The clinical significance of Prothymosin-α protein expression in human bladder transitional cancer
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摘要: 研究前胸腺素α(PTMA)在膀胱移行细胞癌组织中的表达情况,并分析其与膀胱癌临床病理特征的关系。方法:选择96例膀胱移行细胞癌标本,10例癌旁正常膀胱组织标本。采用免疫组化检测膀胱癌和癌旁正常组织中PTMA蛋白的表达。癌标本中非肌层浸润性癌51例,肌层浸润性癌45例;单发肿瘤57例,多发肿瘤39例;G1 22例、G2 31例、G3 43例;非肌层浸润性癌中未复发29例,复发22例。结果:随病理分级和临床分期增加,PTMA相对表达量逐渐增高。G1、G2、G3膀胱癌PTMA蛋白表达阳性率分别为13.6%、32.3%,62.8%,均差异有统计学意义(P<0.05)。正常膀胱组织中无PTMA蛋白表达。非肌层浸润性肿瘤和肌层浸润性肿瘤中PTMA蛋白表达阳性率为37.3%和77.8%,差异有统计学意义(P=0.0002)。随访12~60个月,非肌层浸润性膀胱癌中,复发组与未复发组中PTMA蛋白高表达阳性率为68.2%和31.0%,差异有统计学意义(P<0.001))。结论:检测膀胱移行细胞癌组织中PTMA有助于膀胱癌的诊断及评估判断,PTMA蛋白高表达与膀胱尿路上皮癌的恶性程度及预后相关。Abstract: Objective: To explore the expression of Prothymosin-α (PTMA) in bladder transitional cell carcinoma and analyze its clinical significance and relationship with tumor recurrence. Methods: The expressions of PTMA protein in 96 specimens of bladder cancer and 10 specimens of normal bladder tissues were detected by immunohistochemical staining and its clinical significance was analyzed.Results: PTMA protein expression rates were 13.6%,32.3%,and 62.8% in G1,G2,and G3 tumors,respectively(P<0.05).PTMA protein expression was higher in muscle invasive bladder cancers than in non-muscle invasive bladder cancer (77.8% versus 37.3%,P=0.0002).The expression of PTMA protein was higher in bladder cancer than that in the adjacent normal tissues.In patients with non-muscle invasive bladder cancer,PTMA protein expression was significantly higher in patients with recurrence than in those without recurrence (68.2% versus 31.0%,P<0.001).Conclusions: The determination of PTMA protein expression is potentially valuable in diagnosis and prognostic evaluation for bladder transitional cell carcinoma.
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Key words:
- bladder transitional cell carcinoma /
- Prothymosin-α /
- recurrence
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