Clinical trials: Bypass Bariatric Surgery
Bariatric Surgery, Hypoglycemia
Assessing Insulin Turnover Using an In-vivo Deuterated Water Experiment.
The primary objective of this study is to observe the kinetics of pre-stored and de-novo synthesized insulin that is secreted into the circulation using an in-vivo heavy water (D2O) labelling experiment in patients with…
- Conditions
- Bariatric Surgery, Hypoglycemia, Gastric Bypass
- Trial name
- DEEP1A (NCT04332289)
- Testing
- Heavy water experiment
- Where
- Switzerland
- Volunteers
- 4 people, healthy volunteers welcome
- Sponsor
- Lia Bally
Muscle Function, Handgrip Strength Test
Muscle Assessment in Women Who Have Undergone Roux-en-Y Gastric Bypass Surgery
The purpose of this study is to assess muscle function in women at least two years after being submitted to Roux-en-Y Gastric Bypass Surgery and compare with a control group
- Trial name
- FUBA (NCT02811393)
- Testing
- Assess muscle function
- Where
- Chile
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- University of Chile
Bariatric Surgery (Gastric Bypass), Overweight
The Effect of Different Macronutrients on Gastrointestinal Hormone Secretion After Gastric Bypass Operation
The purpose of this study is to determine the type of macronutrient (carbohydrate, lipid or protein) that most potently stimulates the endogen secretion of different gut hormones (primary outcome = Glucagon-Like peptide-1) in…
- Trial name
- NCT02372526
- Testing
- Mealtest: High protein 200 kcal 200 ml liquid meal consumed during 10 minutes, Mealtest: High fat 200 kcal 200 ml liquid meal consumed during 10 minutes, Mealtest: High carbohydrate 200 kcal 200 ml liquid meal consumed during 10 minutes
- Where
- Denmark
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Kirstine Nyvold Bojsen-Moeller
Obesity
Effect of Gastric Bypass Surgery on Pancreatic Islet and Incretin Function - Follow-up Study
To examine pancreatic islet function and incretin function during intravenous and oral stimulation >2 years after gastric bypass surgery in patients with normal glucose tolerance.
- Trial name
- NCT02161666
- Where
- Denmark
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Obesity, Fatty Liver
Impact of Bariatric Surgery on the Evolution of Nonalcoholic Fatty Liver Disease: a Comparative Clinical Trial Between Sleeve Gastrectomy and Gastric Bypass
Aim: To compare prospectively two bariatric surgery techniques: sleeve gastrectomy (SG) vs gastric bypass (GB) in the evolution of nonalcoholic fatty liver disease (NAFLD) measured by the transient elastography in the first year.
- Trial name
- NCT02394353
- Testing
- Transient hepatic elastography
- Where
- Brazil
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ministry of Health, Brazil
Obesity
Effect of Acute Exercise on Food Intake and Energy Expenditure Following a Gastric Bypass
This pilot study will use a crossover design to explore the effects of acute exercise following bariatric surgery on food intake, energy expenditure, appetite, food reward, appetite hormones, and inflammatory response.
- Trial name
- ExoABari (NCT04348617)
- Testing
- Moderate exercise, Rest
- Where
- Canada
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Universite du Quebec en Outaouais
Obesity
Cerebrospinal Fluid Biomarkers in Bariatric Surgery
The goal of this project is to understand why bariatric surgery is such an effective treatment for obesity with a focus on brain mechanisms.
- Trial name
- NCT04350892
- Testing
- Roux-en-Y Gastric Bypass (RYGB), Sleeve Gastrectomy (SG), Very Low Calorie Diet (VLCD)
- Where
- United States
- Volunteers
- 51 people, healthy volunteers welcome
- Sponsor
- Columbia University
Bariatric Surgery
Incretin Hormone Antagonism After Bariatric Surgery
Using the glucagon-like peptide-1 (GLP-1) antagonist exendin(9-39) and the glucose-dependent insulinotropic peptide (GIP) antagonist GIP(3-30), the purpose of this study is to clarify the importance of endogenous GLP-1 and GIP…
- Trial name
- INCA-BAR (NCT03950245)
- Testing
- GLP-1 antagonism, GIP antagonism, GLP-1 and GIP antagonism
- Where
- 2 sites in Denmark
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Obesity, Morbid, Metabolic Syndrome
Biometabolic Outcomes After Weight Loss Surgery: An Individualized Approach
Variable outcomes after weight loss surgery are likely attributable to complex, poorly understood mechanisms. Due to the significant impact that morbid obesity has on a patient's health, successful management of obesity and its…
- Conditions
- Obesity, Morbid, Metabolic Syndrome, NASH - Nonalcoholic Steatohepatitis
- Trial name
- NCT04841057
- Testing
- 50 cm BP limb length, 100 cm BP limb length, 150 cm BP limb length
- Where
- United States
- Volunteers
- 750 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Glucose Metabolism Disorders, Obesity
Effect of Meal Texture on Glucose-metabolism and Gut Hormone Response After Bariatric Surgery
The investigators want to evaluate the difference in glucose metabolism and intestinal hormonal response after a liquid meal versus a solid meal in patients after bariatric surgery.
- Conditions
- Glucose Metabolism Disorders, Obesity, Sleeve Gastrectomy, Gastric Bypass
- Trial name
- Obesity (NCT04082923)
- Testing
- Liquid meal, Solid meal
- Where
- Denmark
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Bariatric Surgery, Alcohol Consumption
Effect of Moderate Alcohol Consumption to Cognitive Functioning After Roux-en Y Gastric Bypass
Objectives: Alcohol metabolism is changed in gastric bypass patients, leading to faster resorption and higher alcohol peak concentrations in blood.
- Conditions
- Bariatric Surgery, Alcohol Consumption, Cognitive Function
- Trial name
- NCT02380950
- Testing
- 250 ml alcohol consumption
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- eSwiss Medical & Surgical Center
Hypoglycemia Non-Diabetic, Gastric Bypass Status Complicating Pregnancy, Birth, or Puerperium
Bariatric Surgery and Consequences for Mother and Baby in Pregnancy
Background Roux-en-Y gastric bypass (RYGB) is a well-established treatment of obesity, most often performed in women during their reproductive years. Adverse events related to RYGB include hypoglycemia.
- Trial name
- BAMBI (NCT03713060)
- Testing
- Mixed meal test
- Where
- 2 sites in Denmark
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- University of Southern Denmark
Roux en Y Gastric Bypass, Sleeve Gastrectomy
Venlafaxine PK Following Bariatric Surgery
This study is being conducted to evaluate how the body absorbs and processes the immediate release (IR) and sustained release (XR) medication venlafaxine (Effexor®).
- Trial name
- VLX (NCT02005107)
- Testing
- Venlafaxine IR and Venlafaxine XR
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- North Dakota State University
Obesity, Bariatric Surgery Candidate
Evaluation of Hormonal Contraceptive Treatments in Obese Women
The aim of our study is to assess the concentrations of different oral contraceptive agents in morbid obese women before and after two types of bariatric surgeries (RYGB and sleeve gastrectomy) in order to study the role of the…
- Conditions
- Obesity, Bariatric Surgery Candidate, Oral Contraceptive
- Trial name
- OBECO (NCT02398903)
- Testing
- Blood samples for measurement of drug Css, DXA and impedancemetry
- Where
- 2 sites in France
- Volunteers
- 174 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
Obesity, Morbid
Effect of Biliopancreatic Diversion on Glucose Homeostasis
Biliopancreatic diversion (BPD) surgery results in greater resolution of type 2 diabetes than all other bariatric surgical procedures, and it is hypothesized that this procedure has specific beneficial effects on glucose…
- Trial name
- BPD-Mingrone (NCT03111953)
- Testing
- Roux-en-Y Gastric Bypass Surgery, Biliopancreatic Diversion Surgery
- Where
- Italy
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Washington University School of Medicine
Obesity, Hypoglycemia Post Gastric Bypass Surgery
GLP1R-imaging in Post-RYGB Hypoglycemia
In order to evaluate the difference in beta cell mass in patients with and without hyperinsulinemic hypoglycemia after Roux en Y gastric bypass (RYGB) investigators aim to compare quantitative PET imaging of the pancreas between…
- Conditions
- Obesity, Hypoglycemia Post Gastric Bypass Surgery, Hyperinsulinemic Hypoglycemia
- Trial name
- NCT05597475
- Testing
- GLP-1R PET
- Where
- Netherlands
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Rijnstate Hospital
Atrial Fibrillation, Obesity and Obesity-related Medical Conditions
Metabolic Surgery for Atrial Fibrillation Elimination
Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. It is estimated that between 3 and 6 million Americans are currently living with AF, while 12 million people in the United States will have AF in 2030.
- Trial name
- METSAFE (NCT07027969)
- Testing
- Roux-en-Y Gastric Bypass or Sleeve Gastrectomy, Anti-Obesity Medication (AOM) treatment
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Ali Aminian
Overweight and Obesity, Type 2 Diabetes
Fat Metabolites and Gut Hormones
To investigate the effects of different fat metabolites on gut hormone secretion in gastric bypass operated subjects and BMI-matched controls.
- Conditions
- Overweight and Obesity, Type 2 Diabetes, Bariatric Surgery, Gut Hormones
- Trial name
- NCT03223389
- Testing
- C-8 dietary oil, Tricaprylin, Olive oil
- Where
- Denmark
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Morbid Obesity, Metabolic Syndrome
FMT in Obesity: RYGB vs. LEAN vs. Autologous FMT
This double-blinded proof-of-concept study is proposed to explore the effects of fecal microbiota transfer (FMT) in human subjects.
- Conditions
- Morbid Obesity, Metabolic Syndrome, Diabetes, PreDiabetes
- Trial name
- DACH (NCT06268990)
- Testing
- Fecal microbiota transplantation
- Where
- Austria
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- Wiebke Kristin Fenske
Bariatric Surgery Candidate, Bariatric Surgical Procedure
Fat Taste Sensory Study
Fat is the most energy dense macronutrient and consuming fat has been positively correlated to obesity. Individuals afflicted with obesity crave fat more frequently, have a higher preference for fatty taste, and consume a higher…
- Trial name
- FaTSS (NCT03540693)
- Testing
- RYGB, SG, LAGB
- Where
- United States
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Illinois at Urbana-Champaign