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Clinical Trial Summary

This study evaluates differences in brain function and cognitive performance in adolescents with type 2 diabetes (T2D) compared to non diabetic controls (both obese and lean) and correlates these changes with obesity, insulin resistance, and glycemic control in youth with T2D.


Clinical Trial Description

This is a cross-sectional study examining neurocognitive function and brain activity in resting state and during working memory and executive function tasks using blood oxygen level dependent (BOLD) functional MRI (fMRI) during hyperinsulinemic euglycemic and hyperglycemic clamps in obese adolescents with T2D compared to non-diabetic obese and lean controls. The investigators will measure glycemic control (acute hyperglycemia during clamps and glycemic variability) and insulin resistance to examine their association with neurocognitive metrics and brain functional activity.

There will be one screening visit and three study visits for subjects with T2D. One visit will consist of neurocognitive testing and dual energy X-ray absorptiometry (DEXA) of the whole body to assess body composition including fat mass. In the other two visits, subjects with T2D will undergo normal and high glucose clamps during fMRI.

Obese and lean control subjects will have one screening visit and two study visits, one for neurocognitive testing and DEXA and another for fMRI without glucose clamps. All subjects will have a blood sample obtained at the screening visit.

Only adolescents with type 2 diabetes will wear a continuous glucose monitor (CGM) for 6 days prior to neuroimaging to determine glycemic variability. A1C will be assessed at baseline.

Parents of subjects will also have abbreviated IQ testing. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03461510
Study type Interventional
Source Nemours Children's Clinic
Contact
Status Completed
Phase N/A
Start date December 5, 2017
Completion date January 30, 2019

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