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Dendritic cells in various human thyroid diseases

M Yamakawa1, H Kato, S Takagi

  • 1Second Department of Pathology, Yamagata University School of Medicine, Japan.

In Vivo (Athens, Greece)
|May 1, 1993
PubMed
Summary

Dendritic cells (DCs) expressing S-100 protein and CD1 were found in thyroid diseases. These cells are linked to immune responses in papillary carcinoma and Hashimoto's disease, suggesting a role in autoimmunity.

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Area of Science:

  • Immunology
  • Pathology
  • Endocrinology

Background:

  • Dendritic cells (DCs) are crucial antigen-presenting cells in immune regulation.
  • Thyroid diseases, including papillary carcinoma and Hashimoto's disease, involve complex immune system interactions.
  • Understanding DC infiltration in thyroid tissues is key to elucidating disease mechanisms.

Purpose of the Study:

  • To investigate the presence and characteristics of S-100 protein-positive and CD1-positive dendritic cells (DCs) in various human thyroid disease tissues.
  • To correlate DC numbers with the expression of S-100 protein and Ia-antigen on thyrocytes.

Main Methods:

  • Immunohistochemical analysis of thyroid tissue samples.
  • Detection of S-100 protein and CD1 markers on dendritic cells.

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  • Assessment of thyrocyte expression of S-100 protein and Ia-antigen.

    • Main Results:

    • Dendritic cells (DCs) were frequently observed in papillary carcinoma and Hashimoto's disease tissues.
    • Infiltrating DCs were predominantly identified as Interdigitating Dendritic Cells (IDCs).
    • A significant correlation was found between the number of DCs and thyrocyte expression of S-100 protein and Ia-antigen.

    Conclusions:

    • Dendritic cells (DCs) are significantly involved in the immune pathology of papillary carcinoma and Hashimoto's disease.
    • DCs may contribute to immune defense mechanisms against thyroid papillary carcinomas.
    • DCs likely play a role in the progression and self-perpetuation of autoimmune thyroid diseases.