TABLE 2.
The minimum inhibitory concentration (MIC) and FICI values for colistin/plumbagin combination against colistin-resistant Pseudomonas aeruginosa isolates.
| MIC (μ g/ml) | FIC (μ g/ml) | FICI | Interpretation | |||
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| Strains | colistin | plumbagin | colistin | plumbagin | ||
| TL1671 | 8 | >256 | 0.25 | 8 | 0.047 | Synergy |
| TL1736 | 8 | >256 | 2 | 2 | 0.254 | Synergy |
| TL2314 | 4 | >256 | 0.06 | 8 | 0.031 | Synergy |
| TL2917 | 4 | >256 | 0.5 | 8 | 0.141 | Synergy |
| TL2967 | 4 | >256 | 0.5 | 16 | 0.156 | Synergy |
| TL3008 | 64 | 128 | 1 | 16 | 0.141 | Synergy |
| TL3086 | 128 | >256 | 1 | 8 | 0.023 | Synergy |
FICI, fractional inhibitory concentration index.