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The Impact of Pancreatic Islet Cell Allotransplantation on Cognitive Function in Type 1 Diabetes Mellitus

Diabetes Mellitus, Type 1 Clinical Trial

Official title:
The Impact of Pancreatic Islet Cell Allotransplantation on Cognitive Function and Brain Fuel Utilization in Patients With Type 1 Diabetes and Hypoglycemia Unawareness

Clinical Trial Summary

In patients with Type 1 Diabetes Mellitus, hypoglycemia (low blood sugar) is the rate-limiting step to achieve glucose level control. As a result, understanding the body's responses (including the brain's response) to hypoglycemia is essential for the effective treatment of patients with T1DM. The purpose of this research is to determine whether pancreatic islet cell allotransplantation to restore normoglycemia (normal blood glucose levels) in Type 1 Diabetic patients with hypoglycemia unawareness alters brain fuel utilization and cognitive performance under euglycemic (blood sugar at 100 mg/dl) and hypoglycemic (blood sugar at 50 mg/dl) conditions. Three groups of subjects will be studied: (1) T1DM patients with a history of severe hypoglycemia and/or hypoglycemia unawareness who have been selected for pancreatic islet cell allotransplantation; (2) T1DM patients who also have a history of severe hypoglycemia and/or hypoglycemia unawareness; (3) nondiabetic subjects. All subjects will undergo identical testing including: (a) screening; (b) neuropsychological testing; (c) and functional magnetic resonance imaging (fMRI) during euglycemic and hypoglycemic conditions.

Clinical Trial Description

n/a

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00590876
Study type Observational
Source Yale University
Contact
Status Completed
Phase N/A
Start date December 2008
Completion date July 2011
View Details
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