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BioMed Research International
Volume 2014, Article ID 178410, 8 pages
http://dx.doi.org/10.1155/2014/178410
Research Article

Metadherin, p50, and p65 Expression in Epithelial Ovarian Neoplasms: An Immunohistochemical Study

1Department of Anatomy, School of Medicine, University of Patras, 26500 Patras, Greece
2Department of Medical Oncology, Imperial College, London W6 8RF, UK
3Department of Pathology, “Agios Andreas” Hospital, 26335 Patras, Greece
4Department of Pathology, Elena Venizelou Hospital, 11521 Athens, Greece

Received 23 February 2014; Revised 8 May 2014; Accepted 10 May 2014; Published 22 May 2014

Academic Editor: Alfredo Conti

Copyright © 2014 Ioanna Giopanou et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

NF-κB signaling promotes cancer progression in a large number of malignancies. Metadherin, a coactivator of the NF-κB transcription complex, was recently identified to regulate different signaling pathways that are closely related to cancer. We assessed the immunohistochemical expression of p50, p65, and metadherin in 30 ovarian carcinomas, 15 borderline ovarian tumours, and 31 benign ovarian cystadenomas. Ovarian carcinomas exhibited significantly higher expression of all 3 markers compared to benign ovarian tumours. Borderline ovarian tumours demonstrated significantly higher expression for all 3 markers compared to benign cystadenomas. Ovarian carcinomas demonstrated significantly higher expression of p50 and metadherin compared to borderline ovarian tumours, whereas no significant difference was noted in p65 expression between ovarian carcinomas and borderline ovarian tumours. There was a strong correlation with the expression levels of p50, p65, and metadherin, whereas no correlation was observed with either grade or stage. Strong p50, p65, and metadherin expression was associated with a high probability to distinguish ovarian carcinomas over borderline and benign ovarian tumours, as well as borderline ovarian tumours over benign ovarian neoplasms. A gradual increase in the expression of these molecules is noted when moving across the spectrum of ovarian carcinogenesis, from borderline ovarian tumours to epithelial carcinomas.