Table 1.
Fractional inhibitory concentration index (FICI) for colistin/chrysin combinations against Acinetobacter baumannii.
| Strains | Monotherapy (μg/ml) | Combination (μg/ml) | FICI | Interpretation | ||
|---|---|---|---|---|---|---|
| Colistin | Chrysin | Colistin | Chrysin | |||
| ATCC 19606 | 0.125 | >128 | 0.031 | 1 | 0.256 | Synergistic |
| BM 1539-S | 1 | >128 | 0.125 | 2 | 0.141 | Synergistic |
| BM 1579-S | 1 | >128 | 0.125 | 8 | 0.188 | Synergistic |
| BM 2349 | 8 | >128 | 0.125 | 8 | 0.078 | Synergistic |
| BM 2412 | 8 | >128 | 0.125 | 4 | 0.078 | Synergistic |
| BM 2431 | 16 | >128 | 0.125 | 8 | 0.047 | Synergistic |
| BM 2370 | 8 | >128 | 0.125 | 8 | 0.070 | Synergistic |
| BM 2622 | 8 | >128 | 0.125 | 8 | 0.078 | Synergistic |
Values in bold indicate resistance.