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Impairment of gut microbial biotin metabolism and host biotin status in severe obesity: effect of biotin and prebiotic supplementation on improved metabolism

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Item Type:Article
Title:Impairment of gut microbial biotin metabolism and host biotin status in severe obesity: effect of biotin and prebiotic supplementation on improved metabolism
Creators Name:Belda, E. and Voland, L. and Tremaroli, V. and Falony, G. and Adriouch, S. and Assmann, K.E. and Prifiti, E. and Aron-Wisnewsky, J. and Debédat, J. and Le Roy, T. and Nielsen, T. and Amouyal, C. and André, S. and Andreelli, F. and Blüher, M. and Chakaroun, R. and Chilloux, J. and Coelho, L.P. and Dao, M.C. and Das, P. and Fellahi, S. and Forslund, S. and Galleron, N. and Hansen, T.H. and Holmes, B. and Ji, B. and Krogh Pedersen, H. and Le, P. and Le Chatelier, E. and Lewinter, C. and Mannerås-Holm, L. and Marquet, F. and Myridakis, A. and Pelloux, V. and Pons, N. and Quinquis, B. and Rouault, C. and Roume, H. and Salem, J.E. and Sokolovska, N. and Søndertoft, N.B. and Touch, S. and Vieira-Silva, S. and Galan, P. and Holst, J. and Gøtze, J.P. and Køber, L. and Vestergaard, H. and Hansen, T. and Hercberg, S. and Oppert, J.M. and Nielsen, J. and Letunic, I. and Dumas, M.E. and Stumvoll, M. and Pedersen, O.B. and Bork, P. and Ehrlich, S.D. and Zucker, J.D. and Bäckhed, F. and Raes, J. and Clément, K.
Abstract:OBJECTIVES: Gut microbiota is a key component in obesity and type 2 diabetes, yet mechanisms and metabolites central to this interaction remain unclear. We examined the human gut microbiome's functional composition in healthy metabolic state and the most severe states of obesity and type 2 diabetes within the MetaCardis cohort. We focused on the role of B vitamins and B7/B8 biotin for regulation of host metabolic state, as these vitamins influence both microbial function and host metabolism and inflammation. DESIGN: We performed metagenomic analyses in 1545 subjects from the MetaCardis cohorts and different murine experiments, including germ-free and antibiotic treated animals, faecal microbiota transfer, bariatric surgery and supplementation with biotin and prebiotics in mice. RESULTS: Severe obesity is associated with an absolute deficiency in bacterial biotin producers and transporters, whose abundances correlate with host metabolic and inflammatory phenotypes. We found suboptimal circulating biotin levels in severe obesity and altered expression of biotin-associated genes in human adipose tissue. In mice, the absence or depletion of gut microbiota by antibiotics confirmed the microbial contribution to host biotin levels. Bariatric surgery, which improves metabolism and inflammation, associates with increased bacterial biotin producers and improved host systemic biotin in humans and mice. Finally, supplementing high-fat diet-fed mice with fructo-oligosaccharides and biotin improves not only the microbiome diversity, but also the potential of bacterial production of biotin and B vitamins, while limiting weight gain and glycaemic deterioration. CONCLUSION: Strategies combining biotin and prebiotic supplementation could help prevent the deterioration of metabolic states in severe obesity.
Keywords:Diabetes Mellitus, Intestinal Bacteria, Micronutrients, Nutrition, Obesity, Animals, Mice
Source:Gut
ISSN:0017-5749
Publisher:BMJ Publishing Group
Date:11 January 2022
Official Publication:https://doi.org/10.1136/gutjnl-2021-325753
PubMed:View item in PubMed

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