title: Family-based association study between brain-derived neurotrophic factor gene and major depressive disorder of Chinese descent.
abstract: The genetic pathogenesis of major depressive disorder (MDD) has not been elucidated. It has been proposed that brain-derived neurotrophic factor (BDNF), as a member of the neurotrophin family, may be involved in the etiology and antidepressant response of MDD. The present study investigated the possible presence of an association between the BDNF gene and MDD. Single-marker transmission disequilibrium test (TDT), pairwise-SNP linkage disequilibrium (LD) and haplotype-based TDT analyses were performed on single nucleotide polymorphisms (SNPs) rs6265, rs10835210 and rs2030324 in 105 Chinese trios. No significant associations with MDD were demonstrated for three SNPs. Pairwise LD analysis revealed substantial LD among three SNPs. Multiple-marker TDT analysis indicated that there was no association between the haplotypes from rs6265-rs10835210-rs2030324 and MDD. The statistical power of the present study was calculated so we had an idea what kind of effects could be identified. We conclude that SNPs rs6265, rs10835210 and rs2030324 of the BDNF gene are unlikely to play a critical role in the pathogenesis of MDD.
authors.affiliation: Department of Psychiatry, Shanghai Mental Health Center, Shanghai 200030, China.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Liu
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Xu
authors.forename: Sanduo
authors.initials: S
authors.lastname: Jiang
authors.forename: Donghong
authors.initials: D
authors.lastname: Cui
authors.forename: Yiping
authors.initials: Y
authors.lastname: Qian
authors.forename: Kaida
authors.initials: K
authors.lastname: Jiang
mesh_terms: D000328:Adult; D044466:Asian People / Q000208:ethnology; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics*; D003865:Major Depressive Disorder / Q000235:genetics*; D005192:Family Health; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D015810:Linkage Disequilibrium; D008297:Male; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide / Q000235:genetics*; D055815:Young Adult
chemical_list: D019208:Brain-Derived Neurotrophic Factor