Completed

Effect of Insulin on Endothelin-Dependent Vascular Tone in the Forearm Circulation

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What is being tested

Insulin

Drug
Who is being recruted

Metabolic Diseases+2

+ Nutritional and Metabolic Diseases

+ Glucose Metabolism Disorders

See all eligibility criteria
How is the trial designed

Treatment Study

Phase 1
Interventional
Study Start: March 1997
See protocol details

Summary

Principal SponsorNational Heart, Lung, and Blood Institute (NHLBI)
Last updated: March 4, 2008
Sourced from a government-validated database.Claim as a partner

Study start date: March 1, 1997

Actual date on which the first participant was enrolled.

Previous studies have shown that insulin may stimulate the release of endothelin (ET) from endothelial cells. This mechanism may contribute to the adverse vascular effects determined by chronic hyperinsulinemia. The aim of this study will be to evaluate the effect of local hyperinsulinemia on ET activity in the forearm circulation. To this purpose, we will assess the forearm blood flow response to ET receptor antagonism in control conditions and during intraarterial infusion of insulin. We will also measure changes in plasma ET-1 levels in response to the different pharmacological stimuli.

NCT00001624
Principal SponsorNational Heart, Lung, and Blood Institute (NHLBI)
Last updated: March 4, 2008
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details

16 patients to be enrolled

Total number of participants that the clinical trial aims to recruit.

Treatment Study

These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria

Any sex

Biological sex of participants that are eligible to enroll.

Healthy volunteers allowed

If individuals who are healthy and do not have the condition being studied can participate.

Conditions

Pathology

Metabolic DiseasesNutritional and Metabolic DiseasesGlucose Metabolism DisordersHyperinsulinismInsulin Resistance

Criteria

Between 40-65 years old. No medications. No medical problems. No serum cholesterol levels below 200 mg/dl. No contraceptives.

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.

This study has 1 location

National Heart, Lung and Blood Institute (NHLBI)

Bethesda, United StatesOpen National Heart, Lung and Blood Institute (NHLBI) in Google Maps
CompletedOne Study Center
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