RESUMO
BACKGROUND: CD133 and AXL have been described as cancer stem cell markers, and c-MYC as a key regulatory cellular mechanism in colorectal cancer (CRC). AIM: Evaluate the prognostic role of the biomarkers CD133, AXL and c-MYC and their association with clinicopathologic characteristics in colorectal adenocarcinomas and adenomas. METHODS: A total of 156 patients with UICC stage I-IV adenocarcinomas (n=122) and adenomas (n=34) were analyzed. Tissue microarrays (TMA) from primary tumors and polyps for CD133, c-MYC and AXL expression were performed and analyzed for their significance with clinicopathologic characteristics. RESULTS: Poorly differentiated adenocarcinomas and disease progression were independent risk factors for poor overall survival. The median overall survival time was 30 months. Positive CD133 expression (35.9% of all cases), particularly of right-sided CRCs (44.8% of the CD133+ cases), was negatively correlated with death in the univariate analysis, which did not reach significance in the multivariate analysis. c-MYC (15.4% of all cases) was predominantly expressed in advanced-stage patients with distant (non-pulmonary/non-hepatic) metastasis. AXL expression was found only occasionally, and predominantly dominated in adenomas, with less penetrance in high-grade dysplasia. CONCLUSIONS: CD133 expression was not associated with inferior overall survival in CRC. While AXL showed inconclusive results, c-MYC expression in primary CRCs was associated with distant metastasis.
Assuntos
Biomarcadores Tumorais , Neoplasias Colorretais , Antígeno AC133 , Antígenos CD , Glicoproteínas , Humanos , Células-Tronco Neoplásicas , Peptídeos , PrognósticoRESUMO
BACKGROUND: A) CD133+ cytoplasmic B) AXL+ combined C) c-MYC+ nuclear. CD133 and AXL have been described as cancer stem cell markers, and c-MYC as a key regulatory cellular mechanism in colorectal cancer (CRC). AIM: Evaluate the prognostic role of the biomarkers CD133, AXL and c-MYC and their association with clinicopathologic characteristics in colorectal adenocarcinomas and adenomas. METHODS: A total of 156 patients with UICC stage I-IV adenocarcinomas (n=122) and adenomas (n=34) were analyzed. Tissue microarrays (TMA) from primary tumors and polyps for CD133, c-MYC and AXL expression were performed and analyzed for their significance with clinicopathologic characteristics. RESULTS: Poorly differentiated adenocarcinomas and disease progression were independent risk factors for poor overall survival. The median overall survival time was 30 months. Positive CD133 expression (35.9% of all cases), particularly of right-sided CRCs (44.8% of the CD133+ cases), was negatively correlated with death in the univariate analysis, which did not reach significance in the multivariate analysis. c-MYC (15.4% of all cases) was predominantly expressed in advanced-stage patients with distant (non-pulmonary/non-hepatic) metastasis. AXL expression was found only occasionally, and predominantly dominated in adenomas, with less penetrance in high-grade dysplasia. CONCLUSIONS: CD133 expression was not associated with inferior overall survival in CRC. While AXL showed inconclusive results, c-MYC expression in primary CRCs was associated with distant metastasis.
Assuntos
Antígeno AC133 , Biomarcadores Tumorais , Neoplasias Colorretais , Antígeno AC133/análise , Biomarcadores Tumorais/análise , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/patologia , Feminino , Humanos , Masculino , Metástase Neoplásica , Células-Tronco Neoplásicas/metabolismo , Prognóstico , Proteínas Proto-Oncogênicas c-myc/metabolismoRESUMO
ABSTRACT Background: CD133 and AXL have been described as cancer stem cell markers, and c-MYC as a key regulatory cellular mechanism in colorectal cancer (CRC). Aim: Evaluate the prognostic role of the biomarkers CD133, AXL and c-MYC and their association with clinicopathologic characteristics in colorectal adenocarcinomas and adenomas. Methods: A total of 156 patients with UICC stage I-IV adenocarcinomas (n=122) and adenomas (n=34) were analyzed. Tissue microarrays (TMA) from primary tumors and polyps for CD133, c-MYC and AXL expression were performed and analyzed for their significance with clinicopathologic characteristics. Results: Poorly differentiated adenocarcinomas and disease progression were independent risk factors for poor overall survival. The median overall survival time was 30 months. Positive CD133 expression (35.9% of all cases), particularly of right-sided CRCs (44.8% of the CD133+ cases), was negatively correlated with death in the univariate analysis, which did not reach significance in the multivariate analysis. c-MYC (15.4% of all cases) was predominantly expressed in advanced-stage patients with distant (non-pulmonary/non-hepatic) metastasis. AXL expression was found only occasionally, and predominantly dominated in adenomas, with less penetrance in high-grade dysplasia. Conclusions: CD133 expression was not associated with inferior overall survival in CRC. While AXL showed inconclusive results, c-MYC expression in primary CRCs was associated with distant metastasis.
RESUMO Racional: CD133 e AXL são descritos na literatura como marcadores de células-tronco tumorais, e c-MYC cumpre papel chave como mecanismo de regulação celular no câncer colorretal (CCR). Objetivo: Avaliar o papel prognóstico dos biomarcadores CD133, AXL e c-MYC e sua associação com características clinicopatológicas de adenocarcinomas e adenomas colorretais. Métodos: Um total de 156 pacientes com adenocarcinomas de estádio UICC I-IV (n=122) e adenomas (n=34) colorretais foram avaliados. Microarranjos teciduais (TMA) dos tumores primários e adenomas foram realizados em busca de expressão de CD133, c-MYC e AXL, com posterior análise de relação significativa com características clinicopatológicas. Resultados: Adenocarcinomas pobremente diferenciados e progressão de doença foram fatores de risco independentes para má sobrevida global. A taxa mediana de sobrevida global foi de 30 meses. Expressão positiva de CD133 (35,9% dos casos), particularmente em cânceres de cólon direito (44,8% dos casos CD133+), correlacionou-se negativamente com óbito na análise univariada, sem significância estatística na análise multivariada. c-MYC (15,4% dos casos) teve predomínio de expressão em pacientes com estádio avançado com metástases distantes (não-pulmonares/não-hepáticas). Expressão de AXL foi pouco encontrada, com predomínio em adenomas, com menor penetrância em displasia de alto grau. Conclusão: Expressão de CD133 não se associou com sobrevida global inferior em CCR. Enquanto AXL demonstrou resultados inconclusivos, expressão de c-MYC em tumores primários se associou-se à metástases à distância.
Assuntos
Humanos , Neoplasias Colorretais , Biomarcadores Tumorais , Peptídeos , Prognóstico , Células-Tronco Neoplásicas , Glicoproteínas , Antígenos CD , Antígeno AC133RESUMO
BACKGROUND: Colorectal cancer (CRC) is one of the most common types of cancer in the world. Over time, intestinal epithelial cells undergo mutations that may lead to proliferative advantage and the emergence of cancer. Mutations in the beta-catenin pathway are amongst those described in the development of CRC. AIM: To verify the existence of a relation between the presence of Wnt3, beta-catenin and CDX2 in colorectal cancer samples and clinical outcomes such as disease progression or death. METHOD: Wnt3a, beta-catenin and CDX2 immunohistochemistry was performed on CRC tissue microarray samples (n=122), and analysis regarding the relation between biomarker expression and disease progression or death was performed. RESULTS: No significant difference was found between the presence or absence of CDX2, beta-catenin or Wnt3a expression and clinical stage, tumor grade, disease progression or death. CONCLUSION: CDX2, beta-catenin and Wnt3a are not useful to predict prognosis in patients with CRC.
Assuntos
Fator de Transcrição CDX2/genética , Neoplasias Colorretais/diagnóstico , Proteína Wnt3/genética , beta Catenina/genética , Neoplasias Colorretais/genética , Progressão da Doença , Humanos , Imuno-HistoquímicaRESUMO
ABSTRACT Background: CD133 and AXL have been described as cancer stem cell markers, and c-MYC as a key regulatory cellular mechanism in colorectal cancer (CRC). Aim: Evaluate the prognostic role of the biomarkers CD133, AXL and c-MYC and their association with clinicopathologic characteristics in colorectal adenocarcinomas and adenomas. Methods: A total of 156 patients with UICC stage I-IV adenocarcinomas (n=122) and adenomas (n=34) were analyzed. Tissue microarrays (TMA) from primary tumors and polyps for CD133, c-MYC and AXL expression were performed and analyzed for their significance with clinicopathologic characteristics. Results: Poorly differentiated adenocarcinomas and disease progression were independent risk factors for poor overall survival. The median overall survival time was 30 months. Positive CD133 expression (35.9% of all cases), particularly of right-sided CRCs (44.8% of the CD133+ cases), was negatively correlated with death in the univariate analysis, which did not reach significance in the multivariate analysis. c-MYC (15.4% of all cases) was predominantly expressed in advanced-stage patients with distant (non-pulmonary/non-hepatic) metastasis. AXL expression was found only occasionally, and predominantly dominated in adenomas, with less penetrance in high-grade dysplasia. Conclusions: CD133 expression was not associated with inferior overall survival in CRC. While AXL showed inconclusive results, c-MYC expression in primary CRCs was associated with distant metastasis.
RESUMO Racional: CD133 e AXL são descritos na literatura como marcadores de células-tronco tumorais, e c-MYC cumpre papel chave como mecanismo de regulação celular no câncer colorretal (CCR). Objetivo: Avaliar o papel prognóstico dos biomarcadores CD133, AXL e c-MYC e sua associação com características clinicopatológicas de adenocarcinomas e adenomas colorretais. Métodos: Um total de 156 pacientes com adenocarcinomas de estádio UICC I-IV (n=122) e adenomas (n=34) colorretais foram avaliados. Microarranjos teciduais (TMA) dos tumores primários e adenomas foram realizados em busca de expressão de CD133, c-MYC e AXL, com posterior análise de relação significativa com características clinicopatológicas. Resultados: Adenocarcinomas pobremente diferenciados e progressão de doença foram fatores de risco independentes para má sobrevida global. A taxa mediana de sobrevida global foi de 30 meses. Expressão positiva de CD133 (35,9% dos casos), particularmente em cânceres de cólon direito (44,8% dos casos CD133+), correlacionou-se negativamente com óbito na análise univariada, sem significância estatística na análise multivariada. c-MYC (15,4% dos casos) teve predomínio de expressão em pacientes com estádio avançado com metástases distantes (não-pulmonares/não-hepáticas). Expressão de AXL foi pouco encontrada, com predomínio em adenomas, com menor penetrância em displasia de alto grau. Conclusão: Expressão de CD133 não se associou com sobrevida global inferior em CCR. Enquanto AXL demonstrou resultados inconclusivos, expressão de c-MYC em tumores primários se associou-se à metástases à distância.
Assuntos
Humanos , Masculino , Feminino , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/patologia , Biomarcadores Tumorais/análise , Antígeno AC133/análise , Prognóstico , Células-Tronco Neoplásicas/metabolismo , Proteínas Proto-Oncogênicas c-myc/metabolismo , Metástase NeoplásicaRESUMO
ABSTRACT Background: Colorectal cancer (CRC) is one of the most common types of cancer in the world. Over time, intestinal epithelial cells undergo mutations that may lead to proliferative advantage and the emergence of cancer. Mutations in the beta-catenin pathway are amongst those described in the development of CRC. Aim: To verify the existence of a relation between the presence of Wnt3, beta-catenin and CDX2 in colorectal cancer samples and clinical outcomes such as disease progression or death. Method: Wnt3a, beta-catenin and CDX2 immunohistochemistry was performed on CRC tissue microarray samples (n=122), and analysis regarding the relation between biomarker expression and disease progression or death was performed. Results: No significant difference was found between the presence or absence of CDX2, beta-catenin or Wnt3a expression and clinical stage, tumor grade, disease progression or death. Conclusion: CDX2, beta-catenin and Wnt3a are not useful to predict prognosis in patients with CRC.
RESUMO Racional: O câncer colorretal (CCR) é um dos tipos mais comuns no mundo. As células epiteliais intestinais podem sofrer mutações que ocasionam vantagem proliferativa e culminam com o surgimento do câncer. Mutações da via da beta-catenina foram descritas entre as que podem ocasioná-lo. Objetivo: Verificar a existência de relação entre a expressão de Wnt3, beta-catenina e CDX2 em amostras de câncer colorretal com os eventos clínicos progressão de doença e óbito. Método: Foi realizada análise imunoistoquímica de Wnt3a, beta-catenina e CDX2 em blocos multiamostrais de CRC (n=122), e avaliada a relação entre a expressão dos biomarcadores e os desfechos progressão de doença e óbito. Resultados: Não foram encontradas diferenças significativas entre a expressão ou ausência de CDX2, beta-catenina ou Wnt3a e estádio clínico, grau de diferenciação tumoral, presença de progressão de doença ou evolução ao óbito. Conclusão: Os marcadores CDX2, beta-catenina e Wnt3a não são úteis para predizer prognóstico em pacientes com CCR.
Assuntos
Humanos , Neoplasias Colorretais/diagnóstico , beta Catenina/genética , Proteína Wnt3/genética , Fator de Transcrição CDX2/genética , Imuno-Histoquímica , Neoplasias Colorretais/genética , Progressão da DoençaRESUMO
O trauma facial é prevalente na emergência e pode trazer múltiplas repercussões para o indivíduo. O objetivo desse trabalho é avaliar o perfil epidemiológico de trauma facial em um hospital terciário. Trata-se de um estudo retrospectivo analítico, com dados de 58 prontuários de vítimas de fraturas faciais traumáticas entre janeiro de 2014 a janeiro de 2016, diagnosticadas através de exame físico e exames de imagem. As variáveis analisadas: sexo, idade, etiologia, topografia das fraturas, lesões associadas, período de internamento e estado geral. Homens foram mais acometidos, o mecanismo de trauma mais frequente foi lesão direta e a maioria das fraturas foi individualizada. O número de fraturas faciais múltiplas variou conforme a idade e com o mecanismo etiológico. O período de internamento foi curto. A pesquisa nessa área tem grande importância no sentido de estruturar os serviços de saúde, de modo que atuem reduzindo danos
Facial trauma is prevalent in the emergency room and can have multiple repercussions for the individual. The objective of this study is to evaluate the epidemiological profile of facial trauma in a tertiary hospital. This is a retrospective analytical study, with data from 58 medical records of victims of traumatic facial fractures between January 2014 and January 2016, diagnosed through physical examination and imaging. The variables: sex, age, etiology, fracture topography, associated lesions, period of hospitalization and general condition. The men were more affected, the most frequent trauma mechanism was direct injury and most of the fractures were individualized. The number of multiple facial fractures varied according to age and etiological mechanism. The period of hospitalization was short. Research in this area has great importance in order to prioritize and structure health services so that they act to reduce damages