Changes in postprandial gut hormones after metabolic surgery: A comparison of gastric bypass and sleeve gastrectomy

Wei Jei Lee, Chih Yen Chen*, Keong Chong, Yi Chih Lee, Shu Chun Chen, Shou Dong Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

147 Scopus citations

Abstract

Background: Laparoscopic gastric bypass (GB) is reportedly more effective than laparoscopic sleeve gastrectomy (SG) in the treatment of patients with a low body mass index and type 2 diabetes mellitus. However, the mechanism remains speculative. We compared the postprandial gut hormone patterns between patients undergoing laparoscopic GB and laparoscopic SG at 2 years after surgery in a hospital-based, prospective study. Methods: A total of 16 laparoscopic GB and 16 laparoscopic SG patients were followed up and appraised for glucose homeostasis. Two years after surgery, the mixed meal test and gut hormones were evaluated in 13 laparoscopic GB and 13 laparoscopic SG patients who had been included in the previous randomized trial. Results: The preoperative characteristics, such as body mass index, body weight, waist circumference, and duration of T2DM were comparable between the 2 groups. T2DM remission was achieved in 13 (81%) laparoscopic GB and 3 (19%) laparoscopic SG patients (P <.05) 2 years after surgery. The laparoscopic GB patients had lost more weight and had a smaller waist circumference and lower levels of glucose and hemoglobin A1c, and lower insulin resistance than the SG patients. Significant differences were found in acyl ghrelin, des-acyl ghrelin, cholecystokinin, and resistin between the 2 groups, but none in obestatin, gastric inhibitory peptide, glucagon-like peptide-1, and leptin. Conclusions: Both laparoscopic GB and laparoscopic SG have strong hindgut effects after surgery, but GB has a significant duodenal exclusion effect on cholecystokinin. The laparoscopic SG group had lower acyl ghrelin and des-acyl ghrelin levels but greater concentrations of resistin than the laparoscopic GB group.

Original languageEnglish
Pages (from-to)683-690
Number of pages8
JournalSurgery for Obesity and Related Diseases
Volume7
Issue number6
DOIs
StatePublished - Nov 2011

Keywords

  • Diabetes mellitus
  • Glucose homeostasis
  • Gut hormone
  • Insulin
  • Laparoscopic gastric bypass
  • Laparoscopic sleeve gastrectomy

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