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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2011-5-26
pubmed:abstractText
We analyzed the prevalence of resistance to extended-spectrum cephalosporins (ESCs) among clinical strains of Salmonella enterica collected by the Laboratory of Clinical Microbiology in the University Clinical Hospital Lozano Blesa in the region of Aragón (Spain), for which very few epidemiological information exists. A total of 2,092 strains of S. enterica were identified in stool samples from patients with gastroenteritis. Five isolates showed an extended-spectrum beta-lactamase (ESBL) phenotype: four isolates of S. enterica serotype Virchow harbored the ESBL-encoding bla(CTX-M-9) gene and an isolate of serotype Enteritidis carried a bla(CTX-M-1) gene, which, to the best of our knowledge, is described here for the first time in this serotype of S. enterica. The five ESC-resistant isolates were also resistant to spectinomycin, streptomycin, kanamycin, sulfonamides, tetracycline, and trimethoprim as well as to nalidixic acid. The ESBL isolate of serotype Enteritidis, however, remained susceptible to kanamycin and nalidixic acid. A class 1 integron of 1.5?kb was detected for the four serotype Virchow isolates with the gene cassette dfrA16-aadA2. The bla(CTX-M-9) gene was carried by an ?300-kb IncHI2 conjugative plasmid in the case of the S. enterica serotype Virchow isolates. The bla(CTX-M-1) gene was carried by an ?100-kb IncI1-N conjugative plasmid for the serotype Enteritidis ESC-resistant isolate. All the four ESC-resistant strains of S. enterica serotype Virchow clustered together in a XbaI pulsed-field gel electrophoresis, which also revealed a strong similarity between them and some pulsotypes of S. enterica serotype Virchow from France.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1931-8448
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
17
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
207-13
pubmed:meshHeading
pubmed-meshheading:21235396-Anti-Bacterial Agents, pubmed-meshheading:21235396-Bacterial Typing Techniques, pubmed-meshheading:21235396-Cephalosporins, pubmed-meshheading:21235396-Drug Resistance, Multiple, Bacterial, pubmed-meshheading:21235396-Electrophoresis, Gel, Pulsed-Field, pubmed-meshheading:21235396-Feces, pubmed-meshheading:21235396-Gastroenteritis, pubmed-meshheading:21235396-Humans, pubmed-meshheading:21235396-Integrons, pubmed-meshheading:21235396-Microbial Sensitivity Tests, pubmed-meshheading:21235396-Phylogeny, pubmed-meshheading:21235396-Plasmids, pubmed-meshheading:21235396-Prevalence, pubmed-meshheading:21235396-Retrospective Studies, pubmed-meshheading:21235396-Salmonella Infections, pubmed-meshheading:21235396-Salmonella enterica, pubmed-meshheading:21235396-Spain, pubmed-meshheading:21235396-beta-Lactamases
pubmed:year
2011
pubmed:articleTitle
Prevalence and characterization of extended-spectrum beta-lactamases-producing Salmonella enterica isolates in Saragossa, Spain (2001-2008).
pubmed:affiliation
Institut Pasteur, Laboratoire des Bactéries Pathogènes Entériques, Centre National de Référence des Salmonella, Paris, France. mariapardos@yahoo.es
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't