Assessment of Endothelial Vasomotricity After Treatment by Nicotinic Acid in Acute Coronary Syndrome — EVANACS  

Acute Coronary Syndrome (ACS) Clinical Trial

Official title: Assessment of Endothelial Vasomotricity After Treatment by Nicotinic Acid in Patients Presenting a Recent Acute Coronary Syndrome.

Status Completed

Clinical Trial Summary

The investigators' work proposes to evaluate the effectiveness of the Acid Nicotinique (Niaspan®), only molecule currently marketed, ready to raise the plasmatic levels of HDL-c. This effectiveness will be tested among patients having presented recently an acute coronary syndrome. The effectiveness of the molecule will be appreciated versus placebo after randomization.

The technique of evaluation of this effectiveness will be the analysis of the vasodilatation endothelial-dependent measured on the level huméral (by echography high resolution).

The awaited result is an improvement of 2% in value absolute of this vasodilatation between the initial test and the end of study for the patients receiving the acid nicotinic versus those receiving the placebo (3 months of treatment after inclusion). The calculation of the sample necessary to achieve this goal envisages 70 patients led at the end of the study, divided into two groups of treatment (acid nicotinic or Placebo).

Such a result if it were obtained would be higher than that found in studies evaluating the effect on the vasomotricity endothelial statins or inhibitors of the enzyme of conversion.

Clinical Trial Description

The pharmacological assumption of responsibility of the coronary disease has rested partially for a few years on the regulation of the inhibitors of the HMG CoA reductase (statins). These drugs initially address to the quantitative anomalies Lipoproteins of low density (LDL cholesterol). The objectives laid down by the national recommendations (obtaining a plasmatic rate < 1gr/l in coronary secondary prevention or among patients at the high vascular risk) or international, implies their broad regulation with the waning of the coronary syndromes. It can exist in addition among many patients of the qualitative or quantitative anomalies of the Lipoproteins of High density (HDL-c) whose correlation to the coronary risk was beforehand largely shown. The anomalies of HDL-c are not very sensitive to the hygieno-dietetic rules.

To intervene on the plasmatic levels of the lipoproteins is thus essential with the improvement of the forecast of the proven coronary patients.

The investigators know since the beginning of the years 1980 (work of Furchgott and Moncada) that the endothelium is a powerful integrator of the vascular risk, in particular in its aspect of regulation vasomotrice.

Methods of investigation of the endothelium were developed on the coronary floor or the level of the peripheral arteries to analyze the vasomotricity endothelial dependent. Among these methods the study of the vasomotricity on the level huméral is validated, largely used and correlated in many tests with the forecast of the patients presenting a high vascular risk. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Acute Coronary Syndrome
• Acute Coronary Syndrome (ACS)
• Syndrome

• NCT number: NCT00855257
• Study type: Interventional
• Source: French Cardiology Society
• Status: Completed
• Phase: Phase 3
• Start date: June 2007
• Completion date: May 2009