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Low Microsomal Epoxide Hydrolase Expression is Associated with Bladder Carcinogenesis and Recurrence

  • Zhang, Zhe (Department of Urology, The First Hospital of China Medical University) ;
  • Yu, Xiu-Yue (Department of Urology, The First Hospital of China Medical University) ;
  • Zhang, Guo-Jun (Department of Hematology, Shengjing Hospital of China Medical University) ;
  • Guo, Kun-Feng (Department of Urology, The First Hospital of China Medical University) ;
  • Kong, Chui-Ze (Department of Urology, The First Hospital of China Medical University)
  • Published : 2012.02.29

Abstract

Microsomal epoxide hydrolase (mEH) plays a significant role in the metabolism of numerous xenobiotics and is associated with several forms of cancer. Here, we investigated the role of mEH expression in bladder carcinogenesis, subsequent progression and recurrence. The expression of mEH was analyzed by Western blot in 50 bladder urothelial carcinoma and 20 normal epithelial tissues. There was a significantly higher mEH expression in the normal epithelium (P<0.05) and mEH expression was lower in high stage than in low stage tumors (P<0.05). Further, immunohistochmistry in 106 bladder urothelial carcinoma demonstrated mEH expression to be negatively correlated with histological grade, pT stage and recurrence (P<0.05). These findings suggest the important role of mEH in bladder carcinogenesis, cancer development and recurrence, providing support for efforts to develop mEH-based gene therapy.

Keywords

mEH;bladder carcinoma;histopathological grade;clinical stage;recurrence

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