Anti-basal ganglia antibody abnormalities in Sydenham chorea.
Anti-basal ganglia antibodies (ABGA) were measured in nine children with Sydenham chorea (SC) and compared to nine controls. Enzyme-linked immunosorbent assay (ELISA) and Western blot (WB) methods were used to detect ABGA against supernatant (S1), pellet, and synaptosomal preparations from adult and pediatric postmortem caudate, putamen, and globus pallidus. ELISA optical density (OD) values were higher in SC patients than controls across all preparations, but did not reach a level of significance. Although WB identified multiple bands in all subjects, discriminant analysis showed that the mean binding patterns of SC patients were significantly different from control, most notably in the caudate S1 fraction (Wilks' lambda=0.011, p<0.0001). Numerous antigens contributed to differences between groups; the two most defining molecular masses were at 126 and 113 kDa. In contrast to WB with discriminant analysis, ELISA measurements did not significantly differentiate between the SC group and controls.
Singer
Harvey S
HS
Department of Neurology, Johns Hopkins University School of Medicine, Jefferson Street Building 124, 600 North Wolfe Street, Baltimore, MD 21287-1000, USA. hsinger@jhmi.edu
Loiselle
Christopher R
CR
Lee
Olivia
O
Garvey
Marjorie A
MA
Grus
Franz H
FH
D000293:Adolescent; D001323:Autoantibodies / Q000097:blood / Q000276:immunology*; D020274:Autoimmune Diseases of the Nervous System / Q000097:blood / Q000276:immunology*; D001479:Basal Ganglia / Q000276:immunology* / Q000473:pathology / Q000503:physiopathology; D015153:Blotting, Western; D002648:Child; D002675:Child, Preschool; D002819:Chorea / Q000097:blood / Q000276:immunology*; D016002:Discriminant Analysis; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D006801:Humans; D008297:Male; D008970:Molecular Weight; D013574:Synaptosomes / Q000276:immunology / Q000378:metabolism
D001323:Autoantibodies