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The BDNF Val66Met polymorphism has a gender specific influence on planning ability in Parkinson’s disease
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The BDNF Val66Met polymorphism has a gender specific influence on planning ability in Parkinson’s disease
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Journal Article
The BDNF Val66Met polymorphism has a gender specific influence on planning ability in Parkinson’s disease
2005
Overview
Parkinson's disease (PD) patients show a range of cognitive deficits,which may relate to abnormalities in dopaminergic transmission in fronto-striatal circuitry. In this study, we have investigated the impact of brainderived neurotrophic factor (BDNF) val66met polymorphisms on performance of the Tower of London (TOL) test of planning by PD patients. This polymorphism significantly influences BDNF secretion in the CNS, and BDNF is known to influence dopaminergic neurons and cognitive processes. Patients with PD totalling 291 who had undergone detailed motor and cognitive assessments as part of a population-based study of PD were genotyped for the BDNF val66met polymorphism. The impact of this polymorphism on cognitive ability was determined using multivariate analysis to adjust for possible confounding variables. Patients with low rates of BDNF secretion (met alleles) performed significantly better at the TOL task than those with high rates of secretion (val alleles). Furthermore, subgroup analyses revealed that the effect is most apparent in women and among patients with prior dopaminergic exposure. We speculate that BDNF may interact with dopaminergic transmission and dopamine receptor stimulation in the frontostriatal circuitry, with subsequent consequences on cognition in Parkinson's disease.
Publisher
Springer,Springer Nature B.V
Subject
/ Biological and medical sciences
/ Brain-Derived Neurotrophic Factor - genetics
/ Female
/ Genetic Predisposition to Disease
/ Genotype
/ Headache. Facial pains. Syncopes. Epilepsia. Intracranial hypertension. Brain oedema. Cerebral palsy
/ Humans
/ Male
/ Mental Processes - physiology
/ Nervous system (semeiology, syndromes)
/ Neuropsychological Tests - statistics & numerical data
/ Parkinson Disease - genetics
