Expression of epidermal growth factor family proteins and epidermal growth factor receptor in human endometrium

Human Pathology
H NiikuraA Yajima

Abstract

The biological significance of epidermal growth factor (EGF)-related proteins in the development and progression of endometrioid endometrial carcinoma was studied. Expression of EGF-related proteins including EGF, transforming growth factor-alpha (TGF-alpha), cripto (CR), amphiregulin (AR), and EGF receptor (EGFR) were immunohistochemically examined. Results were then correlated with clinicopathologic findings and steroid receptor status in 12 specimens with normal endometrium, 13 with endometrial hyperplasia, and 40 with endometrioid endometrial carcinoma. EGFR, EGF, TGF-alpha, and CR immunoreactivities were observed in 58.3%, 66.7%, 91.6%, and 66.7% of normal endometrial specimens; 100%, 15.4%, 100%, and 30.8% of endometrial hyperplasia specimens; and 67.5%, 32.5%, 65.0%, and 65.0% of endometrial carcinoma specimens, respectively. AR immunoreactivity was not observed in any of the normal, hyperplastic, or neoplastic endometrium. The presence or absence of EGFR or TGF-alpha in endometrial carcinoma correlated with surgical stage, depth of myometrial invasion, and findings from peritoneal washing cytology. EGF expression significantly correlated with the age of the patients and that of CR with surgical stage and peritoneal wash...Continue Reading

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