Table 3.
Antibiotic susceptibilities of blaCTX-M-55-positive and their transconjugants
| Isolate | Antibiotica susceptibility (μg/ml) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SAM | TZP | CTX | CAZ | CTT | FEP | IPM | ETP | AMK | GEN | LVX | CIP | |
| EC30 | > 256 | > 256 | > 256 | > 256 | > 256 | > 256 | < 1 | 2 | < 2 | 64 | > 32 | > 32 |
| EC32 | > 256 | 8 | > 256 | > 256 | 8 | > 256 | < 1 | 1 | < 2 | 64 | 16 | 8 |
| EC44 | > 256 | 8 | > 256 | > 256 | 8 | > 256 | < 1 | <0.5 | < 2 | 32 | 16 | 8 |
| EC45 | > 256 | 64 | > 256 | > 256 | 32 | > 256 | < 1 | <0.5 | < 2 | 32 | 16 | 8 |
| EC52 | > 256 | 8 | > 256 | > 256 | 8 | 2 | < 1 | <0.5 | < 2 | 64 | > 32 | 8 |
| EC54 | > 256 | 8 | > 256 | > 256 | 8 | 16 | < 1 | <0.5 | < 2 | 32 | 16 | 8 |
| EC67 | > 256 | > 256 | > 256 | > 256 | >256 | > 256 | < 1 | 2 | < 2 | 32 | > 32 | 8 |
| KP26 | > 256 | 64 | > 256 | > 256 | 32 | > 256 | < 1 | 1 | < 2 | 32 | > 32 | 8 |
| KP37 | > 256 | > 256 | > 256 | > 256 | > 256 | > 256 | 8 | 2 | < 2 | 32 | 16 | 8 |
| KP146 | > 256 | 64 | > 256 | > 256 | > 256 | > 256 | 8 | 2 | < 2 | 64 | > 32 | 8 |
| CF547 | > 256 | 8 | > 256 | 64 | 8 | > 256 | < 1 | < 0.5 | < 2 | 64 | 16 | 8 |
| MM556 | > 256 | 64 | > 256 | > 256 | > 256 | 2 | < 1 | < 0.5 | < 2 | 32 | 16 | 8 |
| SM554 | > 256 | 8 | > 256 | 64 | 8 | > 256 | 8 | < 0.5 | 4 | 32 | 16 | 8 |
| E. coil transconjugants | ||||||||||||
| EC30-C600 | > 256 | 64 | > 256 | > 256 | > 256 | > 256 | < 1 | 2 | < 2 | 64 | < 0.25 | < 0.25 |
| EC32-C600 | > 256 | 8 | > 256 | > 256 | 8 | 8 | < 1 | 1 | < 2 | 32 | < 0.25 | < 0.25 |
| EC44-C600 | > 256 | 8 | 128 | 64 | 4 | 4 | < 1 | < 0.5 | < 2 | 32 | < 0.25 | < 0.25 |
| EC45-C600 | > 256 | 32 | > 256 | > 256 | 32 | 16 | < 1 | < 0.5 | < 2 | 16 | < 0.25 | < 0.25 |
| EC52-C600 | > 256 | 8 | > 256 | 128 | 8 | 2 | < 1 | < 0.5 | < 2 | 32 | < 0.25 | < 0.25 |
| EC54-C600 | > 256 | 8 | 128 | > 256 | 8 | 16 | < 1 | < 0.5 | < 2 | 32 | < 0.25 | < 0.25 |
| EC67-C600 | > 256 | > 256 | > 256 | 128 | > 256 | > 256 | < 1 | 2 | < 2 | 16 | < 0.25 | < 0.25 |
| KP26-C600 | > 256 | 32 | > 256 | > 256 | 16 | 8 | < 1 | 1 | < 2 | 32 | < 0.25 | < 0.25 |
| KP37-C600 | > 256 | 64 | 64 | 128 | > 256 | 8 | 8 | 2 | < 2 | 16 | < 0.25 | < 0.25 |
| KP146-C600 | > 256 | 32 | > 256 | > 256 | > 256 | > 256 | 8 | 2 | < 2 | 64 | < 0.25 | < 0.25 |
| CF547-C600 | > 256 | 4 | > 256 | 64 | 8 | 32 | < 1 | < 0.5 | < 2 | 32 | < 0.25 | < 0.25 |
| MM556-C600 | > 256 | 64 | 64 | > 256 | > 256 | 2 | < 1 | < 0.5 | < 2 | 16 | < 0.25 | < 0.25 |
| SM554-C600 | > 256 | 8 | > 256 | 64 | 8 | 32 | 8 | < 0.5 | 4 | 32 | < 0.25 | < 0.25 |
| EC-C600 | < 2 | < 4 | < 1 | < 1 | < 4 | < 1 | < 1 | < 0.5 | < 2 | < 1 | < 0.25 | < 0.25 |
EC, E. coil; KP, K. pneumoniae; CF, C. freundii; MM, M. morganii; SM, S. marcescens
aSAM, ampicillin–sulbactam (1/0.5–256/128) [(μg/ml) for each agent, and the numbers in parentheses indicate the test range]; TZP, piperacillin–tazobactam (0.5/4–256/4); CTX, cefotaxime (0.03–256); CAZ, ceftazidime (0.03–256); CTT, cefotetan (0.03–256); FEP, cefepime (0.015–256); IPM, imipenem (0.06–32); ETP, ertapenem (0.004–32); AMK, amikacin (0.5–256); GEN, gentamicin (0.25–256); LVX, levofloxacin (0.008–32); CIP, ciprofloxacin (0.004–32)