E-CD和p16在膀胱移行细胞癌组织中的表达及其临床意义

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

目的 探讨E-CD和p16在人膀胱移行细胞癌中的表达及其意义.方法 采用免疫组织化学方法检测50例膀胱移行细胞癌和10例正常膀胱组织中的E-CD和p16蛋白的表达.结果 E-CD和p16在膀胱癌中阳性表达率分别为44.0%及54.0%.病理分级：E-CD在Ⅰ、Ⅱ、Ⅲ级膀胱癌中阳性表达率分别为68.7%、57.7%、25.0%,p16为75.0%、53.8%、12.5%,差异均有统计学意义（P＜0.05）;肿瘤侵袭程度：E-CD及p16在非浸润型膀胱癌中阳性表达率分别为72.7%和68.2%,在浸润型膀胱癌中为42.9%和42.8%,均有不同程度的降低;肿瘤转移：E-CD与p16在无淋巴结转移组阳性表达率为69.4%与63.9%,在淋巴结转移组分别降低至21.4%与28.6%,差异有统计学意义（P＜0.05）.结论 E-CD和p16均在膀胱移行细胞癌的发生发展过程中起重要作用,且可能与肿瘤的恶性程度及预后有关.

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.