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. 1990 Oct;105(2):355–361. doi: 10.1017/s0950268800047944

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

H Z Apperloo-Renkema 1, B D Van der Waaij 1, D Van der Waaij 1
PMCID: PMC2271895  PMID: 2209739

Abstract

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.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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