Evidence map›Paper›PMID 22248188›Full record

ArticleBMC microbiology2012

Interleukin-8 is the single most up-regulated gene in whole genome profiling of H. pylori exposed gastric epithelial cells.

Lars L Eftang, Ying Esbensen, Tone M Tannæs, Ida R K Bukholm, Geir Bukholm

Open access · goldAbstract read
In one paragraph

Article in BMC microbiology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 1 pooled it
7.1field-weighted citation impact, top 3% 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

44 citing papers in PubMed, 1 synthesis or guideline pooled it, 85 citations in OpenAlex.

  1. Overlapping cytokines inFrontiers in immunology · 2023
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  2. Review
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  5. Application of an organoid-based model to exploreFrontiers in cellular and infection microbiology · 2025
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  7. Frontiers in cellular and infection microbiology · 2024
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  9. Anti-Food science & nutrition · 2023
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  12. Dynamics of Oxidative Stress inDiagnostics (Basel, Switzerland) · 2022
    Article
  13. Article
  14. Nutrients · 2021
    Article
  15. Evidence-based complementary and alternative medicine : eCAM · 2021
    Article
  16. Article
  17. Article
  18. MAP Kinases Pathways in Gastric Cancer.International journal of molecular sciences · 2020
    Review
  19. Cells · 2020
    Article
  20. Upregulation of theGenes & diseases · 2019
    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

5 authors at 2 institutions in 1 country.

Lars L EftangDepartment of Clinical Molecular Biology (Epigen), Institute of Clinical Medicine, University of Oslo, Akershus University Hospital, Lørenskog, Norway. lars.eftang@medisin.uio.no
Ying Esbensen
Tone M Tannæs
Ida R K Bukholm
Geir Bukholm
Akershus University Hospital · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe association between Helicobacter pylori infection and upper gastrointestinal disease is well established. However, only a small fraction of H. pylori carriers develop disease, and there are great geographical differences in disease penetrance. The explanation to this enigma lies in the interaction between the bacterium and the host. H. pylori Outer Membrane Phospholipase A (OMPLA) has been suggested to play a role in the virulence of this bacterium. The aim of this study was to profile the most significant cellular pathways and biological processes affected in gastric epithelial cells during 24 h of H. pylori exposure, and to study the inflammatory response to OMPLA⁺ and OMPLA⁻ H. pylori variants.

resultsInterleukin-8 was the most significantly up-regulated gene and appears to play a paramount role in the epithelial cell response to H. pylori infection and in the pathological processes leading to gastric disease. MAPK and NF-kappaB cellular pathways were powerfully activated, but did not seem to explain the impressive IL-8 response. There was marked up-regulation of TP53BP2, whose corresponding protein ASPP2 may interact with H. pylori CagA and cause marked p53 suppression of apoptosis. Other regulators of apoptosis also showed abberant regulation. We also identified up-regulation of several oncogenes and down-regulation of tumor suppressor genes as early as during the first 24 h of infection. H. pylori OMPLA phase variation did not seem to influence the inflammatory epithelial cell gene response in this experiment.

conclusionIn whole genome analysis of the epithelial response to H. pylori exposure, IL-8 demonstrated the most marked up-regulation, and was involved in many of the most important cellular response processes to the infection. There was dysregulation of apoptosis, tumor suppressor genes and oncogenes as early as in the first 24 h of H. pylori infection, which may represent early signs of gastric tumorigenesis. OMPLA⁺/⁻ did not affect the acute inflammatory response to H. pylori.

Indexed as

Gene Expression ProfilingHost-Pathogen InteractionsBacterial Outer Membrane ProteinsCells, CulturedEpithelial CellsHelicobacter pyloriHumansInterleukin-8Microarray AnalysisPhospholipases A1Virulence FactorsBacterial Outer Membrane ProteinsInterleukin-8outer membrane phospholipase APhospholipases A1Virulence Factors

Identifiers

PMID22248188
PMCPMC3292955
OpenAlexW2102488396

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.