Concepedia

Interference between <i>Streptococcus pneumoniae</i> and <i>Staphylococcus aureus</i> : In Vitro Hydrogen Peroxide-Mediated Killing by <i>Streptococcus pneumoniae</i>

Gili Regev‐Yochay, Krzysztof Trzciński, Claudette M. Thompson, Richard Malley, Marc Lipsitch

Journal of Bacteriology · 2006 · 199 citations · 24 references

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Abstract

The bactericidal activity of Streptococcus pneumoniae toward Staphylococcus aureus is mediated by hydrogen peroxide. Catalase eliminated this activity. Pneumococci grown anaerobically or genetically lacking pyruvate oxidase (SpxB) were not bactericidal, nor were nonpneumococcal streptococci. These results provide a possible mechanistic explanation for the interspecies interference observed in epidemiologic studies.

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