Cited by 1,007Gut microbiota and healthBariatric Surgery and OutcomesGastrointestinal motility and disorders

Conserved shifts in the gut microbiota due to gastric bypass reduce host weight and adiposity

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Liou, Alice P., Paziuk, Melissa, Luevano, Jesus-Mario, Machineni, Sriram, Turnbaugh, Peter J., Kaplan, Lee M.·2013·Science Translational Medicine

Abstract

Roux-en-Y gastric bypass (RYGB) results in rapid weight loss, reduced adiposity, and improved glucose metabolism. These effects are not simply attributable to decreased caloric intake or absorption, but the mechanisms linking rearrangement of the gastrointestinal tract to these metabolic outcomes are largely unknown. Studies in humans and rats have shown that RYGB restructures the gut microbiota, prompting the hypothesis that some of the effects of RYGB are caused by altered host-microbial interactions. To test this hypothesis, we used a mouse model of RYGB that recapitulates many of the metabolic outcomes in humans. 16S ribosomal RNA gene sequencing of murine fecal samples collected after RYGB surgery, sham surgery, or sham surgery coupled to caloric restriction revealed that alterations to the gut microbiota after RYGB are conserved among humans, rats, and mice, resulting in a rapid and sustained increase in the relative abundance of Gammaproteobacteria (Escherichia) and Verrucomicrobia (Akkermansia). These changes were independent of weight change and caloric restriction, were detectable throughout the length of the gastrointestinal tract, and were most evident in the distal gut, downstream of the surgical manipulation site. Transfer of the gut microbiota from RYGB-treated mice to nonoperated, germ-free mice resulted in weight loss and decreased fat mass in the recipient animals relative to recipients of microbiota induced by sham surgery, potentially due to altered microbial production of short-chain fatty acids. These findings provide the first empirical support for the claim that changes in the gut microbiota contribute to reduced host weight and adiposity after RYGB surgery.

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Authors
Liou, A. P., Paziuk, M., Luevano, J.-M., Machineni, S., Turnbaugh, P. J., & Kaplan, L. M.
Affiliations
  • Massachusetts General Hospital (US)
  • FAS Center for Systems Biology, Harvard University, Cambridge, MA 02138, USA.
  • Harvard University (US)
Corresponding author
  • Turnbaugh, Peter J.
  • Kaplan, Lee M.
Venue
Science Translational Medicine
Published
2013-03-27
Volume
5
Issue
178
Pages
178ra41-178ra41
ISSN
  • 1946-6234 (ISSN-L)
  • 1946-6242
OpenAlex
W2157176317
Cited by
1,007
References
57
Citations by year
2026: 22 · 2025: 32 · 2024: 36 · 2023: 57 · 2022: 68 · 2021: 92 · 2020: 88 · 2019: 103 · 2018: 84 · 2017: 90 · 2016: 105 · 2015: 114 · 2014: 69 · 2013: 47
FWCI
49.98
Type
journal article
Language
en
Open access
Locations
  • Science Translational Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute of General Medical Sciences (P50GM068763)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK-088661, RC2DK088661, F32DK095561, P30DK034854, P30DK043351)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
Roux-en-Y gastric bypass, gut microbiota, bariatric surgery, weight loss, adiposity, host-microbe interactions, Akkermansia, Escherichia, Verrucomicrobia, Gammaproteobacteria, short-chain fatty acids, fecal microbiota transplantation, germ-free mice, caloric restriction
MeSH terms
Animals, Body Weight, Eating, Male, Mice, Inbred C57BL, Gastric Bypass, Gastrointestinal Tract, Adiposity, Mice, Metagenome

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