Evidence map›Paper›PMID 22345579›Full record

ArticleAmerican journal of respiratory and critical care medicine2012

Doxycycline and HIV infection suppress tuberculosis-induced matrix metalloproteinases.

Naomi F Walker, Simon O Clark, Tolu Oni, Nuria Andreu, Liku Tezera, Shivani Singh, Luísa Saraiva, Bernadette Pedersen, Dominic L Kelly, Julia A Tree and 7 more

Open access · greenAbstract read
In one paragraph

Article in American journal of respiratory and critical care medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed
5.8field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

89 citing papers in PubMed, 140 citations in OpenAlex.

  1. Doxycycline host-directed therapy in human pulmonary tuberculosis.The Journal of clinical investigation · 2021
    Trial
  2. Trial
  3. Trial
  4. Trial
  5. Observational
  6. Towards host-directed therapy: The role of matrix metalloproteinases in the immunopathogenesis of tuberculosis.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2026
    Review
  7. Review
  8. Review
  9. Review
  10. Frontiers in microbiology · 2026
    Article
  11. Article
  12. Collagen-targeted PET/CT imaging of tuberculosis patients.The European respiratory journal · 2025
    Article
  13. Review
  14. Article
  15. Physiological stage-dependent effects ofFrontiers in microbiology · 2025
    Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. MedComm · 2023
    Review

29 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

17 authors at 5 institutions in 5 countries.

Naomi F WalkerInfectious Diseases and Immunity, Imperial College London, London, UK.
Simon O Clark
Tolu Oni
Nuria Andreu
Liku Tezera
Shivani Singh
Luísa Saraiva
Bernadette Pedersen
Dominic L Kelly
Julia A Tree
Jeanine M D'Armiento
Graeme Meintjes
Francesco A Mauri
Ann Williams
Robert J Wilkinson
Jon S Friedland
Paul T Elkington
Institute of Infection and Immunity · CAUniversity of Cape Town · ZAColumbia University · USCzech Academy of Sciences, Institute of Microbiology · CZImperial College London · GB

Funding

South Africa Tuberculosis AIDS Training (SATBAT)U2RTW007370 · FIC · WITS HEALTH CONSORTIUM (PTY), LTD · PI MARTINSON, NEIL A · 2007 to 2011
$1.9M
South Africa Tuberculosis/AIDS TrainingU2RTW007373 · FIC · UNIV OF NORTH CAROLINA CHAPEL HILL · PI VAN DER HORST, CHARLES MICHAEL · 2007 to 2012
$1.4M
Department of Health DHCS/06/05/012FIC NIH HHS U2R TW007370FIC NIH HHS U2R TW007373Medical Research Council MC_U117588499Medical Research Council U117588499(88499)PHS HHS 1 U2RTW007373PHS HHS 5 U2RTW007370Wellcome Trust 084323Wellcome Trust 088316Wellcome Trust WT 081667
6 · The paper itself

Abstract

rationaleTuberculosis kills more than 1.5 million people per year, and standard treatment has remained unchanged for more than 30 years. Tuberculosis (TB) drives matrix metalloproteinase (MMP) activity to cause immunopathology. In advanced HIV infection, tissue destruction is reduced, but underlying mechanisms are poorly defined and no current antituberculous therapy reduces host tissue damage.

objectivesTo investigate MMP activity in patients with TB with and without HIV coinfection and to determine the potential of doxycycline to inhibit MMPs and decrease pathology.

methodsConcentrations of MMPs and cytokines were analyzed by Luminex array in a prospectively recruited cohort of patients. Modulation of MMP secretion and Mycobacterium tuberculosis growth by doxycycline was studied in primary human cells and TB-infected guinea pigs. MEASUREMENTS AND MAIN

resultsHIV coinfection decreased MMP concentrations in induced sputum of patients with TB. MMPs correlated with clinical markers of tissue damage, further implicating dysregulated protease activity in TB-driven pathology. In contrast, cytokine concentrations were no different. Doxycycline, a licensed MMP inhibitor, suppressed TB-dependent MMP-1 and -9 secretion from primary human macrophages and epithelial cells by inhibiting promoter activation. In the guinea pig model, doxycycline reduced lung TB colony forming units after 8 weeks in a dose-dependent manner compared with untreated animals, and in vitro doxycycline inhibited mycobacterial proliferation.

conclusionsHIV coinfection in patients with TB reduces concentrations of immunopathogenic MMPs. Doxycycline decreases MMP activity in a cellular model and suppresses mycobacterial growth in vitro and in guinea pigs. Adjunctive doxycycline therapy may reduce morbidity and mortality in TB.

Indexed as

AdultAnimalsAnti-Bacterial AgentsCD4 Lymphocyte CountCytokinesDoxycyclineGuinea PigsHIV InfectionsHumansMacrophagesMatrix Metalloproteinase 1Matrix Metalloproteinase 2Matrix Metalloproteinase 3Matrix Metalloproteinase 8Matrix MetalloproteinasesMiddle AgedAnti-Bacterial AgentsCytokinesDoxycyclineMatrix Metalloproteinase 1Matrix Metalloproteinase 2Matrix Metalloproteinase 3Matrix Metalloproteinase 8Matrix Metalloproteinases

Identifiers

PMID22345579
PMCPMC3359940
OpenAlexW1976561995

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.