Evidence map›Paper›PMID 20644943›Full record

Trial reportClinical research in cardiology : official journal of the German Cardiac Society2011

Lack of evidence for pleiotropic effects of clopidogrel on endothelial function and inflammation in patients with stable coronary artery disease: results of the double-blind, randomized CASSANDRA study.

Mir Abolfazl Ostad, Eva Nick, Vitor Paixao-Gatinho, Boris Schnorbus, Robert Schiewe, Peter Tschentscher, Thomas Munzel, Ascan Warnholtz

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in Clinical research in cardiology : official journal of the German Cardiac Society, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.3field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 27 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Chronic protection against ischemia and reperfusion-induced endothelial dysfunction during therapy with different organic nitrates.Clinical research in cardiology : official journal of the German Cardiac Society · 2012
    Trial
  4. Ivabradine for the treatment of stable angina pectoris in octogenarians.Clinical research in cardiology : official journal of the German Cardiac Society · 2011
    Trial
  5. Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Mir Abolfazl OstadDepartment of Medicine II, Mainz University Medical Center, Universitätsmedizin der Johannes Gutenberg-Universität Mainz, Langenbeckstrasse 1, 55101, Mainz, Germany.
Eva Nick
Vitor Paixao-Gatinho
Boris Schnorbus
Robert Schiewe
Peter Tschentscher
Thomas Munzel
Ascan Warnholtz
Johannes Gutenberg University Mainz · DEUniversity Medical Center Hamburg-Eppendorf · DEUniversity Medical Center of the Johannes Gutenberg University Mainz · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecently we have demonstrated a dose-dependent improvement of endothelial function after administration of a single loading dose of clopidogrel in patients with coronary artery disease (CAD). We therefore hypothesized that chronic therapy with clopidogrel may improve endothelial function in patients with CAD.

methodsIn a double-blind, randomized, monocentric study 120 patients with established CAD were randomized to one of the following treatment arms: clopidogrel 75 mg q.d., acetylsalicylic acid (ASA) 100 mg q.d., or a combination of ASA and clopidogrel. Endothelium-dependent flow-mediated dilation (FMD) and endothelium-independent nitroglycerin-mediated dilation (NMD) of the brachial artery were determined before and after 28 days of treatment. The effect of clopidogrel was monitored in vitro by ADP-induced platelet aggregation in platelet-rich plasma. Effects of treatment on platelet superoxide production were measured by lucigenin-enhanced chemiluminescence in washed platelets. C-reactive protein, RANTES and monocyte chemoattractant protein-1 were determined as inflammatory markers. The study was registered as ISRCTN34097747.

resultsTreatment groups were comparable regarding age, gender, cardiovascular risk factor distribution and concomitant medication. FMD [median (IQR) ASA, +0.8 (-2.0; 2.7); ASA + clopidogrel, ±0 (-2.0; 2.9); clopidogrel, +1.0 (-1.1; 2.4); P = n.s.], NMD, platelet superoxide production or inflammatory markers remained unchanged in all treatment groups.

conclusionWe conclude that the beneficial effects of short-term effects of clopidogrel on endothelial function of patients with CAD are abolished after long-term clopidogrel treatment.

Indexed as

ClopidogrelComorbidityCoronary Artery DiseaseDouble-Blind MethodEndothelium, VascularEvidence-Based MedicineFemaleGermanyHumansIncidenceMaleMiddle AgedPlatelet Aggregation InhibitorsRisk AssessmentRisk FactorsTiclopidineClopidogrelPlatelet Aggregation InhibitorsTiclopidine

Identifiers

PMID20644943
OpenAlexW2017732311

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.