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  • Title: Diagnostic utility of interferon-gamma-induced protein of 10 kDa (IP-10) in tuberculous pleurisy.
    Author: Supriya P, Chandrasekaran P, Das SD.
    Journal: Diagn Microbiol Infect Dis; 2008 Oct; 62(2):186-92. PubMed ID: 18620834.
    Abstract:
    Tuberculous pleuritis (TP) is characterized by predominant Th1 immune response. We observed significantly high levels of interferon gamma (IFN-gamma) and chemokines such as IP-10, monokine induced by IFN-gamma (MIG), interleukin 8 (IL-8), monocyte chemotactic protein (MCP)-1, and macrophage inflammatory protein (MIP)-1alpha in tuberculous pleural effusions. In the current study, we evaluated the diagnostic utility of IFN-gamma-dependent chemokine especially IP-10. The receiver operating characteristics (ROC) curve analyses based on cytometric bead array values depicted high sensitivity only for IP-10 (76.3%) followed by IFN-gamma (73.7%). The ELISA test further confirmed the significantly high levels of IFN-gamma and IP-10 in TP. The ROC curve analysis again demonstrated high area under the curve (AUC) for IP-10 (0.966) than the referred diagnostic marker IFN-gamma (0.930). The better sensitivity (84.2% for IFN-gamma and 89.2% for IP-10) and equal specificity (95.7%) of IP-10 assay compared with IFN-gamma suggest that IP-10 is a potential diagnostic marker for evaluating TP.
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