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Distribution, characterization and genetic bases of erythromycin resistance in staphylococci and enterococci originating from livestock
Z. Jaglic, H. Vlkova, J. Bardon, E. Michu, D. Cervinkova, V. Babak
Language English Country Germany
Document type Evaluation Study, Journal Article, Research Support, Non-U.S. Gov't
NLK
Medline Complete (EBSCOhost)
from 2007-01-01 to 1 year ago
Wiley Online Library (archiv)
from 1997-01-01 to 2012-12-31
- MeSH
- Anti-Bacterial Agents pharmacology MeSH
- Genes, Bacterial drug effects MeSH
- Drug Resistance, Bacterial genetics MeSH
- Bacterial Proteins genetics metabolism MeSH
- Enterococcus drug effects genetics isolation & purification MeSH
- Erythromycin pharmacology MeSH
- Phenotype MeSH
- Genotype MeSH
- Turkeys MeSH
- Lincosamides pharmacology MeSH
- Macrolides pharmacology MeSH
- Microbial Sensitivity Tests MeSH
- Poultry Diseases MeSH
- Swine MeSH
- Prevalence MeSH
- Cattle MeSH
- Staphylococcal Infections drug therapy epidemiology MeSH
- Staphylococcus drug effects genetics isolation & purification MeSH
- Streptogramin B pharmacology MeSH
- Animals MeSH
- Check Tag
- Cattle MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Evaluation Study MeSH
- Research Support, Non-U.S. Gov't MeSH
The occurrence of staphylococci and enterococci expressing increased resistance to erythromycin (ERY) and, in particular, to macrolide-lincosamide-streptogramin B (MLS(B) ) antibiotics was investigated in dairy cattle, pigs and turkeys. Three hundred rectal (cloacal) swabs of each animal species were examined. A total of 120 and 71 staphylococci and enterococci, respectively, with increased resistance to ERY were identified. These were most frequent in turkeys (42.3% of positive animals), followed by pigs and dairy cattle (6.7% and 6.0% of positive animals, respectively). Similarly, MLS(B) -resistant isolates colonized predominantly turkeys (29.7% of animals), while their occurrence in pigs and dairy cattle was only sporadic (0.8% of animals). At least one of the erm genes encoding for MLS(B) resistance was found in 56.7% and 69.0% of staphylococci and enterococci, respectively. The erm(C) gene prevailed in staphylococci while the erm(B) gene was predominant in enterococci. Macrolide efflux genes msr(A) and msr(C) were also frequent in staphylococci and enterococci, respectively. Macrolide inactivation gene mph(C) occurred mainly in staphylococci. In staphylococci, methicillin resistance was rarely detected (7.5% of isolates), but resistance to telithromycin (ketolides) was frequent in both staphylococci and enterococci (89.2% and 47.9% of isolates, respectively). This study showed that turkeys represent an important source of ERY (MLS(B) )-resistant cocci. In addition, resistance to ketolides was also frequent.
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