【摘要】 目的探讨检测肺癌患者外周血和骨髓微转移的特异性、敏感性及临床意义。方法应用巢式RT-PCR技术,检测59例肺癌患者、11例肺部良性病变患者和20例健康人外周血、骨髓中CK19 mRNA表达。结果巢式RT-PCR检测技术的敏感性达到10-6。59例肺癌患者中,20例检测出外周血微转移,13例检测出骨髓微转移,其阳性检出率分别为33.9％(20/59)和22.0％(13/59),二者有显著正相关(P<0.05)。肺癌患者外周血和骨髓微转移与肺癌组织学类型、细胞分化程度及P-TNM分期均存在密切关系(P<0.05或P<0.01)。肺良性病变患者、健康人外周血和骨髓中均未检测出CK19 mRNA表达。结论肺癌患者外周血和骨髓中均存在用常规方法检测不出的微转移;应用巢式RT-PCR技术检测肺癌患者外周血和骨髓中CK19 mRNA表达,对肺癌微转移的分子诊断具有重要的理论意义和临床应用前景。更多还原

【Abstract】 Objective To evaluate the specificity, sensitivity and their clinical significance of detecting CK19 mRNA expression by nested RT-PCR for molecular diagnosis of micrometastasis in the peripheral blood and bone marrow of patients with non-small cell lung cancer. Methods CK19 mRNA expression was detected by nested RT-PCR in peripheral blood and bone marrow samples from 59 lung cancer patients, with samples of 11 benign pulmonary lesion patients and 20 healthy adults as control. Results The sensitivity of nested RT-PCR was 10~6. The positive rates of micrometastasis were 33.89% (20/59) in peripheral blood and 22.03% (13/59) in bone marrow, with a highly positive correlation existing between the two groups( P < 0.05). The micrometastasis in peripheral blood and bone marrow was closely correlated with the pathological classification and cell differentiation ( P < 0.05) and P-TNM stage ( P < 0.01) . NoCK19 mRNA expression was found in the samples from patients with benign pulmonary lesion or healthy adult volunteers. Conclusion The peripheral blood and bone marrow from patients with non-small cell lung cancer possesses micrometastasis that can not be detected by common methods. Nested RT-PCR technique shows favorable specificity and sensitivity in detecting the condition with definite clinical prospects.更多还原