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Suppression of Obesity by an Intestinal Helminth Through Interactions with Intestinal Microbiota

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Journal Infect Immun
Date 2019 Apr 10
PMID 30962398
Citations 15
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Abstract

Obesity is increasingly causing lifestyle diseases in developed countries where helminthic infections are rarely seen. Here, we investigated whether an intestinal nematode, , has a suppressive role in diet-induced obesity in mice. Infection with suppressed weight gain in obese mice, which was associated with increased uncoupling protein 1 (UCP1) expression in adipocytes and a higher serum norepinephrine (NE) concentration. Blocking interactions of NE with its receptor on adipocytes resulted in the failure to prevent weight gain and to enhance UCP1 expression in obese mice infected with , indicating that NE is responsible for the protective effects of on obesity. In addition to sympathetic nerve-derived NE, the intestinal microbiota was involved in the increase in NE. Infection with altered the composition of intestinal bacteria, and antibiotic treatment to reduce intestinal bacteria reversed the higher NE concentration, UCP1 expression, and prevention of the weight gain observed after infection. Our data indicate that exerts suppressive roles on obesity through modulation of microbiota that produce NE.

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