Antineuronal antibodies in patients with neuroblastoma and paraneoplastic opsoclonus-myoclonus.
J Pediatr Hematol Oncol
; 22(4): 315-20, 2000.
Article
in En
| MEDLINE
| ID: mdl-10959901
ABSTRACT
PURPOSE:
To identify serologic markers in children with paraneoplastic opsoclonus-myoclonus (POM). MATERIALS ANDMETHODS:
We examined the sera of 64 children with neuroblastoma (16 with POM and 48 age-matched and stage-matched controls) by immunohistochemistry of rat brain and human cerebellum, and by Western blot analysis of protein extracts from human Purkinje cells, cortical neurons, neuroblastoma cell lines, and HuD.RESULTS:
Using immunohistochemistry, IgG reactivity against neurons was identified in 13 of 16 POM sera (81%), and 12 of 48 non-POM sera (25%; P<0.001). IgM antineural antibodies were present in 3 of 16 POM sera (19%) and 11 of 48 (23%) non-POM sera. Except for anti-Hu antibodies detected in 10 sera (4 with POM), no other specific reactivities were identified by Western blot analysis of neuronal or of neuroblastoma protein extracts.CONCLUSIONS:
We conclude that 1) patients with neuroblastoma and POM are more likely to harbor antineuronal antibodies than patients without POM; 2) no specific serologic marker of POM was identified, but the frequent presence of antineuronal antibodies suggests that POM is immune-mediated; and 3) anti-Hu antibodies are present in some sera from patients with neuroblastoma, irrespective of the presence of POM.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Autoantibodies
/
Paraneoplastic Syndromes, Nervous System
/
Antibodies, Neoplasm
/
Neuroblastoma
/
Neurons
Limits:
Adult
/
Animals
/
Child, preschool
/
Female
/
Humans
/
Infant
/
Male
/
Newborn
Language:
En
Journal:
J Pediatr Hematol Oncol
Year:
2000
Document type:
Article