The anti-biofilm and anti-virulence activities of trans- resveratrol and oxyresveratrol against uropathogenic Escherichia coli

Biofouling. 2019 Aug;35(7):758-767. doi: 10.1080/08927014.2019.1657418. Epub 2019 Sep 10.


Uropathogenic Escherichia coli (UPEC) is the primary causative agent of urinary tract infections, which are one of the most common infectious disease types in humans. UPEC infections involve bacterial cell adhesion to bladder epithelial cells, and UPEC can also form biofilms on indwelling catheters that are often tolerant to common antibiotics. In this study, the anti-biofilm activities of t-stilbene, stilbestrol, t-resveratrol, oxyresveratrol, ε-viniferin, suffruticosol A, and vitisin A were investigated against UPEC. t-Resveratrol, oxyresveratrol, and ε-viniferin, suffruticosol A, and vitisin A significantly inhibited UPEC biofilm formation at subinhibitory concentrations (10-50 μg ml-1). These findings were supported by observations that t-resveratrol and oxyresveratrol reduced fimbriae production and the swarming motility in UPEC. Furthermore, t-resveratrol and oxyresveratrol markedly diminished the hemagglutinating ability of UPEC, and enhanced UPEC killing by human whole blood. The findings show that t-resveratrol, oxyresveratrol, and resveratrol oligomers warrant further attention as antivirulence strategies against persistent UPEC infections.

Keywords: Biofilm; oxyresveratrol; resveratrol; urinary tract infections; uropathogenic; virulence.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bacterial Adhesion / drug effects
  • Biofilms*
  • Escherichia coli Proteins / metabolism
  • Fimbriae, Bacterial / metabolism
  • Plant Extracts / pharmacology*
  • Resveratrol / pharmacology*
  • Stilbenes / pharmacology*
  • Uropathogenic Escherichia coli / drug effects*
  • Uropathogenic Escherichia coli / physiology
  • Virulence / drug effects


  • Escherichia coli Proteins
  • Plant Extracts
  • Stilbenes
  • puag-haad
  • Resveratrol