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2012, Number 1

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Rev Cubana Estomatol 2012; 49 (1)

Histopathological relation of epithelial dysplasia to p53 oncoprotein in oral leukoplakia

Batista CZ, Rodríguez PI, Miranda TJD, Rengifo CE, Rodríguez OT, Fernández JME

Language: Spanish
References: 30
Page:
PDF size: 229.07 Kb.


ABSTRACT

The oral leukoplasia is a well known precancerous injury due to its association with the presence of epithelial dysplasia and its trend to malignant transformation. To eliminate the subjectivity in the determination of the epithelial dysplasia degrees, biological markers have been used among them the AcM.antip53 Thus, authors assessed the expression of AcM antip53 in the different degrees of epithelial dysplasia in the oral leukoplasia. Biopsies from 46 patients diagnosed with oral leukoplasia were used from the Oral Pathology Department of the Stomatology Faculty of La Habana. Samples were processed by the paraffin-inclusion technique and stained with immunohistochemical technique of the avidin-biotin-peroxidase complex for the AcM p53. The correlation between the immunoassay pattern for p53 and the degree of epithelial dysplasia was studied. It was demonstrated that there is a significant association between the immunostain of basal and supra-basal cells of epithelium with the p53 oncoprotein in the different degrees of severity of the epithelial dysplasia, which could be related to the progressive increase of the observed cellular atypia. We concluded that in the study samples there was a coincident relation of the increase in the degree of severity of the epithelial dysplasia, with the marking of the p53 oncoprotein. These evidences suggested that the immunohistochemical analysis of p53 overall with the histological parameters mainly those related to the degree of severity of the epithelial dysplasia could be used to made a more accurate diagnosis and to contribute to prevention of oral cancer.


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