荧光原位杂交技术在膀胱移行细胞癌诊断中的应用

目的 应用荧光原位杂交技术对膀胱癌患者尿液中脱落细胞染色体基因异常做出判断,从而探究其在诊断膀胱癌中的应用价值,为膀胱癌患者寻求一种无创的诊断膀胱癌的新方法.方法 应用荧光标记的3、7、17号染色体着丝粒探针及定位于p16基因的探针检测膀胱癌患者尿液中脱落细胞的染色体基因变化,从而对膀胱癌作出诊断,同时将FISH诊断膀胱移行细胞癌敏感性与尿细胞学结果进行比较.结果 FISH和尿细胞学诊断膀胱癌的总敏感性分别为85.5%和34.2%.FISH诊断膀胱癌的总敏感性高于尿细胞学(P<0.05).在肿瘤的各种分期分级中,FISH诊断膀胱癌的敏感性也高于尿细胞学.且FISH敏感性随肿瘤病理级别的增高而增高(P<0.05),但不随肿瘤临床分期的增高而增高(P＞0.05).结论 FISH对于膀胱移行细胞癌的诊断有较高的敏感性,有可能成为在中国人群中检测膀胱移行上皮癌的有效手段.

Fluorescence in situ hybridization for detection of bladder cancer

Objective To asses the value of fluorescence in situ hybridization (FISH) in diagnosis of transitional cell carcinoma of bladder in the urine using directly labeled DNA probes to the pericentromeric regions of chromosomes 3 , 7 and 17 and to the region of P16 tumor suppressor gene. Methods Chromosomal and gene abnormalities were detected using directly labeled DNA probes to the pericentromeric regions of chromosomes 3 , 7, and 17 and to the region of P16 tumor suppressor gene. The sensitivity of FISH and Cytology in diagnosing transitional cell carcinoma of bladder was also compared. Results The sensitivity of FISH and Cytology in diagnosing the disease was 85.5% and 34.2%, respectively. The sensitivity of FISH was prior to that of Cytology( P ＜0.05 ) and increased with increasing tumor pathologic grade but not clinical staging. Conclusions High sensitivity of FISH in diagnosing transitional cell carcinoma of bladder was obtained and it might be a potent method to diagnose bladder cancer in Chinese people in the future.