Table 2.

Susceptibilities of P. aeruginosa strains to selected antimicrobial agents

StrainMIC (μg/ml)a
CbTcGmCerTLM
PAO1757.51–5>100>100
PAO2000.75<0.50.57.525–50b
PAO200/pUCP21T NDc <0.5ND1025
PAO200/pPS952ND10ND>100>100
K337 Δ(mexAB-oprM)0.5<0.5ND5025
K337 Δ(mexAB-oprM)nfxBd 0.525ND>10025
  • a Susceptibilities to antimicrobial agents were tested as described in Materials and Methods. Cb, carbenicillin; Tc, tetracycline; Gm, gentamicin.

  • b Inhibition levels were somewhat dependent with different batches of TLM.

  • c ND, not determined.

  • d This nfxB strain expresses the MexCD-OprJ efflux system.