title: The role of genetic variation of BDNF gene in antidepressant-induced mania in bipolar disorder.
abstract: The occurrence of mania during antidepressant treatment is a key issue in the clinical management of bipolar disorder (BD). Brain-derived neurotrophic factor (BDNF) has been implicated in the pathogenesis of mood disorders. Moreover, antidepressants increase the expression of BDNF and its overactivity may be involved in the mechanism of development of the manic state. The aim of the present study was to test the influence of BDNF gene alterations in antidepressant-induced mania in bipolar patients. A case-control study was performed to analyse genotype and allele frequencies for the BDNF polymorphisms between two groups [37 patients with antidepressant-induced mania (AIM+) and 55 patients without antidepressant-induced mania (AIM-)]. No significant differences were found between AIM+ and AIM- groups. Our results did not support the BDNF gene link to antidepressant-induced mania, like a previous study with a smaller sample has already suggested.
authors.affiliation: Neuroscience Program, Institute of Biological Sciences, Federal University of Minas Gerais (ICB-UFMG), Belo Horizonte, Brazil.
authors.forename: Alexandre
authors.initials: A
authors.lastname: de Aguiar Ferreira
authors.forename: Fernando Silva
authors.initials: FS
authors.lastname: Neves
authors.forename: Guilherme José Garcia Santos
authors.initials: GJ
authors.lastname: Pimenta
authors.forename: Marina Pena
authors.initials: MP
authors.lastname: Mello
authors.forename: Débora Marques
authors.initials: DM
authors.lastname: Miranda
authors.forename: Marco Aurélio
authors.initials: MA
authors.lastname: Romano-Silva
authors.forename: Luiz Armando
authors.initials: LA
authors.lastname: De Marco
authors.forename: Humberto
authors.initials: H
authors.lastname: Corrêa
mesh_terms: D000928:Antidepressive Agents / Q000009:adverse effects*; D001714:Bipolar Disorder / Q000139:chemically induced* / Q000188:drug therapy / Q000235:genetics*; D019208:Brain-Derived Neurotrophic Factor / Q000235:genetics*; D016022:Case-Control Studies; D016009:Chi-Square Distribution; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008297:Male; D011110:Polymorphism, Genetic / Q000235:genetics*
chemical_list: D000928:Antidepressive Agents; D019208:Brain-Derived Neurotrophic Factor