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. 2004 Aug;48(8):3179-81.
doi: 10.1128/AAC.48.8.3179-3181.2004.

Extended-spectrum-cephalosporin resistance in Salmonella enterica isolates of animal origin

Jeffrey T Gray  1 , Laura L Hungerford, Paula J Fedorka-Cray, Marcia L Headrick
Affiliations

Extended-spectrum-cephalosporin resistance in Salmonella enterica isolates of animal origin

Jeffrey T Gray et al. Antimicrob Agents Chemother. 2004 Aug.

Abstract

A total of 112 out of 5,709 Salmonella enterica isolates from domestic animal species exhibited decreased susceptibilities to ceftiofur and ceftriaxone, and each possessed the blaCMY gene. Ten Salmonella serotypes were significantly more likely to include resistant isolates. Isolates from turkeys, horses, cats, and dogs were significantly more likely to include resistant isolates.

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Figures

FIG. 1.
FIG. 1.
Southern blot analysis of plasmid hybridization with PCR-amplified blacmy gene probes. Lane 1, supercoiled ladder; lane 2, positive control, S. enterica serotype Typhimurium, extended-spectrum-cephalosporin-resistant isolates; lane 3, S. enterica serotype Typhimurium 42/98; lane 4, S. enterica serotype Typhimurium-Copenhagen 4/97; lane 5, S. enterica serotype Typhimurium-Copenhagen 36/98; lane 6, S. enterica serotype Bredeney 72/98; lane 7, S. enterica serotype Heidelberg 61/98; lane 8, S. enterica serotype Newport 11/98; lane 9, S. enterica serotype Reading 57/98; lane 10, negative control, S. enterica serotype Typhimurium 798; lane 11, labeled lambda marker (23, 9.4, 6.5, 4.3, 2.3, and 2.0 kb). The arrow indicates native plasmid hybridization.
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