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Clinical Trial Summary

Iatrogenic hypoglycemia is the most frequent acute complication of insulin therapy in people with type 1 diabetes (T1DM). Recurrent hypoglycemic events initiate a process of habituation, characterized by suppression of hypoglycemic symptoms and lead to hypoglycemia unawareness, which in itself defines a particularly high risk of severe hypoglycemia. Recent evidence suggest a pivotal role for increased brain lactate transport capacity in the pathogenesis of hypoglycemia unawareness. However, there is uncertainty about the magnitude of this effect and whether such excess brain lactate is oxidizes as a glucose-sparing alternative energy source or acts as a metabolic regulator controlling brain glucose metabolism, oxygen consumption and cerebral blood flow.

Objective: The primary objective of this study is to investigate the effect of hypoglycemia on brain lactate accumulation and regional cerebral blood perfusion in humans. The secondary objective is to assess whether this effect is a related to hypoglycemia unawareness or a consequence of T1DM per se.

Hypothesis: The investigators hypothesize that hypoglycemia stimulates lactate transport over the blood-brain barrier leading to cerebral lactate accumulation and that this lactate accumulation is a function of prior hypoglycemic exposure frequency contributing to clinical hypoglycemia unawareness. Furthermore, the investigators expect that this effect of hypoglycemia on brain lactate accumulation is related to changes in cerebral blood flow (CBF).


Clinical Trial Description

n/a


Study Design

Allocation: Non-Randomized, Endpoint Classification: Pharmacokinetics/Dynamics Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Basic Science


Related Conditions & MeSH terms


NCT number NCT02146404
Study type Interventional
Source Radboud University
Contact
Status Completed
Phase N/A
Start date August 2014
Completion date October 2015

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