Characteristics of Community-Associated Methicillin-ResistantStaphylococcus aureus(CA-MRSA) Strains Isolated from Skin and Soft-Tissue Infections in Uruguay
Author(s) -
Lorena Pardo,
Virginia Machado,
Marta Mollerach,
María Inés Mota,
Lorena Tuchscherr,
Pilar Gadea,
Noella Gardella,
Daniel O. Sordelli,
Magdalena Vola,
Felipé Schelotto,
Gustavo Varela
Publication year - 2009
Publication title -
international journal of microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 40
eISSN - 1687-9198
pISSN - 1687-918X
DOI - 10.1155/2009/472126
Subject(s) - leukocidin , pulsed field gel electrophoresis , microbiology and biotechnology , staphylococcus aureus , serotype , methicillin resistant staphylococcus aureus , staphylococcal skin infections , biology , genotype , panton–valentine leukocidin , virology , bacteria , gene , genetics
We analyzed 90 nonduplicates community-associated methicillin-resistant S. aureus (CA-MRSA) strains isolated from skin and soft-tissue infections. All strains were mecA positive. Twenty-four of the 90 strains showed inducible macrolide-lincosamide-streptogramin B resistance. All strains produced α -toxin; 96% and 100% of them displayed positive results for lukS-F and cna genes, respectively. Eigthy-five strains expressed capsular polysaccharide serotype 8. Six different pulsotypes were discriminated by pulsed-field gel electrophoresis (PFGE) and three predominant groups of CA-MRSA strains (1, 2, and 4) were identified, in agreement with phenotypic and genotypic characteristics. Strains of group 1 (pulsotype A, CP8+, and Panton-Valentine leukocidin (PVL)+) were the most frequently recovered and exhibited a PFGE band pattern identical to other CA-MRSA strains previously isolated in Uruguay and Brazil. Three years after the first local CA-MRSA report, these strains are still producing skin and soft-tissue infections demonstrating the stability over time of this community-associated emerging pathogen.
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