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Effects of Clopidogrel on Blood Pressure

2014-08-27 03:14:07 | BioPortfolio

Summary

Context: Soluble CD40 ligand (sCD40L) released from activated platelets induces inflammatory transformation of the vascular endothelium and is an independent predictor of cardiovascular events. Arterial hypertension is associated with platelet activation, increased sCD40L levels and endothelial dysfunction suggesting that inhibition of platelet-derived sCD40L release may improve endothelial function and lower blood pressure (BP).

Objective: To determine the effects of clopidogrel on sCD40L, endothelial function and BP.

Design: Randomized, controlled, investigator-blinded, parallel-group, 2-phase trial in patients with coronary artery disease and essential arterial hypertension and those without hypertension.

Intervention: Participants receive a single 600-mg clopidogrel loading dose (phase I) followed by a daily 75-mg clopidogrel maintenance dose over 28 days (phase II).

Outcome Measures: Primary outcome measure is the change in BP from baseline. Secondary outcome measures are changes in biomarkers of platelet and endothelial function and their correlation with BP.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment

Conditions

Blood Pressure

Intervention

Clopidogrel, Clopidogrel, Clopidogrel, Clopidogrel

Location

University of Cologne
Cologne
Germany
D-50931

Status

Completed

Source

University of Cologne

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:14:07-0400

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PubMed Articles [9095 Associated PubMed Articles listed on BioPortfolio]

Acute myocardial infarction occurring while on chronic clopidogrel therapy ('clopidogrel failure') is associated with high incidence of clopidogrel poor responsiveness and stent thrombosis.

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CHARACTERIZATION OF BINDING SITES OF CLOPIDOGREL AND INTERFERENCE OF LINOLEIC ACID AT THE BINDING SITE ON BOVINE SERUM ALBUMIN.

Binding of clopidogrel to serum albumin has been characterized in the presence and absence of linoleic acid by equilibrium dialysis method where ranitidine and diazepam were used as specific probes. O...

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Medical and Biotech [MESH] Definitions

Method in which repeated blood pressure readings are made while the patient undergoes normal daily activities. It allows quantitative analysis of the high blood pressure load over time, can help distinguish between types of HYPERTENSION, and can assess the effectiveness of antihypertensive therapy.

Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.

A response by the BARORECEPTORS to increased BLOOD PRESSURE. Increased pressure stretches BLOOD VESSELS which activates the baroreceptors in the vessel walls. The net response of the CENTRAL NERVOUS SYSTEM is a reduction of central sympathetic outflow. This reduces blood pressure both by decreasing peripheral VASCULAR RESISTANCE and by lowering CARDIAC OUTPUT. Because the baroreceptors are tonically active, the baroreflex can compensate rapidly for both increases and decreases in blood pressure.

PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.

The blood pressure in the VEINS. It is usually measured to assess the filling PRESSURE to the HEART VENTRICLE.

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