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Erythropoietin receptor expression in canine mammary tumor: an immunohistochemical study.

Abstract
Erythropoietin (EPO) is a cytokine primarily involved in the regulation of the erythropoiesis. Recently, it has been demonstrated that EPO and its receptor (EPOR) are expressed in several neoplastic cell lines and solid tumors. Furthermore, in vitro and in vivo studies have shown that EPO could promote human breast carcinoma growth by means of the binding with its receptor, although a clear function for EPO in this setting has not been yet established. While the human medical literature has been accumulating strong evidence on EPO's role in oncogenesis, to date, there are no veterinary reports focusing on such an issue. The aim of the present study was to investigate the immunohistochemical expression of EPOR in canine mammary gland dysplastic and neoplastic lesions. Our results show a weak to moderate EPOR expression in dysplastic glands, being immunoreactivity enhanced as the lesion shows an increasing malignant pattern. On the basis of these findings, this study describes, for the first time, the evidence for EPOR expression in canine mammary gland tumor and suggests a feasible EPO's role for canine mammary tumor progression.
AuthorsA Sfacteria, G Mazzullo, C Bertani, P Calabrò, G De Vico, B Macrì
JournalVeterinary pathology (Vet Pathol) Vol. 42 Issue 6 Pg. 837-40 (Nov 2005) ISSN: 0300-9858 [Print] United States
PMID16301583 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Receptors, Erythropoietin
Topics
  • Animals
  • Dog Diseases (metabolism)
  • Dogs
  • Female
  • Gene Expression Regulation, Neoplastic
  • Immunohistochemistry (veterinary)
  • Mammary Neoplasms, Animal (metabolism)
  • Receptors, Erythropoietin (metabolism)

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