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Clinical Trial Summary

Type 2 diabetes (T2D) in youth is increasing in prevalence in parallel with the obesity epidemic. In the US, almost half of patients with renal failure have DKD, and ≥80% have T2D. Compared to adult-onset T2D, youth with T2D have a more aggressive phenotype with greater insulin resistance (IR), more rapid β-cell decline and higher prevalence of diabetic kidney disease (DKD), arguing for separate and dedicated studies in youth-onset T2D. Hyperfiltration is common in youth with T2D, and predicts progressive DKD. Hyperfiltration may also be associated with early changes in intrarenal hemodynamic function, including increased renal plasma flow (RPF) and glomerular pressure. Despite the high prevalence and gravity of DKD in youth-onset T2D, widely effective therapeutic options are lacking. The investigators' preliminary data support a strong association between IR and hyperfiltration in youth-onset T2D, but the pathology contributing to this relationship remains unclear. A better understanding of the pathophysiology underlying hyperfiltration and its relationship with IR is critical to inform development of new therapeutics. The investigators' overarching hypotheses are that: 1) hyperfiltration in youth-onset T2D is associated with changes in intrarenal hemodynamics, resulting in increased renal oxygen demand, 2) the demand is unmet by the inefficient fuel profile associated with IR (decreased glucose oxidation and increase free fatty acid [FFA] oxidation), resulting in renal hypoxia and ultimately renal damage. To address these hypotheses, the investigators will measure peripheral insulin sensitivity, adipose insulin sensitivity (FFA suppression), glomerular filtration rate (GFR), RPF, and renal oxygenation in youth with T2D (n=60), obesity (n=20) and in lean (n=20) controls. To further investigate the mechanisms of renal damage in youth with T2D, two optional procedures are included in the study: 1) kidney biopsy procedure and 2) induction of induced pluripotent stem cells (iPSCs) to assess morphometrics and genetic expression of renal tissue.


Clinical Trial Description

n/a


Study Design


Related Conditions & MeSH terms


NCT number NCT03584217
Study type Interventional
Source University of Colorado, Denver
Contact
Status Active, not recruiting
Phase Phase 1/Phase 2
Start date October 1, 2018
Completion date October 30, 2023

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