TABLE 1.
Effect of different β-lactam antibiotics on E. coli DH5α overexpressing bla1 of A. baldaniorum Sp245
| Sample no. | Antibiotic (dose in μg) | Zone of inhibition (cm) for: |
|
|---|---|---|---|
| DH5α | DH5α (bla1↑) | ||
| 1 | Cefalexin (30) | 1.90 ± 0.14 | 0.00 ± 0.00 |
| 2 | Cefadroxil (30) | 1.95 ± 0.35 | 0.00 ± 0.00 |
| 3 | Cefazolin (30) | 2.00 ± 0.00 | 0.00 ± 0.00 |
| 4 | Cefoperazone (75) | 2.90 ± 0.14 | 0.00 ± 0.00 |
| 5 | Piperacillin (100) | 4.65 ± 0.21 | 0.00 ± 0.00 |
| 6 | Ticarcillin (75) | 4.90 ± 0.14 | 0.00 ± 0.00 |
| 7 | Cefaclor (30) | 3.10 ± 0.14 | 0.5 ± 0.71 |
| 8 | Carbenicillin (100) | 4.50 ± 0.14 | 1.15 ± 0.07 |
| 9 | Ampicillin (100) | 5.50 ± 0.00 | 1.20 ± 0.00 |
| 10 | Cefotaxime (30) | 5.45 ± 0.07 | 1.40 ± 0.14 |
| 11 | Cefuroxime (30) | 6.05 ± 0.35 | 1.70 ± 0.14 |
| 12 | Cefixime (5) | 3.45 ± 0.21 | 1.85 ± 0.07 |
| 13 | Ceftazidime (30) | 4.15 ± 0.21 | 2.05 ± 0.21 |
| 14 | Ceftriaxone (30) | 6.35 ± 0.21 | 2.15 ± 0.07 |
| 15 | Imipenem (10) | 5.70 ± 0.00 | 2.70 ± 0.00 |
| 16 | Aztreonam (30) | 5.65 ± 0.07 | 3.00 ± 0.14 |