Methicillin-Resistant Coagulase-Negative Staphylococci on Pig Farms as a Reservoir of Heterogeneous Staphylococcal Cassette ChromosomemecElements
نویسندگان
چکیده
منابع مشابه
Detection of Integrons and Staphylococcal Cassette Chromosome mec Types in Clinical Methicillin-resistant Coagulase Negative Staphylococci Strains
OBJECTIVES Integrons are thought to play an important role in the spread of antibiotic resistance. This study investigates class 1 and 2 integron-positive methicillin-resistant coagulase-negative staphylococci strains isolated in Iran and characterizes their patterns of antimicrobial resistance. METHODS Hundred clinical isolates of coagulase-negative staphylococci were characterized for integ...
متن کاملIsolation of methicillin-resistant coagulase-negative staphylococci from chickens.
Methicillin-resistant coagulase-negative staphylococci were isolated from the nares and skin of 1- to 8-week-old healthy chickens in three flocks from a farm. Isolation of methicillin-resistant coagulase-negative staphylococci was positive for 72 (25.7%) of the 280 chickens tested, with the frequency varying from 2.2 to 100% according to flock. A total of 45 appropriate isolates were selected a...
متن کاملCephalosporin susceptibility of methicillin-resistant, coagulase-negative staphylococci.
Coagulase-negative staphylococci were tested for susceptibility to methicillin, cephradine, ceftriaxone, cephalothin, and cefamandole by standard broth microdilution. Most of the 26 methicillin-resistant isolates were susceptible to cephalothin and cefamandole, but very few were susceptible to ceftriaxone, and none was susceptible to cephradine. The proportion of bacterial cells that grew in th...
متن کاملLocal variants of Staphylococcal cassette chromosome mec in sporadic methicillin-resistant Staphylococcus aureus and methicillin-resistant coagulase-negative Staphylococci: evidence of horizontal gene transfer?
The mecA gene in Staphylococcus aureus is located on the genetic element staphylococcal cassette chromosome (SCC). Different SCCmecs have been classified according to their putative recombinase genes (ccrA and ccrB) and overall genetic composition. Clinical isolates of coagulase-negative staphylococci (CoNS; n = 39) and S. aureus (n = 20) from Norway, India, Italy, Finland, the United States, a...
متن کاملShared reservoir of ccrB gene sequences between coagulase-negative staphylococci and methicillin-resistant Staphylococcus aureus.
OBJECTIVES Methicillin resistance in Staphylococcus aureus and coagulase-negative staphylococci (CoNS) is caused by expression of the low-affinity penicillin-binding protein (PBP) 2a encoded by the mecA gene. This gene is carried on the staphylococcal cassette chromosome mec (SCCmec) of which several types and subtypes have been described. CoNS and S. aureus share SCCmec types and it has been s...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 2011
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.05594-11