血清循环IGF-1与CEA联合检测对结直肠癌诊断价值

Chinese Journal of Cancer Prevention and Treatment(2018)

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Abstract
目的 肿瘤患者体内循环胰岛素样生长因子-1 (insulin like growth factor-1,IGF-1)水平升高可能成为潜在筛查结直肠癌(colorectal cancer,CRC)的标志物.本研究探讨血清循环IGF-1与癌胚抗原(carcinoembryonic antigem,CEA)联合检测对诊断CRC的临床价值,以期为CRC诊断提供一种潜在鉴别方法 .方法 收集2012-03-07-2015-11-28天津市人民医院检验科检测的367例CRC合并2型糖尿病(type 2 diabete mellitus,T2DM)患者(合并组)、367例单纯CRC患者(单纯CRC组)及334名年龄、性别相匹配的健康者作为对照组,检测其IGF-1和CEA水平,并评价其单独和联合检测对CRC的诊断价值.采用受试者工作特征曲线下面积(area under curve,AUC)、灵敏度和特异度评价指标的诊断价值.结果 在区分对照组和合并组时,CEA与循环IGF-1两者联合检测,在男性≤60岁、61~70岁和≥71岁时,其灵敏度和特异度分别为77.94%和79.42%、78.49%和65.85%、63.64%和78.48%;其AUC分别为0.906、0.837和0.813.与CEA单独检测CRC比较,在男性≤60岁和61~70岁时,AUC差异有统计学意义,Z=4.315,1.987;P=0.020,0.031,当男性≥71岁时,AUC差异无统计学意义,Z=0.535,P=0.592.区分对照组和单纯CRC组时,CEA和循环IGF-1两者联合检测,在男性≤60岁、61~70岁和≥71岁时灵敏度和特异度分别为72.58%和82.35%、69.32%和65.85%、63.77%和70.89%,其AUC分别为0.854、0.727和0.835,与CEA单独检测CRC比较,差异有统计学意义,Z=2.219,3.426,3.142;P=0.031,0.028,0.043.结论 CEA联合IGF-1后,可明显提高筛查灵敏度.在男性≤60岁时,诊断价值较高.循环IGF-1对于CRC患者具有一定的辅助诊断价值,与CEA联合检测可为临床CRC诊断提供一种潜在辅助诊断方法.
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