Objectives: In this study we examined the in vitro synergistic effect of baicalin, the flavone constituent of Scutellaria spp., in combinations with oxytetracycline and tetracycline on the growth of Staphylococcus aureus. Methods: The MICs were determined by the broth microdilution method and the effect of combinations was evaluated according to the sum of fractional inhibitory concentration indices (FICIs). Results: Synergistic activity (FICI≤0.5) was observed for combinations of baicalin with oxytetracycline or tetracycline against 4 of 10 strains tested, whereas the baicalin/oxytetracycline combination possessed the strongest synergistic effect (FICI=0.418). Conclusions: Baicalin acts synergistically with oxytetracycline and tetracycline, enhancing its antimicrobial activity against S. aureus, including methicillin- and tetracycline-resistant strains. © The Author 2011. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved.
CITATION STYLE
Novy, P., Urban, J., Leuner, O., Vadlejch, J., & Kokoska, L. (2011). In vitro synergistic effects of baicalin with oxytetracycline and tetracycline against Staphylococcus aureus. Journal of Antimicrobial Chemotherapy, 66(6), 1298–1300. https://doi.org/10.1093/jac/dkr108
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