[Occurrence of various autoantibodies in autoimmune diseases]

The study aimed at determining the incidence of autoantibodies occurrence in the course of autoimmunological diseases of the thyroid gland and in healthy population. Autoantibodies against various structures were assayed, including: cellular nuclei, smooth muscles, mitochondria, biliary tubules, parietal cells, reticular fibres, striated muscles as well as thyroglobulin and thyroid microsomes. The study involved 63 patients with autoimmunological diseases of the thyroid gland (35 patients with Graves-Basedow disease and 28 patients with Hashimoto's disease) and 30 healthy individuals. Thyroid antimicrosomal and antithyroglobulin antibodies were assayed with RIA in stable phase whereas the remaining antibodies--with multifunctional indirect immunofluorescence test. The obtained results are the following: antimicrosomal antibodies were present in 68.3% cases while antithyroglobulin antibodies in 76.2% of the examined patients with autoimmunological diseases of the thyroid gland. Immunofluorescence tests performed in the same group have shown antinuclear antibodies in 13% of cases, antibodies against smooth muscles in 28.6%, antimitochondrial antibodies in 1.6%, antibodies against biliary tubules in 3.4%, antibodies against parietal cells in 11.1%, antibodies against reticular fibres in 7.9%, and antibodies against striated muscles in 9.5% of cases. Antinuclear antibodies, antibodies against smooth muscles, and antibodies against both thyroidal microsome and thyroglobulin (in 3.3%) were the only antibodies found in the control group.