Abstract
Aims: To investigate whether the elevation in postprandial concentrations of the gut hormones glucagon‐like peptide‐1 (GLP‐1), oxyntomodulin (OXM) and peptide YY (PYY) accounts for the beneficial changes in food preferences, sweet taste function and eating behaviour after Roux‐en‐Y gastric bypass (RYGB). Materials and methods: This was a secondary analysis of a randomized single‐blind study in which we infused GLP‐1, OXM, PYY (GOP) or 0.9% saline subcutaneously for 4 weeks in 24 subjects with obesity and prediabetes/diabetes, to replicate their peak postprandial concentrations, as measured at 1 month in a matched RYGB cohort (ClinicalTrials.gov NCT01945840). A 4‐day food diary and validated eating behaviour questionnaires were completed. Sweet taste detection was measured using the method of constant stimuli. Correct sucrose identification (corrected hit rates) was recorded, and sweet taste detection thresholds (EC50s: half maximum effective concencration values) were derived from concentration curves. The intensity and consummatory reward value of sweet taste were assessed using the generalized Labelled Magnitude Scale. Results: Mean daily energy intake was reduced by 27% with GOP but no significant changes in food preferences were observed, whereas a reduction in fat and increase in protein intake were seen post‐RYGB. There was no change in corrected hit rates or detection thresholds for sucrose detection following GOP infusion. Additionally, GOP did not alter the intensity or consummatory reward value of sweet taste. A significant reduction in restraint eating, comparable to the RYGB group was observed with GOP. Conclusion: The elevation in plasma GOP concentrations after RYGB is unlikely to mediate changes in food preferences and sweet taste function after surgery but may promote restraint eating.
Original language | English |
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Pages (from-to) | 1731-1739 |
Number of pages | 9 |
Journal | Diabetes, Obesity and Metabolism |
Volume | 25 |
Issue number | 6 |
Early online date | 22 Feb 2023 |
DOIs | |
Publication status | Published (in print/issue) - 1 Jun 2023 |
Bibliographical note
Funding Information:The authors are grateful to the staff at the Imperial Weight Centre and the Imperial National Institutes of Health Research (NIHR) Clinical Research Facility for their support of this study. The research study was funded by the UK Medical Research Council (MRC) Experimental Medicine Challenge Grant (MR/K02115X/1). The Section of Investigative Medicine is funded by grants from the MRC and Biotechnology and Biological Sciences Research Council and is supported by the NIHR Imperial Biomedical Research Centre Funding Scheme. The research study was also supported by the Imperial NIHR Clinical Research Facility at Imperial College Healthcare NHS Trust. Stephen R. Bloom and Tricia M. Tan are funded by the MRC and by the NIHR. Alexander Miras has been funded with grants from the NIHR, MRC, the JON Moulton Charity Trust, Fractyl and Randox.
Funding Information:
U.K. Medical Research Council (MRC) Experimental Medicine Challenge Grant, Grant/Award Number: MR/K02115X/1 Funding information
Funding Information:
The authors are grateful to the staff at the Imperial Weight Centre and the Imperial National Institutes of Health Research (NIHR) Clinical Research Facility for their support of this study. The research study was funded by the UK Medical Research Council (MRC) Experimental Medicine Challenge Grant (MR/K02115X/1). The Section of Investigative Medicine is funded by grants from the MRC and Biotechnology and Biological Sciences Research Council and is supported by the NIHR Imperial Biomedical Research Centre Funding Scheme. The research study was also supported by the Imperial NIHR Clinical Research Facility at Imperial College Healthcare NHS Trust. Stephen R. Bloom and Tricia M. Tan are funded by the MRC and by the NIHR. Alexander Miras has been funded with grants from the NIHR, MRC, the JON Moulton Charity Trust, Fractyl and Randox. The views expressed are those of the authors and not necessarily those of the funders the UK NHS, the NIHR or the UK Department of Health.
Publisher Copyright:
© 2023 The Authors. Diabetes, Obesity and Metabolism published by John Wiley & Sons Ltd.
Keywords
- Endocrinology
- Internal Medicine
- Diabetes and Metabolism
- GLP-1
- bariatric surgery
- weight control
- randomized trial
- antiobesity drug
- obesity therapy
- ORIGINAL ARTICLES
- GLP‐1
- ORIGINAL ARTICLE
- Single-Blind Method
- Food Preferences
- Gastric Bypass/adverse effects
- Sucrose
- Gastrointestinal Hormones
- Glucagon-Like Peptide 1/metabolism
- Humans
- Peptide YY/metabolism
- Prediabetic State/complications
- Obesity/complications
- Taste
- Volunteers