Last updated on March 2018

The Effects of Liraglutide on Sudomotor Function and Inflammation in Type 2 Diabetes


Brief description of study

The purpose of this study is to conduct an interventional, one year, randomized, double blind, placebo-controlled trial with Liraglutide in patients with type 2 diabetes (diabetes duration of >6 months and <10 years, HbA1c <10%) to evaluate its effects on the peripheral autonomic nervous system, as well as inflammatory markers, and measures of oxidative and nitrosative stress.

Detailed Study Description

The investigators propose to examine the effects of GLP-1 receptor agonist Liraglutide on autonomic sudomotor function and endothelial and neurovascular functions as well as markers of inflammation in patients with type 2 diabetes mellitus (T2DM). The primary objective will be changes in peripheral autonomic function using sudorimetry (Sudoscan) after 1 year of treatment.

The secondary objectives include changes on markers of inflammation and oxidative/nitrosative stress including C-reactive protein (CRP), interleukin 1 beta (IL-1), Interleukin 6 (IL6), interleukin 12 (IL12), interleukin 10 (IL10), tumor necrosis factor (TNF ), plasminogen activator Inhibitor 1 (PAI-1), superoxide dismutase (SOD), nitrotyrosine, carboxymethyl-lysine (CML), thiobarbituric acid reactive substances (TBARS), and asymmetric dimethylarginine (ADMA). Additional objectives include changes in neurovascular and endothelial function, measured by continuous Laser Doppler assessment of skin blood flow in response to different stimuli; and changes in sensory-motor peripheral nerve function, measured by clinical neuropathy scores (NSS & NIS), quantitative sensory testing and nerve conduction testing.

The aim of this study is to capture patients early in the disease process, when autonomic dysfunction is still potentially reversible. Several studies have shown the presence of autonomic imbalance in the early stages of diabetes and even in the pre-diabetic state (impaired glucose tolerance, impaired fasting glucose, and metabolic syndrome). We hypothesize that by treating type 2 diabetic patients with Liraglutide early in the disease process (<10 years of diagnosis), we will be able to improve peripheral autonomic imbalance, endothelial and neurovascular function, and reduce inflammation and oxidative/nitrosative stress. This will shed further insight into the mechanisms by which glucagon-like peptide-1 (GLP-1) exerts a neuroprotective role and improves the inflammatory process. The possibility of improving autonomic imbalance, endothelial function and inflammation may have important impact in the development of new potential therapeutic strategies to abrogate the microvascular complications of diabetes

Clinical Study Identifier: NCT03426085

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Aaron I Vinik, MD, PhD

Strelitz Diabetes Center
Norfolk, VA United States
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