Cited by 399Neutrophil, Myeloperoxidase and Oxidative MechanismsSalmonella and Campylobacter epidemiologyImmune Response and Inflammation

Antimicrobial Actions of the Nadph Phagocyte Oxidase and Inducible Nitric Oxide Synthase in Experimental Salmonellosis. II. Effects on Microbial Proliferation and Host Survival in Vivo

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Mastroeni, Pietro, Vazquez-Torres, Andrés, Fang, Ferric C., Xu, Yisheng, Khan, Shahid, Hormaeche, Carlos E., Dougan, Gordon·2000·The Journal of Experimental Medicine

Abstract

The roles of the NADPH phagocyte oxidase (phox) and inducible nitric oxide synthase (iNOS) in host resistance to virulent Salmonella typhimurium were investigated in gp91phox−/−, iNOS−/−, and congenic wild-type mice. Although both gp91phox−/− and iNOS−/− mice demonstrated increased susceptibility to infection with S. typhimurium compared with wild-type mice, the kinetics of bacterial replication were dramatically different in the gp91phox−/− and iNOS−/− mouse strains. Greater bacterial numbers were present in the spleens and livers of gp91phox−/− mice compared with C57BL/6 controls as early as day 1 of infection, and all of the gp91phox−/− mice succumbed to infection within 5 d. In contrast, an increased bacterial burden was detected within reticuloendothelial organs of iNOS−/− mice only beyond the first week of infection. Influx of inflammatory CD11b+ cells, granuloma formation, and serum interferon γ levels were unimpaired in iNOS−/− mice, but the iNOS-deficient granulomas were unable to limit bacterial replication. The NADPH phagocye oxidase and iNOS are both required for host resistance to wild-type Salmonella, but appear to operate principally at different stages of infection.

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  • NOX2 consists of five catalytic subunits, which assemble after phagocytosis forming an active enzymatic complex producing superoxide anions and hydrogen peroxide along with the formation of hydroxyl radicals, the latter pathway being catalyzed by iron via the Fenton reaction.

    “NOX2 consists of five catalytic subunits, which assemble after phagocytosis thereby forming an active enzymatic complex producing superoxide anions and hydrogen peroxide along with the formation of hydroxyl radicals, the latter pathway being catalyzed by iron via the Fenton reaction (56, 59–61).”

    From Macrophage defense mechanisms against intracellular bacteria (2015) · cites this paper as [61]

  • Recent evidence obtained in models of S. typhimurium infection indicates specific compartmentalization of nitrosative and oxidative stress in macrophages and thus divergent effects on the fate and propagation of bacteria.

    “Of interest, recent evidence obtained in models of S. typhiumrium infection indicate specific compartmentalization of nitrosative and oxidative stress in macrophages and thus divergent effects on the fate and propagation of bacteria, extending previous work on cycle specific susceptibility of these bacteria to either of these stress responses (61, 68, 69).”

    From Macrophage defense mechanisms against intracellular bacteria (2015) · cites this paper as [61]

  • The microbicidal activity of activated macrophages depends critically on the phagocytic NADPH oxidase (NOX2/gp91phox) and the inducible form of nitric oxide synthase (iNOS/NOS2).

    “The microbicidal activity of activated Mø depends critically on the phagocytic nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX2/gp91 phox ) and the inducible form of nitric oxide (NO) synthase (iNOS/NOS2) [74,75].”

    From The Iron age of host–microbe interactions (2015) · cites this paper as [75]

  • During host cell-microbe interaction, macrophages can generate reactive oxygen species either via the membrane-associated NADPH oxidase complex or by the mitochondrial electron transport chain.

    “During host cell-microbe interaction, macrophage can generate reactive oxygen species (ROS) either via the membrane associated NADPH oxidase complex or by the mitochondrial electron transport chain”

    From Iron in immune cell function and host defense (2021) · cites this paper as [105]

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  1. Hormaeche C.E. Khan C.M.A. Mastroeni P. Villarreal B. Dougan G. Chatfield S.N. Salmonella vaccinesmechanisms of immunity and their use as carriers of recombinant antigens Ala D. Aldeen D. Hormaeche C.E. Molecular and Clinical Aspects of Vaccine Development 1994 19 153 John Wiley & Sons Chichester, UK

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Authors
Mastroeni, P., Vazquez-Torres, A., Fang, F. C., Xu, Y., Khan, S., Hormaeche, C. E., & Dougan, G.
Affiliations
  • University of Cambridge (GB)
  • cDepartment of Medicine, University of Colorado Health Sciences Center, Denver, Colorado 80262
  • University of Colorado Health (US)
  • bDepartment of Biochemistry, Imperial College, London SW7 2AZ, United Kingdom
Venue
The Journal of Experimental Medicine
Published
2000-07-17
Volume
192
Issue
2
Pages
237-248
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2102601193
Cited by
399
References
61
Citations by year
2026: 6 · 2025: 3 · 2024: 12 · 2023: 13 · 2022: 10 · 2021: 10 · 2020: 22 · 2019: 13 · 2018: 5 · 2017: 9 · 2016: 16 · 2015: 14 · 2014: 23 · 2013: 19 · 2012: 16
FWCI
8.02
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by-nc-sa)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
  • Wellcome Trust
  • National Institutes of Health (AI39557)
  • Directorate for Biological Sciences
  • Biotechnology and Biological Sciences Research Council
  • National Institute of Allergy and Infectious Diseases (AI110181, AI 39557, R01AI039557, F32AI010181, AI44486, R01AI044486)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Neutrophil, Myeloperoxidase and Oxidative Mechanisms
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Salmonella and Campylobacter epidemiology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
inducible nitric oxide synthase, Salmonella typhimurium, salmonellosis, host resistance to infection, iNOS-deficient mice, granuloma formation, interferon-gamma, antimicrobial host defense
MeSH terms
NADPH Oxidase 2, Animals, Flow Cytometry, Interferon-gamma, Membrane Glycoproteins, Mice, Inbred C57BL, Salmonella Infections, Animal, Salmonella typhimurium, Nitric Oxide Synthase, NADPH Oxidases, Mice, Nitric Oxide Synthase Type II

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