ABSTRACT
OBJECTIVE: This study aimed to investigate the expression of the MSH2 DNA repair protein in head and neck squamous cell carcinoma (HNSCC) in order to analyze its association with clinicopathologic factors and overall survival of patients. MATERIAL AND METHODS: Clinical data and primary lesions of HNSSC were collected from 55 patients who underwent surgical resection with postoperative radiotherapy in Montes Claros, state of Minas Gerais, Brazil, between 2000 and 2008. Immunohistochemical reactions were performed to analyze MSH2 protein expression. RESULTS: Bivariate analysis showed no significant correlation or association between MSH2 expression and clinicopathologic parameters by Mann-Whitney and Kruskal-Wallis tests. Patients with locoregional metastatic disease (OR=4.949, p<0.001) and lower MSH2 immunohistochemical expressions (OR=2.943, p=0.032) presented poorer survival for HNSCC by Cox regression models. CONCLUSIONS: Our data demonstrated that lower MSH2 expression might contribute to a higher clinic aggressiveness of HNSCC by promoting an unfavorable outcome. .
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Carcinoma, Squamous Cell/metabolism , DNA Repair , Head and Neck Neoplasms/metabolism , /metabolism , Carcinoma, Squamous Cell/genetics , Carcinoma, Squamous Cell/pathology , Head and Neck Neoplasms/genetics , Head and Neck Neoplasms/pathology , Kaplan-Meier Estimate , Neoplasm Staging , Prognosis , Retrospective Studies , Statistics, Nonparametric , Time FactorsABSTRACT
OBJECTIVE: This study is aimed to evaluate the immunostaining influence of p53 and Ki67 proteins inareas of field cancerization of head and neck squamous cell carcinoma (HNSCC). We analyzed associationsof these proteins with clinicopathological parameters and the relation between their immunoexpression inHNSCC. MATERIAL AND METHOD: In a retrospecive analysis, 40 patients with HNSCC were selectedaccording to the recurrence of the disease, forming two groups: recurrent and non-recurrent HNSCC.Morphological gradations and imunnohistochemical analysis of p53 and Ki67 were performed in invasivefront and tumor adjacent epithelium. RESULTS: It was found significant associations between tumor recurrenceand p53 positivity in mucosa and invasive front. However, no association was found between p53immunostaining and the clinicopathological parameters. Ki67 was not related to any clinicopathologicalparameter either. The association between Ki67 and p53 expression was not significant. There was no significant inluence of recurrence in the clinicopathological parameters. Individuals with T1/T2 tumor size, non-recurrentand p53-negative in tumor adjacent epithelium presented better overall survival of HNSCC. CONCLUSION:p53 positivity in adjacent epithelium and invasive front of recurrent HNSCC is suggested in this study.
OBJETIVO: Avaliar a influência da imunoexpressão das proteínas p53 e Ki67 em áreas de campos de cancerização do carcinoma de células escamosas da cabeça e pescoço. Analisamos a associação dessas proteínas com parâmetros clínico-patológicos e a relação entre sua imunoexpressão.MATERIAL E MÉTODO: Em análise retrospectiva, 40 pacientes foram selecionados, de acordo com a recorrência da doença, formando dois grupos: com recorrência e sem recorrência da neoplasia. Gradações morfológicas e análises histoquímicas foram efetuadas na área de invasão e no epitélio adjacente ao tumor. RESULTADOS: Encontrou-se associações significativas entre a recorrência do tumor e positividade para p53 na mucosa e na área da lesão. Entretanto, não encontrou-se associação entre p53 e parâmetros clínico-patológicos. Ki67 não foi relacionada com qualquer parâmetro, igualmente. A associação entre expressão de Ki67 e p53 não foi significante e não houve influência significante de recorrência nos parâmetros clínico-patológicos. Indivíduos com tumores T1/T2, não recorrentes, e p53 negativos no epitélio adjacente ao tumor apresentaram melhor sobrevida à neoplasia. CONCLUSÃO: Positividade para p53 no epitélio adjacente e na área da neoplasia de carcinoma de células escamosas é sugerida por este estudo.
Subject(s)
Humans , Middle Aged , Carcinoma, Squamous Cell/immunology , Carcinoma, Squamous Cell/pathology , Head and Neck Neoplasms/immunology , Head and Neck Neoplasms/pathology , /analysis , /analysis , Age Distribution , Cell Count , Immunohistochemistry , Multivariate Analysis , Sex Distribution , Survival RateABSTRACT
OBJECTIVES: This study aimed to examine the association of CD57+ T cells and MVD withclinical parameters and prognosis of HNSCC. MATERIAL AND METHOD: In a restrospectiveanalysis, 43 cases of primary HNSCC have been studied. We also analysed CD57 and CD31counting. T and N parameters was analized by Binary logistic regression analysis. Survival wasanalysed by Cox regression analysis. RESULTS: CD31 was not associated with anyclinicopathological parameters. CD57 immunoexpression was associated with locorregionalpresence. Cox regression test showed correlation of worse survival with locorregional metastasispresence. For binary logistic parameter, WHO Grade parameter was associated with smaller tumorsize and absent metastasis CD57+ T cells count was relationed with worse survival.CONCLUSION: There was no association between MVD and clinicopathological parameters.Locorregional metastasis presenting high CD57 positivity. No association was found betweenCD57 and the other clinicopathological parameters. Multivariate analysis showed that individualspresenting locorregional metastasis were associated with poor survival. CD57 count and WHOgrade were associated with larger tumor size.
OBJETIVO: Estudou-se a associação de células CD57+T e densidade microvascular comparâmetros clínicos e prognóstico do carcinoma de células escamosas de cabeça e pescoço(CCECP). MATERIAL E MÉTODO: Em análise retrospectiva, 43 casos de CCEP foramestudados. Analisamos também a contagem de CD57 e CD32. Os parâmetros T e N foramanalisados pela análise da regressão logística binária. A sobrevivência foi submetida a anális deregressão de Cox. RESULTADOS: CD31 não foi associada com nenhum parâmetroclinicopatológico. A imunoexpressão do CD57 associou-se com presença locorregional. O testede regressão de Cox demonstrou correlação entre pior sobrevivência com presença locorregionalde metástase. Para o parâmetro de logística binária, o parâmetro da OMS foi associado comtumores menores e ausência de metástases. A contagem das células CD57+ foi relacionada coma pior sobrevivência. CONCLUSÃO: Não houve associação entre microdensidade vascular eparâmetros clínico-patológicos. Metástases locorregionais apresentaram alta positividade paraCD57. Não foi encontrada associação entre CD57 e outros parâmetros clínico-patológicos. Análisemultivariada demonstrou que indivíduos apresentando metástases locorregionais apresentarampobre sobrevida. Contagem de CD57 e grau da OMS foram associados com tumores maiores.