期刊
MULTIPLE SCLEROSIS JOURNAL
卷 17, 期 3, 页码 327-334出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1352458510388543
关键词
cerebrospinal fluid; children; IgM; multiple sclerosis
资金
- Hertiestiftung [GHS 191/00]
Background: Intrathecal IgM synthesis is reported to be associated with a worse prognosis in adults with multiple sclerosis (MS). Objective: To study the predictive value of intrathecal IgM synthesis for the clinical course of pediatric MS. Methods: Seventy children with onset of MS before the age of 16 years and followed for a median period of 10.4 years (range: 0.4-22.8 years) were studied. The two subgroups with (n=44) or without (n=26) intrathecal IgM synthesis were distinguished by a new, very sensitive, evaluation of quantitative analysis in cerebrospinal fluid (CSF)/serum quotient diagrams (Reibergrams). The clinical course and EDSS (Expanded Disability Status Scale) scores at five and ten years were compared with IgM frequencies between both groups with a new statistics program for CSF data. Results: The cohort of children without intrathecal IgM production had higher numbers of attacks in the first two years and shorter time intervals between first and second attack, although this was not statistically significant (p=0.04, p=0.15 respectively). In addition there was also a trend for girls without intrathecal IgM synthesis to have a higher EDSS score after 10 years compared with the group with IgM synthesis. Conclusion: Intrathecal IgM synthesis is not associated with a more rapid progression of disability in pediatric MS. Reevaluation of data from previous reports about the negative predictive value of intrathecal IgM synthesis in adult MS with a CSF statistics tool show that the apparent contradiction is due to a methodological bias in the qualitative detection of 'oligoclonal' IgM or linear IgM index.
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