The Inhibition of Platelet Antiaggregating Activity of Clopidogrel by Atorvastatin Detected by Erythromycin Breath Test: a Metabolic Inhibition of Hepatic Cytochrome P450-3A
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|ClinicalTrials.gov Identifier: NCT00004564|
Recruitment Status : Unknown
Verified December 2003 by National Center for Research Resources (NCRR).
Recruitment status was: Recruiting
First Posted : February 14, 2000
Last Update Posted : June 24, 2005
The objective of this study is to determine if the action of the drug called clopidogrel, that you will start taking, will be decreased by another drug called atorvastatin, that you will also start taking. Clopidogrel is an oral antiplatelet agent that has been shown to prevent strokes and heart attacks. Atorvastatin is a cholesterol lowering agent.
Twenty adults 18-75 years of age requiring cholesterol-lowering agent and antiplatelet agent therapy will be recruited for this study during their cardiology clinic visitation. In one group, antiplatelet agent (clopidogrel) regimen will be administered first, then followed by cholesterol-lowering medication (atorvastatin). In the second group, atorvastatin will be administered first, followed by clopidogrel.
A new test called the erythromycin breath test will be administered to you three times during the study to measure how your liver will metabolize these drugs. Blood samples will also be obtained to assess platelet function. The criteria for exclusion are patient refusal or inability to give written consent, patients with allergic reaction to erythromycin, patients with known bleeding problems, liver disease, significant lung disease kidney disease and pregnancy. Patients with psychiatric impairment and documented history of substance abuse will also be excluded from the study.
|Condition or disease||Intervention/treatment||Phase|
|Hypercholesterolemia Thrombosis||Drug: Clopidogrel Drug: Atorvastatin||Not Applicable|
|Study Type :||Interventional (Clinical Trial)|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
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 ClinicalTrials.gov identifier (NCT number): NCT00004564
|Contact: Wei C. Lau, M.D.||1-734-936-4280|
|United States, Michigan|
|1G323 University Hospital, Box 0048 1500 E Medical Center Drive||Recruiting|
|Ann Arbor, Michigan, United States, 48109|