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Journal of Clinical Microbiology, March 2006, p. 857-860, Vol. 44, No. 3
0095-1137/06/$08.00+0     doi:10.1128/JCM.44.3.857-860.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Isolation of a Strictly Anaerobic Strain of Staphylococcus epidermidis

Marie-Claire Rowlinson,1* Phyllis LeBourgeois,1 Kevin Ward,1 Yuli Song,4 Sydney M. Finegold,2,3,5 and David A. Bruckner1

Department of Pathology and Laboratory Medicine,1 Department of Microbiology, Immunology, and Molecular Genetics,2 Department of Medicine, UCLA Medical Center, Los Angeles, California 90095,3 Wadsworth Anaerobic Bacteriology Laboratory,4 Infectious Disease Section, VA Medical Center, West Los Angeles, California 900735

Received 10 November 2005/ Returned for modification 16 December 2005/ Accepted 20 December 2005

Staphylococcus epidermidis is a well-characterized, nonfastidious, aerobic gram-positive coccus commonly isolated in the clinical microbiology laboratory. Although coagulase-negative staphylococci, including Staphylococcus epidermidis, are often considered a contaminant in the clinical laboratory, an increasing number of reports describe their pathogenesis, in particular in infections of prosthetic devices. This article describes the isolation of a strictly anaerobic strain of Staphylococcus epidermidis in pure culture from the site of an infected prosthetic hip. This isolate was unique in that it grew only under strictly anaerobic conditions. Initially, the isolate was thought to be a known anaerobic gram-positive coccus. However, certain key biochemical and antimicrobial tests performed as part of the standard laboratory identification procedure were not consistent with results expected for any known anaerobic gram-positive coccus; the isolate was catalase positive and metronidazole and penicillin resistant. This isolate was characterized by further biochemical analysis, antimicrobial testing, and nucleic acid sequencing. This paper presents the first documented isolation of a strictly anaerobic Staphylococcus epidermidis strain, confirmed by rpoB gene sequencing.

* Corresponding author. Mailing address: Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, 10833 LeConte Ave., Los Angeles, CA 90095-1713. Phone: (310) 794-2761. Fax: (310) 794-2765. E-mail: mrowlinson{at}mednet.ucla.edu.

Journal of Clinical Microbiology, March 2006, p. 857-860, Vol. 44, No. 3
0095-1137/06/$08.00+0     doi:10.1128/JCM.44.3.857-860.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



This article has been cited by other articles:

  • Cotter, J. J., O'Gara, J. P., Mack, D., Casey, E. (2009). Oxygen-Mediated Regulation of Biofilm Development Is Controlled by the Alternative Sigma Factor {sigma}B in Staphylococcus epidermidis. Appl. Environ. Microbiol. 75: 261-264 [Abstract] [Full Text]  


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