Evidence map›Paper›PMID 14573673›Full record

ArticleInfection and immunity2003

Growth phase-dependent response of Helicobacter pylori to iron starvation.

D Scott Merrell, Lucinda J Thompson, Charles C Kim, Hazel Mitchell, Lucy S Tompkins, Adrian Lee, Stanley Falkow

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
9.8field-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

78 citing papers in PubMed, 148 citations in OpenAlex.

  1. A novelVirulence · 2025
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  6. EradicatingGut · 2023
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  7. MAT Gain of Activity Mutation inACS infectious diseases · 2023
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  9. Insights into the Orchestration of Gene Transcription Regulators inInternational journal of molecular sciences · 2022
    Review
  10. Overview ofDiseases (Basel, Switzerland) · 2021
    Review
  11. Article
  12. The role of solute binding proteins in signal transduction.Computational and structural biotechnology journal · 2021
    Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Article
  20. ArsRS-Dependent Regulation ofFrontiers in microbiology · 2018
    Article

18 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

7 authors at 2 institutions in 2 countries.

D Scott MerrellDepartment of Microbiology and Immunology, Stanford University School of Medicine, Stanford, California 94305, USA. dmerrell@stanford.edu
Lucinda J Thompson
Charles C Kim
Hazel Mitchell
Lucy S Tompkins
Adrian Lee
Stanley Falkow
Stanford University · USUNSW Sydney · AU

Funding

Proteomics/GenomicsP30DK056339 · NIDDK · STANFORD UNIVERSITY · PI GREENBERG, HARRY BERNARD · 2001 to 2010
$10.4M
EMERGING INFECTIOUS DISEASEST32AI007502 · NIAID · STANFORD UNIVERSITY · PI Prasanna Jagannathan, DAVID A. RELMAN · 1995 to 2026
$6.8M
GENETICS AND CELLULAR BASIS OF H PYLORI PATHOGENESISR01AI038459 · NIAID · STANFORD UNIVERSITY · PI TOMPKINS, LUCY STUART · 1996 to 2010
$4.0M
Helicobacter Host Interactions in Animal ModelsR01CA092229 · NCI · STANFORD UNIVERSITY · PI AMIEVA, MANUEL R · 2001 to 2009
$2.6M
NCI NIH HHS CA92229NCI NIH HHS R01 CA092229NIAID NIH HHS AI07502-06NIAID NIH HHS AI38459NIAID NIH HHS R01 AI038459NIAID NIH HHS T32 AI007502NIDDK NIH HHS DK56339NIDDK NIH HHS P30 DK056339
6 · The paper itself

Abstract

Iron is an essential nutrient that is often found in extremely limited available quantities within eukaryotic hosts. Because of this, many pathogenic bacteria have developed regulated networks of genes important for iron uptake and storage. In addition, it has been shown that many bacteria use available iron concentrations as a signal to regulate virulence gene expression. We have utilized DNA microarray technology to identify genes of the human pathogen Helicobacter pylori that are differentially regulated on a growth-inhibiting shift to iron starvation conditions. In addition, the growth phase-dependent expression of these genes was investigated by examining both exponential and stationary growth phase cultures. We identified known iron-regulated genes, as well as a number of genes whose regulation by iron concentration was not previously appreciated. Included in the list of regulated factors were the known virulence genes cagA, vacA, and napA. We examined the effect of iron starvation on the motility of H. pylori and found that exponential- and stationary-phase cultures responded differently to the stress. We further found that while growing cells are rapidly killed by iron starvation, stationary-phase cells show a remarkable ability to survive iron depletion. Finally, bioinformatic analysis of the predicted promoter regions of the differentially regulated genes led to identification of several putative Fur boxes, suggesting a direct role for Fur in iron-dependent regulation of these genes.

Indexed as

Gene Expression Regulation, BacterialBase SequenceBiological TransportComputational BiologyFlagellinHelicobacter pyloriIronMolecular Sequence DataNitrogenOligonucleotide Array Sequence AnalysisProtein BiosynthesisVirulence FactorsflaA protein, bacteriaflaB flagellinFlagellinIronNitrogenVirulence Factors

Identifiers

PMID14573673
PMCPMC219544
OpenAlexW2139704756

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.