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  • Title: Expression and significance of beta-catenin, Glut-1 and PTEN in proliferative endometrium, endometrial intraepithelial neoplasia and endometrioid adenocarcinoma.
    Author: Xiong Y, Xiong YY, Zhou YF.
    Journal: Eur J Gynaecol Oncol; 2010; 31(2):160-4. PubMed ID: 20527231.
    Abstract:
    OBJECTIVE: The aim of this study was to explore the potentiality of beta-catenin, Glut-1 and PTEN proteins as markers for a diagnosis of endometrial intraepithelial neoplasia (EIN). DESIGN: Ten proliferative endometrium, 83 endometrial hyperplasia (59 benign hyperplasia, 24 EIN) and 24 endometrioid adenocarcinoma sections were immunostained for beta-catenin, Glut-1 and PTEN protein expression. RESULTS: (1) Abnormal expression of beta-catenin was detected in 10% of benign hyperplasia, 50% of EIN and 67% of endometriold adenocarcinoma. (2) Overexpression of Glut-1 was present in 58% of EIN and 71% of endometrioid adenocarcinoma. (3) Complete loss of PTEN immunoreactivity was found in 20% of proliferative endometrium, 29% of benign hyperplasia, 38% of EIN and 63% of endometrioid adenocarcinoma. CONCLUSIONS: The abnormal expression of beta-catenin and overexpression of Glut-1 may be useful markers in distinguishing benign hyperplasia from EIN, whereas lack of PTEN expression is not an appropriate marker for a diagnosis of EIN.
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