4.5 Article

Investigating relationships between post-prandial gut hormone responses and taste liking ratings prior to and following bariatric surgery: a pilot study

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INTERNATIONAL JOURNAL OF OBESITY
卷 46, 期 12, 页码 2114-2119

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SPRINGERNATURE
DOI: 10.1038/s41366-022-01214-z

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资金

  1. American Society for Metabolic and Bariatric Surgery
  2. NIH National Institute of Mental Health Neuroscience & Psychiatry T32 training program [T32MH015330]
  3. [K23DK100559]
  4. [R01DK019302]

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This study investigates the relationship between gut hormone secretion and taste preferences following bariatric surgery. The study finds significant changes in gut hormone secretion after surgery, and the liking ratings for taste mixtures are mainly related to mixtures containing both fat and sugar. These findings contribute to a better understanding of the mechanisms underlying weight loss after bariatric surgery.
Background Alterations in gut hormone secretion and reported changes in taste preferences have been suggested to contribute to the weight-reducing effects of bariatric surgery. However, a link between changes in gut hormone secretion and taste preferences following bariatric surgery has yet to be elucidated. Methods Here we examined the potential relationships between gut hormone responses (GLP-1 and PYY3-36 peak, ghrelin trough) to a test meal of Ensure and liking ratings for taste mixtures varying in sugar and fat content before and following bariatric surgery (vertical sleeve gastrectomy (VSG): N = 4; Roux-en Y gastric bypass (RYGB): N = 8). Results Significant increases in GLP-1 and PYY3-36 peak and a significant drop in ghrelin trough were observed following surgery. Pre- and postoperation, patients with higher postprandial GLP-1 or PYY3-36 peaks gave lower liking ratings for mixtures containing a combination of fat and sugar (half and half + 20% added sugar) whereas, for the combined surgery analyses, no relationships were found with solutions comprised of high fat (half and half + 0% sugar), predominantly high sugar (skim milk + 20% added sugar), or low fat and low sugar (skim milk + 0% added sugar). Within the RYGB patients, patients with the greatest increase in postprandial GLP-1 peak from preoperation to postoperation also demonstrated the greatest decrease in liking for half & half + 20% added sugar and skim milk + 20% added sugar, but not the unsweetened version of each solution. No pre- or postoperative relationship between ghrelin and liking ratings were observed. Conclusion Gut hormone responses following bariatric surgery may contribute to taste processing of sugar+fat mixtures and together influence weight loss.

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