Autoantibody specific for a thyroglobulin epitope inducing experimental autoimmune thyroiditis or its anti-idiotype correlates with the disease.
In order to elucidate the role of anti-thyroglobulin (Tg) autoantibodies (A-Ab) in experimental autoimmune thyroiditis (EAT), a kinetic study was conducted in EAT-susceptible (CBA/J) and non-susceptible (C57BL/6) strains of mice. From day 0 to 70 post-Tg immunization, titers of A-Ab to Tg and to the linear 5-10-kDa Tg tryptic fragment inducing EAT as well as anti-idiotypic A-Ab representing the internal image of the thyroidogeneic antigen were measured. EAT onset, development and recovery correlate with the presence of two subsets of A-Ab only in susceptible strains of mice. First, with the presence of anti-Tg A-Ab to one determinant borne by the linear 5-10-kDa Tg tryptic fragment, and second with the presence of anti-idiotypic A-Ab specific for the monoclonal anti-Tg A-Ab (3B8G9) paratope which binds to Tg determinant inducing EAT.
INSERM U. 283, Hôpital Cochin, Paris, France.
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H
Tang
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C
Bedin
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Texier
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Charreire
D000818:Animals; D000888:Antibodies, Anti-Idiotypic / Q000276:immunology; D001323:Autoantibodies / Q000032:analysis*; D004195:Disease Models, Animal; D004198:Disease Susceptibility / Q000276:immunology; D000939:Epitopes / Q000276:immunology; D051379:Mice; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D010446:Peptide Fragments / Q000276:immunology; D013954:Thyroglobulin / Q000276:immunology*; D013967:Thyroiditis, Autoimmune / Q000276:immunology*
D000888:Antibodies, Anti-Idiotypic; D001323:Autoantibodies; D000939:Epitopes; D010446:Peptide Fragments; D013954:Thyroglobulin