IMMEDIATE OPEN ACCESS ARTICLE
J Med Microbiol 58 (2009), 1533-1541; DOI: 10.1099/jmm.0.014092-0
© 2009 Society for General Microbiology
ISSN 0022-2615
Effect of bile salts on the DNA and membrane integrity of enteric bacteria
Megan E. Merritt and
Janet R. Donaldson
Department of Biological Sciences, Mississippi State University, Box GY, Mississippi State, MS 39762, USA
Correspondence
Janet R. Donaldson
donaldson{at}biology.msstate.edu
Enteric bacteria are able to resist the high concentrations of bile encountered throughout the gastrointestinal tract. Here we review the current mechanisms identified in the enteric bacteria Salmonella, Escherichia coli, Bacillus cereus and Listeria monocytogenes to resist the dangerous effects of bile. We describe the role of membrane transport systems, and their connection with DNA repair pathways, in conferring bile resistance to these enterics. We discuss the findings from recent investigations that indicate bile tolerance is dependent upon being able to resist the detergent properties of bile at both the membrane and DNA level.
Copyright © 2009 Society for General Microbiology.