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结合型PSA及其与总PSA的比值在前列腺癌诊断中的应用评价 被引量:2

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摘要 目的对结合型前列腺特异性抗原(c-PSA)及c-PSA/t-PSA(总PSA)在前列腺癌(PCa)临床检测中的应用价值进行评价。方法采用回顾性研究,300例非连续性病例,前列腺穿刺活检证实其中57例为PCa,78例为良性前列腺增生(BPH),165例为正常。均在活检前留取血清标本,使用ACS180化学发光仪检测总前列腺特异性抗原(t-PSA)和c-PSA,计算c-PSA/t-PSA比值。用ROC曲线进行评价,选取合适的临界点,计算和比较相关的敏感性和特异性。结果PCa组c-PSA和t-PSA均高于BPH组和正常组。ROC曲线下面积以c-PSA最大,其次为t-PSA和c-PSA/t-PSA比值,分别为0.956、0.938和0.912。在保持95%敏感性时,t-PSA、c-PSA和c-PSA/t-PSA比值的特异性分别为35.0%、45.6%和46.0%。但若就PCa和BPH鉴别而言,ROC曲线下面积以c-PSA/t-PSA最大。结论用c-PSA和c-PSA/t-PSA比值作为PCa的检测指标优于单独使用t-PSA,在保持敏感性的同时可提高PCa检测的特异性。
出处 《临床检验杂志》 CAS CSCD 北大核心 2005年第5期365-366,共2页 Chinese Journal of Clinical Laboratory Science
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