Table 2.

Antimicrobial susceptibilities of multiresistant clinical isolates and their transconjugants in E. coli HB101

StrainaMIC (μg/ml) ofb:
TICPIPCTXCAZFEPATMIPM
PAO3S328162442
PAO4 CAZ R, IPM R64128>12832321664
PAO3ESBL>1281664>12832322
TrPAO3ESBL>128160.5640.254ND
E. aerogenes >128648>1281161
TrE. aerogenes >128160.5640.254ND
E. coli >128160.51280.540.5
Tr E. coli >128160.5640.254ND
P. mirabilis >128160.1280.50.121
TrP. mirabilis >128160.5640.254ND
  • a Tr, transconjugant in E. coli HB101; PAO3 S, first susceptible P. aeruginosa strain isolated from wound; PAO4 CAZ R, IPM R, multidrug-resistant P. aeruginosa from sputum;PAO3 ESBL, ESBL-producing P. aeruginosa from urinary tract.

  • b TIC, ticarcillin; PIP, piperacillin; CTX, cefotaxime; CAZ, ceftazidime; FEP, cefepime; ATM, aztreonam; IPM, imipenem; ND, not determined.