Co-detection of P21 ,P53 and HSP70 and their possible role in diagnosis of polycyclic aromatic hydrocarbons(PAHs)-related lung cancer
2003
目的探讨多环芳烃(PAHs)相关肺癌的早期诊断指标,以期用于职业性肺癌及职业相关肺癌的筛检.方法采用Western斑点印迹法,对确诊的PAHs相关肺癌组(简称肺癌组)29例、非肿瘤性肺病组28例和健康对照组30例人群的血清中P21、P53及热应激蛋白(HSP)70蛋白水平进行检测.结果肺癌组患者血清中P21、P53及HSP70蛋白阳性检出率(P21 58.62%、P53 34.48%、HSP7041.38%)高于非肿瘤性肺病组(P21 14.29%、P53 7.14%、HSP70 10.71%),差异有显著性(P<0.01);血清标本P21蛋白敏感性为58.62%,阴性预测值(NPV)为68.42%;P53蛋白的敏感性为34.48%,NPV为78.05%;HSP70蛋白的敏感性为41.38%,NPV为63.04%.3种蛋白联合检测的敏感性可提高到82.76%,与任何单一指标相比,差异均有显著性(P<0.05);NPV为78.26%.18例细胞学阴性肺癌患者P21、P53或HSP70阳性13例(72.22%).结论P21、P53及HSP70蛋白联合检测对PAHs相关肺癌诊断提供了一套筛选指标,同时可补充细胞学的诊断价值.
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