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PI relocated to another Institution
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| Name | Class |
|---|---|
| National Institutes of Health (NIH) | NIH |
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Gastric bypass (GBP) and laparoscopic adjustable banding (AGB) are common procedures that can result in significant weight loss and significantly improve type 2 diabetes in 40-80% of cases. The mechanism and time course of these changes have not been well studied and are poorly understood. The primary aim of this study is to investigate the potential weight-independent mechanisms of diabetes remission after GBP, by comparing GBP and AGB subjects after similar weight loss.
All participants will be tested before and then after 10 and 20-30% weight loss after either GBP or AGB surgery. Subjects will undergo an oral glucose tolerance test (OGTT) an isoglycemic intravenous glucose test (IVGT) to assess the incretin effect, a measure of insulin sensitivity by an intravenous insulin sensitivity test (IVGTT) and body composition measurements.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| gastric bypass | Surgical group of obese patients with type 2 diabetes undergoing gastric bypass surgery | ||
| gastric banding | surgical group of obese patients with type 2 diabetes undergoing gastric banding |
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| Measure | Description | Time Frame |
|---|---|---|
| Change in Incretin Effect | Effect of GBP and AGB on incretin hormones glucagon-like peptide-1 (GLP-1) and gastric inhibitory peptide (GIP) | Before surgery, 1, 12, and 24 months post |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Body Composition | Body composition measurements to determine body volume, size, and fat | Before surgery, 12, and 24 months post |
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Inclusion Criteria:
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severly obese patients with type 2 diabetes undergoing gastric bypass or gastric banding
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| Name | Affiliation | Role |
|---|---|---|
| Blandine Laferrere, MD | New York Obesity Nutrition Research Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| St. Luke's Roosevelt Hospital-New York Obesity Nutrition Research Center | New York | New York | 10025 | United States |
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| ID | Term |
|---|---|
| D003924 | Diabetes Mellitus, Type 2 |
| D007333 | Insulin Resistance |
| ID | Term |
|---|---|
| D003920 | Diabetes Mellitus |
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
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| D004700 | Endocrine System Diseases |
| D006946 | Hyperinsulinism |