Heparanase gene and protein expression in ameloblastoma: possible role in local invasion of tumor cells

Nagatsuka, H.; Han, P.P.; Tsujigiwa, H.; Siar, C.H.; Gunduz, M.; Sugahara, T.; Sasaki, A.; Nakajima, M.; Naomoto, Y.; Nagai, N. (2005) Heparanase gene and protein expression in ameloblastoma: possible role in local invasion of tumor cells. Oral Oncology, 41 (5). pp. 542-548. ISSN 1368-8375

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      Ametoblastoma is the most common odontogenic neoplasm, particularized by its local invasiveness. Heparanase is the endo-glucuronidase enzyme that specifically cleaves heparan sulfate, the important modulator of extracellular matrix, and related to invasion of tumor cells. In this study, we addressed to show the gene expression and localization of heparanase in ametoblastoma. Immunohistochemistry and in situ hybridization of heparanase were carried out in 23 ameloblastomas. Strong expression of heparanase at both mRNA and protein levels was detected in all ameloblastomas studied. Small tumor nests and budding epithelial. branches showed stronger staining pattern and the stromal tissues at the immediate vicinity of the tumor nests with strong heparanase expression were loose and edematous. Cystic areas and squamous metaplastic areas of the tumor showed intense staining with heparanase antibody proposing the implication of heparanase in these processes. These results suggest the possible contribution of heparanase in the local invasiveness and secondary morphologic changes of ameloblastoma. (c) 2005 Elsevier Ltd. All rights reserved.

      Item Type: Article
      Journal or Publication Title: Oral Oncology
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      Uncontrolled Keywords: Ameloblastoma heparanase heparan sulfate local invasion fibroblast-growth-factor sulfate proteoglycans basement-membranes cancer metastasis localization involvement angiogenesis syndecan-1 prognosis molecules
      Subjects: R Medicine > RK Dentistry
      Divisions: Faculty of Dentistry > Dept of Oral Pathology & Oral Medicine & Periodontology
      Depositing User: Ms Nursyafiqah Abd Malek
      Date Deposited: 09 Jan 2013 10:39
      Last Modified: 09 Jan 2013 10:39
      URI: http://eprints.um.edu.my/id/eprint/4291

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