Mapamba, D.A.* ; Sabi, I.* ; Lalashowi, J.* ; Sauli, E.* ; Buza, J.* ; Olomi, W.* ; Mtafya, B.* ; Kibona, M.* ; Bakhuli, A.* ; Rachow, A. ; Velen, K.* ; Hoelscher, M. ; Ntinginya, N.E.* ; Charalambous, S.* ; Churchyard, G.* ; Wallis, R.S.*
N-acetylcysteine modulates markers of oxidation, inflammation and infection in tuberculosis.
J. Infect. 90:106379 (2025)
BACKGROUND: Half the global tuberculosis health burden is due to post-tuberculosis lung disease. Host-directed therapies have been proposed to reduce this burden. N-acetylcysteine (NAC) provides the conditionally essential amino acid cysteine required for synthesis of glutathione, an antioxidant thiol. We recently reported clinical outcomes of a trial of adjunctive NAC in patients with pulmonary tuberculosis, finding that NAC improved the secondary endpoint of recovery of lung function. Here we report the effects of NAC on biomarkers of oxidation, inflammation, and infection in that trial. METHODS: 140 adults with moderate or far-advanced pulmonary tuberculosis were randomly assigned to standard tuberculosis treatment with or without NAC 1200mg twice daily for months 1-4. Sputum and blood samples were obtained at specified intervals to measure total glutathione, MTB-induced cytokines, haemoglobin, whole blood mycobactericidal activity (WBA), and sputum MTB burden. RESULTS: NAC treatment rapidly increased total glutathione (P<.0001), but levels did not reach those of healthy volunteers (P<.001). NAC reduced MTB-induced TNF-α (P =.011) without affecting IL-10, and accelerated the recovery of hemoglobin in participants with low values on entry. NAC did not affect killing in ex vivo whole blood culture but did slow the clearance of MTB from sputum (P=0.003). CONCLUSION: Adjunctive NAC showed antioxidant and anti-inflammatory effects consistent with the amelioration of immunopathology seen in preclinical models. Two biomarkers of antimicrobial activity showed discordant results; neither demonstrated the enhanced antimicrobial effects seen preclinically. The reduction of oxidative stress and inflammation by NAC may explain its effects on the recovery of lung function post-TB.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Glutathione ; Inflammation ; N-acetylcysteine ; Tb-biomarkers ; Tuberculosis; Mycobacterium-tuberculosis; Whole-blood; Bactericidal Activity; Moxifloxacin; Pharmacokinetics; Gatifloxacin; Regimens; Immunity; Therapy; Disease
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2025
Prepublished im Jahr
0
HGF-Berichtsjahr
2025
ISSN (print) / ISBN
0163-4453
e-ISSN
0163-4453
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 90,
Heft: 2,
Seiten: ,
Artikelnummer: 106379
Supplement: ,
Reihe
Verlag
Elsevier
Verlagsort
32 Jamestown Rd, London Nw1 7by, England
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
Institut(e)
Research Unit Global Health (UGH)
POF Topic(s)
30205 - Bioengineering and Digital Health
Forschungsfeld(er)
Enabling and Novel Technologies
PSP-Element(e)
G-540001-003
Förderungen
German Ministry of Education and Research (BMBF)
Copyright
Erfassungsdatum
2025-03-19