em In vitro em drug interactions of gallates with antibiotics in em Staphylococcus Aureus em

Autor: Meena Kishore Sakharkar, Win Mar Soe, Chu Sing Lim L, Tzer Pin Lin R, Kishore R. Sakharkar
Rok vydání: 2010
Předmět:
Zdroj: Frontiers in Bioscience. :668-672
ISSN: 1945-0508
1945-0494
DOI: 10.2741/e126
Popis: The antimicrobial activities of tetracycline, mupirocin, and fusidic acid are tested in combination with Epicatechin Gallate (ECG), and Ethyl Gallate (EG) using 2 Methicillin resistant (MRSA) and 2 Methicillin sensitive (MSSA) strains of Staphylococcus aureus. Sub-inhibitory concentration of EG at 256 mg l-1 is found to be synergistic when used in combination with tetracycline, mupirocin, and fusidic acid; and a sub-inhibitory concentration of ECG at 32 mg l-1 is found to be synergistic with tetracycline in all the four Staphylococcus aureus strains tested. The synergistic combinations reduce the MICs of all the above three antibiotics by 4 fold. Combining ECG at 32 mg l-1 with mupirocin, reduces the MIC of mupirocin by four fold in MSSA C1 strain. 74 per cent of the combinations show consistent results in both time-kill assay and checkerboard method. The identified combinations may lead towards novel therapeutic interventions for treating MRSA infections.
Databáze: OpenAIRE