Evidence map›Paper›PMID 32795257›Full record

SynthesisBMC gastroenterology2020

Association of Helicobacter pylori vacA genotypes and peptic ulcer in Iranian population: a systematic review and meta-analysis.

Masoud Keikha, Mohammad Ali-Hassanzadeh, Mohsen Karbalaei

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMC gastroenterology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 3 pooled it
6.5field-weighted citation impact, top 2% 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

17 citing papers in PubMed, 3 syntheses or guidelines pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. A Comprehensive Survey of the Relationship betweenArchives of Iranian medicine · 2022
    Pooled it
  3. Pooled it
  4. The influence ofComputational and structural biotechnology journal · 2024
    Review
  5. Trends in upper gastrointestinal bleeding management.World journal of clinical cases · 2024
    Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. TheFrontiers in microbiology · 2023
    Article
  13. Article
  14. Review
  15. EPIYA motifs ofNew microbes and new infections · 2021
    Article
  16. Cells · 2020
    Review
  17. 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

3 authors at 2 institutions in 1 country.

Masoud KeikhaAntimicrobial Resistance Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Mohammad Ali-HassanzadehDepartment of Immunology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran.
Mohsen KarbalaeiDepartment of Microbiology and Virology, School of Medicine, Jiroft University of Medical Sciences, Jiroft, Iran. mohsen.karbalaei@jmu.ac.ir.ORCID http://orcid.org/0000-0001-9899-2885
University of Jiroft · IRMashhad University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHelicobacter pylori is accounted as the most etiologic agent for digestive disorders, in particular, the most important of them i.e. peptic ulcer and gastric cancer. In the recent years, association of vacA genotypes and gastrointestinal disorders has attracted a lot of attention. In present study, we assessed the correlation between vacA genotypes (s1, s2, m1, m2, s1m1, s1m2, s2m1 and s2m2) and development to peptic ulcer in Iranian population.

methodsIn our study, first, 24 original articles containing of information of 3328 patients were evaluated. Statistical analysis was done by Comprehensive Meta-Analysis version 2.0 software (Biostat, Englewood, NJ, USA). In this regards, we used from fixed-effects model for analysis of data with low heterogeneity, while for analysis of data with high heterogeneity (I

resultsAbundance of each of s1, s2, m1, m2, s1m1, s1m2, s2m1, and s2m2 was estimated 36.24, 28.32, 42.90 29.86, 27.88, 32.34, 15.70, and 25.94%, respectively. According to the results, the m1, s1, and s1m2 genotypes were among the most prevalent genotypes among the Iranian patients, whereas, s2m1 genotype had the lowest frequency.

conclusionsOverall, 24 articles (total participants = 3328) were included in this comprehensive analysis. H. pylori infection rate were 90.26% in these cases, so that 33.65% of whom had peptic ulcer. Moreover, the abundance of each vacA genotypes including s1, s2, m1, m2, s1m1, s1m2, s2m1, and s2m2 was estimated as 36.24, 28.32, 42.90 29.86, 27.88, 32.34, 15.70, and 25.94% respectively. We demonstrated that there is a significant relationship between infection of stomach with m1, s1m1, and s2m1 genotypes and development to peptic ulcer disease.

Indexed as

Helicobacter InfectionsHelicobacter pyloriPeptic UlcerAntigens, BacterialBacterial ProteinsGenotypeHumansIranAntigens, BacterialBacterial ProteinsHelicobacter pyloriIranPeptic ulcer diseasevacA genotypes

Identifiers

PMID32795257
PMCPMC7427722
OpenAlexW3049573865

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Registered trials

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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.