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Endocrinol Jpn. 1989 Jun;36(3):381-6.

Incidences of antibodies to Yersinia enterocolitica: high incidence of serotype O5 in autoimmune thyroid diseases in Japan.

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Central Laboratory for Clinical Investigation, Osaka University Medical School, Japan.


Antibodies to Yersinia enterocolitica serotype O3, O5, O6 and O9 were measured by the micro-agglutination method in 445 healthy subjects and patients with Grave's disease (n = 70), Hashimoto's disease (n = 45) and thyroid tumor (n = 29). In contrast to previous reports, the incidence of antibodies to serotype O3 in each group of patients with thyroid diseases was not significantly different from that in healthy subjects. However, the incidence of antibodies to serotype O5 was significantly higher in patients with Graves' disease (81.4%, P less than 0.001) and Hashimoto's disease (91.1%, P less than 0.001) than in healthy subjects (258.9%). Significantly increased incidence of antibodies to serotypes O6 and O9 was observed only in patients with Hashimoto's disease (40.0% and 51.1% vs healthy subjects 24.7% and 29.9%, respectively). Patients with thyroid tumor showed no increase in any serotype of Yersinia enterocolitica. No correlations was found between the titers of anti-Yersinia antibodies and anti-thyroglobulin or anti-microsomal antibodies. These data indicate an association between thyroid autoimmunity and antibodies to Yersinia enterocolitica. These results are different from those in reports from other countries, suggesting that serotype specificity may be influenced by racial or genetic factors.

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