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Effect of Irbesartan on Endothelial Function of the Retinal Vasculature in Patients With Hypercholesterolemia

Hypercholesterolemia Clinical Trial

Official title:
A Randomised, Double-blind, Placebo-controlled, Phase III Trial to Study the Effect of Irbesartan on Endothelial Function of the Retinal Vasculature in Patients With Hypercholesterolemia

Clinical Trial Summary

The retinal vasculature is morphologically and functionally related to the cerebral vessels due to its common origin from the internal carotid artery. A recent study demonstrated that endothelium-dependent vasodilation of the retinal vasculature is impaired in patients with essential hypertension, which is a strong risk factor for stroke. Furthermore, AT1-receptor blockade was demonstrated to improve retinal endothelium-dependent vasodilation in these hypertensive patients. Hypercholesterolemia is also a risk factor for ischemic stroke and impairment of endothelial function has been observed in various vascular beds in hypercholesterolemic patients, including the coronary and the forearm vasculature. Whether endothelial function of the retinal vasculature is impaired in patients with hypercholesterolemia has not yet been investigated. In patients with stroke, AT1-receptor blockade and angiotensin-converting enzyme inhibition have beneficial effects on clinical outcome. Alterations of endothelial function of the cerebral vasculature might be one pathogenetic factor for the beneficial clinical outcome. To further address this issue, the present study was designed to test the hypothesis that endothelium-dependent vasodilation of the retinal vasculature is impaired in hypercholesterolemic patients and that endothelial function can be improved by AT1-receptor blockade.

Clinical Trial Description

see above ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00152698
Study type Interventional
Source University of Erlangen-Nürnberg Medical School
Contact
Status Completed
Phase Phase 3
Start date November 2009
Completion date December 2009
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