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| Name | Class |
|---|---|
| University of Copenhagen | OTHER |
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Delineation of the anatomical location, cellular origin and molecular basis of gut-derived glucagon secretion
Aim: to delineate the anatomical origin, the molecular structure and precursors, the regulation and the (patho-) physiological implications of gut-derived glucagon.
Eight totally pancreatectomised patients, eight type 2 diabetes patients and eight healthy controls (age 18-80, BMI <30) with normal kidney and liver parameters and hgb> 6.5 - will be included. The participants will each undergo one screening day and one study day including a gastroduodenoscopy. Multiple biopsies will be taken at several predefined locations in the upper gastrointestinal tract. These biopsies will be analysed with different techniques including immunohistochemical staining, quantitative polymerase chain reaction (qPCR-) analyses and more to search for glucagon. After the last biopsy has been collected, 50 g of glucose dissolved in 100 ml water is infused through the enteroscope into the most proximal part of the small intestine. Hereafter blood samples for glucagon and gut hormone analyses will be collected 15, 30 and 45 min after the glucose infusion.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Totally pancreatectomised patients | Active Comparator | Oral glucose tolerance test and biopsies |
|
| Type 2 diabetes patients | Active Comparator | Oral glucose tolerance test and biopsies |
|
| Healthy control subjects | Active Comparator | Oral glucose tolerance test and biopsies |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Oral glucose tolerance test | Other | Oral glucose tolerance test and biopsies |
|
| Measure | Description | Time Frame |
|---|---|---|
| gut-derived glucagon | The primary objective is to investigate mucosal biopsies from specific regions of the upper gastrointestinal tract | 1 year |
| Measure | Description | Time Frame |
|---|---|---|
| Oral glucose tolerance test | Glucose metabolism - hormones, insulin, glucagon, glp-1 | 45 minutes |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Filip Knop, MD, PhD | University Hospital, Gentofte, Copenhagen | Study Director |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Center for Diabetes Research | Hellerup | 2900 | Denmark |
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| ID | Term |
|---|---|
| D044882 | Glucose Metabolism Disorders |
| ID | Term |
|---|---|
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |
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| ID | Term |
|---|---|
| D005951 | Glucose Tolerance Test |
| ID | Term |
|---|---|
| D001774 | Blood Chemical Analysis |
| D019963 | Clinical Chemistry Tests |
| D019411 | Clinical Laboratory Techniques |
| D019937 | Diagnostic Techniques and Procedures |
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| D003933 | Diagnosis |
| D003940 | Diagnostic Techniques, Endocrine |
| D008919 | Investigative Techniques |