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, 276 (1-2), 207-12

Autoantibodies to neurofascin-186 and Gliomedin in Multifocal Motor Neuropathy

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Autoantibodies to neurofascin-186 and Gliomedin in Multifocal Motor Neuropathy

Francesca Notturno et al. J Neuroimmunol.

Abstract

We tested autoantibodies to neurofascin-186 (NF186) and gliomedin in sera from patients with multifocal motor neuropathy (MMN, n=53) and chronic inflammatory demyelinating polyneuropathy (CIDP, n=95) by ELISA. IgG antibodies to NF186 or gliomedin were found in 62% of MMN and 1% of CIDP sera, and IgM antibodies to the same antigens in 12% of MMN and 1% of CIDP sera. These autoantibodies activated complement. Ten percent of the MMN sera without IgM anti-GM1 reactivity had anti-NF186 antibodies. Because NF186 and gliomedin play a crucial role for salutatory conduction, the autoantibodies may contribute to produce motor nerve conduction block and muscle weakness in MMN.

Keywords: Chronic inflammatory demyelinating neuropathy; Gliomedin; Multifocal motor neuropathy; Neurofascin.

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