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Immunohistochemical Expression of p53, MDM2, and p21Wafi Oncoproteins in Endometriomas But Not AdenomyosisDepartment of Obstetncs and Gynecology, University Hospital of Heraklion, Crete; Department of Pathology and Department of Hygiene and Epidemiology, University of Athens, Athens, Greece; Division of Reproductive Endocnnology and Infertility, Department of Obstetnrcs and Gynecology, Dartmouth Medical School, Lebanon, New Hampshire; Department of Obstetncs and Gynecology, Yale University School of Medicine, New Haven, Connecticut
Department of Obstetncs and Gynecology, Yale University School of Medicine, New Haven, Connecticut; Department of Obstetrics and Gynecology, Dartmouth Medical School, One Medical Center Dr., Lebanon, NH 03756; Neal.G.Mahutte{at}Hitchcock.org
Department of Obstetncs and Gynecology, University Hospital of Heraklion, Crete; Department of Pathology and Department of Hygiene and Epidemiology, University of Athens, Athens, Greece; Division of Reproductive Endocnnology and Infertility, Department of Obstetnrcs and Gynecology, Dartmouth Medical School, Lebanon, New Hampshire; Department of Obstetncs and Gynecology, Yale University School of Medicine, New Haven, Connecticut Objective: p53, MDM2, and p21Wafi are oncoproteins that regulate the cell cycle. The purpose of this study was to examine the distribution ofp53, MDM2, and p21 Wafl oncoprotein expression in endometriomas and in adenomyosis. Methods: Tissue samples from 25 women with pathologically confirmed endometriomas and 31 women with pathologically confirmed adenomyosis were analyzed. Expression of p53, MDM2, and p21Waf1 oncoproteins was assessed by immunohistochemical nuclear staining. Results: p53, MDM2, and p21Waf1 expression were detected in 20%, 60%, and 80% of endometrioma tissue samples, respectively. All endometrioma tissue samples expressing p53 also tested positive for both MDM2 and p21Waf1 MDM2 expression was signnficantly higher in the proliferative than in the secretory phase of the cycle. In contrast,all 31 adenomyosis tissue samples were negativeforp53, MDM2, and p21 Wafl expression. Conclusion: The expression of p53, MDM2, and p2JWaf1 suggests a role for these oncoproteins in the regulation of endometrioma cell growth, but not in adenomyosis.
Key Words: Adenomyosis endometriosis immunohistochemistry oncoprotein
Journal of the Society for Gynecologic Investigation, Vol. 12, No. 4,
263-266 (2005) |
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