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Infection and Immunity, June 2004, p. 3628-3633, Vol. 72, No. 6
0019-9567/04/$08.00+0 DOI: 10.1128/IAI.72.6.3628-3633.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.
Contribution of Gelatinase, Serine Protease, and fsr to the Pathogenesis of Enterococcus faecalis Endophthalmitis
Michael Engelbert,1,
Eleftherios Mylonakis,2,
Frederick M. Ausubel,3,4 Stephen B. Calderwood,2,5 and Michael S. Gilmore1,6*
Department of Microbiology and Immunology,1
Department of Ophthalmology, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma,6
Division of Infectious Diseases,2
Department of Molecular Biology, Massachusetts General Hospital,3
Department of Genetics,4
Department of Microbiology and Molecular Genetics, Harvard Medical School, Boston, Massachusetts5
Received 24 September 2003/
Returned for modification 4 December 2003/
Accepted 19 February 2004
Gelatinase and serine protease were found to contribute in concert to pathogenesis in a rabbit model of endophthalmitis. However, a mutant defective in the fsr regulator was observed to be more attenuated than a mutant rendered defective in the expression of gelatinase and serine protease as the result of a polar transposon insertion into the former. This increased attenuation suggests that there are possible additional pleiotropic effects of the defect in fsr on expression of traits contributing to the pathogenesis of enterococcal infection.
* Corresponding author. Mailing address: Department of Ophthalmology and Microbiology and Immunology, University of Oklahoma Health Sciences Center, 975 NE 10th St., Oklahoma City, OK 73104. Phone: (405) 271-1083. Fax: (405) 271-8651. E-mail:
Michael-Gilmore{at}ouhsc.edu.
Editor: J. N. Weiser
M.E. and E.M. contributed equally to this work
Infection and Immunity, June 2004, p. 3628-3633, Vol. 72, No. 6
0019-9567/04/$08.00+0 DOI: 10.1128/IAI.72.6.3628-3633.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.
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