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. 1983 May;45(5):1677–1684. doi: 10.1128/aem.45.5.1677-1684.1983

Colonization of gnotobiotic mice by Roseburia cecicola, a motile, obligately anaerobic bacterium from murine ceca.

T B Stanton, D C Savage
PMCID: PMC242515  PMID: 6870243

Abstract

In scrapings of mouse cecal mucosae, motile bacteria outnumbered nonmotile bacteria by a ratio of 2:1. Obligately anaerobic bacteria were obtained from such scrapings through the use of techniques designed for the selective isolation of motile bacteria. One of the isolates, Roseburia cecicola, was rapidly motile in broth by means of 20 to 35 flagella arranged in a fascicle on each cell. R. cecicola cells colonized germfree mice (3 x 10(9) to 1 x 10(10) CFU/g of cecum) within 11 days after the animals were inoculated intragastrically with 2 x 10(8) CFU per mouse. In such monoassociated gnotobiotes, the bacteria were found primarily in the cecum, dispersed in the lumen among particles of digesta, and in the mucus over the epithelial surface. Between 2 and 3 weeks after birth, offspring of monoassociated adult mice were colonized by the bacterium (2 x 10(9) to 1 x 10(10) CFU/g of cecum). These results indicate that R. cecicola is suitable for studies of the ecology of host-associated microorganisms, particularly for investigation of the role of motility and possibly also chemotaxis in bacterial colonization of the mammalian gastrointestinal tract.

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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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