Cited by 532Bariatric Surgery and OutcomesDiabetes Treatment and ManagementPancreatic function and diabetes

Incretin levels and effect are markedly enhanced 1 month after Roux-en-Y gastric bypass surgery in obese patients with type 2 diabetes

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Laferrère, Blandine, Heshka, Stanley, Wang, Krystle, Khan, Yasmin, McGinty, James, Teixeira, Julio, Hart, Allison B., Olivan, Blanca·2007·Diabetes Care

Abstract

OBJECTIVE: Limited data on patients undergoing Roux-en-Y gastric bypass surgery (RY-GBP) suggest that an improvement in insulin secretion after surgery occurs rapidly and thus may not be wholly accounted for by weight loss. We hypothesized that in obese patients with type 2 diabetes the impaired levels and effect of incretins changed as a consequence of RY-GBP. RESEARCH DESIGN AND METHODS: Incretin (gastric inhibitory peptide [GIP] and glucagon-like peptide-1 [GLP-1]) levels and their effect on insulin secretion were measured before and 1 month after RY-GBP in eight obese women with type 2 diabetes and in seven obese nondiabetic control subjects. The incretin effect was measured as the difference in insulin secretion (area under the curve [AUC]) in response to an oral glucose tolerance test (OGTT) and to an isoglycemic intravenous glucose test. RESULTS: Fasting and stimulated levels of GLP-1 and GIP were not different between control subjects and patients with type 2 diabetes before the surgery. One month after RY-GBP, body weight decreased by 9.2 +/- 7.0 kg, oral glucose-stimulated GLP-1 (AUC) and GIP peak levels increased significantly by 24.3 +/- 7.9 pmol x l(-1) x min(-1) (P < 0.0001) and 131 +/- 85 pg/ml (P = 0.007), respectively. The blunted incretin effect markedly increased from 7.6 +/- 28.7 to 42.5 +/- 11.3 (P = 0.005) after RY-GBP, at which it time was not different from that for the control subjects (53.6 +/- 23.5%, P = 0.284). CONCLUSIONS: These data suggest that early after RY-GBP, greater GLP-1 and GIP release could be a potential mediator of improved insulin secretion.

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Authors
Laferrère, B., Heshka, S., Wang, K., Khan, Y., McGinty, J., Teixeira, J., Hart, A. B., & Olivan, B.
Affiliations
  • Obesity Research Center, St. Luke's/Roosevelt Hospital Center, Columbia University College of Physicians and Surgeons, New York, New York
  • St. Luke's-Roosevelt Hospital Center (US)
Venue
Diabetes Care
Published
2007-07-01
Volume
30
Issue
7
Pages
1709-1716
ISSN
  • 0149-5992 (ISSN-L)
  • 1935-5548
OpenAlex
W2166561625
Cited by
532
References
61
Citations by year
2026: 11 · 2025: 9 · 2024: 10 · 2023: 16 · 2022: 19 · 2021: 29 · 2020: 22 · 2019: 27 · 2018: 20 · 2017: 27 · 2016: 29 · 2015: 35 · 2014: 47 · 2013: 35 · 2012: 43
FWCI
32.22
Type
journal article
Language
en
Open access
Locations
  • Diabetes Care (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • American Diabetes Association
  • National Institutes of Health (RR-00645)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK63068-05, DK 26687, R01DK067561, P30DK026687, P30DK063608)
  • National Center for Research Resources (RR 00645, M01RR000645)
Topics
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes Treatment and Management
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
Keywords
Roux-en-Y gastric bypass, bariatric surgery, type 2 diabetes, obesity, incretins, glucagon-like peptide-1, glucose-dependent insulinotropic polypeptide, insulin secretion, incretin effect, weight loss, oral glucose tolerance test
MeSH terms
Adult, Diabetes Mellitus, Type 2, Female, Gastric Inhibitory Polypeptide, Humans, Insulin, Middle Aged, Obesity, Laparoscopy, Postoperative Period, Gastric Bypass, Glucagon-Like Peptide 1

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