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Gut Microbiota-Dependent Modulation of Energy Metabolism

Overview
Journal J Innate Immun
Publisher Karger
Date 2017 Nov 14
PMID 29131106
Citations 125
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Abstract

The gut microbiota has emerged as an environmental factor that modulates the host's energy balance. It increases the host's ability to harvest energy from the digested food, and produces metabolites and microbial products such as short-chain fatty acids, secondary bile acids, and lipopolysaccharides. These metabolites and microbial products act as signaling molecules that modulate appetite, gut motility, energy uptake and storage, and energy expenditure. Several findings suggest that the gut microbiota can affect the development of obesity. Germ-free mice are leaner than conventionally raised mice and they are protected against diet-induced obesity. Furthermore, obese humans and rodents have an altered gut microbiota composition with less phylogeneic diversity compared to lean controls, and transplantation of the gut microbiota from obese subjects to germ-free mice can transfer the obese phenotype. Taken together, these findings indicate a role for the gut microbiota in obesity and suggest that the gut microbiota could be targeted to improve metabolic diseases like obesity. This review focuses on the role of the gut microbiota in energy balance regulation and its potential role in obesity.

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