title: [Determination of autoantibody for myelin antigens in the serum of patients HLA-DQB1*0602 with multiple sclerosis].
abstract: 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.
authors.affiliation: Departamento de Biologia Celular & Molecular, Instituto de Biologia, Universidade Federal Fluminense, Niterói, Rio de Janeiro RJ-Brasil.
authors.forename: Adriana
authors.initials: A
authors.lastname: Carvalho
authors.forename: Gabriele
authors.initials: G
authors.lastname: Sant'anna
authors.forename: Cláudio Cirne
authors.initials: CC
authors.lastname: Santos
authors.forename: Izabel Palmer
authors.initials: IP
authors.lastname: Frugulhetti
authors.forename: Soniza Alves
authors.initials: SA
authors.lastname: Leon
authors.forename: Thereza
authors.initials: T
authors.lastname: Quírico-Santos
mesh_terms: D000293:Adolescent; D000328:Adult; D000483:Alleles; D001323:Autoantibodies / Q000097:blood*; D016022:Case-Control Studies; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006683:HLA-DQ Antigens / Q000235:genetics*; D059866:HLA-DQ beta-Chains; D006801:Humans; D007070:Immunoglobulin A / Q000097:blood*; D007074:Immunoglobulin G / Q000097:blood*; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics*; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000235:genetics / Q000276:immunology*; D004676:Myelin Basic Protein / Q000276:immunology*
chemical_list: D001323:Autoantibodies; D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D008562:Membrane Glycoproteins; D004676:Myelin Basic Protein