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An Official Publication of the Indian Association of Oral and Maxillofacial Pathologists


 
ORIGINAL ARTICLE Table of Contents   
Year : 2017  |  Volume : 21  |  Issue : 1  |  Page : 18-23
Immunolocalization of osteopontin in dysplasias and squamous cell carcinomas arising from oral epithelium


1 Department of Oral Pathology and Microbiology, Amrita School of Dentistry, AIMS, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
2 Department of Biostatistics, Amrita School of Dentistry, AIMS, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India

Correspondence Address:
Mahija Janardhanan
Department of Oral Pathology and Microbiology, Amrita School of Dentistry, AIMS, Amrita Vishwa Vidyapeetham, Kochi - 682 041, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0973-029X.203764

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Background: Early detection of oral squamous cell carcinoma (OSCC) remains one of the most efficient ways to ensure patient survival and improved quality of life. Although specific biomarkers related to OSCC have been investigated, a useful biomarker that assesses the transition potential of potentially malignant lesion to OSCC remains to be found. Osteopontin (OPN) has been recognized as an important factor in tumorigenesis and their expression in OSCC have been investigated earlier. In the present study, evaluation of OPN expression in premalignant and malignant lesions has been carried out to assess their possible role as a biomarker in the early diagnosis and prognosis of OSCC. Objectives: The objective of this study is to evaluate the role of OPN as a biomarker in the diagnosis and prognosis of OSCC. Materials and Methods: The study group consisted of archival paraffin-embedded blocks of ten cases each of varying grades of OSCC, oral epithelial dysplasias and epithelial hyperplasias. Sections were subjected to immunohistochemical staining for the biomarker OPN. Results: A positive OPN expression was noticed in epithelial dysplasias and SCC arising from the oral epithelium. A progressive increase in the intensity of staining was seen with increasing grades of dysplasias and a decrease in OPN expression with an increase in grades was observed in OSCC. Conclusion: The expression of OPN in full thickness of epithelium in severe dysplasias, carcinoma in situ, and in the superficial epithelium of OSCC suggest the possibility of considering OPN expression in full epithelial thickness in dysplasias as an indicator for malignant transformation.


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Journal of Oral and Maxillofacial Pathology | Published by Wolters Kluwer - Medknow
Online since 15th Aug, 2007