Low microsomal epoxide hydrolase expression is associated with bladder carcinogenesis and recurrence

Area of Science:

• Biochemistry and Molecular Biology
• Oncology
• Urology

Background:

• Microsomal epoxide hydrolase (mEH) is crucial for metabolizing xenobiotics.
• mEH involvement is linked to various cancer types.
• The role of mEH in bladder cancer development and progression requires further elucidation.

Purpose of the Study:

• To investigate the expression patterns of mEH in bladder cancer.
• To determine the correlation between mEH expression and clinicopathological features, including tumor stage, grade, and recurrence.
• To assess the potential of mEH as a therapeutic target in bladder cancer.

Main Methods:

• Western blot analysis of mEH expression in 50 bladder urothelial carcinoma tissues and 20 normal epithelial tissues.
• Immunohistochemistry analysis of mEH expression in 106 bladder urothelial carcinoma tissues.
• Statistical analysis to correlate mEH expression with tumor stage, histological grade, and recurrence.

Main Results:

• Significantly higher mEH expression was observed in normal bladder epithelium compared to tumor tissues (P<0.05).
• mEH expression was significantly lower in high-stage bladder tumors than in low-stage tumors (P<0.05).
• mEH expression showed a negative correlation with histological grade, pT stage, and recurrence (P<0.05).

Conclusions:

• mEH expression is significantly reduced in bladder cancer, particularly in advanced stages.
• Decreased mEH expression is associated with increased tumor aggressiveness and higher recurrence rates.
• These findings highlight mEH's role in bladder carcinogenesis and support the development of mEH-based gene therapies.