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Lack of Receptor for Advanced Glycation End Products Leads to Less Severe Staphylococcal Skin Infection but More Skin Abscesses and Prolonged Wound Healing.
- Source :
-
The Journal of infectious diseases [J Infect Dis] 2018 Jul 24; Vol. 218 (5), pp. 791-800. - Publication Year :
- 2018
-
Abstract
- Background: Lack of receptor for advanced glycation end products (RAGE) ameliorates several infections including Staphylococcus aureus pneumonia. We sought to investigate the role of RAGE in staphylococcal skin infection in mice.<br />Methods: Wild-type (WT) and RAGE deficient (RAGE-/-) mice were subcutaneously inoculated with S. aureus SH1000 strain in abscess-forming dose or necrotic dose. Clinical signs of dermatitis, along with histopathological changes, were compared between the groups.<br />Results: The skin lesion size was smaller in RAGE-/- mice. Infected RAGE-/- mice expressed lower proinflammatory cytokines in local skins compared to control mice. Low dose of bacteria caused more abscess formation in RAGE-/- mice compared to skin necrosis that was more often observed in WT mice. As a result of more abscess formation, the wound healing was prolonged in RAGE-/- mice. Importantly, RAGE-/- mice had lower bacterial loads in the skin than controls, which is correlated with higher local levels of myeloperoxidase before skin infection. In vitro, enhanced phagocytic capacity of neutrophils and macrophages obtained from RAGE-/- mice compared to control mice was observed.<br />Conclusions: RAGE deficiency up-regulates phagocytic capacity of phagocytes, resulting in lower bacterial burden in local skin and milder skin lesions in mice with staphylococcal skin infection.
- Subjects :
- Abscess genetics
Animals
Bacterial Load
Cytokines analysis
Disease Models, Animal
Female
Histocytochemistry
Macrophages immunology
Male
Mice, Inbred C57BL
Mice, Knockout
Neutrophils immunology
Phagocytosis
Receptor for Advanced Glycation End Products metabolism
Staphylococcal Skin Infections genetics
Abscess pathology
Receptor for Advanced Glycation End Products deficiency
Skin pathology
Staphylococcal Skin Infections pathology
Wound Healing
Subjects
Details
- Language :
- English
- ISSN :
- 1537-6613
- Volume :
- 218
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- The Journal of infectious diseases
- Publication Type :
- Academic Journal
- Accession number :
- 29329449
- Full Text :
- https://doi.org/10.1093/infdis/jiy007