Anti-MAG IgM antibodies were detected by ELISA in a patient with slowly progressive peripheral neuropathy. Serum IgM content was normal, and no M-protein was detected by serum protein electrophoresis, immunoelectrophoresis, or immunostaining. By immunoblot analysis, the anti-MAG antibodies were IgMk; they reacted with human and bovine MAG but not with mouse MAG. The data suggest that there was an anti-MAG IgM M-protein in concentration too low to be detected by conventional techniques. Tests for anti-MAG antibodies should be done in patients with slowly progressive neuropathy of unknown etiology, even in the absence of detectable serum M-protein.
|Titolo:||Neuropathy and anti-MAG antibodies without detectable serum M-protein|
NOBILE-ORAZIO, EDUARDO (Primo)
|Parole Chiave:||Blood Proteins; Myelin-Associated Glycoprotein; Myelin Proteins; Peripheral Nervous System Diseases; Humans; Enzyme-Linked Immunosorbent Assay; Aged; Male; Immunoglobulin M; Antibodies, Anti-Idiotypic|
|Settore Scientifico Disciplinare:||Settore MED/26 - Neurologia|
|Data di pubblicazione:||feb-1984|
|Appare nelle tipologie:||01 - Articolo su periodico|