荧光定量聚合酶链反应在尖锐湿疣诊断中的应用

目的　探讨荧光定量聚合酶链反应 (FQ - PCR)对尖锐湿疣 (CA )的诊断价值。方法　 FQ- PCR检测病理确诊的 CA患者 36份标本和健康人 84份标本 ;FQ- PCR及病理诊断同期检测临床送检病例 2 73份标本 ,并做诊断性试验评价。结果　 36例病理确诊的 CA患者 HPV6和 HPV11的 DNA FQ- PCR全部阳性 ,平均拷贝数为 1.0× 10 7± 1.0× 10 2 / m l;84例健康人 FQ- PCR全部阴性 ,平均拷贝数为 3× 10± 2× 10 / ml。 FQ- PCR与病理诊断符合率为 10 0 % ,CA患者与健康人拷贝数的差异有显著性 (P<0 .0 5 )。FQ- PCR与病理诊断对比得出 :灵敏度为 10 0 % ,特异度为 92 % ,误诊率为 0 .0 8,漏诊率为 0 ,准确度为 98.9% ,阳性预测值为 98.8% ,阴性预测值为 10 0 % ,阳性似然比为 12 .5 ,阴性似然比为 0。结论　 FQ - PCR能准确定量 ,灵敏度高 ,特异性强 ,快速 ,简便 ,可作为尖锐湿疣早期诊断的指标

The Use of FQ-PCR in Detecting Condyloma Acuminata

OBJECTIVE: To assess the value of flurogenic quantitative polymerase chain reaction (FQ-PCR) in detecting condyloma acuminatum(CA). METHODS: Thirty-six samples of CA pathologically diagnosed as positive cases and 84 samples of healthy controls were tested with FQ-PCR, and another 273 samples of clinical cases were examined using both pathological method and FQ-PCR. Then FQ-PCR as a diagnostic test was evaluated. RESULTS: FQ-PCR detected HPV6, HPV11 DNA in all the 36 CA samples, the mean copy being 1.0 x 10(7) +/- 10(2)/ml; the 84 samples of the healthy group ware all negative, the mean copy being 3 x 10(1) +/- 2 x 10(1)/ml. The coincidence rate of FQ-PCR with the pathological diagnosis was 100%. There was significant differnce in copy amount between the CA group and the healthy group, (P < 0.05). At the second stage, comparison between FQ-PCR and the pathological diagnosis showed: Se was 100%, Sp 92%, alpha was 0.08, beta 0, accuracy was 98.9%, positive predictive value was 98.8%, negative predictive value 100%; positive likelihood ratio was 12.5, and negative likelihood ratio 0. CONCLUSION: FQ-PCR as a rapid and simple method could accurately detect and quantify CA and its Se and Sp were high; it can be taken as an index in early CA diagnosis.