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Determination of colonization resistance of the digestive tract by biotyping of Enterobacteriaceae

Published online by Cambridge University Press:  15 May 2009

H. Z. Apperloo-Renkema ,
B. D. Van der Waaij  and
D. Van der Waaij
H. Z. Apperloo-Renkema
Affiliation:
Laboratory for Medical Microbiology, State University of Groningen, Oostersingel 59, NL-9713 EZ Groningen, The Netherlands
B. D. Van der Waaij
Affiliation:
Laboratory for Medical Microbiology, State University of Groningen, Oostersingel 59, NL-9713 EZ Groningen, The Netherlands
D. Van der Waaij
Affiliation:
Laboratory for Medical Microbiology, State University of Groningen, Oostersingel 59, NL-9713 EZ Groningen, The Netherlands
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Summary

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In studies concerning the effect of antibiotics on faecal microflora, Colonization Resistance is an important parameter. Colonization Resistance correlates inversely with the number of different biotypes of Enterobacteriaceae isolated from faecal samples. Nine healthy volunteers were studied during 6 weeks, in order to determine the natural variation in the number of different biotypes of Enterobacteriaceae per faecal sample. The numbers of biotypes ranged from 1–15 per faecal sample, the mean number of biotypes varied between 2·6 and 7·3 different biotypes per faecal sample per healthy volunteer. Inter-individual variations of five biotypes in the mean number of biotypes per faecal sample are normal. We assessed the minimal number of faecal samples that should be taken for comprehensive biotyping so as to determine reliably the mean number of different biotypes representative for the Colonization Resistance of an individual. It was found that a minimum of four faecal samples was required.

Type
Research Article
Information
Epidemiology & Infection , Volume 105 , Issue 2 , October 1990 , pp. 355 - 361
Copyright
Copyright © Cambridge University Press 1990

References

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