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Table 3 Antimicrobial resistance determinants of clinical S. Typhimurium isolates resistant to both ciprofloxacin and cephalosporins

From: The phenotypic and molecular characteristics of antimicrobial resistance of Salmonella enterica subsp. enterica serovar Typhimurium in Henan Province, China

Strain Years STs QRDR mutations PMQR genes β-Lactamase genes and types Macrolide resistance gene
gyrA parC qnrS aac(6′)-Ib-cr blaCTX-M blaOXA blaCMY-2 blaTEM-1 mphA
Sal0475 2006 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-55 blaOXA-1 blaCMY-2
Sal0485 2006 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-15 blaOXA-1
Sal0490 2007 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-55 blaOXA-1
Sal0496 2007 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-55 blaOXA-1
Sal0507 2008 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-15 blaOXA-1
Sal0515 2008 19 Ser83Phe, Asp87Asn Ser80Arg aac(6′)-Ib-cr blaCTX-55 blaOXA-1 blaTEM-1 mphA
Sal0525 2009 19 Ser83Phe, Asp87Asn Ser80Arg blaOXA-1
Sal0616 2010 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-14 blaOXA-1
Sal0552 2010 19 Ser83Phe, Asp87Asn Ser80Arg blaCTX-14 blaOXA-1
Sal0553 2010 19 Asp87Tyr WT blaOXA-1 mphA
Sal0572 2011 19 Ser83Phe, Asp87Asn Ser80Arg qnrS1 blaCTX-55 blaOXA-1
Sal0619 2012 19 Ser83Phe, Asp87Asn Ser80Arg qnrS1 aac(6′)-Ib-cr blaCTX-55 blaOXA-1
Sal0592 2013 19 Ser83Phe, Asp87Asn Ser80Arg qnrS1 blaOXA-1
  1. QRDR quinolone resistance-determining region, PMQR plasmid-mediated quinolone resistance, WT wild type
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