Journal of Antimicrobial Chemotherapy (1999) 44, 291-293
© 1999 The British Society for Antimicrobial Chemotherapy
Correspondence |
Setting the standard for determining the in-vitro susceptibility of Helicobacter pylori to metronidazole
J Antimicrob Chemother 1999; 44: 291293
Department of Medical Microbiology, The Medical School, University of Edinburgh, Teviot Place, Edinburgh EH8 9AG, Scotland, UK
Sir,
Metronidazole is frequently included in regimens used to eradicate Helicobacter pylori. However, the rates of metronidazole resistance amongst H. pylori isolates are
highly variablefrom 11% to 70% in developed countries and even higher in developing
countries.
1 As susceptibility testing of H. pylorihas not been
standardized, it may be that variations in the rates of resistance can be accounted for by
differences in the methods of determining susceptibility. For example, Smith & Edwards
2 demonstrated that H. pylori NCTC 11637 is
resistant to metronidazole when tested under microaerophilic growth conditions, but susceptible
when tested under anaerobic
Notes
References