Table 3.
The antibacterial activity of selected compounds against drug-resistant bacterial strains (μg/mL).
| Cpd. | S. aureus ATCC BAA41a | S. aureus ATCC 33591a | S. aureus ATCC 43300a | E. faecalis ATCC 51575b | E. faecium ATCC 700221b | E. coli ATCC BAA2469c | P. aeruginosa ATCC BAA2108d |
|---|---|---|---|---|---|---|---|
| A1 | 4 | 4 | 4 | 8 | 8 | 12 | 32 |
| A2 | 1.5 | 1.5 | 1.5 | 2 | 2 | 3 | 6 |
| A3 | 2 | 2 | 2 | 4 | 4 | 6 | 24 |
| A5 | 2 | 2 | 2 | 2 | 2 | 3 | 8 |
| A6 | 4 | 4 | 4 | 6 | 6 | 12 | 24 |
| A7 | 4 | 4 | 4 | 8 | 8 | 12 | 32 |
| Berberine | 192 | 192 | 192 | >192 | >192 | >192 | >192 |
| Methicillin | >192 | >192 | >192 | 6 | 6 | >192 | >192 |
| Vancomycin | 2 | 2 | 2 | >64 | >64 | 6 | >64 |
a
Methicillin-resistant S. aureus.
b
Vancomycin-resistant strains.
c
E. coli expressing NDM-1 beta-lactamase.
d
A multidrug-resistant strain.