Enhanced cellular proliferative activity and cell death in chronic thyroiditis and thyroid papillary carcinoma

J Cancer Res Clin Oncol. 1995;121(12):746-52. doi: 10.1007/BF01213321.

Abstract

For the analysis of cellular proliferative activity and cell death in thyroid diseases, the Ki-67 labeling index, bcl-2 protein expression and cell death of follicular epithelia by immunohistochemistry and in situ DNA nick-end labeling methods were evaluated in normal thyroid tissues as well as in surgical specimens from cases of Hashimoto's disease (16 cases), focal lymphocytic thyroiditis (13 cases), Graves' disease (15 cases), follicular adenoma (20 cases) and papillary carcinoma (43 cases). Cellular proliferative activity and cell death were both enhanced in cases of thyroiditis, including Hashimoto's disease and focal lymphocytic thyroiditis. Thyroids from patients with follicular adenoma and papillary carcinoma also showed increased cellular proliferative activity and cell death. In addition, predominant high cellularity and partial loss of bcl-2 protein expression in papillary carcinoma suggested that the overgrowth and dedifferentiation were associated with malignancy.

MeSH terms

  • Carcinoma, Papillary / metabolism
  • Carcinoma, Papillary / pathology*
  • Cell Death / physiology
  • Cell Division / physiology
  • Cell Transformation, Neoplastic
  • DNA / analysis
  • Humans
  • Immunohistochemistry
  • Ki-67 Antigen
  • Neoplasm Proteins
  • Nuclear Proteins
  • Proto-Oncogene Proteins / analysis
  • Proto-Oncogene Proteins / biosynthesis
  • Proto-Oncogene Proteins / physiology
  • Proto-Oncogene Proteins c-bcl-2
  • Thyroid Neoplasms / metabolism
  • Thyroid Neoplasms / pathology*
  • Thyroiditis, Autoimmune / metabolism
  • Thyroiditis, Autoimmune / pathology*

Substances

  • Ki-67 Antigen
  • Neoplasm Proteins
  • Nuclear Proteins
  • Proto-Oncogene Proteins
  • Proto-Oncogene Proteins c-bcl-2
  • DNA