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Obesity Surgery

, Volume 29, Issue 11, pp 3698–3705 | Cite as

Long-Term Modulation of Appetitive Hormones and Sweet Cravings After Adjustable Gastric Banding and Roux-en-Y Gastric Bypass

  • Alina I. Tsouristakis
  • Gerardo Febres
  • Donald J. McMahon
  • Beverly Tchang
  • Irene M. Conwell
  • Amanda J. Tsang
  • Leaque Ahmed
  • Marc Bessler
  • Judith KornerEmail author
Original Contributions

Abstract

Background

Roux-en-Y gastric bypass (RYGB) produces greater weight loss compared with a purely restrictive procedure such as laparoscopic adjustable gastric banding (LAGB).

Objective

The objective of this study was to quantify changes in hormones that regulate energy homeostasis and appetitive sensations before and after LAGB (n = 18) and RYGB (n = 38) in order to better understand the mechanisms underlying the greater weight loss after RYGB.

Methods

A standardized test meal was administered prior to surgery, at 6 months, and annually thereafter to year 2 after LAGB and year 4 after RYGB. Blood samples were obtained in the fasted state and 30, 60, 90, and 120 min post-meal.

Results

Progressive increases in fasting PYY were observed after RYGB together with increases in postprandial area under the curve (AUC) levels that were unchanged after LAGB. GLP-1 AUC increased only after RYGB. There was a weight loss-related increase in fasting ghrelin levels after LAGB that was unchanged 1 year after RYGB despite greater percentage weight loss; ghrelin subsequently increased at years 2–4 post-RYGB. HOMA-IR decreased after both procedures but correlated with weight loss only after LAGB, whereas leptin correlated with weight loss in both groups. Sweet cravings decreased after RYGB.

Conclusion

A number of weight loss-independent changes in the gut hormonal milieu likely act in concert to promote a decrease in insulin resistance and greater weight loss efficacy after RYGB. A progressive change in hormone levels over time may reflect gut enteroplasticity after RYGB. A decrease in sweet cravings specific to RYGB may further promote superior weight loss outcomes.

Keywords

Roux-en-Y gastric bypass Adjustable gastric banding Metabolic surgery Ghrelin Glp-1 PYY Insulin resistance Appetite Sweet cravings Bariatric surgery 

Notes

Funding Sources

NIH DK072011; NIH T32 DK07271; NCRR UL1 RR024156.

Compliance with Ethical Standards

Conflict of Interest

AT, GF, DJM, BT, AT, IMC, LA have nothing to declare. MB has patent 16046592 pending, and patent 20040039452 issued. JK serves on the Scientific Advisory Board of Digma Medical and receives stock options, and receives financial compensation for serving on the Scientific Advisory Board of GI Dynamics.

Ethical Statement

All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Consent Statement

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Alina I. Tsouristakis
    • 1
  • Gerardo Febres
    • 1
  • Donald J. McMahon
    • 1
  • Beverly Tchang
    • 1
  • Irene M. Conwell
    • 1
  • Amanda J. Tsang
    • 1
  • Leaque Ahmed
    • 2
  • Marc Bessler
    • 3
  • Judith Korner
    • 1
    Email author
  1. 1.Department of MedicineColumbia University College of Physicians & SurgeonsNew YorkUSA
  2. 2.Department of SurgeryWyckoff Heights HospitalBrooklynUSA
  3. 3.Department of SurgeryColumbia University College of Physicians & SurgeonsNew YorkUSA

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