Evidence map›Paper›PMID 16369017›Full record

ArticleInfection and immunity2006

Iron and pH homeostasis intersect at the level of Fur regulation in the gastric pathogen Helicobacter pylori.

Hanan Gancz, Stefano Censini, D Scott Merrell

Open access · greenAbstract readValidation Study
In one paragraph

Article in Infection and immunity, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
5.6field-weighted citation impact, top 4% 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

71 citing papers in PubMed, 128 citations in OpenAlex.

  1. ThemBio · 2025
    Article
  2. Article
  3. Review
  4. A Positively SelectedInfection and immunity · 2023
    Article
  5. Insights into the Orchestration of Gene Transcription Regulators inInternational journal of molecular sciences · 2022
    Review
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. ArsRS-Dependent Regulation ofFrontiers in microbiology · 2018
    Article
  15. Review
  16. Article
  17. Ironing Out the Unconventional Mechanisms of Iron Acquisition and Gene Regulation inFrontiers in cellular and infection microbiology · 2017
    Review
  18. Article
  19. Article
  20. Article

11 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.

Hanan GanczDepartment of Microbiology and Immunology, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Road, Bethesda, MD 20814, USA.
Stefano Censini
D Scott Merrell
Uniformed Services University of the Health Sciences · US

Funding

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 CA 92229NCI NIH HHS R01 CA092229NIAID NIH HHS AI 38459NIAID NIH HHS R01 AI038459
6 · The paper itself

Abstract

Helicobacter pylori persistently colonizes the stomach of the majority of the world's population and is a tremendous medical burden due to its causal role in diverse gastric maladies. Since the stomach is a constantly changing environment, successful colonization of H. pylori within this niche requires regulation of bacterial gene expression to cope with the environmental fluctuations. In H. pylori, the ferric uptake regulator (Fur) has been shown to play an intricate role in adaptation of the bacterium to two conditions known to oscillate within the gastric mucosa: iron limitation and low pH. To extend our knowledge of the process of regulation and adaptation in H. pylori, we show that Fur is required for efficient colonization of the Mongolian gerbil: the mutant strain exhibits a 100-fold increase in the 50% infectious dose, as well as a 100-fold defect in competitive colonization, when coinfected with wild-type bacteria. Furthermore, we used DNA microarrays to identify genes whose expression was altered in a Fur-deficient strain. We show that the Fur regulon of H. pylori consists of approximately 30 genes, most of which have been previously annotated as acid stress associated. Finally, we investigate the role of Fur in acid-responsive modulation of gene expression and show that a large number of genes are aberrantly expressed in the Fur mutant specifically upon acid exposure. This fact likely explains the requirement for this regulator for growth and colonization in the stomach.

Indexed as

AnimalsBacterial ProteinsBinding SitesDisease Models, AnimalGastric MucosaGene Expression ProfilingGene Expression Regulation, BacterialGerbillinaeHelicobacter InfectionsHelicobacter pyloriHomeostasisHydrogen-Ion ConcentrationIronOligonucleotide Array Sequence AnalysisPromoter Regions, GeneticRepressor ProteinsBacterial Proteinsferric uptake regulating proteins, bacterialIronRepressor Proteins

Identifiers

PMID16369017
PMCPMC1346641
OpenAlexW2127818778

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.