Home Neoplasma 2012 Neoplasma Vol.59, No.5, p.475-485, 2012

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Founded: 1954
ISSN 0028-2685
ISSN 1338-4317 (online)

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Neoplasma Vol.59, No.5, p.475-485, 2012

Title: The clinicopathological significance of Bax and Bcl-2 protein expression with tumor infiltrating lymphocytes in ovarian carcinoma
Author: S. YIGIT, L. DEMIR, M. O. TARHAN, F. K. CABUK, H. ELLIDOKUZ, C. ERTEN, I. SOMALI, A. DIRICAN, F. CAKALAGAOGLU

Abstract: The aim of the study was to establish the prognostic and predictive value of Bax and Bcl-2 proteins in conjunction with the host immune response in primary epithelial ovarian carcinoma.
83 patients were evaluated. Immunohistochemical staining was performed using anti-Bcl-2 (Dako; clone 124) and anti-Bax (Springbio; E17994) monoclonal antibodies. Additionally, the number of lymphocytes within tumor stroma lymphocyte nests were counted.
Bcl-2 protein expression was lower in advanced stage than early stage (p= 0.005). High (H) Bax expression was associated with longer overall survival (OS) than lower (L) Bax expression (p=0.03). The OS of the (L) Bax/(L) Bcl-2 group was shorter than (H) Bax/(L) Bcl-2 group in advanced stage (p=0.05). The platinum-sensitive group had a statistically significant tendency for high Bax expression (p=0.04). Furthermore, the intensity of the lymphocyte infiltration was associated with tumor differentiation (p= 0.003).
Our data suggests that (H) Bax protein expression prolongs survival, predicts platinum sensitivity and can be used after confirmation of this hypothesis in further prospective studies. The combined evaluation of Bax and Bcl-2 protein expression may provide additional significant prognostic information. The quantity of lymphocyte infiltration could be important for prognostic outcome.

Keywords: Bax, Bcl-2, ovarian cancer, platinum sensitivity, lymphocyte infiltrate
Published online: 04-Jun-2012
Year: 2012, Volume: 59, Issue: 5 Page From: 475, Page To: 485
doi:10.4149/neo_2012_061
Price: 23.10 €






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