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Intestinal mucosal adherence and translocation of commensal bacteria at the early onset of type 2 diabetes: molecular mechanisms and probiotic treatment

Open access
Amar, Jacques, Chabo, Chantal, Waget, Aurélie, Klopp, Pascale, Vachoux, Christelle, Bermúdez‐Humarán, Luis G., Smirnova, Natalia, Bergé, Mathieu, Sulpice, Thierry, Lahtinen, Sampo, Ouwehand, Arthur, Langella, Philippe, Rautonen, Nina, Sansonetti, Philippe J., Burcelin, Rémy·2011·EMBO Molecular Medicine

Abstract

A fat-enriched diet modifies intestinal microbiota and initiates a low-grade inflammation, insulin resistance and type-2 diabetes. Here, we demonstrate that before the onset of diabetes, after only one week of a high-fat diet (HFD), live commensal intestinal bacteria are present in large numbers in the adipose tissue and the blood where they can induce inflammation. This translocation is prevented in mice lacking the microbial pattern recognition receptors Nod1 or CD14, but overtly increased in Myd88 knockout and ob/ob mouse. This 'metabolic bacteremia' is characterized by an increased co-localization with dendritic cells from the intestinal lamina propria and by an augmented intestinal mucosal adherence of non-pathogenic Escherichia coli. The bacterial translocation process from intestine towards tissue can be reversed by six weeks of treatment with the probiotic strain Bifidobacterium animalis subsp. lactis 420, which improves the animals' overall inflammatory and metabolic status. Altogether, these data demonstrate that the early onset of HFD-induced hyperglycemia is characterized by an increased bacterial translocation from intestine towards tissues, fuelling a continuous metabolic bacteremia, which could represent new therapeutic targets.

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Metadata

Authors
Amar, J., Chabo, C., Waget, A., Klopp, P., Vachoux, C., Bermúdez‐Humarán, L. G., Smirnova, N., Bergé, M., Sulpice, T., Lahtinen, S., Ouwehand, A., Langella, P., Rautonen, N., Sansonetti, P. J., & Burcelin, R.
Venue
EMBO Molecular Medicine
Published
2011-08-03
Volume
3
Issue
9
Pages
559-572
ISSN
  • 1757-4676 (ISSN-L)
  • 1757-4684
OpenAlex
W2165857119
Cited by
836
References
17
FWCI
14.46
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Intestinal mucosal adherence and translocation of commensal bacteria at the early onset of type 2 diabetes: molecular mechanisms and probiotic treatment. https://app.cochat.ai/papers/10.1002/emmm.201100159
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Amar, J., Chabo, C., Waget, A., Klopp, P., Vachoux, C., Bermúdez‐Humarán, L. G., Smirnova, N., Bergé, M., Sulpice, T., Lahtinen, S., Ouwehand, A., Langella, P., Rautonen, N., Sansonetti, P. J., & Burcelin, R. (2011). Intestinal mucosal adherence and translocation of commensal bacteria at the early onset of type 2 diabetes: molecular mechanisms and probiotic treatment. EMBO Molecular Medicine. https://doi.org/10.1002/emmm.201100159

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.