Expression of the vascular endothelial growth factor receptor-2/Fik-1 in breast carcinomas: Correlation with proliferation

δείτε την πρωτότυπη σελίδα τεκμηρίου
στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*



Expression of the vascular endothelial growth factor receptor-2/Fik-1 in breast carcinomas: Correlation with proliferation (EN)

Panayotopoulou, E (EN)
Athanassiadou, P (EN)
Louvrou, A (EN)
Nakopoulou, L (EN)
Stefanaki, K (EN)
Giannopoulou, I (EN)
Gakiopoulou-Givalou, H (EN)

journalArticle (EN)

2014-03-01T01:52:05Z
2002 (EN)


Vascular endothelial growth factor (VEGF) and its receptor Flk-1/KDR play an important role in vascular permeability and tumor angiogenesis. Prompted by the hypothesis that VEGF/Flk-1 system may have regulatory roles in breast carcinogenesis, we investigated the expression of Flk-1 in 141 invasive breast carcinomas in correlation with clinical and immunohistochemical prognostic parameters, including proliferation indices like Ki-67 and Topoisomerase Ha (Topo-Ha). The immunohistochemical avidin-biotin-peroxidase method was performed on paraffin sections for the detection of Flk-1, p53, Bcl-2, c-erbB-2, M-67, Topo-Ha, ER, and PR. Flk-1 was detected in 91 of 141 (64.5%) of invasive breast carcinomas showing a widespread cytoplasmic expression in most of the neoplastic cells. Flk-1 expression was correlated with the menopausal status (P = 0.051) of the patient and the nuclear grade of the invasive breast carcinoma (P = 0.003), but demonstrated no correlation with histologic grade, stage, and patient survival. It is interesting that Flk-1 expression demonstrated a significant correlation with 2 well-established proliferation indices, Ki-67 (P = 0.037) and topo-IIalpha (P = 0.009), whereas there was no correlation with the expression of ER, PR, p53, Bcl-2, and c-erbB-2. Moreover, Flk-1 expression showed an inverse correlation with TIMP-I mRNA localization in intratumoral stromal cells (P = 0.013). In conclusion, the significant correlation of Flk-1 expression in invasive breast carcinomas with proliferation indices like Ki-67 and topo-IIa suggests that VEGF may exert a growth factor activity on mammary cancer cells through its receptor Flk-1. On the other hand, the inverse correlation of Flk-1 with TIMP-1 mRNA in intratumoral stromal cells supports the notion that TIMP-1 may have an inhibitory role on angiogenesis. Copyright 2002, Elsevier Science (USA). All rights reserved. (EN)

Pathology (EN)

FACTOR VEGF (EN)
fetal liver kinase (Flk-1)/KDR (EN)
proliferation (EN)
VASCULOGENESIS (EN)
breast cancer (EN)
ANTIBODY (EN)
TUMOR ANGIOGENESIS (EN)
CANCER (EN)
IN-VIVO (EN)
FLK-1 (EN)
TISSUE INHIBITOR (EN)
MELANOMA-CELLS (EN)
RECEPTORS (EN)

HUMAN PATHOLOGY (EN)

Αγγλική γλώσσα

W B SAUNDERS CO (EN)




*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.