title: Childhood maltreatment and corpus callosum volume in recently diagnosed patients with bipolar I disorder: data from the Systematic Treatment Optimization Program for Early Mania (STOP-EM).
abstract: Childhood trauma (CT) has been associated with abnormalities in the corpus callosum (CC). Decreased CC volumes have been reported in children and adolescents with trauma as well as adults with CT compared to healthy controls. CC morphology is potentially susceptible to the effects of Bipolar Disorder (BD) itself. Therefore, we evaluated the relationship between CT and CC morphology in BD. We using magnetic resonance imaging in 53 adults with BD recently recovered from their first manic episode, with (n = 23) and without (n = 30) CT, defined using the Childhood Trauma Questionnaire (CTQ) and 16 healthy controls without trauma. ANCOVA was performed with age, gender and intracranial volume as covariates in order to evaluate group differences in CC volume. The total CC volume was found to be smaller in BD patients with trauma compared to BD patients without trauma (p < .05). The differences were more pronounced in the anterior region of the CC. There was a significant negative correlation between CTQ scores and total CC volume in BD patients with trauma (p = .01). We did not find significant differences in the CC volume of patients with/without trauma compared to the healthy subjects. Our sample consists of patients recovered from a first episode of mania and are early in the course of illness and reductions in CC volume may occur late in the course of BD. It might mean there may be two sources of CC volume reduction in these patients: the reduction due to trauma, and the further reduction due to the illness.
authors.affiliation: Department of Psychiatry, University of British Columbia, Vancouver, Canada; Bipolar Disorder Program and Laboratory of Molecular Psychiatry, National Institute for Translational Medicine, INCT-TM, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
authors.forename: J
authors.initials: J
authors.lastname: Bücker
authors.forename: K
authors.initials: K
authors.lastname: Muralidharan
authors.forename: I J
authors.initials: IJ
authors.lastname: Torres
authors.forename: W
authors.initials: W
authors.lastname: Su
authors.forename: J
authors.initials: J
authors.lastname: Kozicky
authors.forename: L E
authors.initials: LE
authors.lastname: Silveira
authors.forename: D J
authors.initials: DJ
authors.lastname: Bond
authors.forename: W G
authors.initials: WG
authors.lastname: Honer
authors.forename: M
authors.initials: M
authors.lastname: Kauer-Sant'anna
authors.forename: R W
authors.initials: RW
authors.lastname: Lam
authors.forename: L N
authors.initials: LN
authors.lastname: Yatham
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001714:Bipolar Disorder / Q000209:etiology* / Q000473:pathology*; D016022:Case-Control Studies; D002648:Child; D002649:Child Abuse / Q000523:psychology*; D003337:Corpus Callosum / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: Bipolar disorder; Childhood trauma; Corpus callosum; First episode mania; Magnetic resonance imaging