Species | mcr-1 confirmation | Antibiotics | MIC (µg/mL) | ||
---|---|---|---|---|---|
Alone | Combination | FIC Index | |||
E. coli ATCC 25,922 | – | Colistin | 1.50 ± 0.58 | 1.06 ± 0.18 | 1.06 ± 0.16 |
K. pneumoniae ZJ02 | + | Colistin | 48 ± 18.48 | 2.0 ± 0.00 | 0.11 ± 0.12 |
Cephalothin sodium | 1024.00 ± 0.00 | 853.33 ± 295.60 | 1.08 ± 0.29 | ||
Penicillin | 853.3 ± 295.60 | 1024 ± 0.00 | 1.08 ± 0.29 | ||
meropenem | 0.50 ± 0.00 | 0.50 ± 0.00 | 1.08 ± 0.29 | ||
Streptomycin | 682.67 ± 295.60 | 512 ± 0.00 | 1.25 ± 0.00 | ||
Kanamycin | 512.00 ± 0.00 | 426.67 ± 147.80 | 1.08 ± 0.29 | ||
Gentamycin | 853.33 ± 295.60 | 853.33 ± 295.60 | 1.25 ± 0.00 | ||
Chloramphenicol | 682.67 ± 295.60 | 682.67 ± 295.60 | 1.25 ± 0.00 | ||
Erythromycin | 256.00 ± 0.00 | 170.67 ± 73.90 | 0.92 ± 0.29 | ||
Acheomycin | 341.33 ± 147.80 | 213.33 ± 73.90 | 0.92 ± 0.29 | ||
Ciprofloxacin | 426.67 ± 147.80 | 384 ± 221.70 | 1.08 ± 0.29 | ||
Salmonella sp. strain HYM2 | + | Colistin | 21.33 ± 9.24 | 1.33 ± 0.58 | 0.07 ± 0.05 |
Cephalothin sodium | 42.67 ± 18.48 | 32.00 ± 0.00 | 0.84 ± 0.29 | ||
Penicillin | 21.33 ± 9.24 | 21.33 ± 9.24 | 1.00 ± 0.00 | ||
meropenem | 0.10 ± 0.04 | 0.08 ± 0.04 | 0.83 ± 0.29 | ||
Streptomycin | 341.33 ± 147.80 | 213.33 ± 73.90 | 0.72 ± 0.30 | ||
Kanamycin | 682.67 ± 295.60 | 426.67 ± 147.80 | 0.77 ± 0.31 | ||
Gentamycin | 853.33 ± 295.60 | 682.67 ± 295.60 | 1.00 ± 0.33 | ||
Chloramphenicol | 426.67 ± 147.80 | 256.00 ± 0.00 | 0.73 ± 0.29 | ||
Erythromycin | 213.33 ± 73.90 | 170.67 ± 73.90 | 0.875 ± 0.30 | ||
Acheomycin | 512 ± 0.00 | 341.33 ± 147.80 | 0.75 ± 0.32 | ||
Ciprofloxacin | 6.67 ± 2.31 | 5.33 ± 2.31 | 0.83 ± 0.29 | ||
E. coli DH5α (pUC19-mcr-1) | + | Colistin | 10.67 ± 4.62 | 2.00 ± 0.00 | 0.21 ± 0.072 |
E. coli ZJ478 | + | Colistin | 13.33 ± 4.62 | 2.00 ± 0.00 | 0.17 ± 0.07 |
E. coli ZJ40 | + | Colistin | 53.33 ± 18.48 | 2.67 ± 1.15 | 0.05 ± 0.02 |
Salmonella GP9 | – | Colistin | 26.67 ± 9.24 | 21.33 ± 9.24 | 1.08 ± 0.29 |
Salmonella ZZW20 (mcr-8 positive) | + | Colistin | 42.67 ± 18.48 | 10.67 ± 4.62 | 0.29 ± 0.19 |
Salmonella sp. strain 15E464 (mcr-3 positive) | + | Colistin | 53.33 ± 18.48 | 5.33 ± 2.31 | 0.10 ± 0.04 |