Expression of PAR-4 and PHLDA1 is prognostic for overall and disease-free survival in oral squamous cell carcinomas
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Citações na Scopus
18
Tipo de produção
article
Data de publicação
2013
Título da Revista
ISSN da Revista
Título do Volume
Editora
SPRINGER
Autores
COUTINHO-CAMILLO, Claudia Malheiros
LOURENCO, Silvia Vanessa
NONOGAKI, Suely
VARTANIAN, Jose Guilherme
KOWALSKI, Luiz Paulo
SOARES, Fernando Augusto
Citação
VIRCHOWS ARCHIV, v.463, n.1, p.31-39, 2013
Resumo
PAR-4 is a tumor suppressor protein with a pro-apoptotic function and down-regulation of PAR-4 is seen in a variety of tumors. PHLDA1 gene overexpression has been shown to reduce cell proliferation and induce cell death in a variety of cell types. In this study, 229 cases of oral squamous cell carcinoma (OSCC), arranged in a tissue microarray, were analyzed by immunohistochemistry. PAR-4 expression was predominantly moderate to strong and expression of PHLDA1 was predominantly negative or weak. Cytoplasmic expression of PAR-4 was associated with advanced clinical stage. Expression of PHLDA1 was associated with advanced clinical stage of the tumour. Five-year overall and disease-free survival rates differed significantly between cases that did and cases that did not express PHLDA1, and by multivariate analysis, expression of PHLDA1 and PAR-4 were independent prognostic factors in OSCC patients. Expression of PAR-4 and PHLDA1 is altered in OSCC and might be a valuable prognostic indicator for this disease.
Palavras-chave
Oral squamous cell carcinoma, Tissue microarray, Immunohistochemistry, PAR-4, PHLDA1
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