Article (Scientific journals)
Link between gut microbiota and health outcomes in inulin -treated obese patients: Lessons from the Food4Gut multicenter randomized placebo-controlled trial.
Hiel, Sophie; Gianfrancesco, Marco; Rodriguez, Julie et al.
2020In Clinical nutrition (Edinburgh, Scotland)
Peer reviewed
 

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Keywords :
Inulin; Metformin; Microbiota; Obesity; Prebiotics
Abstract :
[en] BACKGROUND: The gut microbiota is altered in obesity and is strongly influenced by nutrients and xenobiotics. We have tested the impact of native inulin as prebiotic present in vegetables and added as a supplement on gut microbiota-related outcomes in obese patients. Metformin treatment was analyzed as a potential modulator of the response. METHODS: A randomized, single-blinded, multicentric, placebo-controlled trial was conducted in 150 obese patients who received 16 g/d native inulin versus maltodextrin, coupled to dietary advice to consume inulin-rich versus -poor vegetables for 3 months, respectively, in addition to dietary caloric restriction. Anthropometry, diagnostic imaging (abdominal CT-scan, fibroscan), food-behavior questionnaires, serum biology and fecal microbiome (primary outcome; 16S rDNA sequencing) were analyzed before and after the intervention. RESULTS: Both placebo and prebiotic interventions lowered energy intake, BMI, systolic blood pressure, and serum γ-GT. The prebiotic induced greater weight loss and additionally decreased diastolic blood pressure, AST and insulinemia. Metformin treatment compromised most of the gut microbiota changes and metabolic improvements linked to prebiotic intervention. The prebiotic modulated specific bacteria, associated with the improvement of anthropometry (i.e. a decrease in Desulfovibrio and Clostridium sensu stricto). A large increase in Bifidobacterium appears as a signature of inulin intake rather than a driver of prebiotic-linked biological outcomes. CONCLUSIONS: Inulin-enriched diet is able to promote weight loss in obese patients, the treatment efficiency being related to gut microbiota characteristics. This treatment is more efficacious in patients who did not receive metformin as anti-diabetic drugs prior the intervention, supporting that both drug treatment and microbiota might be taken into account in personalized nutrition interventions. Registered under ClinicalTrials.gov Identifier no NCT03852069.
Disciplines :
Human health sciences: Multidisciplinary, general & others
Author, co-author :
Hiel, Sophie 
Gianfrancesco, Marco  ;  Université de Liège - ULiège > GIGA > Laboratoire d'Immunométabolisme et Nutrition
Rodriguez, Julie 
Portheault, Daphnée
Leyrolle, Quentin
Bindels, Laure B.
Gomes da Silveira Cauduro, Carolina
Mulders, Maria D. G. H.
Zamariola, Giorgia
Azzi, Anne-Sophie
Kalala, Gaetan
Pachikian, Barbara D.
Amadieu, Camille
Neyrinck, Audrey M.
Loumaye, Audrey
Cani, Patrice D.
Lanthier, Nicolas
Trefois, Pierre
Klein, Olivier
Luminet, Olivier
Bindelle, Jérôme  ;  Université de Liège - ULiège > Département GxABT > Ingénierie des productions animales et nutrition
Paquot, Nicolas ;  Université de Liège - ULiège > Département des sciences de la santé publique > Diabétologie, nutrition et maladies métaboliques
Cnop, Miriam
Thissen, Jean-Paul
Delzenne, Nathalie M.
More authors (15 more) Less
 These authors have contributed equally to this work.
Language :
English
Title :
Link between gut microbiota and health outcomes in inulin -treated obese patients: Lessons from the Food4Gut multicenter randomized placebo-controlled trial.
Publication date :
2020
Journal title :
Clinical nutrition (Edinburgh, Scotland)
ISSN :
0261-5614
eISSN :
1532-1983
Peer reviewed :
Peer reviewed
Commentary :
Copyright © 2020 The Authors. Published by Elsevier Ltd.. All rights reserved.
Available on ORBi :
since 11 August 2020

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