title: Brain connectome modularity in weight-restored anorexia nervosa and body dysmorphic disorder.
abstract: Anorexia nervosa (AN) and body dysmorphic disorder (BDD) frequently co-occur, and have several overlapping phenomenological features. Little is known about their shared neurobiology. The aim of the study was to compare modular organization of brain structural connectivity.
  
  
  
  We acquired diffusion-weighted magnetic resonance imaging data on unmedicated individuals with BDD (n = 29), weight-restored AN (n = 24) and healthy controls (HC) (n = 31). We constructed connectivity matrices using whole-brain white matter tractography, and compared modular structures across groups.
  
  
  
  AN showed abnormal modularity involving frontal, basal ganglia and posterior cingulate nodes. There was a trend in BDD for similar abnormalities, but no significant differences compared with AN. In AN, poor insight correlated with longer path length in right caudal anterior cingulate and right posterior cingulate.
  
  
  
  Abnormal network organization patterns in AN, partially shared with BDD, may have implications for understanding integration between reward and habit/ritual formation, as well as conflict monitoring/error detection.
authors.affiliation: Department of Psychiatry,University of Illinois-Chicago,Chicago,IL,USA.
authors.forename: A
authors.initials: A
authors.lastname: Zhang
authors.affiliation: Department of Psychiatry,University of Illinois-Chicago,Chicago,IL,USA.
authors.forename: A
authors.initials: A
authors.lastname: Leow
authors.affiliation: Computer Engineering Program,University of Wisconsin-Stout,Menomonie,WI,USA.
authors.forename: L
authors.initials: L
authors.lastname: Zhan
authors.affiliation: Department of Psychiatry,University of Illinois-Chicago,Chicago,IL,USA.
authors.forename: J
authors.initials: J
authors.lastname: GadElkarim
authors.affiliation: Department of Psychiatry and Biobehavioral Sciences,University of California,Los Angeles,CA,USA.
authors.forename: T
authors.initials: T
authors.lastname: Moody
authors.affiliation: Department of Psychiatry and Biobehavioral Sciences,University of California,Los Angeles,CA,USA.
authors.forename: S
authors.initials: S
authors.lastname: Khalsa
authors.affiliation: Department of Psychiatry and Biobehavioral Sciences,University of California,Los Angeles,CA,USA.
authors.forename: M
authors.initials: M
authors.lastname: Strober
authors.affiliation: Department of Psychiatry and Biobehavioral Sciences,University of California,Los Angeles,CA,USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Feusner
mesh_terms: D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000000981:diagnostic imaging*; D001479:Basal Ganglia / Q000000981:diagnostic imaging*; D057215:Body Dysmorphic Disorders / Q000000981:diagnostic imaging*; D001835:Body Weight; D063132:Connectome; D038524:Diffusion Magnetic Resonance Imaging; D005260:Female; D006179:Gyrus Cinguli / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D017397:Prefrontal Cortex / Q000000981:diagnostic imaging*; D055815:Young Adult
keywords: Anorexia nervosa; body dysmorphic disorder; connectome; diffusion tensor imaging; graph theory; white matter