Evidence map›Paper›PMID 23381990›Full record

ArticleInfection and immunity2013

Ferric uptake regulator and its role in the pathogenesis of nontypeable Haemophilus influenzae.

Alistair Harrison, Estevan A Santana, Blake R Szelestey, David E Newsom, Peter White, Kevin M Mason

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2013. 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
5.4field-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

26 citing papers in PubMed, 45 citations in OpenAlex.

  1. Article
  2. AASM case reports · 2025
    Article
  3. Article
  4. Exploiting haem-iron dependence of nontypeableFrontiers in cellular and infection microbiology · 2025
    Review
  5. Article
  6. Hfe Permease andACS infectious diseases · 2024
    Article
  7. Gene Expression Regulation in Airway Pathogens: Importance for Otitis Media.Frontiers in cellular and infection microbiology · 2022
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Panel 3: Genetics and Precision Medicine of Otitis Media.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2017
    Review
  15. Panel 4: Report of the Microbiology Panel.Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery · 2017
    Review
  16. Article
  17. Article
  18. 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

6 authors at 2 institutions in 1 country.

Alistair HarrisonThe Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, The Center for Microbial Interface Biology, and Department of Pediatrics, The Ohio State University, Columbus, Ohio, USA. alistair.harrison@nationwidechildrens.org
Estevan A Santana
Blake R Szelestey
David E Newsom
Peter White
Kevin M Mason
Interface (United States) · USNationwide Children's Hospital · US

Funding

Disease severity of otitis media: Biofilms, invasion, and host responsesR01DC013313 · NIDCD · RESEARCH INST NATIONWIDE CHILDREN'S HOSP · PI JUSTICE, SHERYL S, MASON, KEVIN M · 2014 to 2018
$1.9M
Heme, Iron and Oxidative Stress: Regulation of Iron Homeostasis in H. InfluenzaeR01AI077897 · NIAID · RESEARCH INST NATIONWIDE CHILDREN'S HOSP · PI MUNSON, ROBERT S. · 2009 to 2013
$1.8M
Acquisition of an Illumina Genome Analyzer for The Research InstituteS10RR026942 · NCRR · RESEARCH INST NATIONWIDE CHILDREN'S HOSP · PI WHITE, PETER · 2010 to 2010
$500k
The NTHI Sap Transporter: A Mechanism of Antimicrobial Peptide ResistanceR21AI070825 · NIAID · RESEARCH INST NATIONWIDE CHILDREN'S HOSP · PI MASON, KEVIN M · 2007 to 2008
$393k
NIAID NIH HHS R01 AI077897NIAID NIH HHS R01-AI077897NIAID NIH HHS R21 AI070825NIDCD NIH HHS R01 DC013313
6 · The paper itself

Abstract

Nontypeable Haemophilus influenzae (NTHi) is a commensal microorganism of the human nasopharynx, and yet is also an opportunistic pathogen of the upper and lower respiratory tracts. Host microenvironments influence gene expression patterns, likely critical for NTHi persistence. The host sequesters iron as a mechanism to control microbial growth, and yet iron limitation influences gene expression and subsequent production of proteins involved in iron homeostasis. Careful regulation of iron uptake, via the ferric uptake regulator Fur, is essential in multiple bacteria, including NTHi. We hypothesized therefore that Fur contributes to iron homeostasis in NTHi, is critical for bacterial persistence, and likely regulates expression of virulence factors. Toward this end, fur was deleted in the prototypic NTHi clinical isolate, 86-028NP, and we assessed gene expression regulated by Fur. As expected, expression of the majority of genes that encode proteins with predicted roles in iron utilization was repressed by Fur. However, 14 Fur-regulated genes encode proteins with no known function, and yet may contribute to iron utilization or other biological functions. In a mammalian model of human otitis media, we determined that Fur was critical for bacterial persistence, indicating an important role for Fur-mediated iron homeostasis in disease progression. These data provide a profile of genes regulated by Fur in NTHi and likely identify additional regulatory pathways involved in iron utilization. Identification of such pathways will increase our understanding of how this pathogen can persist within host microenvironments, as a common commensal and, importantly, as a pathogen with significant clinical impact.

Indexed as

Gene Expression Regulation, BacterialAnimalsBacterial ProteinsChinchillaDisease Models, AnimalGene DeletionHaemophilus InfectionsHaemophilus influenzaeIronOtitis MediaRepressor ProteinsVirulence FactorsBacterial Proteinsferric uptake regulating proteins, bacterialIronRepressor ProteinsVirulence Factors

Identifiers

PMID23381990
PMCPMC3639608
OpenAlexW2047140025

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.