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Study identifier: NCT01803451 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Glucagon-like Peptide 1, Glucose Metabolism and Gastric Bypass

Condition: Post-bariatric Surgery  ·  Sponsor: The University of Texas Health Science Center at San Antonio

PhaseEARLY_Phase 1
Planned participants80
Who can joinAll sexes, 18 Years to 65 Years
Healthy volunteersYes

About this study

The overall goal of this project is to understand the mechanisms by which gastric bypass surgery improves glucose metabolism. The central hypothesis guiding this project is that the reconfiguration of intestinal transit with the Roux-en-Y will increase the release of insulinotropic GI hormones, termed incretins that improve insulin secretion and glucose metabolism. The study is divided into three specific aims. 1. To determine the role of incretin hormones on insulin secretion in patients with gastric bypass surgery using intravenous-oral hyperglycemic clamp. 2. To compare incretin effect and glucose tolerance among patient who suffer from hypoglycemia after RYGB and asymptomatic surgical and non-surgical individuals. 3. To quantify the contribution of GLP-1 to incretin effect enhancement following surgery.

This description comes directly from the study's public registry record.

Talk to the study team

Marzieh Salehi, MD MS  ·  210-567-6691  ·  salehi@uthscsa.edu

Jennifer Foster, MSN  ·  210-450-8696  ·  fosterj6@uthscsa.edu

Always discuss trial participation with your own doctor first.

Locations (2)

Texas Diabetes Institute - University Health SystemSan Antonio, Texas, United StatesRecruiting
South Texas Veterans Health Care SystemSan Antonio, Texas, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT01803451