The Inhibitory Effects of Catechins on Biofilm Formation by the Periodontopathogenic Bacterium, Eikenella corrodens
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概要
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Eikenella corrodens is a periodontopathogenic bacterium that forms biofilm even by itself. In this study, we investigated the inhibitory effects of catechins on E. corrodens biofilm formation. Biofilm formation was inhibited by the addition of 1 mM of the catechins with the pyrogallol-type B-ring and/or the galloyl group. The catechins with the galloyl group were effective at smaller doses than those with only the pyrogallol-type B-ring. An inhibitory effect was observed even when these catechins and gallic acid were added at sub-minimal inhibitory concentration (MIC) or at concentrations that showed no bactericidal effect. These results suggest that some catechins at sub-MIC might inhibit biofilm formation. No inhibitory effect of catechins at sub-MIC on biofilm formation was observed in the luxS deletion mutant. Our studies suggest that some species of catechins with the galloyl group affect autoinducer 2-mediated quorum sensing and thereby inhibit biofilm formation by E. corrodens.
- 社団法人 日本農芸化学会の論文
著者
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EBISU Shigeyuki
Department of Restorative Dentistry and Endodontology, Osaka University Graduate School of Dentistry
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Azakami Hiroyuki
Department of Fermentation Technology, Faculty of Engineering, Hiroshima University
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KATO Akio
Department of Agricultural Chemistry, Yamaguchi University
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Matsunaga Tetsuro
Department of Biological Chemistry, Yamaguchi University
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Noiri Yuichiro
Department of Restorative Dentistry and Endodontology, Osaka University
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NAKAHARA Aya
Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University
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MINNATUL Karim
Department of Biological Chemistry, Faculty of Agriculture, Yamaguchi University
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