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Effects of Atorvastatin on Endothelial Progenitor Cells After Coronary Surgery

This study has been completed.
Turkish Society of Hematology
Information provided by (Responsible Party):
A. Ruchan Akar, Ankara University Identifier:
First received: March 16, 2010
Last updated: July 4, 2014
Last verified: July 2014

Experimental data have demonstrated favourable effects of statins on endothelial progenitor cell (EPC) mobilization from the bone marrow, and cardiac homing. The purpose of the present prospective randomized controlled trial is to determine the effects of aggressive atorvastatin treatment (40 mg daily 2-weeks prior to surgery) on the number of endothelial progenitor cells (EPCs) after cardiopulmonary bypass by comparing with placebo.

Condition Intervention Phase
Coronary Artery Bypass Surgery
Elective Surgical Procedure
Drug: Atorvastatin
Drug: Placebo
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Assessment of the Effects of Atorvastatin on Endothelial Progenitor Cells After Coronary ByPass Surgery; A Randomized Controlled Trial

Resource links provided by NLM:

Further study details as provided by Ankara University:

Primary Outcome Measures:
  • Endothelial Progenitor Cells (EPCs) Count (Cells/µl) [ Time Frame: Postoperative 6th hours ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Left Ventricular Ejection Fraction (LVEF %) Measured at 30 Days Postoperatively [ Time Frame: Change between statin and placebo groups at 30 days postoperatively ] [ Designated as safety issue: No ]
  • High Sensitive C-reactive Protein (hsCRP mg/L) [ Time Frame: Postoperative 6th hours ] [ Designated as safety issue: No ]
  • High Sensitive C-reactive Protein (hsCRP mg/L) [ Time Frame: 5 days postoperatively ] [ Designated as safety issue: No ]

Enrollment: 60
Study Start Date: February 2010
Study Completion Date: October 2010
Primary Completion Date: July 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: Atorvastatin
Hydroxymethylglutaryl-CoA Reductase Inhibitors
Drug: Atorvastatin
40mg/day once daily for two weeks prior to surgery
Other Name: Ator
Placebo Comparator: Placebo
Atorvastatin like pill
Drug: Placebo
1tb/day once daily for two weeks prior to surgery
Other Name: Placebo tablets matched to atorvastatin

Detailed Description:

Endothelial progenitor cells, a subgroup of hematopoietic stem cells have a significant role in vascular homeostasis. In animal models of ischemia, endothelial progenitor cells are rapidly incorporated into sites of neovascularization, have the potential to induce and augment vasculogenesis/ angiogenesis, prevent cardiomyocyte apoptosis in peri-infarct regions, and reduce adverse remodeling. Treatment with atorvastatin has been shown to increase endothelial progenitor cell count in patients with coronary artery disease. Therefore, we will investigate whether atorvastatin augments the number of endothelial progenitor cells after cardiopulmonary bypass in patients undergoing coronary artery bypass surgery (CABG). Thus, we conducted a randomized double-blind, placebo-controlled, 2-way parallel trial in 60 patients undergoing coronary artery bypass surgery. Patients will receive either 2-week treatment with atorvastatin or placebo prior to surgery. Endothelial progenitor cells will be quantitated by flow cytometric phenotyping obtained from peripheral blood samples. In addition, cardiac markers (CK-MB mass, cardiac troponin-I), biochemical profile, liver function tests, high sensitive C-reactive protein (hsCRP) and coagulation profile will be determined at 4 time points: 1) preoperatively (baseline); 2) 6 hours after the end of cardiopulmonary bypass; 3) 24 hours after surgery; 4) 5th days postoperatively. Clinical, operative characteristics, cardiac markers, high sensitive C-reactive protein and endothelial progenitor cell count will be compared between the groups. Adverse outcomes will also be noted and reported.


Ages Eligible for Study:   30 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients undergoing elective isolated coronary artery bypass surgery with on-pump technique
  • Written informed consent

Exclusion Criteria:

  • Concomitant valve or aortic surgery
  • Left ventricular aneurysm repair
  • Re-operation
  • Emergency surgery
  • History of myocardial infarction within less than 4 weeks
  • Hepatic impairment
  • Chronic renal impairment
  • Drug related side effects (allergy or hypersensitivity)
  • Familial Hyperlipidemia
  • Autoimmune conditions which require steroids
  Contacts and Locations
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Please refer to this study by its identifier: NCT01096875

Ankara University Medical Faculty, Department of Cardiovascular Surgery
Ankara, Cebeci, Turkey, 06340
Sponsors and Collaborators
Ankara University
Turkish Society of Hematology
Study Director: RUCHAN AKAR, Assoc. Prof. Ankara University Medical Faculty, Department of Cardiovascular Surgery Ankara, Turkey, 06340
Study Chair: ONDER ASLAN, Prof. Ankara University Medical Faculty, Department of Hematology Ankara, Turkey
  More Information

No publications provided by Ankara University

Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: A. Ruchan Akar, Professor, Consultant Cardiovascular Surgeon, Ankara University Identifier: NCT01096875     History of Changes
Other Study ID Numbers: UMT0043
Study First Received: March 16, 2010
Results First Received: February 10, 2013
Last Updated: July 4, 2014
Health Authority: Turkey: Ministry of Health

Keywords provided by Ankara University:
Endothelial progenitor cells
Coronary surgery

Additional relevant MeSH terms:
Anticholesteremic Agents
Enzyme Inhibitors
Hydroxymethylglutaryl-CoA Reductase Inhibitors
Hypolipidemic Agents
Lipid Regulating Agents
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Therapeutic Uses processed this record on March 02, 2015