title: The Val66Met polymorphism of the brain-derived neurotrophic factor gene is associated with psychotic feature and suicidal behavior in Japanese major depressive patients.
abstract: Recent researches have suggested that brain-derived neurotrophic factor (BDNF) may be implicated in the pathophysiology of mood disorder. This study examined the association between the BDNF Val66Met polymorphism and major depressive disorder (MDD) in a Japanese population. We genotyped the BDNF Val66Met polymorphism in 154 major depressive patients and 154 age- and sex-matched control subjects. The genotypic distributions and allele frequencies were similar among the patients and control subjects. When the relationships of the polymorphism with several clinical variables (i.e., age, sex, age of onset, number of episode, presence of psychotic features, suicidal behavior, and family history) were examined, the dose of Met allele had significant effects on psychotic feature and suicidal behavior and family history. These results suggest that the BDNF Val66Met polymorphism is not related to the development of MDD but related to clinical features of MDD in a Japanese population.
authors.affiliation: Department of Psychiatry, Course of Integrated Brain Sciences, Medical Informatics, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Iga
authors.forename: Shu-ichi
authors.initials: S
authors.lastname: Ueno
authors.forename: Ken
authors.initials: K
authors.lastname: Yamauchi
authors.forename: Shusuke
authors.initials: S
authors.lastname: Numata
authors.forename: Sumiko
authors.initials: S
authors.lastname: Tayoshi-Shibuya
authors.forename: Sawako
authors.initials: S
authors.lastname: Kinouchi
authors.forename: Masahito
authors.initials: M
authors.lastname: Nakataki
authors.forename: Hongwei
authors.initials: H
authors.lastname: Song
authors.forename: Kazuhiko
authors.initials: K
authors.lastname: Hokoishi
authors.forename: Hirotaka
authors.initials: H
authors.lastname: Tanabe
authors.forename: Akira
authors.initials: A
authors.lastname: Sano
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Ohmori
mesh_terms: D000328:Adult; D017677:Age Distribution; D017668:Age of Onset; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics*; D016022:Case-Control Studies; D003865:Major Depressive Disorder / Q000150:complications / Q000235:genetics* / Q000523:psychology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008297:Male; D008715:Methionine / Q000235:genetics; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011618:Psychotic Disorders / Q000235:genetics* / Q000523:psychology; D017678:Sex Distribution; D013405:Suicide; D014633:Valine / Q000235:genetics
chemical_list: D019208:Brain-Derived Neurotrophic Factor; D008715:Methionine; D014633:Valine