Cited by 106Sepsis Diagnosis and TreatmentImmune Response and InflammationInflammation biomarkers and pathways

The Hydroxylase Inhibitor Dimethyloxallyl Glycine Attenuates Endotoxic Shock Via Alternative Activation of Macrophages and IL-10 Production by B1 Cells

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Hams, Emily, Saunders, Sean P., Cummins, Eoin P., O'Connor, Aisling, Tambuwala, Murtaza T., Gallagher, William M., Byrne, Annette, Campos-Torres, Antonio +4 more·2011·Shock

Abstract

Localized tissue hypoxia is a feature of infection and inflammation, resulting in the upregulation of the transcription factors hypoxia-inducible factor 1α and nuclear factor κB (NF-κB) via inhibition of oxygen sensing hydroxylase enzymes. Previous studies have demonstrated a beneficial role for the hydroxylase inhibitor dimethyloxallyl glycine (DMOG) in inflammatory conditions, including experimental colitis, by regulating the activity of hypoxia-inducible factor 1 and NF-κB. We have demonstrated in vivo that pretreatment with DMOG attenuates systemic LPS-induced activation of the NF-κB pathway. Furthermore, mice treated with DMOG had significantly increased survival in LPS-induced shock. Conversely, in models of polymicrobial sepsis, DMOG exacerbates disease severity. Dimethyloxallyl glycine treatment of mice promotes M2 polarization in macrophages within the peritoneal cavity, resulting in the downregulation of proinflammatory cytokines such as TNF-α. In addition, in vivo DMOG treatment upregulates IL-10 expression, specifically in the peritoneal B1 cell population. This study demonstrates cell type-specific roles for hydroxylase inhibition in vivo and provides insight into the mechanism underlying the protection conveyed by DMOG in models of endotoxic shock.

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Authors
Hams, E., Saunders, S. P., Cummins, E. P., O'Connor, A., Tambuwala, M. T., Gallagher, W. M., Byrne, A., Campos-Torres, A., Moynagh, P. M., Jobin, C., Taylor, C. T., & Fallon, P. G.
Affiliations
  • Trinity College (CA)
  • University College Dublin (IE)
  • University of North Carolina at Chapel Hill (US)
Corresponding author
  • Hams, Emily
  • Saunders, Sean P.
  • Fallon, Padraic G.
Venue
Shock
Published
2011-09
Volume
36
Issue
3
Pages
295-302
ISSN
1073-2322 (ISSN-L)
OpenAlex
W1619977460
Cited by
106
References
36
Citations by year
2026: 6 · 2025: 3 · 2024: 4 · 2023: 6 · 2022: 5 · 2021: 9 · 2020: 10 · 2019: 8 · 2018: 12 · 2017: 5 · 2016: 10 · 2015: 9 · 2014: 7 · 2013: 9 · 2012: 2
FWCI
4.56
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Shock (publishedVersion)
  • PubMed (publishedVersion)
  • Ulster University Research Portal (Ulster University) (publishedVersion, other-oa)
  • Maynooth University ePrints and eTheses Archive (Maynooth University) (acceptedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • Lincoln Repository (University of Lincoln) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • UNC Libraries
Funders
  • Science Foundation Ireland (07/IN.1/B902)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R01DK047700)
Topics
  • Health Sciences › Medicine › Epidemiology › Sepsis Diagnosis and Treatment
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Immunology and Microbiology › Immunology › Inflammation biomarkers and pathways
Keywords
endotoxic shock, sepsis, NF-κB signaling, hypoxia-inducible factor-1α, M2 macrophage polarization, IL-10, B-1 cells, lipopolysaccharide, TNF-α, polymicrobial sepsis, oxygen sensing
MeSH terms
Amino Acids, Dicarboxylic, Animals, Flow Cytometry, Mixed Function Oxygenases, Lipopolysaccharides, Macrophages, Mice, Inbred BALB C, Mice, Inbred C57BL, Shock, Septic, Immunoblotting, Polymerase Chain Reaction, NF-kappa B, Interleukin-10, Sepsis, Mice, Receptors, Interleukin-10

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