Clinical diagnostic utility of IP-10 and LAM antigen levels for the diagnosis of tuberculous pleural effusions in a high burden setting.
Clinical diagnostic utility of IP-10 and LAM antigen levels for the diagnosis of tuberculous pleural effusions in a high burden setting.
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IP-10和LAM抗原水平的临床诊断效用,用于在高负担设置下进行结核性胸腔积液。
DOI:
10.1371/journal.pone.0004689
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发表时间:
2009
期刊:
影响因子:
3.7
通讯作者:
Zumla A
中科院分区:
文献类型:
--
作者:
Dheda K;Van-Zyl Smit RN;Sechi LA;Badri M;Meldau R;Symons G;Khalfey H;Carr I;Maredza A;Dawson R;Wainright H;Whitelaw A;Bateman ED;Zumla A
Current tools for the diagnosis of tuberculosis pleural effusions are sub-optimal. Data about the value of new diagnostic technologies are limited, particularly, in high burden settings. Preliminary case control studies have identified IFN-γ-inducible-10kDa protein (IP-10) as a promising diagnostic marker; however, its diagnostic utility in a day-to-day clinical setting is unclear. Detection of LAM antigen has not previously been evaluated in pleural fluid. We investigated the comparative diagnostic utility of established (adenosine deaminase [ADA]), more recent (standardized nucleic-acid-amplification-test [NAAT]) and newer technologies (a standardized LAM mycobacterial antigen-detection assay and IP-10 levels) for the evaluation of pleural effusions in 78 consecutively recruited South African tuberculosis suspects. All consenting participants underwent pleural biopsy unless contra-indicated or refused. The reference standard comprised culture positivity for M. tuberculosis or histology suggestive of tuberculosis. Of 74 evaluable subjects 48, 7 and 19 had definite, probable and non-TB, respectively. IP-10 levels were significantly higher in TB vs non-TB participants (p<0.0001). The respective outcomes [sensitivity, specificity, PPV, NPV %] for the different diagnostic modalities were: ADA at the 30 IU/L cut-point [96; 69; 90; 85], NAAT [6; 93; 67; 28], IP-10 at the 28,170 pg/ml ROC-derived cut-point [80; 82; 91; 64], and IP-10 at the 4035 pg/ml cut-point [100; 53; 83; 100]. Thus IP-10, using the ROC-derived cut-point, missed ∼20% of TB cases and mis-diagnosed ∼20% of non-TB cases. By contrast, when a lower cut-point was used a negative test excluded TB. The NAAT had a poor sensitivity but high specificity. LAM antigen-detection was not diagnostically useful. Although IP-10, like ADA, has sub-optimal specificity, it may be a clinically useful rule-out test for tuberculous pleural effusions. Larger multi-centric studies are now required to confirm our findings.
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影响因子:
2.8
作者:
Yeruva S;Ramadori G;Raddatz D
通讯作者:
Raddatz D
影响因子:
3.3
作者:
Mazzanti, Benedetta;Aldinucci, Alessandra;Ballerini, Clara
通讯作者:
Ballerini, Clara
影响因子:
4.3
作者:
Yang, Chul-Su;Lee, Ji-Sook;Jo, Eun-Kyeong
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Jo, Eun-Kyeong
影响因子:
3.7
作者:
Pai, M;Flores, LL;Colford, JM
通讯作者:
Colford, JM
DOI:
10.1016/j.trstmh.2005.04.014
发表时间:
2005-12-01
影响因子:
2.2
作者:
Boehme, C;Molokova, E;Hoelscher, M
通讯作者:
Hoelscher, M