Effect of Human Burn Wound Exudate on Pseudomonas aeruginosa Virulence.
Details
Download: BIB_B48DCEC3A883.P001.pdf (907.94 [Ko])
State: Public
Version: author
State: Public
Version: author
Serval ID
serval:BIB_B48DCEC3A883
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Effect of Human Burn Wound Exudate on Pseudomonas aeruginosa Virulence.
Journal
Msphere
ISSN
2379-5042 (Electronic)
ISSN-L
2379-5042
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
1
Number
2
Pages
e00111-15
Language
english
Notes
Publication types: Journal Article Publication Status: epublish
Abstract
Burn wound sepsis is currently the main cause of morbidity and mortality after burn trauma. Infections by notorious pathogens such as Pseudomonas aeruginosa, Staphylococcus aureus, and Acinetobacter baumannii impair patient recovery and can even lead to fatality. In this study, we investigated the effect of burn wound exudates (BWEs) on the virulence of those pathogens. BWEs were collected within 7 days after burn trauma from 5 burn patients. We first monitored their effect on pathogen growth. In contrast to A. baumannii and S. aureus, P. aeruginosa was the only pathogen able to grow within these human fluids. Expression of typical virulence factors such as pyocyanin and pyoverdine was even enhanced compared the levels seen with standard laboratory medium. A detailed chemical composition analysis of BWE was performed, which enabled us to determine the major components of BWE and underline the metabolic modifications induced by burn trauma. These data are essential for the development of an artificial medium mimicking the burn wound environment and the establishment of an in vitro system to analyze the initial steps of burn wound infections. IMPORTANCE Microbial infection of severe burn wounds is currently a major medical challenge. Of the infections by bacteria able to colonize such injuries, those by Pseudomonas aeruginosa are among the most severe, causing major delays in burn patient recovery or leading to fatal issues. In this study, we investigated the growth properties of several burn wound pathogens in biological fluids secreted from human burn wounds. We found that P. aeruginosa strains were able to proliferate but not those of the other pathogens tested. In addition, burn wound exudates (BWEs) stimulate the expression of virulence factors in P. aeruginosa. The chemical composition analysis of BWEs enabled us to determine the major components of these fluids. These data are essential for the development of an artificial medium mimicking the burn wound environment and for in vitro analysis of the initial step in the development of burn wound infections.
Pubmed
Web of science
Open Access
Yes
Create date
17/06/2016 18:56
Last modification date
20/08/2019 16:22