Table 4.
Analysis of occurrence of aminoglycoside resistance genotypes, resistance patterns to amikacin (AMK), gentamicin (GEN) and genes encoding OXA carbapenemases among Acinetobacter baumannii strains
| AME gene | N (%) | Resistance to AMK | Resistance to GEN | Resistance to AMK, GEN | blaOXA-23-like | blaOXA-24-like |
|---|---|---|---|---|---|---|
| aphA6 | 18 (22.5) | 15 (83.3) | 18 (100) | 15 (83.3) | 14 (77.7) | 2 (11.1) |
| aadA1 | 9 (11.25) | 6 (66.6) | 8 (88.8) | 6 (66.6) | 5 (55.5) | 3 (33.3) |
| aadB | 24 (30) | 21 (87.5) | 22 (91.6) | 21 (87.5) | 14 (58.3) | 7 (29.1) |
| aacC1 | 13 (16.25) | 10 (76.9) | 10 (76.9) | 8 (61.5) | 9 (69.2) | 2 (15.3) |
| aadB, aphA6 | 6 (7.5) | 6 (100) | 6 (100) | 6 (100) | 4 (66.6) | 1 (16.6) |
| aadB, aacC1, aphA6 | 2 (2.5) | 2 (100) | 2 (100) | 2 (100) | 2 (100.0) | 0 (0.0) |
| Negative | 8 (10) | 7 (87.5) | 5 (62.5) | 4 (50) | 7 (87.5) | 1 (12.5) |
| Total | 67% | 71% | 62% | 55% | 16% |
Data are presented as n (%) unless otherwise indicated. AME, aminoglycoside-modifying enzyme; CSF, cerebrospinal fluid.