derived neurotrophic factor gene polymorphism differentially affects speech and language performance and...

Area of Science:

• Neuroscience
• Genetics
• Rehabilitation Medicine

Background:

• Stroke is a leading cause of long-term disability, affecting speech and language functions.
• Genetic factors influencing stroke recovery, particularly speech and language, are not well understood.
• Brain-derived neurotrophic factor (BDNF) plays a role in stroke recovery, with a specific single nucleotide polymorphism (SNP) affecting its function.

Purpose of the Study:

• To investigate the association between BDNF gene polymorphism and speech/language performance post-stroke.
• To evaluate the influence of BDNF genotype on response to speech and language rehabilitation.

Main Methods:

• Recruitment of stroke patients with speech and language deficits.
• Baseline speech and language assessment followed by a rehabilitation program.
• BDNF genotyping through blood sample analysis.

Main Results:

• The metBDNF genotype was present in 37.5% of the 32 participants.
• Patients with the metBDNF genotype exhibited significantly lower baseline speech performance (p=0.022).
• The metBDNF genotype was associated with a reduced response to speech rehabilitation (p=0.032) and predicted baseline performance.

Conclusions:

• The BDNF genotype differentially affects speech performance and recovery following a stroke.
• This genetic variation may influence the efficacy of speech and language rehabilitation strategies.