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Identification and characterization of gangliosides reacting with IgM paraproteins in three patients with neuropathy associated with biclonal gammopathy

Ilyas, A.A., Willison, H.J., Dalakas, M.C., Whitaker, J.N., and Quarles, R.H. (1988) Identification and characterization of gangliosides reacting with IgM paraproteins in three patients with neuropathy associated with biclonal gammopathy. Journal of Neurochemistry, 51 (3). pp. 851-858. ISSN 0022-3042 (doi:10.1111/j.1471-4159.1988.tb01821.x)

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Abstract

IgM monoclonal antibodies from three patients with polyneuropathy associated with biclonal gammopathy reacted with monosialoganglioside GM1 on thin-layer chromatograms. An IgM paraprotein in one of the patients with a predominantly motor neuropathy also reacted strongly with the ganglioside GD1b and asialo-GM1. All three of these antigenic lipids have a Gal(beta 1-3)GalNAc moiety in common which would appear to be the antigenic determinant. However, this IgM also cross-reacted weakly with paragloboside which has an N-acetyllactosaminyl [Gal(beta 1-4)GlcNAc] terminal structure. The specificity of the other paraprotein in this patient is not known. The IgM paraproteins reacting with GM1 in both of the other patients exhibited different specificity because they did not react with GD1b and asialo-GM1, but reacted strongly with GM2 ganglioside. The data suggest that the epitope for both of these IgMs is in the GalNAc(beta 1-4)(NeuAc alpha 2-3)Gal(beta 1-4)Glc region of the gangliosides that is common to both GM2 and GM1. The second IgM paraproteins in both of these latter patients react with the myelin-associated glycoprotein (MAG) and two 3-sulfoglucuronyl glycolipids that share antigenic determinants with MAG.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s):Willison, Prof Hugh
Authors: Ilyas, A.A., Willison, H.J., Dalakas, M.C., Whitaker, J.N., and Quarles, R.H.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Journal of Neurochemistry
ISSN:0022-3042
Published Online:5 October 2006

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