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Arq Neuropsiquiatr. 2003 Dec;61(4):968-73. Epub 2004 Jan 6.

[Determination of autoantibody for myelin antigens in the serum of patients HLA-DQB1*0602 with multiple sclerosis].

[Article in Portuguese]

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Departamento de Biologia Celular & Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro RJ-Brasil.


Multiple sclerosis (MS) is a chronic inflammatory demyelinating disease of the human central nervous system (CNS) mediated by autoimmune Th1 lymphocytes. We determined the serum levels of autoantibodies for myelin basic protein (MBP), proteolipid (PLP) and myelin oligodendrocyte glycoprotein sequence MOG 92-106 in a group of 54 healthy individuals and 26 MS patients expressing or not HLA-DQB1*0602. Regardless expression of the susceptibility allele DQB1*0602, MS patients presented marked (p<0.0001) IgG antibody production for MBP and MOG92-106. Yet, significant (p<0.0001) IgA antibody levels were mainly observed for PLP and MOG antigens. Our results suggest that other HLA class II alleles may be conferring susceptibility to MS in this population and influencing the pattern of immune recognition of encephalitogen antigens. Furthermore, distinct IgG and/or IgA autoantibody production may be contributing to the control or maintenance of the CNS inflammatory reaction.

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