Abstract:
BACKGROUND:An autoimmune hypothesis has been suggested for a subtype of Obsessive-Compulsive Disorder (OCD) with childhood onset: obsessions, compulsions and/or tics would result from anti-streptococcal antibodies that cross-react with basal ganglia tissue based on molecular mimicry. Consistent with this hypothesis anti-brain antibodies were detected in sera of children with OCD and/or Tourette's syndrome. In the present study, we tested whether adults with OCD have anti-brain antibodies or other antibodies that serve as markers of autoimmunity. METHODS:Seventy-four DSM-IV OCD (YBOCS> or =16) subjects were recruited and compared to 44 controls with a current Major Depressive Episode for neurological symptoms, ALSO titres, anti-tissue and anti-thyroid antibodies. Anti-brain antibodies were tested by immunohistochemistry and Western blotting methods. RESULTS:The proportion of subjects with tic comorbidity or positive ASLO titre (>200 IU/ml) was significantly greater in OCD than in MDE patients (21.6 vs. 2.3% and 16.3 vs. 2.3%, respectively). No other differences in antibody parameters were found. 4/74 OCD patients (5.4%) and none of the controls resulted positive for anti-brain antibodies, with a band around 50-60 kDa at the Western blot analysis. LIMITATIONS:The methodology used to assess anti-brain antibodies. CONCLUSIONS:The majority of adult OCD patients do not seem to have autoimmunity disturbances as compared to a control group. However, a greater percentage of subjects with positive ASLO titres were found among OCD patients. For a small proportion of OCD patients, moreover, autoimmune reactions towards neuronal structures are present although further investigations are needed to demonstrate its etiopathogenetic relevance.
journal_name
J Affect Disordjournal_title
Journal of affective disordersauthors
Maina G,Albert U,Bogetto F,Borghese C,Berro AC,Mutani R,Rossi F,Vigliani MCdoi
10.1016/j.jad.2008.11.019subject
Has Abstractpub_date
2009-08-01 00:00:00pages
192-200issue
3eissn
0165-0327issn
1573-2517pii
S0165-0327(08)00471-0journal_volume
116pub_type
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