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The role of BDNF genetic polymorphisms in bipolar disorder with psychiatric comorbidities.
J Affect Disord ; 131(1-3): 307-11, 2011 Jun.
Article em En | MEDLINE | ID: mdl-21167606
BACKGROUND: Bipolar disorder (BD) is a complex disorder where genetic factors play a major role in its etiology. Probably, no other axis I diagnosis has a co-morbidity prevalence as high as BD. Since BDNF is involved in different ways in various psychiatric disorders we hypothesized that its genetic polymorphisms could be associated with the co-morbidity phenomenon in BD. METHODS: We studied 320 subjects (160 BD patients and 160 healthy controls). Genotyping was performed using made-to-order TaqMan genotyping assays (rs4923463, rs6265, rs2049045, and rs7103411). Statistical analyses were performed using UNPHASED version 3.0.12 and Haploview 4.1. RESULTS: No genotypic, allelic or haplotype differences were found between bipolar patients and healthy controls. Concerning exclusively the rs4923463 (G/G) there was a significant association with alcoholism (p=0.009), smoking (p=0.006) and violent suicide attempt (p=0.03). We further found that the G-G haplotype (rs4923463-rs2049045) (adjusted p=0.029) and the G-T haplotype (rs4923463-rs7103411) (adjusted p=0.029) were significantly more frequent in the group with alcoholism co-morbidity when compared with the group without this co-morbidity. LIMITATIONS: Sample size and retrospective assessment of suicide behavior and psychiatric comorbidities. CONCLUSIONS: The results obtained in our study indicate that BDNF variants may confer susceptibility to additional psychiatric diagnosis in BD.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Transtorno Bipolar / Fator Neurotrófico Derivado do Encéfalo / Polimorfismo de Nucleotídeo Único / Transtornos Mentais Tipo de estudo: Diagnostic_studies / Prognostic_studies / Risk_factors_studies Limite: Female / Humans / Male Idioma: En Revista: J Affect Disord Ano de publicação: 2011 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Transtorno Bipolar / Fator Neurotrófico Derivado do Encéfalo / Polimorfismo de Nucleotídeo Único / Transtornos Mentais Tipo de estudo: Diagnostic_studies / Prognostic_studies / Risk_factors_studies Limite: Female / Humans / Male Idioma: En Revista: J Affect Disord Ano de publicação: 2011 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda