TABLE 3.
Antibiotic | MIC (μg/ml) |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
1026b | Bp50 | Bp227 | Bp58 | Bp173 | Bp174 | Bp175 | Bp207 | Bp216 | Bp250 | |
Gentamicin | 512 | 2 | 256 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Kanamycin | 64 | 4 | 64 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Spectinomycin | 2,048 | 64 | 1,024 | 64 | 64 | 64 | 64 | 64 | 64 | 64 |
Streptomycin | >2,048 | 16 | 2,048 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
Clarithromycin | 128 | 8 | 64 | 32 | 32 | 16 | 2 | 0.5 | 0.5 | 4 |
Erythromycin | 128 | 8 | 128 | 32 | 32 | 16 | 2 | 0.5 | 0.5 | 4 |
Clindamycin | >4,096 | 4,096 | 2,048 | >4,096 | >4,096 | >4,096 | 512 | 128 | 128 | 4,096 |
Ciprofloxacin | 0.5 | 0.5 | 0.25 | 2 | 2 | 2 | 0.13 | 0.03 | 0.03 | 0.5 |
Norfloxacin | 4 | 4 | 2 | 16 | 16 | 8 | 1 | 0.25 | 0.25 | 4 |
Ofloxacin | 2 | 2 | 2 | 8 | 8 | 4 | 0.5 | 0.13 | 0.13 | 1 |
Doxycycline | 0.5 | 0.25 | 0.13 | 1 | 1 | 0.5 | 0.03 | 0.016 | 0.016 | 0.25 |
Tetracycline | 0.5 | 0.25 | 0.25 | 1 | 1 | 0.5 | 0.06 | 0.03 | 0.03 | 0.13 |
Chloramphenicol | 8 | 8 | 4 | 16 | 16 | 16 | 4 | 2 | 2 | 4 |
Carbenicillin | 512 | 512 | 512 | 512 | 512 | 512 | 512 | 512 | 512 | 512 |
Ceftazidime | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
Acriflavine | 32 | 16 | 16 | 64 | 64 | 32 | 1 | 0.5 | 0.5 | 16 |
The genotypes of the tested strains were as follows: Bp50, 1026b Δ(amrRAB-oprA); Bp58, Bp50 ΔbpeR; Bp173, Bp58 with mini-Tn7T; Bp174, Bp58 with mini-Tn7T expressing bpeR from its own promoter; Bp175, Bp58 with mini-Tn7T expressing bpeR from the P1 promoter; Bp207, Bp50 Δ(bpeAB-oprB); Bp216, Bp207 with mini-Tn7T; Bp227, 1026b Δ(bpeAB-oprB); Bp250, Bp207 with mini-Tn7T expressing 1026b bpeAB-oprB from its own promoter.