Effect of Ezetimibe on Platelet Aggregation and LDL Tendency to Peroxidation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00466401
Recruitment Status : Completed
First Posted : April 27, 2007
Last Update Posted : February 20, 2013
Merck Sharp & Dohme Corp.
Information provided by:
Ziv Hospital

Brief Summary:

The aim of our study is to Estimate the reduction of LDL by ezetimibe in hypercholesterolemic patients on simvastatin.Investigate the effect of LDL lowering by ezetimibe on platelet activity and LDL tendency to peroxidation in hypercholesterolemic patients on simvastatin therapy

The hypothesis is that:

  1. LDL lowering by ezetimibe on-top of simvastatin in patients on fixed dose of simvastatin can reduce platelet aggregation, due to the potential decreasing of cholesterol content in the platelet membranes.
  2. LDL lowering by ezetimibe can lower LDL tendency to peroxidation.

Condition or disease Intervention/treatment Phase
Hypercholesterolemia Drug: Simvastatin Drug: Ezetimibe Phase 4

Study Type : Interventional  (Clinical Trial)
Enrollment : 20 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Phase 4 Study on Effect of Ezetimibe on Platelet Aggregation and LDL Tendency to Peroxidation In Hypercholesterolemic Patients on Simvastatin
Study Start Date : February 2005
Actual Study Completion Date : August 2007

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  1. Hypercholesterolemic patients on stable simvastatin dose for at least one month.
  2. Age ≥18 years on stable AHA step 1 diet.
  3. Patients without CHD or with one risk factors ; LDL > 130 mg/dL and for Patients with CHD or CHD risk equivalent(clinical manifestations of non-coronary forms of atherosclerotic disease) or with 2 risk f actors (cigarette smoking, hypertension (BP ≥140/90 mm Hg or on antihypertensive medication), low HDL cholesterol (<40 mg/dL), family history of premature CHD;LDL>100 mg/dL
  4. Patients `on at least simvastatin treatment of 20 mg per day.
  5. CPK, ALT and AST < 1.5 X upper limit of normal at baseline.

Exclusion Criteria:

  1. Women currently receiving cyclical hormones.
  2. Treatment with psyllium, other fiber based laxatives, phytosterol margarines, or other OTCs that affect serum lipids, unless treated with a stable regimen for > 6 weeks and the patient agrees to continue this regimen for the duration of the trial.
  3. Oral corticosteroids unless used as replacement therapy for pituitary/adrenal disease and a stable regimen for at least 6 weeks.
  4. Lipid lowering agents including fish oils and QUESTRAN taken within 6 weeks.
  5. Active coronary heart disease: unstable angina, acute myocardial infarction, CABG or PTCA within the last 3 months.
  6. Women with childbearing potential unless on safe contraception.
  7. Psychiatric disease with defect in judgement.
  8. Severe renal or hepatic disease.
  9. Uncontrolled hypo- or hyperthyroidism.
  10. Contraindication for ezetimibe or simvastatin treatment. The patients will continue on their treatment with simvastatin for 6 weeks, and then the patients will be treated by the same dose of simvastatin combined with ezetimibe 10 mg/day for other 6 weeks.

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To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00466401

Internal Medicine Department A ,Ziv Goverment Hospital
Safed, Israel, 13100
Sponsors and Collaborators
Ziv Hospital
Merck Sharp & Dohme Corp.
Principal Investigator: Osamah Hussein, MD Ziv Hospital

Publications: Identifier: NCT00466401     History of Changes
Other Study ID Numbers: HP-5-155-S
First Posted: April 27, 2007    Key Record Dates
Last Update Posted: February 20, 2013
Last Verified: February 2013

Additional relevant MeSH terms:
Lipid Metabolism Disorders
Metabolic Diseases
Anticholesteremic Agents
Hypolipidemic Agents
Molecular Mechanisms of Pharmacological Action
Lipid Regulating Agents
Hydroxymethylglutaryl-CoA Reductase Inhibitors
Enzyme Inhibitors