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[Antithyroglobulin antibodies and autoimmune thyroiditis in man]
Allergologia Et Immunopathologia
|March 1, 1984
Summary
Antibodies against thyroglobulin were found in 11.8% of normal blood donors, indicating a potential role in autoimmune thyroiditis. These antibodies were resistant to 2-Mercaptoethanol, suggesting their involvement in thyroid tissue damage.
Area of Science:
- Immunology
- Endocrinology
- Autoimmunity
Background:
- Autoimmune thyroiditis pathogenesis may involve specific antibodies targeting thyroid antigens.
- Thyroglobulin is a key antigen in thyroid function and autoimmunity.
Purpose of the Study:
- To investigate the prevalence of antibodies against human thyroglobulin in normal blood donor sera.
- To assess the characteristics of these antibodies, specifically their resistance to 2-Mercaptoethanol.
Main Methods:
- Random selection of blood donors from a hospital.
- Determination of antibody titers against human thyroglobulin using the micro-method of passive hemagglutination.
- Testing antibody resistance to 2-Mercaptoethanol using the same method.
Main Results:
- 11.8% of normal sera exhibited positive titers for antibodies against thyroglobulin.
- Positive antibody titers ranged as high as Log2 11.
- All identified positive sera demonstrated resistance to 2-Mercaptoethanol.
Conclusions:
- The presence of thyroglobulin antibodies in a significant portion of the normal population suggests a potential role in the development of autoimmune thyroiditis.
- The resistance of these antibodies to 2-Mercaptoethanol indicates their immunoglobulin G (IgG) nature, which is typically associated with immune responses and potential tissue damage.