Archives of Gynecology and Obstetrics

, Volume 284, Issue 6, pp 1515–1521 | Cite as

Effects of a selective COX-2 inhibitor in patients with uterine endometrial cancers

  • Kiyoshi Hasegawa
  • Yutaka Torii
  • Risa Ishii
  • Shuko Oe
  • Rina Kato
  • Yasuhiro Udagawa
Gynecologic Oncology

Abstract

Purpose

COX-2 is highly expressed in endometrial cancers, suggesting that a selective COX-2 inhibitor could be valuable for treating endometrial cancers that overexpress COX-2. In this study, we investigated the anti-tumor effects of the selective COX-2 inhibitor etodolac on endometrial cancer patients.

Methods

Etodolac (400 mg, bid, for 2 weeks) was administered preoperatively to 21 endometrial cancer patients who had provided informed consent. Using pre-treatment biopsies and post-treatment surgical specimens, the expression levels of COX-2, Ki-67, p53, p21, p27, and cyclin D1 were evaluated by immunohistochemistry and the apoptotic index (AI) was determined by TUNEL staining. Preoperative biopsies and surgical specimens from 32 patients with endometrial cancer not treated with etodolac served as controls.

Results

Surgical specimens from COX-2 positive endometrial cancer patients treated with etodolac had significantly reduced expression levels of COX-2, Ki-67, p53, p21, p27, and cyclin D1 as determined by immunohistochemistry, while AI was not affected. These markers were unchanged for COX-2 negative endometrial cancer patients treated with etodolac and the control group.

Conclusions

The selective COX-2 inhibitor etodolac showed anti-proliferative effects by suppressing COX-2 and cell-cycle regulator protein expression in patients with endometrial cancer positive for COX-2 expression. This study demonstrates that a selective COX-2 inhibitor is a potentially beneficial treatment for COX-2 positive endometrial cancers.

Keywords

Endometrial cancer COX-2 COX-2 inhibitor Immunohistochemistry Cell-cycle regulator proteins 

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Kiyoshi Hasegawa
    • 1
  • Yutaka Torii
    • 1
  • Risa Ishii
    • 1
  • Shuko Oe
    • 1
  • Rina Kato
    • 1
  • Yasuhiro Udagawa
    • 1
  1. 1.Department of Obstetrics and GynecologyFujita Health University School of MedicineToyoakeJapan

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