Supplementation with inulin-type fructans affects gut microbiota and attenuates some of the cardiometabolic benefits of a plant-based diet in individuals with overweight or obesity

Autor: Mona Adnan Aldubayan, Xiaotian Mao, Martin Frederik Laursen, Kristina Pigsborg, Lars H. Christensen, Henrik M. Roager, Dennis S. Nielsen, Mads Fiil Hjorth, Faidon Magkos
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Frontiers in Nutrition, Vol 10 (2023)
Druh dokumentu: article
ISSN: 2296-861X
DOI: 10.3389/fnut.2023.1108088
Popis: BackgroundThe gut microbiota has emerged as a potential therapeutic target to improve the management of obesity and its comorbidities.ObjectiveWe investigated the impact of a high fiber (∼38 g/d) plant-based diet, consumed ad libitum, with or without added inulin-type fructans (ITF), on the gut microbiota composition and cardiometabolic outcomes in subjects with obesity. We also tested if baseline Prevotella/Bacteroides (P/B) ratio predicts weight loss outcomes.MethodsThis is a secondary exploratory analysis from the PREVENTOMICS study, in which 100 subjects (82 completers) aged 18–65 years with body mass index 27–40 kg/m2 were randomized to 10 weeks of double-blinded treatment with a personalized or a generic plant-based diet. Changes from baseline to end-of-trial in gut microbiota composition (16S rRNA gene amplicon sequencing), body composition, cardiometabolic health and inflammatory markers were evaluated in the whole cohort (n = 82), and also compared in the subgroup of subjects who were supplemented with an additional 20 g/d ITF-prebiotics (n = 21) or their controls (n = 22).ResultsIn response to the plant-based diet, all subjects lost weight (−3.2 [95% CI –3.9, −2.5] kg) and experienced significant improvements in body composition and cardiometabolic health indices. Addition of ITF to the plant-based diet reduced microbial diversity (Shannon index) and selectively increased Bifidobacterium and Faecalibacterium (q
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