Evidence map›Paper›PMID 15894768›Full record

Trial reportHeart (British Cardiac Society)2005

Allopurinol reduces B-type natriuretic peptide concentrations and haemoglobin but does not alter exercise capacity in chronic heart failure.

A D Gavin, A D Struthers

Open access · bronzeAbstract readClinical TrialRandomized Controlled Trial
In one paragraph

Trial report in Heart (British Cardiac Society), 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
4.4field-weighted citation impact, top 5% 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

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 104 citations in OpenAlex.

  1. Coenzyme QFrontiers in cardiovascular medicine · 2022
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  11. Update in uric acid, hypertension, and cardiovascular diseases.Hypertension research : official journal of the Japanese Society of Hypertension · 2023
    Review
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  14. Xanthine Oxidoreductase Inhibitors.Handbook of experimental pharmacology · 2021
    Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

A D GavinDivision of Medicine & Therapeutics, Ninewells Hospital & Medical School, Dundee, UK.
A D Struthers
Ninewells Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo study whether the effect of allopurinol on improvement of endothelial dysfunction in chronic heart failure (CHF) translates into improved exercise capacity and to examine whether allopurinol also improves B-type natriuretic peptide (BNP), the other important prognostic marker of CHF.

designRandomised, double blind, placebo controlled crossover trial.

settingTeaching hospital. PATIENTS: 50 patients with CHF (New York Heart Association functional classes II and III) were recruited.

interventions50 patients with CHF were randomly assigned to three months' treatment with allopurinol (300 mg/day) or placebo. At two and three months into treatment, they underwent a modified Bruce exercise protocol and a six minute walk test. Blood was taken for BNP and haemoglobin analysis.

resultsNeither exercise test was altered by allopurinol. However, plasma BNP concentrations fell significantly (p = 0.035) with allopurinol (11.9 pmol/l) versus placebo (14.4 pmol/l). Haemoglobin concentrations also fell highly significantly with allopurinol (p = 0.001).

conclusionsAn important negative finding is that despite high hopes for it, allopurinol had no effect on exercise capacity in CHF. On the other hand, allopurinol did reduce BNP, which is the best available surrogate marker for prognosis in CHF.

Indexed as

AgedAllopurinolAnalysis of VarianceBiomarkersChronic DiseaseCross-Over StudiesDouble-Blind MethodEndothelium, VascularEnzyme InhibitorsExercise ToleranceFemaleHeart FailureHemoglobinsHumansMaleNatriuretic Peptide, BrainAllopurinolBiomarkersEnzyme InhibitorsHemoglobinsNatriuretic Peptide, BrainXanthine Oxidase

Identifiers

PMID15894768
PMCPMC1768933
OpenAlexW2088738068

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.