Cited by 184Bariatric Surgery and OutcomesGastrointestinal motility and disordersRegulation of Appetite and Obesity

Fast pouch emptying, delayed small intestinal transit, and exaggerated gut hormone responses after Roux-en-Y gastric bypass

Dirksen, C., Damgaard, M., Bojsen‐Møller, K. N., Jørgensen, N. B., Kielgast, U., Jacobsen, S. H., Naver, L. S., Worm, D. +4 more·2013·Neurogastroenterology & Motility

Abstract

BACKGROUND: Roux-en-Y gastric bypass (RYGB) causes extensive changes in gastrointestinal anatomy and leads to reduced appetite and large weight loss, which partly is due to an exaggerated release of anorexigenic gut hormones. METHODS: To examine whether the altered passage of foods through the gastrointestinal tract after RYGB could be responsible for the changes in gut hormone release, we studied gastrointestinal motility with a scintigraphic technique as well as the secretion of the gut hormones glucagon-like peptide (GLP)-1 and peptide YY3-36 (PYY3-36 ) in 17 patients>1 year after RYGB and in nine healthy control subjects. KEY RESULTS: At meal completion, a smaller fraction of liquid and solid radiolabeled marker was retained in the pouch of RYGB patients than in the stomach of control subjects (P = 0.002 and P < 0.001, respectively). Accordingly, pouch emptying in patients was faster than gastric emptying in control subjects (P < 0.001 and P = 0.004, respectively liquid and solid markers). For the solid marker, small intestinal transit was slower in patients than control subjects (P = 0.034). Colonic transit rate did not differ between the groups. GLP-1 and PYY3-36 secretion was increased in patients compared to control subjects and fast pouch emptying of the liquid marker was associated with high gut hormone secretion. CONCLUSIONS & INFERENCES: After RYGB, the bulk of foods pass without hindrance into the small intestine, while the small intestinal transit is prolonged. The rapid exposure of the gut epithelium contributes to the exaggerated release of GLP-1 and PYY3-36 after RYGB.

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Crossref · 10.1111/nmo.12087

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Authors
Dirksen, C., Damgaard, M., Bojsen‐Møller, K. N., Jørgensen, N. B., Kielgast, U., Jacobsen, S. H., Naver, L. S., Worm, D., Holst, J. J., Madsbad, S., Hansen, D. L., & Madsen, J. L.
Affiliations
  • University of Copenhagen (DK)
  • Department of Endocrinology Hvidovre Hospital University of Copenhagen Hvidovre Denmark
Corresponding author
Dirksen, C.
Venue
Neurogastroenterology & Motility
Publisher
Wiley
Published
2013-01-29
Volume
25
Issue
4
Pages
346
ISSN
  • 1350-1925 (ISSN-L)
  • 1365-2982
OpenAlex
W2094934406
Cited by
184
References
30
Citations by year
2026: 7 · 2025: 6 · 2024: 10 · 2023: 12 · 2022: 10 · 2021: 18 · 2020: 12 · 2019: 15 · 2018: 15 · 2017: 19 · 2016: 15 · 2015: 23 · 2014: 9 · 2013: 11
FWCI
19.05
Type
journal article
Language
en
Open access
closed
Locations
  • Neurogastroenterology & Motility (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
Keywords
Roux-en-Y gastric bypass, small intestinal transit, colonic transit, gut hormone secretion, glucagon-like peptide-1, PYY3-36, gastrointestinal motility, bariatric surgery, weight loss, appetite regulation
MeSH terms
Adult, Female, Gastric Emptying, Gastrointestinal Hormones, Gastrointestinal Motility, Humans, Intestine, Small, Male, Middle Aged, Time Factors, Gastric Bypass

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