Journal of the Korean Association of Oral and Maxillofacial Surgeons

The Korean Association of Oral and Maxillofacial Surgeons (대한구강악안면외과학회)
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EXPRESSION OF CYTOKERATIN SUBTYPES AND VIMENTIN IN AMELOBLASTOMA

사기질모세포종에서 Cytokeratin 아형과 Vimentin의 발현

  • Kang, Mi-Seon (Department of Pathology, Pusan Paik Hospital) ;
  • Yoon, Hye-Kyoung (Department of Pathology, Pusan Paik Hospital) ;
  • Kim, Woo-Hyung (Oral and Maxillofacial Surgery, Pusan Paik Hospital) ;
  • Choi, Soo-Im (Department of Pathology, Dongrae Paik Hospital, Inje University)
  • 강미선 (인제대학교 의과대학 부산백병원 병리과) ;
  • 윤혜경 (인제대학교 의과대학 부산백병원 병리과) ;
  • 김우형 (인제대학교 의과대학 부산백병원 구강외과) ;
  • 최수임 (동래백병원 병리과)
  • Published : 2005.08.31
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Abstract

Ameloblastoma is the most common odontogenic tumor of the jawbones, but the origin of this tumor has been remained to be unproven. Cytokeratins (CKs) are specific intermediate filament of epithelial cells, and vimentin is expressed in mesenchymal cells. The immunohistochemical detection of different CKs and vimentin has made it easier to know the origin of tumor. Paraffin-embedded tissue sections from 15 ameloblastomas and 1 ameloblastic carcinoma were used for immunohistochemical evaluation of CK 7, 8, 13, 14, 19 and vimentin. Their expression is evaluated in different tumor cells, which are observed in different type of tumors. In the follicular and reticular subtype, central stellate cells of tumor nests expressed CK 8, 14, 19 and peripheral columnar cells expressed CK 14. CK 7, and 13 were not expressed. Vimentin was detected in fibrous stroma around tumor nest, not in tumor cells. The tumor cells of ameloblastic carcinoma expressed CK 7, 14 and 19, but CK 8 was more weakly stained than that in ameloblastoma. Central stellate cells and peripheral columnar cells of acanthomatous subtype showed same expression pattern with others. Meta plastic squamous cells expressed CK 8, 14, 19 and keratinizing squamous cells expressed CK 13, 19. CK 7 and vimentin were not detected in tumor cells and vimentin was expressed in fibrous stroma. Most of the tumor cells of ameloblastoma showed CK 14 and CK 19 and did not express CK 7 and vimentin. These findings were similar to the immunophenotype of dental lamina. And these results will be beneficial to differential diagnosis of odontogenic tumors and other kind of tumors arising at the oral cavity.

Keywords

References

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