Avaliação de quimiocinas séricas em mulheres com câncer epitelial de ovário
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Data
2008-08-04
Autores
Falcão Júnior, João Oscar de Almeida [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O sistema imune, por meio da coordenação do funcionamento de várias células e proteínas, além de proteger contra infecções, atua na resposta do organismo contra células neoplásicas. As quimiocinas associam-se à modulação da resposta imune e apresentam importante papel na mediação do tráfego celular. O objetivo deste estudo é avaliar as quimiocinas, CCL2/MCP-1, CCL3/ MIP-1α, CCL4/MIP-1β, CCL5/RANTES e CXCL 8/IL-8 em mulheres com câncer epitelial de ovário (CEO). Métodos: Foram estudadas prospectivamente 16 pacientes com CEO e 18 pacientes sadias sem evidências de neoplasias malignas (grupo controle). As pacientes com CEO foram submetidas à laparotomia para citoredução. As dosagens das quimiocinas foram realizadas por meio da técnica de ensaio citofluorométrico com microesferas fluorescentes - Cytometric bead array (CBA) Foram utilizados os teste de Mann-Whitney e Kendall’s tau quando apropriados, sendo o valor de p<0,05 considerado significativo. Resultados: A idade das pacientes variou de 23 a 89 anos (58,7 + 2,3 anos). O estadiamento do tumor (FIGO) foi I em 4 casos (25%), III em 5 casos (31,3%) e estádio IV em 7 casos (43,8%). As dosagens séricas de CCL2/MCP-1 e CCL4/MIP-1β foram menores nas pacientes com CEO em comparação com o grupo controle (p=0,021 e p=0,031; respectivamente). Não houve diferença entre os grupos nos níveis de CCL3/ MIP-1α, CCL5/RANTES e CXCL 8/IL-8. O estadiamento tumoral não se associou com os níveis séricos das quimiocinas. A dosagem sérica de CA-125 não apresentou correlação com as quimiocinas estudadas. A resposta imune pode estar associada ao estabelecimento/manutenção do CEO e o estudo das quimiocinas pode ser um mecanismo para esta avaliação.
The dynamics of the host immune system enables defense against pathogenic agents and neoplasic cells through a wide range of mechanisms. Because chemokines are responsible for modulating the immune response in leukocyte migration processes to epithelial ovarian cancer (EOC)- affected tissues, we aimed to investigate CCL2/MCP-1, CCL3/ MIP-1 , CCL4/MIP-1 , CCL5/RANTES and CXCL 8/IL-8 in women with EOC. Methods: Sixteen patients diagnosed with EOC and 18 healthy women with no evidence of malign neoplasia (control group) aged from 23 to 89 years (mean SEM: 58.7+2.3 years) were included. The EOC patients underwent laparotomy and debulking surgery. Chemokines dosage assays were made using Cytometric bead array (CBA). Statistical analysis was performed using Mann-Whitney and Kendall’s tau, and p<0.05 was regarded as significant. Results: The tumor staging (FIGO) was classified into: I in 4 cases (25%), III in 5 cases (31.3%) and stage IV in 7 cases (43.8%). Sera chemokine dosage of CCL2/MCP-1 and CCL4/MIP-1 were lower in EOC patients compared to the control group (p=0,021 and p=0,031; respectively). No significant difference was observed in the levels of CCL3/ MIP-1 , CCL5/RANTES and CXCL 8/IL-8 between groups. No association between the chemokines analyzed and the epithelial ovarian cancer staging was found, and CA125 was not correlated with chemokine dosage. Conclusion: The establishment of epithelial ovarian cancer may be correlated with the host immune response dynamics, and the study of chemokines could be regarded as a valid diagnostic tool for evaluating the extent of the disease.
The dynamics of the host immune system enables defense against pathogenic agents and neoplasic cells through a wide range of mechanisms. Because chemokines are responsible for modulating the immune response in leukocyte migration processes to epithelial ovarian cancer (EOC)- affected tissues, we aimed to investigate CCL2/MCP-1, CCL3/ MIP-1 , CCL4/MIP-1 , CCL5/RANTES and CXCL 8/IL-8 in women with EOC. Methods: Sixteen patients diagnosed with EOC and 18 healthy women with no evidence of malign neoplasia (control group) aged from 23 to 89 years (mean SEM: 58.7+2.3 years) were included. The EOC patients underwent laparotomy and debulking surgery. Chemokines dosage assays were made using Cytometric bead array (CBA). Statistical analysis was performed using Mann-Whitney and Kendall’s tau, and p<0.05 was regarded as significant. Results: The tumor staging (FIGO) was classified into: I in 4 cases (25%), III in 5 cases (31.3%) and stage IV in 7 cases (43.8%). Sera chemokine dosage of CCL2/MCP-1 and CCL4/MIP-1 were lower in EOC patients compared to the control group (p=0,021 and p=0,031; respectively). No significant difference was observed in the levels of CCL3/ MIP-1 , CCL5/RANTES and CXCL 8/IL-8 between groups. No association between the chemokines analyzed and the epithelial ovarian cancer staging was found, and CA125 was not correlated with chemokine dosage. Conclusion: The establishment of epithelial ovarian cancer may be correlated with the host immune response dynamics, and the study of chemokines could be regarded as a valid diagnostic tool for evaluating the extent of the disease.
Descrição
Palavras-chave
Ovarios - Câncer, Quimiocinas
Como citar
FALCÃO JÚNIOR, João Oscar de Almeida. Avaliação de quimiocinas séricas em mulheres com câncer epitelial de ovário. 2008. 73 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, 2008.