Differences in PPD- and mitogen-induced T-cell activation marker expression characterize immunopathology in acute tuberculosis patients
Abstract Impaired T-cell responses to mitogens and high T-cell activation marker (TAM) expression on Mycobacterium tuberculosis–specific T-cells characterize immunopathology in patients with tuberculosis (TB). In a study of patients with TB (n = 60) and asymptomatic contacts (controls, n = 37), we found that TB patients had higher $ CD38^{+} $ T-cell proportions specific for M. tuberculosis protein ($ PPD_{Mtb} $), yet total proportions of $ PPD_{Mtb} $-specific T-cells were comparable. Notably, both activated ($ CD38^{+} $) and total IFN-$ γ^{+} $ T-cells from TB patients had lower mitogen (phytohemagglutinin, PHA)-induced responses. This impaired mitogen response improved the classification efficacy of the TAM-TB assay, especially employing the PPD/PHA-induced T-cell ratio..
Medienart: |
E-Artikel |
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Erscheinungsjahr: |
2024 |
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Erschienen: |
2024 |
Enthalten in: |
Zur Gesamtaufnahme - volume:43 |
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Enthalten in: |
European journal of clinical microbiology & infectious diseases - 43(2024), 3 vom: 03. Jan., Seite 611-616 |
Sprache: |
Englisch |
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Beteiligte Personen: |
Acheampong, Isaac [VerfasserIn] |
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Links: |
Volltext [kostenfrei] |
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Themen: |
Anergy |
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Anmerkungen: |
© The Author(s) 2024 |
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doi: |
10.1007/s10096-023-04741-3 |
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funding: |
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Förderinstitution / Projekttitel: |
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PPN (Katalog-ID): |
SPR055040357 |
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520 | |a Abstract Impaired T-cell responses to mitogens and high T-cell activation marker (TAM) expression on Mycobacterium tuberculosis–specific T-cells characterize immunopathology in patients with tuberculosis (TB). In a study of patients with TB (n = 60) and asymptomatic contacts (controls, n = 37), we found that TB patients had higher $ CD38^{+} $ T-cell proportions specific for M. tuberculosis protein ($ PPD_{Mtb} $), yet total proportions of $ PPD_{Mtb} $-specific T-cells were comparable. Notably, both activated ($ CD38^{+} $) and total IFN-$ γ^{+} $ T-cells from TB patients had lower mitogen (phytohemagglutinin, PHA)-induced responses. This impaired mitogen response improved the classification efficacy of the TAM-TB assay, especially employing the PPD/PHA-induced T-cell ratio. | ||
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