Low concentrations of commercial alcohol hand rubs facilitate growth of and secretion of extracellular proteins by multidrug-resistant strains of Acinetobacter baumannii

J Med Microbiol. 2007 Dec;56(Pt 12):1595-1599. doi: 10.1099/jmm.0.47442-0.

Abstract

Acinetobacter baumannii is increasingly recognized as an important multidrug-resistant nosocomial pathogen. Recent work has highlighted enhanced growth and heightened virulence in the presence of ethyl alcohols. As alcohol-based hand rubs (ABHRs) are extensively used in health care settings, the authors set out to determine whether the hand rubs could also influence the growth of prevalent multidrug-resistant strains circulating in UK hospitals. A significant increase in growth was observed when minimal media were supplemented with concentrations of 1% and lower of four commercially available hand rubs. In addition, growth in ABHR-supplemented media resulted in secretion of proteins into the culture supernatant. One of these was identified as OmpA, which is recognized as having emulsifying activity, which could potentially confer enhanced pathogenicity to A. baumannii.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acinetobacter Infections / prevention & control
  • Acinetobacter baumannii / drug effects
  • Acinetobacter baumannii / growth & development*
  • Acinetobacter baumannii / physiology*
  • Alcohols / adverse effects
  • Alcohols / pharmacology*
  • Anti-Infective Agents, Local / adverse effects
  • Drug Resistance, Multiple, Bacterial*
  • Hand Disinfection / methods*
  • Infection Control / methods

Substances

  • Alcohols
  • Anti-Infective Agents, Local