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Prevalence of the ica operon and insertion sequence IS256 among Staphylococcus epidermidis prosthetic joint infection isolates
Örebro University Hospital.
Linköping University, Department of Clinical and Experimental Medicine, Infectious Diseases. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Centre for Medicine, Department of Infectious Diseases in Östergötland.
Örebro University Hospital.
Örebro University Hospital.
2009 (English)In: EUROPEAN JOURNAL OF CLINICAL MICROBIOLOGY and INFECTIOUS DISEASES, ISSN 0934-9723, Vol. 28, no 6, 655-660 p.Article in journal (Refereed) Published
Abstract [en]

Joint replacement surgery has improved the quality of life for hundreds of thousands of patients. However, the infection of a joint implant is an important and serious complication, though the prevalence is low. Staphylococcus epidermidis is the most important pathogen involved in foreign-body infections. S. epidermidis is also a commensal that comprises a substantial part of the normal skin flora of humans. The possibility to demonstrate potential specific virulence markers may facilitate the interpretation of the bacteriological findings, as well as the clinical decision. The prevalence of the ica locus and insertion sequence IS256 by using polymerase chain reaction (PCR) among 32 clinical S. epidermidis isolates from prosthetic joint infections (PJIs) and 24 commensal isolates from nares and skin was investigated. Sixteen (50%) of the 32 PJI isolates harbored the ica operon compared with one-third of the commensal isolates obtained from the samples of the skin and nares of healthy individuals. The IS256 was demonstrated in 26 (81%) out of 32 PJI isolates. By contrast, IS256 was found in one of 24 commensal isolates. In conclusion, IS256 may be superior to the ica operon as a marker of the invasive capacity of S. epidermidis, since it was found in most of the PJI isolates, but rarely among commensals.

Place, publisher, year, edition, pages
2009. Vol. 28, no 6, 655-660 p.
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-19140DOI: 10.1007/s10096-008-0664-6OAI: diva2:223400
Available from: 2009-06-12 Created: 2009-06-12 Last updated: 2013-12-11

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Nilsdotter-Augustinsson, Åsa
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Infectious DiseasesFaculty of Health SciencesDepartment of Infectious Diseases in Östergötland
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