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尿液前列腺癌基因-3在前列腺癌诊断中的临床价值 被引量:1

The Role of Prostate Cancer Gene-3 in Diagnosis for Prostate Cancer
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摘要 [目的]探讨尿液中前列腺癌基因-3(prostate cell antigen3,PCA3)对前列腺癌的诊断价值。[方法]收集119例前列腺癌(prostate cancer,PCa)患者和207例前列腺增生(benign prostatic hyperplasia,BPH)患者前列腺按摩后尿液,采用反转录聚合酶链反应技术,分析PCA3基因在PCa和BPH患者尿液中的表达情况,并与血中前列腺特异性抗原(prostate specific of antigen,PSA)进行应用价值的比较。[结果]尿PCA3 mRNA阳性104例,其中PCa100例、BPH4例。尿PCA3 mRNA诊断PCa的敏感度、特异性、准确率、阳性预测值(PPV)、阴性预测值(NPV)、阳性似然比(+LR)、阴性似然比(-LR)分别为84.03%、98.07%、92.94%、96.15%、91.44%、43.49、0.16;血PSA诊断PCa的检出率为48.92%(113/231),明显低于尿PCA3 mRNA诊断PCa的检出率96.15%(100/104),差异有统计学意义(P<0.01)。此外,PSA位于灰色区域4~10ng/ml77例,病理结果显示PCa8例,BPH69例,PCa检出率10.39%;尿PCA3 mRNA阳性7例,其中PCa6例、BPH1例,PCa检出率85.71%;尿PCA3 mRNA诊断PCa的敏感度和特异性分别为75.00%和98.55%。[结论]与血PSA相比,尿PCA3 mRNA诊断PCa敏感度稍低,但具有很好的特异性和阳性预测值,对于首次活检阴性而尿PCA3mRNA阳性的患者意义重大,提示可能需要重复穿刺活检。在PSA介于灰色区域4~10ng/ml时,穿刺结果阳性率较低(10.39%),尿PCA3 mRNA诊断PCa的特异性达98.55%,可协助判断是否需要穿刺活检。
出处 《中国肿瘤》 CAS 2013年第4期317-320,共4页 China Cancer
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