- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00166036
Effect of Statins on Oxidative Stress and Endothelial Progenitor Cells (STOPCAP)
Effect of Statins on Oxidative Stress and Endothelial Progenitor Cells: Comparison of Atorvastatin With Pravastatin
Study Overview
Status
Intervention / Treatment
Detailed Description
Individuals with a high cholesterol level, diabetes or metabolic syndrome (collection of abnormalities such as high blood pressure, high triglyceride levels [fat], obesity, high blood glucose level) have an increased risk of developing a hardening of the arteries and heart disease.
A group of medications called statins, commonly used worldwide to lower cholesterol levels, are known to reduce the risk of heart disease through their effects on reducing cholesterol levels. These medications also have effects beyond the lowering of cholesterol that may help mediate their beneficial effects on the heart and blood vessels.
These include a reduced production of molecules that harm the arteries such as reactive oxygen species (ROS) and increasing the number of stem cells that help repair vessels, called endothelial progenitor cells (EPCs).
Recent studies have shown that different statins might have different effects on protecting people from developing heart disease. These differences may be due to differences in these non-cholesterol lowering processes, and are the subject of this study.
Standard of Care:
The two statins that will be used in this study, pravastatin (Pravachol ®) and atorvastatin (Lipitor®), are approved for use in people with a high cholesterol level or heart disease. These medications are generally very well tolerated with minimal side effects. They are not approved for use in patients to increase the level of EPCs or to reduce the production of ROS, and therefore are considered experimental for this indication. Currently there are no drugs that are specifically approved for these indications.
How the Problem Will be Studied:
These statins will be given to patients who have high cholesterol and either diabetes or the metabolic syndrome once a day for 12 weeks. We, the investigators at Emory, will measure the level of EPCs and ROS before and during the administration of the statin. We will also investigate how well the blood vessels dilate in response to these medications by performing an imaging study of the forearm artery using ultrasound.
The study is blinded and there is an equal chance of receiving either atorvastatin 10mg or pravastatin 80mg which are likely to lower cholesterol level by a similar amount.
How Research Will Advance Scientific Knowledge:
The goal of this study is to determine if atorvastatin will increase the number of circulating EPCs and reduce the production of ROS more than pravastatin. This may help explain the differences between these drugs that have been observed in some recently published trials.
Study Type
Enrollment (Actual)
Phase
- Phase 2
Contacts and Locations
Study Locations
-
-
Georgia
-
Atlanta, Georgia, United States, 30322
- Emory University Hospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Males or females without child bearing potential aged 21-80 years
- Fasting low-density lipoprotein (LDL) level > 120mg/dL.
Either known to be diabetic or have at least 3 components of metabolic syndrome that are defined below:
- Hypertension defined as blood pressure (BP) > 140 systolic or > 90 mmHg diastolic, or stable medical therapy for documented hypertension;
- Fasting glucose > 110 mg/dL;
- Waist > 40 inches in males, and > 35 inches in females;
- Triglycerides > 150mg/dL; or
- High-density lipoprotein (HDL) cholesterol < 40 mg/dL in males and < 50 mg/dL in females.
- Able to provide written informed consent
- Non-smoker
Exclusion Criteria:
- On any oral antioxidants or lipid lowering medications in the previous 8 weeks
- Age < 21 or > 80 years
- Premenopausal females with potential for pregnancy
- LDL cholesterol level < 120 mg/dl
- Initiation or change in dose of any concomitant medical therapy within 2 months before the study
- Uncontrolled hypertension with BP > 180 mmHg systolic and > 120 mmHg diastolic
- Current smoker
- Previous intolerance or allergy to statins
- Acute infection in previous 4 weeks
- History of substance abuse
- Uninterpretable Brachial Artery Reactivity Study
- Current neoplasm
- Chronic renal failure (creatinine > 2.5 mg/dL) or liver failure (liver enzymes > 2X normal)
- Acute coronary syndrome, heart failure, cerebrovascular accident (CVA), or coronary intervention within 3 months
- Known aortic stenosis, hypertrophic cardiomyopathy, or symptomatic heart failure.
- Inability to give informed consent
- Inability to return to Emory for follow-up
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Atorvastatin 10MG
|
12 Weeks of Oral Atorvastatin 10 mg therapy.
|
Experimental: Pravastatin 80mg
|
12 Weeks of Oral Pravastatin 80 mg therapy.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Plasma Thiobarbituric Acid Reactive Substance (TBARS) Levels
Time Frame: Baseline &12 Weeks
|
Oxidative stress was assessed with plasma thiobarbituric acid reactive substance (TBARS) levels (an index of lipid peroxidation).Oxidative stress reflects an imbalance between the systemic manifestation of reactive oxygen species and a biological system's ability to readily detoxify the reactive intermediates or to repair the resulting damage.We hypothesized that equipotent doses of these two statins will have divergent effects on markers of oxidative stress and endothelial function.
|
Baseline &12 Weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Flow-mediated Dilatation (FMD)
Time Frame: Baseline & 12 Weeks
|
Flow-mediated dilatation (FMD) of the brachial artery was used to asses Endothelial Function.
The endothelium, by releasing nitric oxide (NO), promotes vasodilation and inhibits inflammation, thrombosis, and vascular smooth muscle cell proliferation.We hypothesized that equipotent doses of these two statins will have divergent effects on markers of oxidative stress and endothelial function.
|
Baseline & 12 Weeks
|
Collaborators and Investigators
Sponsor
Publications and helpful links
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
- Glucose Metabolism Disorders
- Metabolic Diseases
- Insulin Resistance
- Hyperinsulinism
- Lipid Metabolism Disorders
- Hyperlipidemias
- Dyslipidemias
- Metabolic Syndrome
- Hypercholesterolemia
- Molecular Mechanisms of Pharmacological Action
- Enzyme Inhibitors
- Antimetabolites
- Anticholesteremic Agents
- Hypolipidemic Agents
- Lipid Regulating Agents
- Hydroxymethylglutaryl-CoA Reductase Inhibitors
- Atorvastatin
- Pravastatin
Other Study ID Numbers
- 1038-2004
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.
Clinical Trials on Diabetes Mellitus
-
University of Colorado, DenverMassachusetts General Hospital; Beta Bionics, Inc.CompletedDiabetes Mellitus, Type 1 | Type 1 Diabetes | Diabetes type1 | Type 1 Diabetes Mellitus | Autoimmune Diabetes | Diabetes Mellitus, Insulin-Dependent | Juvenile-Onset Diabetes | Diabetes, Autoimmune | Insulin-Dependent Diabetes Mellitus 1 | Diabetes Mellitus, Insulin-Dependent, 1 | Diabetes Mellitus, Brittle | Diabetes Mellitus, Juvenile-Onset and other conditionsUnited States
-
Guang NingRecruitingType 2 Diabetes Mellitus | Type1 Diabetes Mellitus | Monogenetic Diabetes | Pancreatogenic Diabetes | Drug-Induced Diabetes Mellitus | Other Forms of Diabetes MellitusChina
-
Meir Medical CenterCompletedDiabetes Mellitus Type 2 | Diabetes Mellitus, Non-insulin Dependant | Diabetes Mellitus, on Oral Hypoglycemic Treatment | Adult Type Diabetes MellitusIsrael
-
Medical College of WisconsinMedical University of South CarolinaCompletedDiabetes Mellitus | Type 2 Diabetes Mellitus | Adult-Onset Diabetes Mellitus | Non-Insulin-Dependent Diabetes Mellitus | Noninsulin Dependent Diabetes Mellitus, Type IIUnited States
-
Hanmi Pharmaceutical Company LimitedUnknownType2 Diabetes Mellitus | Type1 Diabetes MellitusUnited States
-
Peking Union Medical College HospitalUnknownType 2 Diabetes Mellitus | Type 1 Diabetes Mellitus | Gestational Diabetes Mellitus | Pancreatogenic Diabetes Mellitus | Pregestational Diabetes Mellitus | Diabetes Patients in Perioperative PeriodChina
-
SanofiCompletedType 1 Diabetes Mellitus-Type 2 Diabetes MellitusHungary, Russian Federation, Germany, Poland, Japan, United States, Finland
-
Medical College of WisconsinMedical University of South Carolina; National Institute of Diabetes and Digestive...Active, not recruitingDiabetes Mellitus, Type 2 | Diabetes Mellitus, Type II | Diabetes Mellitus, Adult-Onset | Diabetes Mellitus, Non-Insulin-Dependent | Diabetes Mellitus, Noninsulin DependentUnited States
-
Medical College of WisconsinNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)CompletedDiabetes Mellitus, Type 2 | Diabetes Mellitus, Type II | Diabetes Mellitus, Adult-Onset | Diabetes Mellitus, Non-Insulin-Dependent | Diabetes Mellitus, Noninsulin DependentUnited States
-
Medical University of South CarolinaNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)CompletedDiabetes Mellitus, Type 2 | Diabetes Mellitus, Type II | Diabetes Mellitus, Adult-Onset | Diabetes Mellitus, Non-Insulin-Dependent | Diabetes Mellitus, Noninsulin DependentUnited States
Clinical Trials on Atorvastatin
-
GlaxoSmithKlineCompletedDiabetes Mellitus, Type 2Korea, Republic of, Malaysia, Philippines, Thailand, Russian Federation, Mexico
-
Organon and CoCompleted
-
Obafemi Awolowo University Teaching HospitalOpen PhilanthropyRecruitingTuberculosis | Pulmonary Tuberculosis | Koch's DiseaseNigeria
-
Hippocration General HospitalCompletedCoronary Artery Disease | Atherosclerosis | Endothelial Dysfunction | Oxidative Stress | HMG-CoA Reductase Inhibitor ToxicityGreece
-
PfizerCompletedHypertriglyceridemia | Hyperlipoproteinemia Type IVUnited States, Canada
-
Organon and CoCompleted
-
Zhejiang Hisun Pharmaceutical Co. Ltd.Unknown
-
St. Olavs HospitalUllevaal University Hospital; Oslo University Hospital; University Hospital of... and other collaboratorsNot yet recruiting
-
Zhongda HospitalNot yet recruitingAcute Ischemic Stroke | Mechanical ThrombectomyChina