Contribution of the gut microbiota to the regulation of host metabolism and energy balance: a focus on the gut–liver axis

• Published in: Proceedings of the Nutrition Society Vol. 78; no. 3; pp. 319 - 328
• Main Authors: Delzenne, N. M., Knudsen, C., Beaumont, M., Rodriguez, J., Neyrinck, A. M., Bindels, L. B.
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 01.08.2019; Cambridge University Press (CUP)
• Subjects: absorption barrier; Animal models; Animals; behavior disorders; Composition; Conference on ‘Getting energy balance right’; Diabetes; Diet; Disease Models, Animal; Energy balance; Energy Metabolism; enzymes; Fatty liver; Gastrointestinal Microbiome; Gene expression; Human subjects; Humans; Inflammation; Inflammation - metabolism; Inflammation - physiopathology; Insulin resistance; Intestinal microflora; intestinal microorganisms; Life Sciences; Liver; Liver - metabolism; Liver - physiology; Liver diseases; Medical innovations; Metabolic syndrome; Metabolites; Mice; Microbiota; Microorganisms; Non-alcoholic Fatty Liver Disease - metabolism; Non-alcoholic Fatty Liver Disease - physiopathology; Nutrients; Nutrition Society Summer Meeting 2018; nutritional intervention; Obesity; Other; patients; Permeability; Prebiotics; Probiotics; Studies; Symposium 2: Molecular mechanisms contributing to energy balance; Gut microbiota; Inflammation; Non-alcoholic fatty liver disease; Prebiotics; NASH non-alcoholic steatohepatitis; ITF inulin-type fructans; AhR aryl hydrocarbon receptor; AST aspartate aminotransferase; GLP glucagon-like peptide; FXR farnesoid X receptor; NAFLD non-alcoholic fatty liver disease; GPR G protein-coupled receptors; BA bile acid; ALT alanine aminotransferase; LPS lipopolysaccharides; prebiotic; non-alcoholic fatty liver desease; inflammation; gut microbiota
• ISSN: 0029-6651; 1475-2719; 1475-2719
• DOI: 10.1017/S0029665118002756

This review presents mechanistic studies performed in vitro and in animal models, as well as data obtained in patients that contribute to a better understanding of the impact of nutrients interacting with the gut microbiota on metabolic and behavioural alterations linked to obesity. The gut microbiota composition and function are altered in several pathological conditions including obesity and related diseases i.e. non-alcoholic fatty liver diseases (NAFLD). The gut–liver axis is clearly influenced by alterations of the gut barrier that drives inflammation. In addition, recent papers propose that specific metabolites issued from the metabolic cooperation between the gut microbes and host enzymes, modulate inflammation and gene expression in the liver. This review illustrates how dietary intervention with prebiotics or probiotics influences host energy metabolism and inflammation. Indeed, intervention studies are currently underway in obese and NAFLD patients to unravel the relevance of the changes in gut microbiota composition in the management of metabolic and behavioural disorders by nutrients interacting with the gut microbiota. In conclusion, diet is among the main triggers of NAFLD and the gut microbiota is modified accordingly, underlining the importance of the concomitant study of the nutrients and microbial impact on liver health and metabolism, in order to propose innovative, clinically relevant, therapeutic approaches.