title: GATA4 variant interaction with brain limbic structure and relapse risk: A voxel-based morphometry study.
abstract: Atrial natriuretic peptide (ANP) receptors are highly expressed in the amygdala, caudate and hypothalamus. GATA4 gene encodes a transcription factor of ANP associated with the pathophysiology of alcohol dependence. We have previously demonstrated that the GATA4 single nucleotide polymorphism (SNP) rs13273672 revealed stronger alcohol-specific amygdala activation associated with lowered relapse risk to heavy drinking at 90 days in the AA-homozygotes. Our understanding however with respect to GATA4 variation on gray matter (GM) regional amygdala, caudate and hypothalamus volume is limited. We investigated GM differences specific to GATA4 and hypothesized that GM alterations will be predictive of heavy relapse. Eighty-three recently detoxified alcohol dependent patients were included. Neuroimaging data was analyzed using Voxel Based Morphometry (VBM). The main effects of GM volume and genotype as well as their interaction effect on time to heavy relapse (60 and 90 days) were analyzed using cox regression. Significant higher GM volume was found for the AA-genotype group compared with AG/GG-genotype in the hypothalamus and caudate. A significant interaction was revealed between caudate and amygdala GM volume and GATA4 genotype on time to heavy relapse. The interaction was expressed by means of higher GM in the AA genotype group to be associated with reduced risk to relapse whereas in the AG/GG group higher GM was associated with increased risk to relapse. This is the first report on GM regional volume alterations specific to GATA4 genotype [(SNP) rs13273672] and its association with relapse in alcohol dependence. Current findings further support the role of GATA4 in alcoholism.
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany. Electronic address: evangelos.zois@zi-mannheim.de.
authors.forename: Evangelos
authors.initials: E
authors.lastname: Zois
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Sabine
authors.initials: S
authors.lastname: Vollstädt-Klein
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Sabine
authors.initials: S
authors.lastname: Hoffmann
authors.affiliation: Department of Biostatistics, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Iris
authors.initials: I
authors.lastname: Reinhard
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Patrick
authors.initials: P
authors.lastname: Bach
authors.affiliation: Department of Psychiatry and Psychotherapy, Charité, University Medicine, Campus Mitte, Berlin, Germany.
authors.forename: Katrin
authors.initials: K
authors.lastname: Charlet
authors.affiliation: Department of Psychiatry and Psychotherapy, Charité, University Medicine, Campus Mitte, Berlin, Germany.
authors.forename: Anne
authors.initials: A
authors.lastname: Beck
authors.affiliation: Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim/University Heidelberg, Mannheim, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Treutlein
authors.affiliation: Department of Genetic Epidemiology in Psychiatry, Central Institute of Mental Health, Medical Faculty Mannheim/University Heidelberg, Mannheim, Germany.
authors.forename: Josef
authors.initials: J
authors.lastname: Frank
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Anne
authors.initials: A
authors.lastname: Jorde
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Martina
authors.initials: M
authors.lastname: Kirsch
authors.affiliation: Institute of Human Genetics, University of Bonn, Bonn, Germany.
authors.forename: Franziska
authors.initials: F
authors.lastname: Degenhardt
authors.affiliation: Department of Psychiatry and Psychotherapy, Charité, University Medicine, Campus Mitte, Berlin, Germany.
authors.forename: Henrik
authors.initials: H
authors.lastname: Walter
authors.affiliation: Department of Psychiatry and Psychotherapy, Charité, University Medicine, Campus Mitte, Berlin, Germany.
authors.forename: Andreas
authors.initials: A
authors.lastname: Heinz
authors.affiliation: Department of Addictive Behavior and Addiction Medicine, Central Institute of Mental Health, Medical Faculty Mannheim/Heidelberg University, Mannheim, Germany.
authors.forename: Falk
authors.initials: F
authors.lastname: Kiefer
mesh_terms: D000328:Adult; D000437:Alcoholism / Q000000981:diagnostic imaging* / Q000235:genetics*; D005260:Female; D050991:GATA4 Transcription Factor / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D066128:Gray Matter / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008032:Limbic System / Q000000981:diagnostic imaging*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D020641:Polymorphism, Single Nucleotide; D016016:Proportional Hazards Models; D012008:Recurrence; D013997:Time Factors
chemical_list: D050991:GATA4 Transcription Factor; C484170:GATA4 protein, human
keywords: Alcohol dependence; Amygdala; Caudate; GATA4; Imaging genetics; VBM