Folia Histochemica et Cytobiologica (Oct 2011)

Expression of COX-2 and Bcl-2 in primary fallopian tube carcinoma: correlations with clinicopathologic features

  • Xiu-Shan Zhang,
  • Ke Chen,
  • Jia-De Zhou,
  • Ji-Feng Wu,
  • Hong-Yang Wu,
  • Qiang Wu,
  • Yan-Feng Zou,
  • Guo-Ping Sun,
  • Fang Wang

DOI
https://doi.org/10.5603/9432
Journal volume & issue
Vol. 49, no. 3
pp. 389 – 397

Abstract

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The aim of this study was to evaluate the expression of COX-2 and Bcl-2 in primary fallopian tube carcinoma (PFTC), as well as their correlations with clinicopathologic features. We studied a cohort of 33 patients with a pathological diagnosis of PFTC. Thirty normal tubal tissues used for controls were obtained from patients diagnosed with uterine myomas. Expression analysis for COX-2 and Bcl-2 was performed using the immunohistochemical technique. The rate of preoperative diagnosis was 18.2%. With a median survival of 61.0 months (95% CI: 43.2 to 78.8 months), the estimated five-year overall survival rate in the 33 patients was 39.0%. Increased expression of COX-2 and Bcl-2 was observed in tumor specimens compared to normal controls (p = 0.026; p = 0.003). The expression rate of COX-2 in node-positive tumors was significantly higher than that of node-negative tumors (p = 0.024). Moreover, the expression rate of COX-2 was statistically significantly higher in patients with infiltration through the serosa (p = 0.019). Positive significant associations were observed between Bcl-2 staining index and FIGO stage (p = 0.015), and between Bcl-2 staining and lymph node metastasis (p = 0.010). There was a significant correlation between COX-2 expression and Bcl-2 staining index (r = 0.517, p = 0.002). We conclude that COX-2 and Bcl-2 may potentially be useful prognostic markers for PFTC. The exact molecular mechanism for correlations between COX-2 and Bcl-2 remains to be elucidated. (<i>Folia Histochemica et Cytobiologica 2011, Vol. 49, No. 3, 389&#8211;397</i>)

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