Evidence map›Paper›PMID 12067941›Full record

Trial reportHeart (British Cardiac Society)2002

Prospective analysis of the association of infection with CagA bearing strains of Helicobacter pylori and coronary heart disease.

R K Singh, A D McMahon, H Patel, C J Packard, B J Rathbone, N J Samani

Open access · bronzeAbstract readClinical TrialRandomized Controlled Trial
In one paragraph

Trial report in Heart (British Cardiac Society), 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 4% 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, 1 synthesis or guideline pooled it, 71 citations in OpenAlex.

  1. An Updated Meta-Analysis of the Relationship BetweenFrontiers in cardiovascular medicine · 2022
    Pooled it
  2. Trial
  3. International journal of molecular sciences · 2025
    Review
  4. Article
  5. International journal of molecular sciences · 2022
    Article
  6. Bone Fragility in Gastrointestinal Disorders.International journal of molecular sciences · 2022
    Review
  7. Therapeutics and clinical risk management · 2017
    Article
  8. Clinical significance of Helicobacter pylori infection in patients with acute coronary syndromes: an overview of current evidence.Clinical research in cardiology : official journal of the German Cardiac Society · 2014
    Review
  9. Article
  10. Increased levels of Helicobacter pylori IgG antibodies in aqueous humor of patients with primary open-angle and exfoliation glaucoma.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2003
    Article
  11. Treatment and management of Helicobacter pylori infection.Current gastroenterology reports · 2002
    Review
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

6 authors at 4 institutions in 1 country.

R K SinghDivision of Cardiology, Department of Medicine, University of Leicester, Leicester, UK.
A D McMahon
H Patel
C J Packard
B J Rathbone
N J Samani
University of Leicester · GBGlasgow Royal Infirmary · GBGlenfield Hospital · GBLeicester Royal Infirmary · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo see whether it was possible to replicate in a prospective study the association recently reported between infection with the more virulent (type 1) cytotoxin associated gene A (CagA) antigen carrying strains of Helicobacter pylori and increased risk of coronary heart disease. DESIGN AND

settingNested case-control study in a clinical outcomes trial. SUBJECTS: Participants in the West of Scotland coronary prevention study.

methodsH pylori CagA serological status was determined in plasma samples of 201 subjects (cases) who subsequently had a coronary event during follow up and in 414 subjects (controls) matched for age and smoking who remained event-free, using a semiquantitative commercial enzyme linked immunosorbent assay (ELISA) kit against the p120 antigen of CagA.

results105 (52%) in the case group and 176 (43%) in the control group were seropositive (odds ratio (OR) 1.49, 95% confidence interval (CI) 1.06 to 2.10, p = 0.022). The association remained significant after adjustment for blood pressure, body mass index, plasma concentrations of low density lipoprotein and high density lipoprotein cholesterol, history of hypertension and diabetes, statin treatment, and socioeconomic status (OR 1.51, 95% CI 1.06 to 2.16, p = 0.023). Baseline inflammatory markers (white cell count, C reactive protein, fibrinogen) were not significantly increased in either H pylori CagA positive cases or controls.

conclusionsThe findings provide support from a prospective study for the hypothesis that there is an association between infection with CagA bearing strains of H pylori and coronary heart disease. The mechanism(s) underlying the association remain to be elucidated.

Indexed as

Antigens, BacterialBacterial ProteinsCase-Control StudiesCoronary DiseaseEnzyme-Linked Immunosorbent AssayHelicobacter InfectionsHelicobacter pyloriHumansMaleMiddle AgedProspective StudiesRisk FactorsAntigens, BacterialBacterial ProteinscagA protein, Helicobacter pylori

Identifiers

PMID12067941
PMCPMC1767175
OpenAlexW2156788208

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.