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Previous issue date: 2015-03-02 / The elderly population is now the fastest growing in the world. The immune system becomes compromised with age, being less effective in fighting malignancies. An amended fee of CD8 T cells, increased compared to CD4 cells (usually more frequent in the blood) defines the concept of immune risk profile in the elderly (less than 1 ratio). In this research, we studied the immunological profile of 58 women with breast cancer, determining the ratio of CD4+/CD8+ in peripheral blood. We compare this link into groups according to age of the patient (less or more than 60 years), lymph node involvement, tumor size, the immunohistochemical profile, and the occurrence of adverse events (local recurrence, axillary recurrence and metastasis). The ratio of CD4+ /CD8+ lymphocytes average was 1.87 (1.1 to 3.32), therefore, no patient had a concept immune risk profile. Comparing the groups according to age, the presence of lymph node metastases, tumors smaller or higher than 2 cm, were no statistically significant differences. However, the CD4 / CD8 ratio in patients positive for human epidermal growth factor (HER-2 / neu) was higher than in samples of patients with hormone receptor positive carcinoma and Her-2 / neu negative (p = 0.036 ). As far as was possible to search, these are the first data on CD4+ and CD8 T+ cells specifically in a population with breast cancer. The increase in the number of CD4+/CD8+ current evidenced in these women with Her-2 carcinoma / neu positive, seems to signal an activation of the immune system in women with poor prognosis of tumors. / A popula??o de idosos ? hoje a que mais cresce no mundo. O sistema imune torna-se comprometido com a idade, sendo menos eficaz no combate a neoplasias malignas. Uma taxa alterada de c?lulas T CD8 positivo (CD8+), aumentada em rela??o ?s c?lulas CD4 positivo (CD4+) (normalmente mais freq?entes no sangue) define o conceito de perfil de risco imunol?gico no idoso (rela??o menor que 1). Nesta pesquisa, estudamos o perfil imunol?gico de 58 mulheres com c?ncer de mama, determinando a rela??o das c?lulas T CD4+/CD8+ no sangue perif?rico. Comparamos esta rela??o em grupos conforme a idade da paciente (menos ou mais que 60 anos), o comprometimento linfonodal, o tamanho do tumor, o perfil imunohistoqu?mico, e a ocorr?ncia de eventos adversos (recidiva local, axilar e met?stases). A propor??o de linf?citos T CD4+/CD8+ m?dia foi 1,87 (1,1 a 3,32), portanto, nenhuma paciente apresentou por conceito perfil imunol?gico de risco. Comparando os grupos conforme a idade, a presen?a de met?stases linfonodal, tumores menores verso maiores que 2cm n?o houveram diferen?as estatisticamente significativas. No entanto, a rela??o CD4+/CD8+ em pacientes positivos para o fator de crescimento epid?rmico humano (Her-2/neu) foi mais elevada do que em amostras de pacientes com carcinomas receptor hormonal positivos e Her-2/neu negativo (p=0,036). Tanto quanto foi poss?vel pesquisar, estes s?o os primeiros dados sobre c?lulas T CD4+ e CD8+ especificamente em uma popula??o com c?ncer de mama. O aumento do n?mero de linf?citos T CD4+/CD8+ circulante evidenciado nestas mulheres com carcinoma Her-2/neu positivo, parece sinalizar uma ativa??o do sistema imunol?gico em mulheres com tumores de pior progn?stico.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/6192 |
| Date | 02 March 2015 |
| Creators | Vollbrecht, Betina |
| Contributors | Frasson, Antonio |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Gerontologia Biom?dica, PUCRS, Brasil, Instituto de Geriatria e Gerontologia |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 4438661476953179033, 600, 600, 600, 2296420844541114010, -969369452308786627 |
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