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Immunohistochemical study on proliferating cell nuclear antigen expression in ameloblastomas

J Kim1, J I Yook

  • 1Department of Oral Pathology, Dental College, Yonsei University, Seoul, Korea.

European Journal of Cancer. Part B, Oral Oncology
|January 1, 1994
PubMed
Summary

Proliferating cell nuclear antigen (PCNA) activity in ameloblastomas showed no difference between histological types. High PCNA reactivity in ameloblastic carcinoma and recurrent cases suggests its utility in distinguishing benign from malignant ameloblastomas.

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Area of Science:

  • Oral Pathology
  • Oncology
  • Cell Biology

Background:

  • Ameloblastomas are odontogenic tumors with varying biological behaviors.
  • Understanding proliferation markers is crucial for accurate diagnosis and prognosis.

Purpose of the Study:

  • To evaluate the proliferating activity of ameloblastomas using proliferating cell nuclear antigen (PCNA).
  • To correlate PCNA activity with histological type and biological behavior.
  • To differentiate between benign and malignant ameloblastoma variants.

Main Methods:

  • Immunohistochemical detection of PCNA in 38 solid and unicystic ameloblastomas, 1 ameloblastic carcinoma, and 1 recurrent case.
  • Comparison with 20 dentigerous cysts as controls.
  • Analysis of PCNA reactivity across different histological subtypes.

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Main Results:

  • No significant difference in PCNA activity was observed among different histological types of solid ameloblastomas.
  • Ameloblastic carcinoma and the recurrent ameloblastoma case exhibited markedly high PCNA reactivity.
  • Plexiform intraluminal growth in unicystic ameloblastomas was associated with tumor transformation.

Conclusions:

  • PCNA is a valuable marker for distinguishing between benign and malignant ameloblastomas.
  • High PCNA expression indicates a higher potential for malignancy or recurrence.
  • Plexiform intraluminal growth is a key feature in the malignant transformation of unicystic ameloblastomas.