Evidence map›Paper›PMID 22879937›Full record

ArticlePloS one2012

Comparative transcriptomics of H. pylori strains AM5, SS1 and their hpyAVIBM deletion mutants: possible roles of cytosine methylation.

Ritesh Kumar, Asish K Mukhopadhyay, Prachetash Ghosh, Desirazu N Rao

Abstract readComparative Study
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–field-weighted citation impact
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

26 citing papers in PubMed.

  1. Article
  2. Review
  3. ThemBio · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. DNA Methylation in Prokaryotes.Advances in experimental medicine and biology · 2022
    Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Inhibition ofFrontiers in pharmacology · 2018
    Article
  17. Article
  18. BASI74, a Virulence-Related sRNA inFrontiers in microbiology · 2018
    Article
  19. Article
  20. 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

4 authors.

Ritesh KumarDepartment of Biochemistry, Indian Institute of Science, Bangalore, India.
Asish K Mukhopadhyay
Prachetash Ghosh
Desirazu N Rao

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Helicobacter pylori is an important human pathogen and one of the most successful chronic colonizers of the human body. H. pylori uses diverse mechanisms to modulate its interaction with the host in order to promote chronic infection and overcome host immune response. Restriction-modification genes are a major part of strain-specific genes present in H. pylori. The role of N(6)--adenine methylation in bacterial gene regulation and virulence is well established but not much is known about the effect of C(5) -cytosine methylation on gene expression in prokaryotes. In this study, it was observed by microarray analysis and RT-PCR, that deletion of an orphan C(5) -cytosine methyltransferase, hpyAVIBM in H. pylori strains AM5and SS1 has a significant effect on the expression of number of genes belonging to motility, adhesion and virulence. AM5ΔhpyAVIBM mutant strain has a different LPS profile and is able to induce high IL-8 production compared to wild-type. hpyAVIBM from strain 26695 is able to complement mutant SS1 and AM5 strains. This study highlights a possible significance of cytosine methylation in the physiology of H. pylori.

Indexed as

Gene DeletionGene Expression ProfilingBacterial Outer Membrane ProteinsBase SequenceBlotting, WesternCell LineCytosineDinucleotide RepeatsDNA (Cytosine-5-)-MethyltransferasesDNA MethylationGene Expression Regulation, BacterialGene Knockout TechniquesGenes, BacterialHelicobacter pyloriHost-Pathogen InteractionsHumansBacterial Outer Membrane ProteinsCytosineDNA (Cytosine-5-)-MethyltransferasesInterleukin-8Lipopolysaccharides

Identifiers

PMID22879937
PMCPMC3411764

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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.