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Development and validation of a new dynamic in vitro model of the piglet colon (PigutIVM): application to the study of probiotics.

Abstract：

:For ethical, technical, regulatory, and cost reasons, in vitro methods are increasingly used as an alternative to in vivo experimentations. The aim of the present study was to validate, according to in vivo data in living animals, a new in vitro model of the piglet colon, the PigutIVM, under both control conditions and antibiotic disturbance by the widely used colistin. The PigutIVM reproduces the main biotic and abiotic parameters of the piglet colon: temperature, pH, retention time, supply of ileal effluents, complex, and metabolically active microbiota and self-maintained anaerobiosis. Under both control and antibiotic-treated conditions, qPCR analyses showed that the main bacterial populations of piglet gut microbiota were similar in vitro and in vivo, with Pearson correlation coefficient higher than 0.9. During colistin administration, both in piglets and in the in vitro model, a significant decrease in Escherichia coli populations was observed together with changes in microbial composition of subdominant populations. SCFA concentrations were similar in vitro and in vivo and were not modified by colistin. Interestingly, the administration of the probiotic Saccharomyces cerevisiae var. boulardii CNCM I-1079 led in vitro to a decrease in E. coli levels, as previously observed when the antibiotic treatment was applied. This new in vitro model of the piglet colon provides a flexible, reproducible, and cost-effective tool for the screening of drugs or new dietary compounds, such as pre- or probiotics. It will be helpful for researchers, feed producers, or veterinarians when developing innovative non-antibiotic strategies.

journal_name

Appl Microbiol Biotechnol

journal_title

Applied microbiology and biotechnology

authors

Fleury MA,Le Goff O,Denis S,Chaucheyras-Durand F,Jouy E,Kempf I,Alric M,Blanquet-Diot S

doi

10.1007/s00253-017-8122-y

subject

Has Abstract

pub_date

2017-03-01 00:00:00

pages

2533-2547

issue

6

eissn

0175-7598

issn

1432-0614

pii

10.1007/s00253-017-8122-y

journal_volume

101

pub_type

杂志文章

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