TABLE 3

Antibiotic susceptibilities of representative isolates with plasmid-borne blaOXA-23 and their transconjugants and/or transformants

IsolateAntibiotica susceptibility by:
MIC (mg/liter)Inhibition zone (mm)
MEMIPMATMCAZFEPPRLSAMTZPAKCIPCNMH
A221b1286466666666616
A221-ADP1-rifr646418231466626292727
A221-17978643213191066620271923
A2964b6464666669610614
A2964-179786464131812661120241922
ADP1-rifr0.0940.09418252524242827302724
ATCC 179780.380.2515182020202421251821
  • a MEM, meropenem; IPM, imipenem; ATM, aztreonam; CAZ, ceftazidime; FEP, cefepime; PRL, piperacillin; SAM, ampicillin-sulbactam; TZP, piperacillin-tazobactam; AK, amikacin; CIP, ciprofloxacin; CN, gentamicin; MH, minocycline.

  • b A221 and A2964 carried the 78- and 50-kb plasmids, respectively.