Differential Effects of Bariatric Surgery (BS) and Endoscopic Bariatric Therapy (EBT) on Long and Short-Term Metabolic Outcomes

A special issue of Journal of Clinical Medicine (ISSN 2077-0383). This special issue belongs to the section "Endocrinology & Metabolism".

Deadline for manuscript submissions: 30 June 2025 | Viewed by 740

Special Issue Editor


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Guest Editor
Division of Gastroenterology and Hepatology, Department of Internal Medicine, Carver College of Medicine, The University of Iowa, Iowa City, IA 52242, USA
Interests: Roux-en-Y gastric bypass; obesity; weight loss

Special Issue Information

Dear Colleagues,

Obesity has become a global health concern, leading to an increased demand for bariatric interventions. Bariatric surgery and endoscopic bariatric therapy have emerged as effective treatments; however, the existing literature lacks a comprehensive comparison of their outcomes, particularly in terms of disparities and differential effects:

  • Deficiencies in Comparative Studies: Existing comparative studies often lack standardization in outcome measures, follow-up periods, and patient selection criteria, leading to inconclusive or conflicting results.
  • Research Gaps in Long-Term Comparative Data: There is a paucity of long-term comparative data assessing the sustained efficacy and safety profiles of bariatric surgery versus endoscopic bariatric therapy.
  • Patient-Centric Outcomes: Limited research has delved into patient-reported outcomes, quality of life measures, and psychosocial impacts, all of which are crucial in understanding the holistic effects of these interventions.

Objectives:

Addressing Methodological Inconsistencies: This Special Issue aims to critically evaluate and address the methodological inconsistencies in existing comparative studies, thereby paving the way for more conclusive findings.

Exploring Disparities in Subpopulations: We will evaluate the differential effects of bariatric interventions across diverse demographic and clinical subpopulations to unravel disparities in outcomes.

Conclusion: By shedding light on the disparities and differential effects of bariatric surgery and endoscopic bariatric therapy, this Special Issue endeavors to bridge existing knowledge gaps and provide valuable insights for clinicians, researchers, and policy makers in the field of obesity management.

We invite the submission of original research articles, systematic reviews, meta-analyses, and theoretical papers that contribute to deepening our collective understanding of the differences in outcomes between bariatric surgery and endoscopic bariatric therapy. Submissions addressing methodological refinements, long-term comparative data, patient-reported outcomes, and disparities in subpopulations are particularly encouraged.

Dr. Mohamad Mokadem
Guest Editor

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Keywords

  • obesity
  • bariatric surgery
  • endoscopic bariatric therapy
  • metabolic surgery
  • weight loss
  • metabolism
  • weight management

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Published Papers (1 paper)

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Research

15 pages, 2798 KiB  
Article
A Western-Style Diet Influences Ingestive Behavior and Glycemic Control in a Rat Model of Roux-en-Y Gastric Bypass Surgery
by C. Warner Hoornenborg, Edit Somogyi, Jan E. Bruggink, Christina N. Boyle, Thomas A. Lutz, Marloes Emous, André P. van Beek and Gertjan van Dijk
J. Clin. Med. 2025, 14(8), 2642; https://doi.org/10.3390/jcm14082642 - 11 Apr 2025
Viewed by 279
Abstract
Background: Roux-en-Y gastric bypass (RYGB) surgery results in weight reduction and decreased energy intake and can ameliorate type 2 diabetes. These beneficial effects are usually attributed to changes in hunger and satiety and relatively rapid improvements in glycemic control, but these effects [...] Read more.
Background: Roux-en-Y gastric bypass (RYGB) surgery results in weight reduction and decreased energy intake and can ameliorate type 2 diabetes. These beneficial effects are usually attributed to changes in hunger and satiety and relatively rapid improvements in glycemic control, but these effects may depend on dietary adherence. The aim of this study is to investigate the relatively early effects of RYGB surgery on weight reduction (by focusing on eating patterns) and glycemic control in rats subjected to a healthy maintenance diet or an unhealthy Western-style diet. Methods: Rats were fed a high-fat diet with added sucrose (HF/S) or a low-fat (LF) diet. Body weight, high-resolution tracking of meal-related parameters, and glucose regulation after overnight fasting and during a mixed meal tolerance test (MMTT; 2 mL sweet/condensed milk) were measured before and after RYGB (RYGB+) or sham surgery (RYGB−). Results: HF/S feeding led to an increased body weight just before RYGB surgery, but it also caused enhanced weight loss following RYGB, which led to similar body weights in the HF/S and LF diet groups twenty-four days post-operatively. RYGB surgery and diet dependently and independently influenced meal-related parameter outcomes, where both RYGB+ and HF/S feeding resulted in shorter meal duration (p < 0.01), higher ingestion rates (p < 0.001), and increased satiety ratio (p < 0.05), especially in the HF/S diet group subjected to RYGB. While RYGB surgery generally improved baseline glycemic parameters including HOMA-IR (p < 0.01), it often interacted with diet to affect MMTT-induced hyperglycemia (p < 0.05), beta-cell sensitivity (p < 0.01), and the insulinogenic index (p < 0.01), with the LF rats overall maintaining better glycemic control than the HF/S-fed rats. Conclusions: This study shows the importance of controlling diet after RYGB surgery, as diet type significantly influences ingestive behavior, post-prandial glucose regulation, beta-cell sensitivity, and glucose tolerance after RYGB. Full article
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