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Host–microbiota interaction induces bi-phasic inflammation and glucose intolerance in mice

Artikel i vetenskaplig tidskrift
Författare Antonio Molinaro
Robert Caesar
Louise Mannerås Holm
Valentina Tremaroli
P. D. Cani
Fredrik Bäckhed
Publicerad i Molecular Metabolism
Volym 6
Nummer/häfte 11
Sidor 1371-1380
ISSN 2212-8778
Publiceringsår 2017
Publicerad vid Wallenberglaboratoriet
Sidor 1371-1380
Språk en
Länkar doi.org/10.1016/j.molmet.2017.08.01...
Ämnesord Adiposity, Antibiotic, Colonization, Germ-free, Glucose metabolism, Microbiota, antibiotic agent, adipose tissue, animal experiment, animal model, animal tissue, Article, germfree mouse, glucose intolerance, host pathogen interaction, inflammation, intestine flora, male, microbial colonization, mouse, nonhuman, obesity, priority journal
Ämneskategorier Gastroenterologi

Sammanfattning

Objective Gut microbiota modulates adiposity and glucose metabolism in humans and mice. Here we investigated how colonization of germ-free (GF) mice affects kinetics of adiposity and glucose metabolism. Methods Adiposity and glucose metabolism were evaluated at different time points in ex-GF and antibiotic treated mice after colonization with gut microbiota from a conventionally raised (CONV-R) mouse. Mouse physiology, microbiome configuration, serum cytokine levels, and gene expression for inflammatory markers were performed in different tissues. Results Colonization resulted in a bi-phasic glucose impairment: the first phase occurring within 3 days of colonization (early phase) and the second 14–28 days after colonization (delayed phase). The early phase co-occurred with an inflammatory response and was independent of adiposity, while the delayed phase was mostly ascribed to adipose tissue expansion and inflammation. Importantly, re-colonization of antibiotic treated mice displays only the delayed phase of glucose impairment and adiposity, suggesting that the early phase may be unique to colonization of the immature GF mice gut. Conclusions Our results provide new insights on host–microbiota interaction during colonization of GF mice and the resulting effects on adiposity and glucose metabolism in a time resolved fashion. © 2017 The Authors

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