Canadian Journal of Infectious Diseases and Medical Microbiology

Canadian Journal of Infectious Diseases and Medical Microbiology / 1992 / Article

Review | Open Access

Volume 3 |Article ID 793607 | https://doi.org/10.1155/1992/793607

George G Zhanel, Daryl J Hoban, Godfrey KM Harding, "Subinhibitory Antimicrobial Concentrations: A Review of In Vitro and In Vivo Data", Canadian Journal of Infectious Diseases and Medical Microbiology, vol. 3, Article ID 793607, 9 pages, 1992. https://doi.org/10.1155/1992/793607

Subinhibitory Antimicrobial Concentrations: A Review of In Vitro and In Vivo Data

Received27 Jul 1990
Accepted23 Mar 1991

Abstract

Antimicrobial activity is not an ‘all or none’ effect. An increase in the rate and extent of antimicrobial action is usually observed over a wide range of antimicrobial concentrations. Subinhibitory antimicrobial concentrations are well known to produce significant antibacterial effects, and various antimicrobials at subinhibitory concentrations have been reported to inhibit the rate of bacterial growth. Bacterial virulence may be increased or decreased by subinhibitory antimicrobial concentrations by changes in the ability of bacteria to adhere to epithelial cells or by alterations in bacterial susceptibility to host immune defences. Animal studies performed in rats, hamsters and rabbits demonstrate decreased bacterial adherence, reduced infectivity and increased survival of animals treated with subinhibitory antimicrobial concentrations compared to untreated controls. The major future role of investigation of subinhibitory antimicrobial concentrations will be to define more fully, at a molecular level, how antimicrobials exert their antibacterial effects.

Copyright © 1992 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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