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Infect Immun. 2005 Nov;73(11):7772-4.

Decreased virulence of a gls24 mutant of Enterococcus faecalis OG1RF in an experimental endocarditis model.

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  • 1Center for the Study of Emerging and Re-Emerging Pathogens, University of Texas Medical School at Houston, 6431 Fannin, MSB 2.112, Houston, TX 77030, USA.


In the current study, the gls24 disruption mutant TX10100, previously shown to be more sensitive to bile salts and attenuated in a mouse peritonitis model, showed an approximately fivefold higher 50% infective dose than wild-type OG1RF in a rat endocarditis model. When administered as a mixture, TX10100, unlike a downstream glsB mutant, was significantly outnumbered by OG1RF in vegetations, organs, and blood, despite being inoculated in greater numbers. These results indicate that gls24 is important in the pathogenesis of enterococcal endocarditis.

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