| Literature DB >> 18223076 |
Bonggoo Park1, Victor Nizet, George Y Liu.
Abstract
Nasal colonization by Staphylococcus aureus is a major predisposing factor for subsequent infection. Recent reports of increased S. aureus colonization among children receiving pneumococcal vaccine implicate Streptococcus pneumoniae as an important competitor for the same niche. Since S. pneumoniae uses H2O2 to kill competing bacteria, we hypothesized that oxidant defense could play a significant role in promoting S. aureus colonization of the nasal mucosa. Using targeted mutagenesis, we showed that S. aureus expression of catalase contributes significantly to the survival of this pathogen in the presence of S. pneumoniae both in vitro and in a murine model of nasal cocolonization.Entities:
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Year: 2008 PMID: 18223076 PMCID: PMC2293205 DOI: 10.1128/JB.00006-08
Source DB: PubMed Journal: J Bacteriol ISSN: 0021-9193 Impact factor: 3.490