Protein expression of c-erbB-2 and p53 in normal ducts, ductal carcinoma in situ and invasive carcinoma of the same breast
Expressão das proteínas c-erbB-2 e p53 nos ductos normais, carcinoma ductal in situ e carcinoma invasivo da mesma mama
dc.creator | Menezes, Marcus Vinicius Martins de | |
dc.creator | Cestari, Anna Letícia Oliveira | |
dc.creator | Almeida, Orlando | |
dc.creator | Alvarenga, Marcelo | |
dc.creator | Pinto, Glauce Aparecida | |
dc.creator | Gurgel, Maria Salete Costa | |
dc.creator | Souza, Gustavo Antônio de | |
dc.creator | Zeferino, Luiz Carlos | |
dc.date | 2006-01-01 | |
dc.date | 2014-12-23T13:15:39Z | |
dc.date | 2015-11-26T11:42:01Z | |
dc.date | 2014-12-23T13:15:39Z | |
dc.date | 2015-11-26T11:42:01Z | |
dc.date.accessioned | 2018-03-28T20:45:39Z | |
dc.date.available | 2018-03-28T20:45:39Z | |
dc.identifier | Sao Paulo Medical Journal. Associação Paulista de Medicina - APM, v. 124, n. 3, p. 121-124, 2006. | |
dc.identifier | 1516-3180 | |
dc.identifier | S1516-31802006000300002 | |
dc.identifier | 10.1590/S1516-31802006000300002 | |
dc.identifier | http://dx.doi.org/10.1590/S1516-31802006000300002 | |
dc.identifier | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802006000300002 | |
dc.identifier | http://www.repositorio.unicamp.br/jspui/handle/REPOSIP/38487 | |
dc.identifier | http://www.repositorio.unicamp.br/handle/REPOSIP/38487 | |
dc.identifier | http://repositorio.unicamp.br/jspui/handle/REPOSIP/38487 | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1234939 | |
dc.description | CONTEXT AND OBJECTIVE: Breast cancer is thought to derive from progressively aberrant, non-invasive breast lesions, but it is not known exactly how invasive breast cancer develops from these lesions. The aim of this study was to verify the changes in c-erbB-2 and p53 protein expression between non-neoplastic ducts, ductal carcinoma in situ and invasive ductal carcinoma found in the same breast. DESIGN AND SETTING: This was a cross-sectional study at Centro de Atenção Integral à Saúde da Mulher, Campinas, Brazil. METHODS: Fifty-six women with invasive ductal carcinoma and ductal carcinoma in situ in the same breast were included. The expression of c-erbB-2 and p53 proteins was assessed in non-neoplastic and neoplastic cells using immunohistochemical techniques. RESULTS: The c-erbB-2 protein was absent in non-neoplastic ducts but was present in 46% and 36% of in situ and invasive carcinoma components, respectively. Only 2% of non-neoplastic ducts, and 18% and 16% of ductal carcinoma in situ and invasive carcinoma components, respectively, were positive for p53 protein. No significant difference in c-erbB-2 and p53 protein expression was observed between in situ and invasive components. The nuclear grade agreement between in situ and invasive carcinoma was very good. CONCLUSIONS: The invasiveness of ductal carcinoma in situ seems to be independent of the Her-2/neu and TP53 genes. The general features of an occurrence of breast carcinoma are formulated at the outset of carcinogenesis, and the Her-2/neu and TP53 genes are involved. | |
dc.description | CONTEXTO E OBJETIVO: O câncer de mama se origina de lesões não-invasivas, tais como as hiperplasias atípicas e o carcinoma ductal in situ, porém não se sabe exatamente como o câncer se torna invasivo. O objetivo foi verificar alterações na expressão das proteínas c-erbB-2 e p53 entre ductos não-neoplásicos, carcinoma ductal in situ e carcinoma ductal invasivo presentes na mesma mama. TIPO DE ESTUDO E LOCAL: Estudo transversal, realizado no Centro de Atenção Integral à Saúde da Mulher, Campinas, São Paulo, Brasil. MÉTODOS: Cinqüenta e seis mulheres com o diagnóstico de carcinoma ductal invasivo e carcinoma ductal in situ na mesma mama foram selecionadas e incluídas neste estudo. A expressão das proteínas c-erbB-2 e p53 foi avaliada usando imunoistoquímica. RESULTADOS: A proteína c-erbB-2 estava ausente nos ductos não-neoplásicos, mas estava presente em 46% e 36%, respectivamente, dos componentes de carcinomas in situ e invasivos. Apenas 2% dos ductos não-neoplásicos, 18% e 16% dos carcinomas in situ e carcinomas invasivos, respectivamente, foram positivos para a proteína p53. Não houve diferença significativa na expressão das proteínas c-erbB-2 e p53 entre os carcinomas ductal in situ e invasivo. A concordância do grau nuclear entre os carcinomas ductal in situ e invasivo foi muito boa. CONCLUSÕES: A capacidade de invadir do carcinoma in situ parece independente dos genes HER-2/neu e TP53. A aparência geral do carcinoma de mama é formulada na iniciação da carcinogênese e os genes Her-2/neu e TP53 estão envolvidos. | |
dc.description | 121 | |
dc.description | 124 | |
dc.language | en | |
dc.publisher | Associação Paulista de Medicina - APM | |
dc.relation | Sao Paulo Medical Journal | |
dc.rights | aberto | |
dc.source | SciELO | |
dc.subject | Neoplasias mamárias | |
dc.subject | Carcinoma ductal in situ | |
dc.subject | Carcinoma de ductos infiltrante | |
dc.subject | Proteína c-erbB-2 | |
dc.subject | Proteína p53 | |
dc.subject | Breast neoplasms | |
dc.subject | Ductal carcinoma in situ | |
dc.subject | Carcinoma | |
dc.subject | Receptor erbB-2 | |
dc.subject | Protein p53 | |
dc.title | Protein expression of c-erbB-2 and p53 in normal ducts, ductal carcinoma in situ and invasive carcinoma of the same breast | |
dc.title | Expressão das proteínas c-erbB-2 e p53 nos ductos normais, carcinoma ductal in situ e carcinoma invasivo da mesma mama | |
dc.type | Artículos de revistas |