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Research Article Free access | 10.1172/JCI990

Glucagon-like peptide 1 promotes satiety and suppresses energy intake in humans.

A Flint, A Raben, A Astrup, and J J Holst

Research Department of Human Nutrition, Center for Food Research, The Royal Veterinary and Agricultural University, DK-1958 Frederiksberg C, Denmark. afl@kvl.dk

Find articles by Flint, A. in: JCI | PubMed | Google Scholar

Research Department of Human Nutrition, Center for Food Research, The Royal Veterinary and Agricultural University, DK-1958 Frederiksberg C, Denmark. afl@kvl.dk

Find articles by Raben, A. in: JCI | PubMed | Google Scholar

Research Department of Human Nutrition, Center for Food Research, The Royal Veterinary and Agricultural University, DK-1958 Frederiksberg C, Denmark. afl@kvl.dk

Find articles by Astrup, A. in: JCI | PubMed | Google Scholar

Research Department of Human Nutrition, Center for Food Research, The Royal Veterinary and Agricultural University, DK-1958 Frederiksberg C, Denmark. afl@kvl.dk

Find articles by Holst, J. in: JCI | PubMed | Google Scholar

Published February 1, 1998 - More info

Published in Volume 101, Issue 3 on February 1, 1998
J Clin Invest. 1998;101(3):515–520. https://doi.org/10.1172/JCI990.
© 1998 The American Society for Clinical Investigation
Published February 1, 1998 - Version history
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Abstract

We examined the effect of intravenously infused glucagon-like peptide 1 (GLP-1) on subjective appetite sensations after an energy-fixed breakfast, and on spontaneous energy intake at an ad libitum lunch. 20 young, healthy, normal-weight men participated in a placebo-controlled, randomized, blinded, crossover study. Infusion (GLP-1, 50 pmol/ kg.h or saline) was started simultaneously with initiation of the test meals. Visual analogue scales were used to assess appetite sensations throughout the experiment and the palatability of the test meals. Blood was sampled throughout the day for analysis of plasma hormone and substrate levels. After the energy-fixed breakfast, GLP-1 infusion enhanced satiety and fullness compared with placebo (treatment effect: P < 0.03). Furthermore, spontaneous energy intake at the ad libitum lunch was reduced by 12% by GLP-1 infusion compared with saline (P = 0.002). Plasma GLP-1, insulin, glucagon, and blood glucose profiles were affected significantly by the treatment (P < 0.002). In conclusion, the results show that GLP-1 enhanced satiety and reduced energy intake and thus may play a physiological regulatory role in controlling appetite and energy intake in humans.

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