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stopped by the sponsor
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There is currently no reliable, diagnostic tests of insulin resistance other than the hyperinsulinemic euglycemic clamp which, due to its constraints and cost, is reserved for research. The insulin-Regulated aminopeptidase (IRAP) protein is a direct marker of insulin-dependent glucose cell capture and thus it blood concentration seems to be a good diagnostic test of insulin resistance.
The purpose of this study is to assess a plasma essay of IRAP protein for evaluation of insulin resistance during an oral glucose tolerance test (OGTT).
This study consists of two visits, from three to fifteen days apart. Patients with different levels of insulin resistance will be enrolled in this study.
The level of insulin resistance will be estimated with a hyperinsulinemic euglycemic clamp that will be performed at the second visit.
The first visit :
The second visit includes a 3-hours hyperinsulinemic euglycemic clamp.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Experimental | Other |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Dosage of IRAP during OGTT | Diagnostic Test | Visit 1: oral glucose tolerance test. visit 2: hyperinsulinemic euglycemic clamp |
|
| Measure | Description | Time Frame |
|---|---|---|
| IRAP concentration during OGTT. | The level of insulin resistance will be estimated with a hyperinsulinemic euglycemic clamp. The specificity and sensitivity of the IRAP concentration for the diagnosis of insulin resistance will be determined at every time of the OGTT. | At the first visit (Day 0) |
| Measure | Description | Time Frame |
|---|---|---|
| Kinetic profile of IRAP concentration in 3-hours OGTT | Evolution of the concentration of IRAP at each point of the OGTT. | At the first visit (Day 0) |
| Diagnostic value of IRAP | Comparison of AUC (area under curve) of IRAP's ROC curves with that of insulin. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Service de Nutrition clinique et CRNH Auvergne | Clermont-Ferrand | France | ||||
| Inserm CIC1406, clinical research center, Grenoble Alpes university hospital |
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| ID | Term |
|---|---|
| D024821 | Metabolic Syndrome |
| ID | Term |
|---|---|
| D007333 | Insulin Resistance |
| D006946 | Hyperinsulinism |
| D044882 | Glucose Metabolism Disorders |
| D008659 | Metabolic Diseases |
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| At the first visit (Day 0) |
| Diagnostic value of IRAP | Comparison of AUC (area under curve) of IRAP's ROC curves with that of glucose. | At the first visit (Day 0) |
| Diagnostic value of IRAP | Comparison of AUC (area under curve) of IRAP's ROC curves with that of resistance indexes. | At the first visit (Day 0) |
| Diagnostic value of the concentration of other biomarkers (not yet determined) | The diagnostic value of other potential insulin resistance biomarkers will be tested using the same methodology as for IRAP. | During the first visit (Day 0) |
| Grenoble |
| 38043 |
| France |
| CRNH RhĂ´ne-Alpes et Centre Hospitalier LYON Sud | Lyon | 69000 | France |
| Endocrinologie-Diabétologie-Nutrition et CIC, CHU DE MONTPELLIER | Montpellier | France |
| D009750 |
| Nutritional and Metabolic Diseases |