Evidence map›Paper›PMID 30205817›Full record

ReviewJournal of biomedical science2018

The impacts of H. pylori virulence factors on the development of gastroduodenal diseases.

Wei-Lun Chang, Yi-Chun Yeh, Bor-Shyang Sheu

Open access · diamondAbstract readReview
In one paragraph

Review in Journal of biomedical science, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed, 2 pooled it
18.7field-weighted citation impact, top 1% 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

105 citing papers in PubMed, 2 syntheses or guidelines pooled it, 236 citations in OpenAlex.

  1. Pooled it
  2. BMJ open gastroenterology · 2020
    Pooled it
  3. Trial
  4. Review
  5. Review
  6. Article
  7. Journal of medical microbiology · 2025
    Article
  8. Article
  9. Microorganisms · 2025
    Article
  10. Review
  11. Review
  12. Helicobacter pylori Infection in Colombia: Phylogeny, Resistome, and Virulome.APMIS : acta pathologica, microbiologica, et immunologica Scandinavica · 2025
    Article
  13. MicroRNA-Mediated Regulatory Networks inBiochemistry research international · 2025
    Review
  14. Review
  15. The role ofHeliyon · 2024
    Article
  16. Review
  17. Article
  18. Pathogens (Basel, Switzerland) · 2024
    Review
  19. Evaluation of urea breath test as a diagnostic tool forWorld journal of gastroenterology · 2024
    Article
  20. Relationship betweenWorld journal of gastrointestinal surgery · 2024
    Article

45 more citing papers are in PubMed but not listed here.

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 1 institution in 1 country.

Wei-Lun ChangDepartment of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng Li Road, Tainan, Taiwan.
Yi-Chun YehDepartment of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng Li Road, Tainan, Taiwan.
Bor-Shyang SheuDepartment of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, 138 Sheng Li Road, Tainan, Taiwan. sheubs@mail.ncku.edu.tw.
National Cheng Kung University Hospital · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although most H. pylori infectors are asymptomatic, some may develop serious disease, such as gastric adenocarcinoma, gastric high-grade B cell lymphoma and peptic ulcer disease. Epidemiological and basic studies have provided evidence that infection with H. pylori carrying specific virulence factors can lead to more severe outcome. The virulence factors that are associated with gastric adenocarcinoma development include the presence, expression intensity and types of cytotoxin-associated gene A (CagA, especially EPIYA-D type and multiple copies of EPIYA-C) and type IV secretion system (CagL polymorphism) responsible for its translocation into the host cells, the genotypes of vacuolating cytotoxin A (vacA, s1/i1/m1 type), and expression intensity of blood group antigen binding adhesin (BabA, low-producer or chimeric with BabB). The presence of CagA is also related to gastric high-grade B cell lymphoma occurrence. Peptic ulcer disease is closely associated with cagA-genopositive, vacA s1/m1 genotype, babA2-genopositive (encodes BabA protein), presence of duodenal ulcer promoting gene cluster (dupA cluster) and induced by contact with epithelium gene A1 (iceA1), and expression status of outer inflammatory protein (OipA). The prevalence of these virulence factors is diverse among H. pylori isolated from different geographic areas and ethnic groups, which may explain the differences in disease incidences. For example, in East Asia where gastric cancer incidence is highest worldwide, almost all H. pylori isolates were cagA genopositive, vacA s1/i1/m1 and BabA-expressing. Therefore, selection of appropriate virulence markers and testing methods are important when using them to determine risk of diseases. This review summarizes the evidences of H. pylori virulence factors in relation with gastroduodenal diseases and discusses the geographic differences and appropriate methods of analyzing these virulence markers.

Indexed as

Gastrointestinal DiseasesHelicobacter InfectionsHelicobacter pyloriVirulence FactorsVirulence FactorsGastric adenocarcinomaGastric B cell lymphomaHelicobacter pyloriPeptic ulcer diseaseVirulence factors

Identifiers

PMID30205817
PMCPMC6131906
OpenAlexW2890918697

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.