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Ghrelin and Adipose Tissue Regulatory Peptides: Effect of Gastric Bypass Surgery in Obese Humans

Holdstock, Camilla, Engström, Britt Edén, Öhrvall, Margareta, Lind, Lars, Sundbom, Magnus, Karlsson, F. Anders·2003·The Journal of Clinical Endocrinology & Metabolism

Abstract

Presently surgery is the most effective way to obtain a controlled weight reduction in morbidly obese patients. Roux-en-Y gastric bypass (RYGBP) surgery is effective and used worldwide, but the exact mechanism of action is unknown. The effect of RYGBP on ghrelin, insulin, adiponectin, and leptin levels was investigated in 66 obese subjects; mean weight 127 kg (range, 96-195 kg) and mean body mass index (BMI) 45 kg/m(2) (range, 33-64) before and after surgery. Ghrelin levels were also compared in 10 nonoperated and 10 operated obese, BMI-matched women. RYGBP resulted in 22% and 30% weight loss at 6 and 12 months, respectively. Ghrelin increased by 44% and 62% and adiponectin by 36% and 98%, but insulin declined by 57% and 62% and leptin by 60% and 64%. The changes were all related to the reduction in BMI. In addition, ghrelin and insulin were inversely correlated at all time points as were changes of the peptides at 12 months (F = 4.9, P = 0.031), independent of the change in BMI. No evidence for RYGBP surgery per se having an effect on ghrelin levels, independent of weight loss, was obtained. The profound changes in the regulatory peptides are likely to reflect the new state of energy balance achieved. A close inverse association between ghrelin and insulin was observed, supporting an important role for ghrelin in glucose homeostasis.

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Metadata

Authors
Holdstock, C., Engström, B. E., Öhrvall, M., Lind, L., Sundbom, M., & Karlsson, F. A.
Venue
The Journal of Clinical Endocrinology & Metabolism
Published
2003-07-01
Volume
88
Issue
7
Pages
3177-3183
ISSN
  • 0021-972X (ISSN-L)
  • 1945-7197
OpenAlex
W2106398559
Cited by
316
References
6
FWCI
28.20
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Ghrelin and Adipose Tissue Regulatory Peptides: Effect of Gastric Bypass Surgery in Obese Humans. https://app.cochat.ai/papers/10.1210/jc.2002-021734
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Holdstock, C., Engström, B. E., Öhrvall, M., Lind, L., Sundbom, M., & Karlsson, F. A. (2003). Ghrelin and Adipose Tissue Regulatory Peptides: Effect of Gastric Bypass Surgery in Obese Humans. The Journal of Clinical Endocrinology & Metabolism. https://doi.org/10.1210/jc.2002-021734

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