Obesity Clinical Trial
Official title:
Changes in Glucose Metabolism After Roux-en-Y Gastric Bypass
Besides causing weight loss Roux-en-Y gastric bypass (RYGB) has profound effect on glucose metabolism leading to remission of type 2 diabetes early after surgery. However the mechanisms for this improvement remain uncertain. The aim of this study is to investigate the changes in insulin sensitivity and beta-cell function 1 week and 3 months following RYGB using oral and intravenous test.
Investigators plan to study 24 obese patients already enrolled for Roux-en-y gastric bypass surgery (RYGB). 8 with type 2 diabetes (DM2), 8 with impaired glucose tolerance (IGT) and 8 with normal glucose tolerance (NGT) before, within the first week and 3 month after RYGB using a liquid mixed meal test (MMT) and an insulin modified frequently sampled intravenous glucose tolerance test (IM-FSIGT). Furthermore, an oral glucose tolerance test (OGTT) will be performed before and after 3 months. Blood will be sampled in fasting and during the tests measuring plasma glucose, insulin and C-peptid (OGTT, MMT and IM-FSIGT) and GLP-1, glucagon, GIP and GLP-2 (MMT). Beta-cell function will be assessed from the MMT (insulinogenic index - IGI), OGTT (IGI) and the IM-FSIGT (Acute insulin response, AIR) in order to examine whether changes in beta-cell function after RYGB depend on an oral stimulus. Insulin sensitivity will be assessed in fasting (HOMA-IR), during the IM-FSIGT (minimal model: Si) and from MMT/OGTT (Matsuda index). Insulin clearance/hepatic extraction of insulin will be assessed in fasting and during the intravenous and oral test. ;
Observational Model: Cohort, Time Perspective: Prospective
| Status | Clinical Trial | Phase | |
|---|---|---|---|
| Recruiting |
NCT04101669 -
EndoBarrier System Pivotal Trial(Rev E v2)
|
N/A | |
| Recruiting |
NCT04243317 -
Feasibility of a Sleep Improvement Intervention for Weight Loss and Its Maintenance in Sleep Impaired Obese Adults
|
N/A | |
| Terminated |
NCT03772886 -
Reducing Cesarean Delivery Rate in Obese Patients Using the Peanut Ball
|
N/A | |
| Completed |
NCT03640442 -
Modified Ramped Position for Intubation of Obese Females.
|
N/A | |
| Completed |
NCT04506996 -
Monday-Focused Tailored Rapid Interactive Mobile Messaging for Weight Management 2
|
N/A | |
| Recruiting |
NCT06019832 -
Analysis of Stem and Non-Stem Tibial Component
|
N/A | |
| Active, not recruiting |
NCT05891834 -
Study of INV-202 in Patients With Obesity and Metabolic Syndrome
|
Phase 2 | |
| Active, not recruiting |
NCT05275959 -
Beijing (Peking)---Myopia and Obesity Comorbidity Intervention (BMOCI)
|
N/A | |
| Recruiting |
NCT04575194 -
Study of the Cardiometabolic Effects of Obesity Pharmacotherapy
|
Phase 4 | |
| Completed |
NCT04513769 -
Nutritious Eating With Soul at Rare Variety Cafe
|
N/A | |
| Withdrawn |
NCT03042897 -
Exercise and Diet Intervention in Promoting Weight Loss in Obese Patients With Stage I Endometrial Cancer
|
N/A | |
| Completed |
NCT03644524 -
Heat Therapy and Cardiometabolic Health in Obese Women
|
N/A | |
| Recruiting |
NCT05917873 -
Metabolic Effects of Four-week Lactate-ketone Ester Supplementation
|
N/A | |
| Active, not recruiting |
NCT04353258 -
Research Intervention to Support Healthy Eating and Exercise
|
N/A | |
| Completed |
NCT04507867 -
Effect of a NSS to Reduce Complications in Patients With Covid-19 and Comorbidities in Stage III
|
N/A | |
| Recruiting |
NCT03227575 -
Effects of Brisk Walking and Regular Intensity Exercise Interventions on Glycemic Control
|
N/A | |
| Completed |
NCT01870947 -
Assisted Exercise in Obese Endometrial Cancer Patients
|
N/A | |
| Recruiting |
NCT06007404 -
Understanding Metabolism and Inflammation Risks for Diabetes in Adolescents
|
||
| Recruiting |
NCT05972564 -
The Effect of SGLT2 Inhibition on Adipose Inflammation and Endothelial Function
|
Phase 1/Phase 2 | |
| Recruiting |
NCT05371496 -
Cardiac and Metabolic Effects of Semaglutide in Heart Failure With Preserved Ejection Fraction
|
Phase 2 |