Response to Rv2628 latency antigen associates with cured tuberculosis and remote infection

D. Goletti, O. Butera, V. Vanini, F. N. Lauria, C. Lange, K. L M C Franken, C. Angeletti, T. H M Ottenhoff, E. Girardi

Research output: Contribution to journalArticlepeer-review

Abstract

Interferon-γ release assays based on region of difference 1 antigens have improved diagnosis of latent tuberculosis infection (LTBI). However, these tests cannot discriminate between recently acquired infection (higher risk of progression to active tuberculosis) and remote LTBI. The objective of the present study was to evaluate the T-cell interferon-γ responses to Mycobacterium tuberculosis DosR-regulon-encoded antigens (latency antigens) compared with QuantiFERON TB-Gold In-Tube (QFT-GIT) in subjects at different stages of tuberculosis. A total of 16 individuals with remote LTBI and 23 with recent infection were studied; 15 controls unexposed to M. tuberculosis and 50 patients with active tuberculosis and 45 with cured tuberculosis were also analysed. The results indicated that subjects with remote LTBI showed significantly higher whole-blood interferon-γ responses to M. tuberculosis latency antigen Rv2628 than did individuals with recent infection, active tuberculosis and controls (p

Original languageEnglish
Pages (from-to)135-142
Number of pages8
JournalEuropean Respiratory Journal
Volume36
Issue number1
DOIs
Publication statusPublished - 2010

Keywords

  • Diagnostics
  • Dormancy
  • Recent tuberculosis infection
  • Remote latent tuberculosis infection
  • Tuberculosis

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Medicine(all)

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