Other Clinical Trial - Risk Factors for Atherogenesis in Type 1 Diabetes

Status Completed

Clinical Trial Summary

To determine risk factors for atherogenesis in Type 1 diabetes.

Clinical Trial Description

BACKGROUND:

Individuals with Type 1 diabetes have substantially higher risk for premature atherosclerotic vascular disease (ASVD) than the general population. Risk factors for the development of ASVD have been identified, but linking them to initiation of atherosclerosis was not feasible until recently. Advances in non-invasive imaging now permit early detection of changes in blood vessel function and structure. This imaging provides an opportunity to evaluate risk factors for ASVD and vascular status in a cohort at a critical time for development and early progression of ASVD.

DESIGN NARRATIVE:

Subjects were enrolled from 1987-1992 and were followed from diabetes diagnosis. Standardized protocols for examinations and interviews were implemented and the data base included a valuable longitudinal plasma bank. Because incident cases were enrolled, information was collected from diagnosis on children, adolescents and young adults currently without symptoms of atherosclerosis. The existing database was expanded, the existing resources were used including the plasma bank, and promising new and well established clinical research techniques were incorporated by: (i) measuring plasma lipid levels on stored plasma and on newly collected blood samples, (ii) measuring triglyceride levels on newly collected blood samples, (iii) measuring urinary albumin excretion rates on newly collected specimens (already measured from diagnosis to date), and (iv) assessing endothelial function by brachial artery ultrasound, (v) measuring the intima medial thickness (IMT) of the carotid artery by ultrasound, and (vi) measuring coronary calcium by computed tomography scanning. These activities allowed pursuit of the following specific aims: 1) to determine the relationship between established risk factors for atherosclerosis and the development of pre-clinical atherosclerosis, 2) to determine the relationship between endothelial dysfunction and carotid IMT, and 3) to determine the relationship between coronary artery calcification and carotid IMT. Such information was critical in directing further efforts toward primary prevention of atherosclerosis in individuals with Type 1 diabetes mellitus. ;

Study Design

N/A

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT00035750
Study type	Observational
Source	University of Wisconsin, Madison
Contact
Status	Completed
Phase	N/A
Start date	September 2001
Completion date	August 2005

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.