MK4MDD

Study Report

Reference
CitationRibeiro L, 2007 PubMed
Full InfoRibeiro L, Busnello JV, Cantor RM, Whelan F, Whittaker P, Deloukas P et al. The brain-derived neurotrophic factor rs6265 (Val66Met) polymorphism and depression in Mexican-Americans. Neuroreport 2007; 18(12): 1291-1293.

Study
Hypothesis or Background The hypothesis that brain-derived neurotrophic factor (BDNF) is involved in the pathogenesis of major depression is supported by several research findings; however, genetic studies assessing the relationship between BDNF and psychiatric disorders have produced conflicting results.
Sample Information284 depressed participants and 331 controls
Method Detailgenotyping
Method Keywordsgenotyping
ResultWe examined the effect of a BDNF polymorphism on depression susceptibility in Mexican-Americans. The single nucleotide polymorphism (Val66Met), which has been shown to have functional and behavioral effects, was genotyped in 284 depressed participants and 331 controls, showing association with depression (P=0.005). Individuals homozygous for the major allele (GG) had an increased chance of being depressed (OR=1.7 95% CI 1.17-2.47).
ConclusionsOur findings support the association of BDNF single nucleotide polymorphism rs6265 and depression, suggesting that this polymorphism may increase susceptibility to major depression in Mexican-Americans.

Relationships reported by Ribeiro L, 2007