Objective To compare the performance of MTBDRplus V2 and Xpert MTB/RIF for detecting smear negative pulmonary tuberculosis （PTB）. Methods Clinical PTB suspects were enrolled consecutively in Anhui Chest Hospital and...Objective To compare the performance of MTBDRplus V2 and Xpert MTB/RIF for detecting smear negative pulmonary tuberculosis （PTB）. Methods Clinical PTB suspects were enrolled consecutively in Anhui Chest Hospital and Xi＇an Chest Hospital from January to December in 2014. The sputum samples of smear negative PTB suspects were collected and decontaminated. The sediment was used to conduct MTBDRplus V2, Xpert MTB/RIF and drug susceptibility test （DST）. All the samples with discrepant drug susceptibility result between molecular methods and phenotypic method were confirmed by DNA sequencing. Results A total of 1973 cases were enrolled in this study. The detection rates of Mycobacterium tuberculosis complex （MTBC） by MTBDRplus V2 and Xpert MTB/RIF were 27.67% and 27.98%, respectively. When setting MGIT culture result as a gold standard, the sensitivity and specificity of MTBDRplus V2 were 86.74% and 93.84%, and the sensitivity and specificity of Xpert MTB/RIF were 86.55% and 93.43%, respectively. For the detection of the resistance to rifampin, the sensitivity and specificity of MTBDRplus V2 were 94.34% and 96.62%, and the sensitivity and specificity of Xpert MTB/RIF were 88.68% and 95.96%, respectively. For the detection of the resistance to isoniazid, the sensitivity and specificity of MTBDRplus V2 were 77.38% and 98.02%, respectively. Conclusion MTBDRplus V2 and Xpert MTB/RIF can be used to detect MTBC in smear negative samples with satisfactory performance.展开更多
目的观察结核感染T细胞斑点试验(T cell spot test of tuberculosis infection,T-SPOT.TB)对涂阴肺结核早期的诊断价值。方法随机选取我院2015年4月~2017年10月收治的60例涂阴肺结核病患者以及140例非结核健康者为本次实验研究对象,实...目的观察结核感染T细胞斑点试验(T cell spot test of tuberculosis infection,T-SPOT.TB)对涂阴肺结核早期的诊断价值。方法随机选取我院2015年4月~2017年10月收治的60例涂阴肺结核病患者以及140例非结核健康者为本次实验研究对象,实验对象均行结核菌素纯蛋白衍生物(Purified Protein Derivative of Tuberculin,PPD)试验检测、T-SPOT.TB检测和结核抗体(Tuberculosis Antibody,TB-AB)测试,比较三种检测方式对肺结核的临床检出效果。结果 60例涂阴肺结核病患者T-SPOT.TB敏感性为96.7%,T-SPOT.TB检测敏感性明显优于TB-AB、PPD,140例非结核健康者T-SPOT.TB特异性为97.9%,T-SPOT.TB检测特异性明显优于TB-AB、PPD,差异具有统计学意义(P<0.05)。结论 T-SPOT.TB诊断涂阴肺结核的敏感性、准确性和特异性均较高,具有较高的临床应用价值。展开更多
文摘Objective To compare the performance of MTBDRplus V2 and Xpert MTB/RIF for detecting smear negative pulmonary tuberculosis （PTB）. Methods Clinical PTB suspects were enrolled consecutively in Anhui Chest Hospital and Xi＇an Chest Hospital from January to December in 2014. The sputum samples of smear negative PTB suspects were collected and decontaminated. The sediment was used to conduct MTBDRplus V2, Xpert MTB/RIF and drug susceptibility test （DST）. All the samples with discrepant drug susceptibility result between molecular methods and phenotypic method were confirmed by DNA sequencing. Results A total of 1973 cases were enrolled in this study. The detection rates of Mycobacterium tuberculosis complex （MTBC） by MTBDRplus V2 and Xpert MTB/RIF were 27.67% and 27.98%, respectively. When setting MGIT culture result as a gold standard, the sensitivity and specificity of MTBDRplus V2 were 86.74% and 93.84%, and the sensitivity and specificity of Xpert MTB/RIF were 86.55% and 93.43%, respectively. For the detection of the resistance to rifampin, the sensitivity and specificity of MTBDRplus V2 were 94.34% and 96.62%, and the sensitivity and specificity of Xpert MTB/RIF were 88.68% and 95.96%, respectively. For the detection of the resistance to isoniazid, the sensitivity and specificity of MTBDRplus V2 were 77.38% and 98.02%, respectively. Conclusion MTBDRplus V2 and Xpert MTB/RIF can be used to detect MTBC in smear negative samples with satisfactory performance.
文摘目的观察结核感染T细胞斑点试验(T cell spot test of tuberculosis infection,T-SPOT.TB)对涂阴肺结核早期的诊断价值。方法随机选取我院2015年4月~2017年10月收治的60例涂阴肺结核病患者以及140例非结核健康者为本次实验研究对象,实验对象均行结核菌素纯蛋白衍生物(Purified Protein Derivative of Tuberculin,PPD)试验检测、T-SPOT.TB检测和结核抗体(Tuberculosis Antibody,TB-AB)测试,比较三种检测方式对肺结核的临床检出效果。结果 60例涂阴肺结核病患者T-SPOT.TB敏感性为96.7%,T-SPOT.TB检测敏感性明显优于TB-AB、PPD,140例非结核健康者T-SPOT.TB特异性为97.9%,T-SPOT.TB检测特异性明显优于TB-AB、PPD,差异具有统计学意义(P<0.05)。结论 T-SPOT.TB诊断涂阴肺结核的敏感性、准确性和特异性均较高,具有较高的临床应用价值。
