Immunological mechanisms that associate with oligoclonal IgM band synthesis in multiple sclerosis

Clinical Immunology : the Official Journal of the Clinical Immunology Society
Luisa M VillarJosé C Alvarez-Cermeño

Abstract

We described previously that multiple sclerosis (MS) patients with oligoclonal IgM against myelin lipids (M+) develop an aggressive disease. Our aim was to assess possible mechanisms regulating the production of these antibodies. We studied B cell subsets in 180 patients with MS, and 69 with other neurological diseases. M+ MS patients showed a moderate increase of CD5(+) B-cell percentage in peripheral blood and a considerable augment of these cells in cerebrospinal fluid (CSF) that correlated with intrathecal IgM production. The appearance of CD5(+) B cells into the central nervous system (CNS) was related to increased CXCL13 and TNF-alpha levels in CSF. Moreover, the presence of oligoclonal IgM associated with a SNP at position -376 of the TNF-alpha promoter. These results help to elucidate the B lymphocytes responsible for intrathecal IgM secretion in MS and the origin of this abnormal B-cell response in patients with aggressive MS.

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Citations

Jul 26, 2014·Brain : a Journal of Neurology·Eduardo BeltránKlaus Dornmair
Aug 12, 2014·Autoimmunity Reviews·Judith FraussenVeerle Somers
Sep 17, 2013·Leukemia & Lymphoma·Luz María Torres-EspíndolaManuel de Jesús Castillejos-López
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