J. W. Betts
Antibacterial effects of theaflavin and synergy with epicatechin against clinical isolates of Acinetobacter baumannii and Stenotrophomonas maltophilia
Betts, J. W.; Kelly, S. M.; Haswell, S. J.
Professor Stephen Kelly S.M.Kelly@hull.ac.uk
S. J. Haswell
Stenotrophomonas maltophilia and Acinetobacter baumannii are recognised as important nosocomial pathogens; however, due to their intrinsic resistance to multiple antibiotics, treatment options are limited. Polyphenols from black tea have been shown to possess antibacterial action. In this study, the antibacterial effects of various concentrations of theaflavin as well as combinations of theaflavin and epicatechin were determined using the disk diffusion assay. The results showed strong antibacterial activity of theaflavin against eight clinical isolates of S. maltophilia and A. baumannii. Significant synergy (P ≤ 0.05) was also observed between theaflavin and epicatechin against all isolates. Although the mechanisms for this activity and synergy are not well understood, the clinical potential is clear and further research is recommended to determine the modes of action.
|Journal Article Type||Article|
|Journal||INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS|
|Peer Reviewed||Peer Reviewed|
|APA6 Citation||Betts, J. W., Kelly, S. M., & Haswell, S. J. (2011). Antibacterial effects of theaflavin and synergy with epicatechin against clinical isolates of Acinetobacter baumannii and Stenotrophomonas maltophilia. International journal of antimicrobial agents, 38(5), 421-425. https://doi.org/10.1016/j.ijantimicag.2011.07.006|
|Keywords||Antibacterial; Theaflavin; Epicatechin; Polyphenol; Synergy; Acinetobacter baumannii; Stenotrophomonas maltophilia|
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