In vitro activity of certain antimicrobial agents in combination with Augouardia letestii hexane extracts against methicillin-resistant Staphylococcus aureus
2011; Academic Journals; Volume: 10; Issue: 65 Linguagem: Inglês
10.5897/ajb11.1876
ISSN1684-5315
AutoresW Obiang Obounou rice, Choi Jang Gi, Lee Young Seob, Kang Ok Hwa, Oh You Chang, Keum Joon Ho, M. Lamidi, Rho Jung Rae, Shin Dong Won, Kwon Dong Yeul,
Tópico(s)Psidium guajava Extracts and Applications
ResumoThe ability of methicillin-resistant Staphycoccus aureus to acquire resistance to most antibiotics is a worldwide concern that necessitated the study of the antimicrobial activity of the medicinal plant Augouardia lestestii alone and in combination with existing antibiotics. The minimum inhibitory concentration was determined by broth microdilution method and the evaluation of synergy was determined by the checkerboard dilution test. In this study, the antimicrobial activity of A. lestestii leaves, stem barks and roots were investigated against methicillin resistant S. aureus strains. The A. lestestii hexane fraction showed good antibacterial activity against all strains with minimum inhibitory concentration ranging from 125 to 250 μg/ml. Further, synergistic effects were observed for all antibiotics (ampicillin, norfloxacin, ciprofloxacin and erythromycin) except for nisin. The study also validated the traditional use of A. lestestii against infectious diseases. Key words: Augouardia lestestii, antimicrobial activity, synergistic combinations, drug-resistance.
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