title: Effect of the BDNF V166M polymorphism on working memory in healthy adolescents.
abstract: Brain-derived neurotrophic factor (BDNF) may play a role in modulating memory function and there is growing evidence that the BDNF V166M polymorphism may influence episodic memory in humans. However, previous association studies examining this polymorphism and working memory are inconsistent. The current study examined this association in a large sample of adolescent twin-pairs and siblings (785 individuals from 439 families). A range of measures (event-related potential, general performance and reaction time) was obtained from a delayed-response working-memory task and total association was examined using the quantitative transmission disequilibrium tests (QTDT) program. Analyses had approximately 93-97% power (alpha= 0.05) to detect an association accounting for as little as 2% of the variance in the phenotypes examined. Results indicated that the BDNF V166M polymorphism is not associated with variation in working memory in healthy adolescents.
authors.affiliation: Genetic Epidemiology, Queensland Institute of Medical Research, University of Queensland, Brisbane, Australia. Narelle.Hansell@qimr.edu.au
authors.forename: N K
authors.initials: NK
authors.lastname: Hansell
authors.forename: M R
authors.initials: MR
authors.lastname: James
authors.forename: D L
authors.initials: DL
authors.lastname: Duffy
authors.forename: A J
authors.initials: AJ
authors.lastname: Birley
authors.forename: M
authors.initials: M
authors.lastname: Luciano
authors.forename: G M
authors.initials: GM
authors.lastname: Geffen
authors.forename: M J
authors.initials: MJ
authors.lastname: Wright
authors.forename: G W
authors.initials: GW
authors.lastname: Montgomery
authors.forename: N G
authors.initials: NG
authors.lastname: Martin
mesh_terms: D000293:Adolescent; D000328:Adult; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics* / Q000378:metabolism; D016009:Chi-Square Distribution; D018913:Event-Related Potentials, P300 / Q000235:genetics* / Q000502:physiology; D005260:Female; D006801:Humans; D015810:Linkage Disequilibrium; D008570:Memory, Short-Term / Q000502:physiology*; D020641:Polymorphism, Single Nucleotide; D011930:Reaction Time / Q000235:genetics* / Q000502:physiology; D012016:Reference Values; D035781:Siblings; D018709:Statistics, Nonparametric; D014429:Twins, Dizygotic / Q000235:genetics / Q000378:metabolism
chemical_list: D019208:Brain-Derived Neurotrophic Factor