期刊
CHEMOTHERAPY
卷 54, 期 4, 页码 328-330出版社
KARGER
DOI: 10.1159/000151267
关键词
Mentha arvensis; modifying antibiotic activity; ethanolic extract; gentamicin; chlorpromazine
Background: This is the first report testing the antibiotic resistance-modifying activity of Mentha arvensis. Methods: In this study an ethanol extract of M. arvensis L. and chlorpromazine were tested for their antimicrobial activity alone or in combination with conventional antibiotics against strains of Escherichia coli. Results: The growth of two E. coli strains tested was not inhibited by the extract. The minimum inhibitory concentration and minimal bactericide concentration values were >= 1 mg/ml for both strains of E. coli used. A potentiating effect of this extract on gentamicin was demonstrated. Similarly, there was a potentiating effect of chlorpromazine on kanamycin, amikacin and tobramycin, indicating the involvement of an efflux system in the resistance to these aminoglycosides. Conclusions: It is therefore suggested that extracts from M. arvensis could be used as a source of plant-derived natural products with resistance-modifying activity, such as in the case of gentamicin, constituting a new weapon against bacterial resistance to antibiotics, as with chlorpromazine. Copyright (C) 2008 S. Karger AG, Basel.
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