ArticleFrontiers in immunology2023
Mycobacterial-specific secretion of cytokines and chemokines in healthcare workers with apparent resistance to infection with
Article in Frontiers in immunology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 14 citations in OpenAlex.
- Mycobacterium tuberculosis-Specific CFP-10/ESAT-6 CD4 and CD8 T-Cell Non-IFN-γ+ Responses Are Common in Young Kenyan Children Despite Low Reported Tuberculosis Exposure.The Journal of infectious diseases · 2026Article
- Incremental diagnostic value of mycobacterium tuberculosis antigen-based skin test for active tuberculosis: a diagnostic accuracy study.Frontiers in immunology · 2026Article
- Multiparameter antigen-specific immunoprofiling in subjects with negative IGRA and TST results with potentialFrontiers in cellular and infection microbiology · 2026Article
- Article
- Association of Mycobacterium tuberculosis aerosolization and HIV coinfection in the index case with T cell responses in household contacts.Scientific reports · 2025Article
- Household contact antigen-speciResearch square · 2024Article
- Retrospective analysis of the clinical utility of multi-cytokine profiles in smear-negative pulmonary tuberculosis.Saudi medical journal · 2024Article
- Bacterial diversity dominates variable macrophage responses of tuberculosis patients in Tanzania.Scientific reports · 2024Article
- Establishment of an in vitro model of monocyte-like THP-1 cells for trained immunity induced by bacillus Calmette-Guérin.BMC microbiology · 2024Article
- Article
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Authors and funding
12 authors at 3 institutions in 4 countries.
Funding
Abstract
Background: Currently, diagnosis of latent TB infection (LTBI) is based on the secretion of IFN-γ in response to Methods: We enrolled HIV-uninfected healthcare workers who had worked in high TB-exposure environments for 5 years or longer. We screened them for LTBI using the tuberculin skin test and the QuantiFERON-TB Gold Plus assay. We performed multiplex Luminex to measure concentrations of T cell-associated cytokines and chemokines as well as total antibodies in plasma collected from unstimulated fresh whole blood and supernatants from QuantiFERON-TB Gold Plus tubes following incubation of whole blood for 16-24 hours with ESAT6/CFP10 peptides. Results: Samples from 78 individuals were analyzed: 33 resisters (TST<10mm; IGRA<0.35 IU/mL), 33 with LTBI (TST≥10mm and IGRA≥0.35 IU/mL) and 12 discordant (TST=0mm; IGRA≥1.0 IU/mL). There were no differences in concentrations of cytokines and chemokines in plasma between the different groups. Resisters had significantly lower concentrations of IFN-γ, IL-2, TNF-α, MIP-1α, MIP-1β, ITAC, IL-13 and GM-CSF in supernatants compared with LTBI group. There were no significant differences in the concentrations in supernatants of IL-10, IL-1β, IL-17A, IL-21, IL-23, MIP-3α, IL-4, IL-5, IL-6, IL-7, IL-8, Fractalkine and IL-12p70 between the groups. We observed that resisters had similar concentrations of total antibodies (IgG1, IgG2, IgG3, IgG4, IgA, and IgM) in plasma and supernatants compared to the LTBI and discordant groups. Conclusion: Resistance to Mtb infection despite sustained exposure is associated with lower Mtb-specific secretion of Th1-associated cytokines and chemokines. However, resisters showed secreted concentrations after Mtb stimulation of total antibodies and cytokines/chemokines associated with innate and Th17 immune responses similar to those with Mtb infection. This suggests an ability to mount non-IFN-γ immune responses to Mtb in apparent resisters.
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