Quorum sensing inhibitors of Staphylococcus aureus from Italian medicinal plants.
Quorum sensing inhibitors of Staphylococcus aureus from Italian medicinal plants.
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DOI:
10.1055/s-0030-1250145
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发表时间:
2011-01
期刊:
影响因子:
2.7
通讯作者:
Bennett BC
中科院分区:
文献类型:
--
作者:
Quave CL;Plano LR;Bennett BC
Morbidity and mortality estimates due to methicillin-resistant Staphylococcus aureus (MRSA) infections continue to rise. Therapeutic options are limited by antibiotic resistance. Anti-pathogenic compounds, which inhibit quorum sensing (QS) pathways, may be a useful alternative to antibiotics. Staphylococcal QS is encoded by the agr locus and is responsible for the production of δ-hemolysin. Quantification of δ-hemolysin found in culture supernatants permits the analysis of agr activity at the translational, rather than transcriptional, level. We employed RP-HPLC techniques to investigate the anti-QS activity of 168 extracts from 104 Italian plants through quantification of δ-hemolysin. Extracts from three medicinal plants (Ballota nigra, Castanea sativa, and Sambucus ebulus) exhibited a dose-dependent response in the production of δ-hemolysin, indicating strong anti-QS activity in a pathogenic MRSA isolate.
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通讯作者:
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