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Antineuronal antibodies in movement disorders

L S Kiessling1, A C Marcotte, L Culpepper

  • 1Department of Pediatrics, Brown University School of Medicine, RI.

Pediatrics
|July 1, 1993
PubMed
Summary

Children with movement disorders like Tourette syndrome may have antibodies linked to streptococcal infections. This study found antineuronal antibodies in children with tics and chorea, suggesting a potential autoimmune connection.

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Area of Science:

  • Neuroscience
  • Immunology
  • Pediatrics

Background:

  • Childhood movement disorders, including Tourette syndrome, tics, and chorea, can be debilitating.
  • Previous research has suggested a link between Sydenham's chorea and autoimmune responses.
  • The role of antibodies in other childhood movement disorders remains an area of investigation.

Purpose of the Study:

  • To investigate the presence of serum antibodies against the central nervous system in children with recent-onset movement disorders.
  • To determine if these antibodies are associated with conditions such as Tourette syndrome, tics, and chorea.
  • To explore potential links between streptococcal infections and these antibodies.

Main Methods:

  • Serum samples from children with and without movement disorders were analyzed using immunofluorescent staining.
  • A blinded design was employed to assess antibodies against human caudate nucleus sections.
  • The study involved an initial sample of 50 children and a replication sample of 33 children.

Main Results:

  • Children with movement disorders were significantly more likely to have antineuronal antibodies compared to those without (Odds Ratio 5.50).
  • The prevalence of positive antineuronal antibodies in children with movement disorders (44%) was similar to that found in Sydenham's chorea.
  • Children with movement disorders also showed a higher likelihood of elevated antistreptococcal titers.

Conclusions:

  • The findings strongly suggest an association between group A beta-hemolytic streptococcal infections and the presence of serum antineuronal antibodies.
  • These antibodies may play a role in the pathogenesis of childhood movement disorders.
  • Further research is warranted to elucidate the autoimmune mechanisms underlying these conditions.

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