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Extra-pulmonary tuberculosis: a biomarker analysis.
MedLine Citation:
PMID:  24652106     Owner:  NLM     Status:  Publisher    
INTRODUCTION: Studies on biomarkers in tuberculosis are focused on pulmonary forms of this disease (PTB), and only limited information is currently available on biomarkers of extra-pulmonary tuberculosis (EPTB).
METHODS: Serum samples from 24 patients with PTB, 29 patients with EPTB and 27 healthy controls were obtained, and the levels of interferon-gamma, chemokine ligand 9, mannose-binding lectin (MBL), tumor marker Ca-125 and adenosine deaminase were determined.
RESULTS: The circulating levels of all tested biomarkers in the serum were significantly higher in PTB and EPTB patients than in controls. However, there were no significant differences in the levels of the biomarkers between patients with PTB and EPTB, with the exception of serum levels of MBL which were significantly higher in patients with EPTB than in patients with PTB (p = 0.01). In patients with EPTB, no significant differences were observed in biomarker levels among patients with or without concomitant PTB involvement. Based on MBL serum levels, ROC curve analysis showed an AUC of 0.85 for EPTB versus non-EPTB. The optimal cut-off value of MBL serum levels for EPTB versus non-EPTB was 1,000 μg/ml, with a sensitivity and specificity of 79.3 and 78.0 %, respectively.
CONCLUSIONS: Biomarkers usually present as acute phase reactants and do not enable pulmonary forms to be differentiated from more serious or extra-pulmonary forms. MBL may be an exception.
J Fortún; P Martín-Dávila; E Gómez-Mampaso; A Vallejo; C Cuartero; A González-García; J Rubí; E Pallarés; S Moreno
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-3-21
Journal Detail:
Title:  Infection     Volume:  -     ISSN:  1439-0973     ISO Abbreviation:  Infection     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-3-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0365307     Medline TA:  Infection     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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