INSUlin Regimens and VASCular Functions — INSUVASC  

Type 2 Diabetes Clinical Trial

Official title: Effects of Different Insulin Regimens on Artery Compliance, Endothelium Function and Autonomic Cardiac Function in Patients With Poorly Controlled Type 2 Diabetes: a Pilot Study

Status Completed

Clinical Trial Summary

Vago-sympathetic activity, arterial stiffness and endothelial function are integrators of cardiovascular risk. The aim of this pilot study is, in type 2 diabetic patients now requiring insulin, to compare the effects of improving glycemic control on these parameters with 3 different insulin regimens which will act especially at fasting or in post-prandial periods or both. Non invasive explorations will be performed before randomization and after 4 to 5 weeks of insulin therapy, at fasting and each hour after a standardized breakfast.

Clinical Trial Description

Vago-sympathetic activity, arterial stiffness and endothelial function are integrators of cardiovascular risk. The effect of controlling fasting or post-prandial blood glucose or both on these parameters has not been studied in type 2 diabetic patients.

The aim of this pilot study is to compare the effects of improving fasting or post-prandial blood glucose glycemic control or both with 3 different insulin regimens for 4 to 5 weeks, on vago-sympathetic activity, arterial stiffness and endothelial function.

Patients will be recruited in the department of Endocrinology-Diabetology-Nutrition of Jean VERDIER hospital, AP-HP, and the department of Endocrinology and Metabolism of AVICENNE hospital, BOBIGNY, AP-HP, France. After an half day of cardiovascular explorations, 42 patients will be randomized in 3 groups determining their treatment for the following 4-5 weeks : insulin therapy with detemir at dinner or bed time, or with aspart at each meal, or with both of them.

Investigations will be performed in the morning 1) at the time of randomisation and 2) 4-5 weeks after the beginning of insulin therapy. We will evaluate at fasting and each hour after a standardized breakfast biological and metabolic parameters, arterial stiffness, endothelial function and nervous autonomic system with non-invasive devices: Sphygmocor®, Finapres®, laser-doppler et Endopat2000®. Body composition will be evaluated with impedance maestri and BodPod®. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Diabetes Mellitus, Type 2
• Type 2 Diabetes

• NCT number: NCT01022658
• Study type: Interventional
• Source: Assistance Publique - Hôpitaux de Paris
• Status: Completed
• Phase: N/A
• Start date: January 2010
• Completion date: July 2011