- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00934336
Importance in Type 1 Diabetes Patients of an Optimized Control of Post-Prandial Glycaemia on Oxidant Stress Prevention (ITOPOS)
The aim of this study is to determine whether postprandial hyperglycaemia plays an important role in oxidative stress phenomena and influences their harmful effects on the arterial wall.
25 type 1 diabetic patients practicing FIT and with an HbA1c value of 8 percent or less at the beginning of the study will be recruited. The 25 control subjects will be recruited after the patients, so that they can be paired by age and sex.
Patients will be randomized via an alternative cross over study design for 2 periods of 3 months, i.e. preprandial or postprandial injection of an ultra fast acting analog. During the 6 months of the study, slow acting analog doses will be adjusted on the basis of basal glycaemia values. The fast acting analog doses will be adjusted on the basis of an optimized algorithm available on each patient's PDA phone electronic diary.
Blood and urine samples will be collected at M0, M3 and M6 to evaluate the stress oxidant grade and its consequence on atherogenesis:
Oxidative Stress evaluation: plasma parameters (lipid peroxide derivatives, semicarbazide sensitive oxidase amine activity), erythrocyte and leukocyte cell parameters (reduced and oxidised glutathion, dismutase superoxide activity (SOD) Cu and Mn dependent, glutathion peroxidase, and catalase), urinary parameters (isoprostane F2) Evaluation of consequences of oxidative stress on atherogenesis processes: inflammatory parameters (CRP, TNFa, IL 6), adhesion molecules (VCAM 1, ICAM 1, P selectine), adipokines (leptine, resistine, adiponectine), coagulation factors (PAI 1), platelet and endothelial microparticles, The pre and postprandial glycaemic stability of each patient will be monitored using PDA phone systems, and HbA1c will be measured at M0, M3 and M6.
Expected results and outcomes:
It is important to know if, in patients with comparable glycaemic stability, these two insulin treatment regimens are associated with significant differences in oxidative stress and anti oxidant defenses.
These results may help us to define a postprandial insulin treatment regimen (which is more flexible as regards meals) or a preprandial insulin treatment regimen (less flexible for meals but maybe less harmful in terms of limitation of oxidative stress).
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
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Corbeil Essonnes, France, 91106
- CH SUd Francilien
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Type 1 Diabetes
- treaties by basal / bolus with a ultra rapid analogue or a pump with a ultra rapid analogue
- Adults between 18 and 50 years old
- Patients practicing FIT
- Written informed consent obtained prior to enrollment in the study
- HbA1c ≤ 8%
Exclusion Criteria:
- Diabetes other than DT1
- Complications: coronary or peripheral arteriopathy
- Pathologies being able to interfere with the study: HTA, dyslipidemia, nicotinism, inflammatory , cancerous pathology…
- Psychiatric pathologies incompatible with the study
- Pregnancy
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: preprandial injection
pre-prandial injection of an ultra-fast-acting analog during 3 months, then post-prandial injection of an ultra-fast-acting analog during 3 other months.
|
These results may help us to define a post prandial insulin treatment regimen (which is more flexible as regards meals) or a pre prandial insulin treatment regimen (less flexible for meals but maybe less harmful in terms of limitation of oxidative stress).
|
Experimental: post-prandial injection
post-prandial injection of an ultra-fast-acting analog during 3 months then pre-prandial injection of an ultra-fast-acting analog during 3 other months.
|
These results may help us to define a post prandial insulin treatment regimen (which is more flexible as regards meals) or a pre prandial insulin treatment regimen (less flexible for meals but maybe less harmful in terms of limitation of oxidative stress).
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Assay of isoprostane-F2, an indicator of lipid peroxidase derivative production, in the 24 hour urine
Time Frame: T0, T3 months, T6 months
|
T0, T3 months, T6 months
|
Collaborators and Investigators
Investigators
- Study Chair: FEVE Bruno, MD PH, Centre d'Etudes et de Recherche pour l'Intensification du Traitement du Diabète
- Principal Investigator: CHARPENTIER Guillaume, PH, CH SUd Francilien
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 2007-A01036-47
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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