Research Article
Characterization of Integrons and Antimicrobial Resistance in Escherichia coli Sequence Type 131 Isolates
Table 3
Genes of resistance detected among E.coli ST131 strains with and without integrons.
| | Antibiotics | Integron-positive strains (n = 22) | Integron-negative strains (n = 61) | | No. of resistance isolates | Genes detected (no. of strains) | No. of resistance isolates | Genes detected (no. of strains) |
| | Ampicillin | — | blaTEM (11) | — | blaTEM (23) | | | blaOXA-1 (9) | | blaOXA-1 (1) | | Tetracycline | — | tetA (1) | — | tetA (20) | | | tetC (3) | | tetB (2) | | | tetA + tetB (6) | | tetC (8) | | | tetA + tetC(10) | | TetA + tetC (10) | | | | | tetB + tetC (1) | | Sulphonamide | 21 | sul1 (15) | 35 | sul1 (7) | | | sul2 (3) | | sul2 (5) | | | sul1 + sul2 (3) | | sul1 + sul2 (20) | | Ciprofloxaci | 16 | qnrB (2) | 43 | qnrS (1) | | | | | | | Streptomycin | — | aadA (2) | — | ND | | Kanamycin | — | ND | — | aphA1 (1) | | | | | aphA1 + aphA2 (1) | | Chloramphenicol | — | cmlA (1) | — | floR (2) | | | clmA + floR (1) | | |
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Not detected; ND:no gene detected |
