HOME CURRENT ISSUE TABLE OF CONTENTS ARCHIVE SEARCH SUBSCRIPTIONS JOBS FEEDBACK HELP		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Millanta, F. Articles by Poli, A. Search for Related Content PubMed PubMed Citation Articles by Millanta, F. Articles by Poli, A.

Steroid hormone receptors in normal, dysplastic and neoplastic feline mammary tissues and their prognostic significance

¹ Department of Animal Pathology, University of Pisa, Viale delle Piagge 2, I-56124 Pisa, Italy
² Clinical Department, School of Veterinary Medicine, University of Pisa, Viale delle Piagge 2, I-56124 Pisa, Italy

The expression of oestrogen- and progesterone receptors was determined in 13 normal, 21 dysplastic and 53 neoplastic feline mammary tissues. Expression of the receptors was correlated with cell proliferation, as assessed by the MIB-1 immunolabelling index, and with the clinical course of the disease. The expression of oestrogen receptors was significantly higher in healthy tissues and in adenosis than in neoplastic lesions, and the levels of progesterone receptors increased in fibroadenomatous changes and in `in situ' carcinomas but decreased in invasive carcinomas. The oestrogen and progesterone receptor status of the invasive carcinomas did not correlate either with the histological parameters or with the overall survival of the cats, although the oestrogen receptor-negative tumours had a poor prognosis. Oestrogen receptor-positive neoplasms had a significantly lower MIB-1 immunolabelling index than oestrogen receptor-negative neoplasms.