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Altered Immunohistochemical Expression of Mast Cell Tryptase and Chymase in the Pathogenesis of Oral Submucous Fibrosis and Malignant Transformation of the Overlying Epithelium

Author

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  • Archana Yadav
  • Rajiv S Desai
  • Bansari A Bhuta
  • Jatinder S Singh
  • Reema Mehta
  • Akash P Nehete

Abstract

Mast cells (MCs) expressing serine proteases; tryptase and chymase, are associated with fibrosis in various diseases. However, little is known about their involvement in oral submucous fibrosis (OSF). Our goal was to evaluate the role of MC tryptase and chymase in the pathogenesis of OSF and its malignant transformation. Immunohistochemical expression of MC tryptase and chymase was evaluated in 20 cases of OSF, 10 cases of oral squamous cell carcinoma (OSCC) and 10 cases of healthy controls. Subepithelial zone of Stage 1 and 2 while deep zone of Stage 3 and 4 OSF demonstrated increased tryptase positive MCs. OSCC revealed a proportionate increase in tryptase and chymase positive MCs irrespective of areas of distribution. An altered balance in the subepithelial and deep distribution of tryptase and chymase positive MCs play an important role in the pathogenesis of OSF and its malignant transformation.

Suggested Citation

  • Archana Yadav & Rajiv S Desai & Bansari A Bhuta & Jatinder S Singh & Reema Mehta & Akash P Nehete, 2014. "Altered Immunohistochemical Expression of Mast Cell Tryptase and Chymase in the Pathogenesis of Oral Submucous Fibrosis and Malignant Transformation of the Overlying Epithelium," PLOS ONE, Public Library of Science, vol. 9(5), pages 1-13, May.
    • Handle: RePEc:plo:pone00:0098719
    DOI: 10.1371/journal.pone.0098719
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