The expression and significance of E-CD and p16 in transitional cell carcinoma of bladder

Abstract

Objective To investigate the expression of E-CD and p16 in transitional cell carcinoma (TCC) of bladder and the implication. Methods The expression of E-CD and p16 was detected in 50cases of TCC and 10 cases of normal bladder tissue by immunohistochemical technique. Results The positive expression rate of E-CD and p16 in nomal bladder tissue ( 100% ) was significantly higher than that in the TCC (44. 0% and 54. 0% ). The positive expression rate of E-CD in the TCC of grades Ⅰ , Ⅱ, Ⅲ was 68.7%, 57.7% and 25.0%, and that of p16 was 75.0%, 53. 8%, 12. 5%, respectively. The positive expression rate of E-CD and p16 in non-muscle invasive TCC (Tis-T1) was 72.7% and 68. 2%, and that in muscle invasive TCC was 42. 9% and 42. 8% respectively. The positive expression rate of E-CD and p16 in no-lymphatic metastasis was 69. 4% and 63.9%, and that in lympathic metastasis was significantly reduced to 21.4% and 28. 6%. Conclusion E-CD and p16 play an important role in the pathogenesis and development of the TCC and they are helpful to predicting the prognosis of the patients with TCC. Key words: Transitional cell carcinoma of bladder; E-CD; p16