title: Differences of cortical 5-HT2A receptor binding index with SPECT in subtypes of anorexia nervosa: relationship with personality traits?
abstract: OBJECTIVE
  Using single photon emission computed tomography and the 5-HT2A receptor antagonist, 123I-5-I-R91150, we explored differences in 5-HT2A binding index in anorexia nervosa patients with and without bulimic features. We also searched for associations between temperament dimensions and cortical 5-HT2) binding.
  
  
  METHODS
  About 9 restrictive and 7 bulimic anorexia nervosa patients were examined and cortical 123I-5-I-R91150 binding index values were compared between the two subgroups. Open explorative correlation analysis was used to examine any relationships between binding index values and temperament scores, as assessed with the Temperament and Character Inventory.
  
  
  RESULTS
  5-HT2A binding index was significantly reduced in the parietal cortex in bulimic anorexia nervosa patients in comparison with restrictive anorectics. Further, a positive correlation was documented between reward dependence and parietal 5-HT2A binding index across patients in the two subgroups.
  
  
  CONCLUSIONS
  Restrictive anorexia nervosa patients differ from binging/purging anorexia nervosa patients on the basis of a reduced parietal 5-HT2A binding index in the latter. We speculate that the finding of a positive correlation between parietal 5-HT2A binding and reward dependence might reflect an association between these two variables, at least in anorexia nervosa patients.
authors.affiliation: Division of Nuclear Medicine, Ghent University Hospital, De Pintelaan, 185, B-9000 Ghent, Belgium. ingeborg@goethals@ugent.be
authors.forename: Ingeborg
authors.initials: I
authors.lastname: Goethals
authors.forename: Myriam
authors.initials: M
authors.lastname: Vervaet
authors.forename: Kurt
authors.initials: K
authors.lastname: Audenaert
authors.forename: Filip
authors.initials: F
authors.lastname: Jacobs
authors.forename: Hamphrey
authors.initials: H
authors.lastname: Ham
authors.forename: Christophe
authors.initials: C
authors.lastname: Van de Wiele
authors.forename: Marleen
authors.initials: M
authors.lastname: Vandecapelle
authors.forename: Guido
authors.initials: G
authors.lastname: Slegers
authors.forename: Rudi
authors.initials: R
authors.lastname: Dierckx
authors.forename: Cees
authors.initials: C
authors.lastname: van Heeringen
mesh_terms: D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000175:diagnosis* / Q000378:metabolism* / Q000523:psychology; D001665:Binding Sites; D002540:Cerebral Cortex / Q000378:metabolism*; D002605:Character; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D044402:Receptor, Serotonin, 5-HT2A / Q000378:metabolism*; D011795:Surveys and Questionnaires; D013694:Temperament; D015899:Tomography, Emission-Computed, Single-Photon
chemical_list: D044402:Receptor, Serotonin, 5-HT2A