ABSTRACT
Objective To investigate the expressions of Livin protein and VEGF protein in bladder urothelial carcinoma(BUC) ,and theirs relationships with the clinicopathologic parameters of bladder urothelial carcinoma. Methods The expression of Livin and VEGF protein in 69 samples of BUC tissue and 10 samples of normal bladder epithelium tissue were detected by immunohistochemical SP method. Their relationships with clinicopathologic data were statistically analyzed. Results The positive expression rate of Livin and VEGF in BUC tissues were 65.2% (45/69) and 46.4% ( 32/69), but negative in normal bladder epithelium tissues, which showed significant differences in the comparison (Ps ＜ 0. 05 ). We found significant difference in the comparison of Livin positive rate between groups with or without recurrence ( 78. 8 % vs 48. 1%, χ2 = 6. 13, P ＜ 0. 05 ); but no differences in pathological grade,TNM stage and tumor number( Gl 55.6% ,G2 64. 3% ,G3 73.9% ;Ta ～ T1 61.9% ,T2 ～ T4 70. 4%; Single-tumor 59. 6%, multi-tumor 77.3%; χ2 = 1.52,0. 52,2.07, Ps ＞ 0. 05 ). For BUC,the expression of VEGF was correlated with the pathological grade,TNM stage( Gl 16. 7% ,G2 53.6% ,G3 60. 9%, χ2 = 8. 91; Ta ～ T1 33.3%, T2 ～ T4 66. 7%; χ2 = 7. 34; Ps ＜ 0. 05 ), but not the tumor number and recurrence( Single-tumor 57.4% , multi-tumor 59. 1%, χ2 = 0. 01; with recurrence 51.5% , without recurrence 40. 7% ,χ2= 0. 69; Ps ＞ 0. 05 ). We found no relationship between the expression of Livin and VEGF (r =0. 056,P ＞ 0. 05 ). Conclusion The overexpressions of Livin and VEGF protein may play an important role in the occurrence and development of BUC. Combind detection of these two protein can be used in the diagnosis and prognosis of BUC.