膀胱尿路上皮癌组织中Livin和血管内皮生长因子蛋白的表达及其相关性研究

目的 探讨膀胱尿路上皮癌组织中凋亡抑制因子Livin和血管内皮生长因子(VEGF)蛋白的表达与临床病理参数的关系及其相关性.方法 采用免疫组织化学S-P法检测69例膀胱尿路上皮癌和10例正常膀胱黏膜组织中Livin和VEGF蛋白的表达状况,结合临床病理学资料进行统计学分析.结果 Livin和VEGF蛋白在膀胱尿路上皮癌组织的阳性表达率分别为65.2%(45/69)和46.4%(32/69),而正常膀胱黏膜组织中均不表达(均为0.0%),组间比较差异有统计学意义(P均＜0.01).在有、无复发组的膀胱尿路上皮癌组织中Livin蛋白的阳性表达率差异有统计学意义[有复发78.8%(26/33),无复发48.1%(13/27),χ2=6.13,P＜0.05],而在不同病理分级组、不同临床分期组及肿瘤单、多发组的膀胱尿路上皮癌组织中Livin蛋白的阳性表达率差异均无统计学意义(G1 55.6%,G2 64.3%,G3 73.9%;Ta～T1 61.9%,T2～T4 70.4%;单发59.6%,多发77.3%;χ2值分别为1.52、0.52、2.07,P均＞0.05).在不同病理分级组和不同临床分期组的膀胱尿路上皮癌组织中VEGF蛋白的阳性表达率差异均有统计学意义(G116.7%,G2 53.6%,G3 60.9%;Ta～T1 33.3%,T2～T4 66.7%;χ2值分别为8.91、7.34,P＜0.05或P＜0.01),而在肿瘤单、多发组和有、无复发组的膀胱尿路上皮癌组织中VEGF蛋白的阳性表达率差异均无统计学意义(单发46.8%,多发45.5%;有复发51.5%,无复发40.7%,χ2值分别为0.01、0.69,P均＞0.05).膀胱尿路上皮癌组织中Livin与VEGF蛋白的表达无相关关系(r=0.056,P＞0.05).结论 Livin和VEGF蛋白的高表达可能在膀胱尿路上皮癌的发生过程中起重要作用.联合检测二者的变化有望成为膀胱尿路上皮癌诊断和判断预后的一项客观指标.

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.

Study of expression and clinical significance of Livin and VEGF protein in bladder urothelial carcinoma

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.