Anti-alpha- and beta-tubulin IgM antibodies in dysimmune neuropathies

Emanuela Manfredini, Eduardo Nobile-Orazio, Silvia Allaria, Guglielmo Scarlato

Research output: Contribution to journalArticle

Abstract

An increased frequency of serum IgM antibodies to beta-tubulin has been found by ELISA in patients with chronic inflammatory demyelinating polyneuropathy (CIDP) and the Guillain-Barré syndrome (GBS). We used an immunoblot technique to compare the frequency, titer and specificity of anti-tubulin IgM antibodies in 207 patients with different neuropathies, 109 with other neurological disease (OND) and 110 non-neurological controls. High titers of serum anti-tubulin IgM antibodies (> 1:1600) were present in 2 patients with CIDP (10.5%), 1 with multifocal motor neuropathy (MMN) (11%), 1 with GBS (1.8%), two with IgM monoclonal gammopathy, one with (1.3%) and one without neuropathy (2.1%), and in two with OND (1.8%). Even if the relative binding to alpha- and beta-tubulin differed among positive patients, in all IgM bound to both tubulin subunits. All positive patients had a similarly intense IgM reactivity with tubulin by ELISA that showed high anti-tubulin IgM in 4 additional CIDP patients (total positive by ELISA 30%) and in 7 of 23 normal subjects (30%). Even if high anti-tubulin IgM were slightly more frequent by immunoblot in chronic dysimmune neuropathies than in other diseases, possibly reflecting a secondary response to neural damage during an ongoing immune response, their relatively low frequency in these diseases does not seem to justify their measurement for diagnostic application.

Original languageEnglish
Pages (from-to)79-84
Number of pages6
JournalJournal of the Neurological Sciences
Volume133
Issue number1-2
DOIs
Publication statusPublished - 1995

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Keywords

  • Autoantibodies
  • Guillain-Barré syndrome
  • IgM
  • Neuropathy
  • Tubulin

ASJC Scopus subject areas

  • Clinical Neurology
  • Neurology
  • Ageing
  • Surgery
  • Developmental Neuroscience
  • Neuroscience(all)

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