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Fecal microbiota transplantation from high caloric-fed donors alters glucose metabolism in recipient mice, independently of adiposity or exercise status


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Zoll, J, Read, MN, Heywood, SE, Estevez, E, Marshall, JPS, Kammoun, HL, Allen, TL, Holmes, AJ, Febbraio, MA and Henstridge, DC ORCID: 0000-0003-4988-767X 2020 , 'Fecal microbiota transplantation from high caloric-fed donors alters glucose metabolism in recipient mice, independently of adiposity or exercise status' , American Journal of Physiology: Endocrinology and Metabolism, vol. 319, no. 1 , E203-E216 , doi: 10.1152/ajpendo.00037.2020.

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Studies suggest the gut microbiota contributes to the development of obesity and metabolic syndrome. Exercise alters microbiota composition and diversity and is protective of these maladies. We tested whether the protective metabolic effects of exercise are mediated through fecal components through assessment of body composition and metabolism in recipients of fecal microbiota transplantation (FMT) from exercise-trained (ET) mice fed normal or high-energy diets. Donor C57BL/6J mice were fed a chow or high-fat, high-sucrose diet (HFHS) for 4 wk to induce obesity and glucose intolerance. Mice were divided into sedentary (Sed) or ET groups (6 wk treadmill-based ET) while maintaining their diets, resulting in four donor groups: chow sedentary (NC-Sed) or ET (NC-ET) and HFHS sedentary (HFHS-Sed) or ET (HFHS-ET). Chow-fed recipient mice were gavaged with feces from the respective donor groups weekly, creating four groups (NC-Sed-R, NC-ET-R, HFHS-Sed-R, HFHS-ET-R), and body composition and metabolism were assessed. The HFHS diet led to glucose intolerance and obesity in the donors, whereas exercise training (ET) restrained adiposity and improved glucose tolerance. No donor group FMT altered recipient body composition. Despite unaltered adiposity, glucose levels were disrupted when challenged in mice receiving feces from HFHS-fed donors, irrespective of donor-ET status, with a decrease in insulin-stimulated glucose clearance into white adipose tissue and large intestine and specific changes in the recipient’s microbiota composition observed. FMT can transmit HFHS-induced disrupted glucose metabolism to recipient mice independently of any change in adiposity. However, the protective metabolic effect of ET on glucose metabolism is not mediated through fecal factors.

Item Type: Article
Authors/Creators:Zoll, J and Read, MN and Heywood, SE and Estevez, E and Marshall, JPS and Kammoun, HL and Allen, TL and Holmes, AJ and Febbraio, MA and Henstridge, DC
Keywords: exercise, FMT, microbiota, obesity, metabolism, glucose
Journal or Publication Title: American Journal of Physiology: Endocrinology and Metabolism
Publisher: Amer Physiological Soc
ISSN: 0193-1849
DOI / ID Number: 10.1152/ajpendo.00037.2020
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Copyright 2020 American Physiological Society

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