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Modulation of Gut Microbiota of Overweight Mice by Agavins and Their Association with Body Weight Loss

Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del IPN, Unidad Irapuato 36821, México
Faculty of Food Science and Biotechnology, College of Life Science, Sejong University, Seoul 05006, Korea
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Nutrients 2017, 9(9), 821;
Received: 20 June 2017 / Revised: 21 July 2017 / Accepted: 25 July 2017 / Published: 23 August 2017
(This article belongs to the Special Issue Prebiotics and Probiotics)
PDF [2504 KB, uploaded 23 August 2017]


Agavins consumption has led to accelerated body weight loss in mice. We investigated the changes on cecal microbiota and short-chain fatty acids (SCFA) associated with body weight loss in overweight mice. Firstly, mice were fed with standard (ST5) or high-fat (HF5) diet for five weeks. Secondly, overweight mice were shifted to standard diet alone (HF-ST10) or supplemented with agavins (HF-ST + A10) or oligofructose (HF-ST + O10), for five more weeks. Cecal contents were collected before and after supplementation to determine microbiota and SCFA concentrations. At the end of first phase, HF5 mice showed a significant increase of body weight, which was associated with reduction of cecal microbiota diversity (PD whole tree; non-parametric t test, p < 0.05), increased Firmicutes/Bacteroidetes ratio and reduced SCFA concentrations (t test, p < 0.05). After diet shifting, HF-ST10 normalized its microbiota, increased its diversity, and SCFA levels, whereas agavins (HF-ST + A10) or oligofructose (HF-ST + O10) led to partial microbiota restoration, with normalization of the Firmicutes/Bacteroides ratio, as well as higher SCFA levels (p < 0.1). Moreover, agavins noticeably enriched Klebsiella and Citrobacter (LDA > 3.0); this enrichment has not been reported previously under a prebiotic treatment. In conclusion, agavins or oligofructose modulated cecal microbiota composition, reduced the extent of diversity, and increased SCFA. Furthermore, identification of bacteria enriched by agavins opens opportunities to explore new probiotics. View Full-Text
Keywords: agavins; prebiotics; microbiota; overweight; body weight loss; short chain fatty acids agavins; prebiotics; microbiota; overweight; body weight loss; short chain fatty acids

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Huazano-García, A.; Shin, H.; López, M.G. Modulation of Gut Microbiota of Overweight Mice by Agavins and Their Association with Body Weight Loss. Nutrients 2017, 9, 821.

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