The B-cells that express anti-MAG antibodies in neuropathy and non-malignant IgM monoclonal gammopathy belong to the CD5 subpopulation Academic Article Article uri icon


MeSH Major

  • Antibodies, Anti-Idiotypic
  • Gangliosides
  • Immunoglobulin M
  • Myelin-Associated Glycoprotein


  • B-cells that express monoclonal IgM anti-MAG antibodies (M-protein) in a patient with neuropathy and non-malignant IgM monoclonal gammopathy were studied by flow cytometry to determine if they bear the CD5 cell surface antigen. The CD5+ antigen is expressed on a subpopulation of B-cells which has been implicated in the secretion of autoantibodies and development of B-cell chronic lymphocytic leukemia (B-CLL). The monoclonal anti-MAG antibodies secreting B-cells were identified by a mouse monoclonal antibody to M-protein idiotype. Cytofluorometric analysis revealed that approximately 62% of the idiotype-positive B-lymphocytes expressed the CD5 antigen. The result of this study indicate that monoclonal anti-MAG antibodies may be secreted by CD5+ B-cells, and that B-cells in some cases of non-malignant IgM monoclonal gammopathy may be phenotypically similar to B-CLL cells.

publication date

  • January 1991



  • Academic Article


Digital Object Identifier (DOI)

  • 10.1016/0165-5728(91)90090-T

PubMed ID

  • 1701449

Additional Document Info

start page

  • 83

end page

  • 8


  • 31


  • 1