Oestrogen promotes healing in a bacterial LPS model of delayed cutaneous wound repair
Publication date
2016-04Keyword
Cutaneous woundsWound repair
Wound infection
Bacterial wound infection
Oestrogen
17β-estradiol treatment
Skin
Peer-Reviewed
YesOpen Access status
closedAccessAccepted for publication
2015-12-11
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Wound infection is a major clinical problem, yet understanding of bacterial host interactions in the skin remains limited. Microbe-derived molecules, known as pathogen-associated molecular patterns, are recognised in barrier tissues by pattern-recognition receptors. In particular, the pathogen-associated molecular pattern, lipopolysaccharide (LPS), a component of microbial cell walls and a specific ligand for Toll-like receptor 4, has been widely used to mimic systemic and local infection across a range of tissues. Here we administered LPS derived from Klebsiella pneumoniae, a species of bacteria that is emerging as a wound-associated pathogen, to full-thickness cutaneous wounds in C57/BL6 mice. Early in healing, LPS-treated wounds displayed increased local apoptosis and reduced proliferation. Subsequent healing progression was delayed with reduced re-epithelialisation, increased proliferation, a heightened inflammatory response and perturbed wound matrix deposition. Our group and others have previously demonstrated the beneficial effects of 17β-estradiol treatment across a range of preclinical wound models. Here we asked whether oestrogen would effectively promote healing in our LPS bacterial infection model. Intriguingly, co-treatment with 17β-estradiol was able to promote re-epithelialisation, dampen inflammation and induce collagen deposition in our LPS-delayed healing model. Collectively, these studies validate K. pneumoniae-derived LPS treatment as a simple yet effective model of bacterial wound infection, while providing the first indication that oestrogen could promote cutaneous healing in the presence of infection, further strengthening the case for its therapeutic use.Version
No full-text in the repositoryCitation
Crompton R, Williams H, Ansell DM, et al (2016) Oestrogen promotes healing in a bacterial LPS model of delayed cutaneous wound repair. Laboratory Investigation, 96: 439-449Link to Version of Record
https://doi.org/10.1038/labinvest.2015.160Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1038/labinvest.2015.160
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