title: HMPAO SPET does not distinguish obsessive-compulsive and tic syndromes in families multiply affected with Gilles de la Tourette's syndrome.
abstract: BACKGROUND
  Gilles de la Tourette's syndrome (GTS) is a familial neuropsychiatric disorder characterized by tics and obsessive-compulsive behaviours (OCB). Previous HMPAO SPET studies of subjects with GTS have shown hypoperfusion of striatal and frontal areas. Studies of patients with primary obsessive-compulsive disorder have shown, in contrast, hyperperfusion of similar areas.
  
  
  METHODS
  Twenty subjects from five families affected by GTS, including individuals with OCB but no tics, were examined using HMPAO SPET.
  
  
  RESULTS
  There were abnormalities of regional cerebral perfusion in individuals with GTS, OCB and tics. Hypoperfusion was in striatal, frontal and temporal areas. There was no hyperperfusion.
  
  
  CONCLUSIONS
  Regional cerebral blood flow patterns in individuals with OCB in families affected by GTS are comparable to their relatives with GTS and differ from individuals with primary OCD in the absence of a family history of tic disorders.
authors.affiliation: Raymond-Way Neuropsychiatry Research Group, Institute of Neurology, University College London Medical School.
authors.forename: J
authors.initials: J
authors.lastname: Moriarty
authors.forename: V
authors.initials: V
authors.lastname: Eapen
authors.forename: D C
authors.initials: DC
authors.lastname: Costa
authors.forename: S
authors.initials: S
authors.lastname: Gacinovic
authors.forename: M
authors.initials: M
authors.lastname: Trimble
authors.forename: P J
authors.initials: PJ
authors.lastname: Ell
authors.forename: M M
authors.initials: MM
authors.lastname: Robertson
mesh_terms: D000293:Adolescent; D000328:Adult; D002560:Cerebrovascular Circulation / Q000502:physiology*; D002648:Child; D003192:Compulsive Behavior / Q000000981:diagnostic imaging / Q000503:physiopathology*; D003342:Corpus Striatum / Q000000981:diagnostic imaging / Q000503:physiopathology; D005192:Family Health; D005260:Female; D005625:Frontal Lobe / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009770:Obsessive Behavior / Q000000981:diagnostic imaging / Q000503:physiopathology*; D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime; D013702:Temporal Lobe / Q000000981:diagnostic imaging / Q000503:physiopathology; D013981:Tic Disorders / Q000000981:diagnostic imaging / Q000503:physiopathology*; D015899:Tomography, Emission-Computed, Single-Photon; D005879:Tourette Syndrome / Q000000981:diagnostic imaging / Q000503:physiopathology*
chemical_list: D015609:Organotechnetium Compounds; D010091:Oximes; D019690:Technetium Tc 99m Exametazime