Home Neoplasma 2006 Neoplasma Vol.53, p.538-543, 2006

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

Published in English

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Neoplasma Vol.53, p.538-543, 2006

Title: Soluble VCAM-1 and E-selectin in breast cancer: relationship with staging and with the detection of circulating cancer cells
Author: H.C. SILVA, F. GARCAO, E.C. COUTINHO, C.F. DE OLIVEIRA, F.J. REGATEIRO

Abstract: In breast cancer, the correct evaluation of cancer dissemination is essential to establish prognosis and treatment choices. This study analyses the relationship between circulating levels of soluble VCAM-1 and E-selectin and the presence of circulating cancer cells in breast cancer patients. Plasma levels of VCAM-1 and E-selectin were measured by enzyme-linked immunosorbent assay (ELISA). The presence of circulating cancer cells was diagnosed using a RT nested-PCR assay detecting the cancer specific transcript, epidermal growth factor receptor variant III (EGFRvIII) mRNA. Blood samples were collected from 64 patients divided in three groups: group A of 11 women selected for neoadjuvant chemotherapy; group B of 13 women with metastatic disease and group C, with 40 women having completed their treatment at least one year ago and with no evidence of relapse. The mutant transcript was detected in 45.5% of patients from group A, in 61.5% of patients from group B and in none of the group C patients. For both VCAM-1 and E-selectin, plasma levels increased with disease staging and with the presence of EGFRvIII mRNAin peripheral blood. The differences were statistically significant (p<0.025) when group C was compared with all patients from group B, with patients from group B with EGFRvIII positive results or with all patients with EGFRvIII positive results. Increased plasma levels of VCAM-1 and E-selectin are associated with advanced stage of breast cancer and with the presence of circulating cancer cells. The combined analysis of these parameters may contribute to a more accurate evaluation of cancer dissemination.

Keywords: breast cancer, VCAM-1, E-selectin, EGFRvIII, occult disseminated disease
Year: 2006, Volume: 53, Issue: Page From: 538, Page To: 543

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