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An overview on anti-biofilm properties of quercetin against bacterial pathogens

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Abstract

Bacterial biofilms are multicellular aggregates enclosed in a self-created biopolymer matrix. Biofilm-producing bacteria have become a great public health problem worldwide because biofilms enable these microorganisms to evade several clearance mechanisms produced by host and synthetic sources. Over the past years, different flavonoids including quercetin have engrossed considerable interest among researchers owing to their potential anti-biofilm properties. To our knowledge, there is no review regarding effects of quercetin towards bacterial biofilms, prompting us to summarize experimental evidence on its anti-biofilm properties. Quercetin inhibits biofilm development by a diverse array of bacterial pathogens such as Enterococcus faecalis, Staphylococcus aureus, Streptococcus mutans, Escherichia coli, and Pseudomonas aeruginosa. Prevention of bacterial adhesion, suppression of quorum-sensing pathways, disruption or alteration of plasma membrane, inhibition of efflux pumps, and blocking nucleic acid synthesis have been documented as major anti-biofilm mechanisms of quercetin. Overall, anti-biofilm activity of quercetin can open up new horizons in a wide range of biomedical areas, from food industry to medicine.

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HM and MM wrote the manuscript. AG and MM performed data collection and management. MM and HM contributed to revision of the manuscript.

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Correspondence to Mojtaba Memariani.

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The authors declare that they have no conflict of interest.

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Memariani, H., Memariani, M. & Ghasemian, A. An overview on anti-biofilm properties of quercetin against bacterial pathogens. World J Microbiol Biotechnol 35, 143 (2019). https://doi.org/10.1007/s11274-019-2719-5

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  • DOI: https://doi.org/10.1007/s11274-019-2719-5

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