Pasteurized Akkermansia muciniphila increases whole-body energy expenditure and fecal energy excretion in diet-induced obese mice

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Depommier , C , Van Hul , M , Everard , A , Delzenne , N M , De Vos , W M & Cani , P D 2020 , ' Pasteurized Akkermansia muciniphila increases whole-body energy expenditure and fecal energy excretion in diet-induced obese mice ' , Gut Microbes , vol. 11 , no. 5 , pp. 1231-1245 . https://doi.org/10.1080/19490976.2020.1737307

Title: Pasteurized Akkermansia muciniphila increases whole-body energy expenditure and fecal energy excretion in diet-induced obese mice
Author: Depommier, Clara; Van Hul, Matthias; Everard, Amandine; Delzenne, Nathalie M.; De Vos, Willem M.; Cani, Patrice D.
Contributor: University of Helsinki, Department of Bacteriology and Immunology
Date: 2020-09
Language: eng
Number of pages: 15
Belongs to series: Gut Microbes
ISSN: 1949-0976
URI: http://hdl.handle.net/10138/317846
Abstract: Accumulating evidence points to Akkermansia muciniphila as a novel candidate to prevent or treat obesity-related metabolic disorders. We recently observed, in mice and in humans, that pasteurization of A. muciniphila increases its beneficial effects on metabolism. However, it is currently unknown if the observed beneficial effects on body weight and fat mass gain are due to specific changes in energy expenditure. Therefore, we investigated the effects of pasteurized A. muciniphila on whole-body energy metabolism during high-fat diet feeding by using metabolic chambers. We confirmed that daily oral administration of pasteurized A. muciniphila alleviated diet-induced obesity and decreased food energy efficiency. We found that this effect was associated with an increase in energy expenditure and spontaneous physical activity. Strikingly, we discovered that energy expenditure was enhanced independently from changes in markers of thermogenesis or beiging of the white adipose tissue. However, we found in brown and white adipose tissues that perilipin2, a factor associated with lipid droplet and known to be altered in obesity, was decreased in expression by pasteurized A. muciniphila. Finally, we observed that treatment with pasteurized A. muciniphila increased energy excretion in the feces. Interestingly, we demonstrated that this effect was not due to the modulation of intestinal lipid absorption or chylomicron synthesis but likely involved a reduction of carbohydrates absorption and enhanced intestinal epithelial turnover. In conclusion, this study further dissects the mechanisms by which pasteurized A. muciniphila reduces body weight and fat mass gain. These data also further support the impact of targeting the gut microbiota by using specific bacteria to control whole-body energy metabolism.
Subject: Akkermansia muciniphila
pasteurization
mice
obesity
indirect calorimetry
brown adipose tissue metabolism
white adipose tissue metabolism
perilipins
motor activity
intestinal turnover
carbohydrates absorption
GUT MICROBIOTA
LIPID-METABOLISM
ADIPOSE-TISSUE
INFLAMMATION
ADIPOCYTES
EXPRESSION
STEATOSIS
PROTECTS
11832 Microbiology and virology
3121 General medicine, internal medicine and other clinical medicine
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