Evidence map›Paper›PMID 22731867›Full record

ArticleBMC research notes2012

A functional tonB gene is required for both virulence and competitive fitness in a chinchilla model of Haemophilus influenzae otitis media.

Daniel J Morton, Randy J Hempel, Thomas W Seale, Paul W Whitby, Terrence L Stull

Abstract read
In one paragraph

Article in BMC research notes, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Review
  2. Comparative Genomic Analysis of the Human PathogenFrontiers in cellular and infection microbiology · 2022
    Article
  3. Review
  4. Surface Motion of Tympanic Membrane in a Chinchilla Model of Acute Otitis Media.Journal of the Association for Research in Otolaryngology : JARO · 2018
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
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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.

Daniel J MortonDepartment of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, 73104, USA. dmorton@ouhsc.edu
Randy J Hempel
Thomas W Seale
Paul W Whitby
Terrence L Stull

Funding

MOLECULAR ANALYSIS OF H INFLUENZAE HEMOGLOBIN BINDINGR01AI029611 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI STULL, TERRENCE L · 1991 to 2012
$3.3M
Haemophilus influenzae iron/heme regulonR56AI029611 · NIAID · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI STULL, TERRENCE L · 2007 to 2007
$330k
NIAID NIH HHS AI29611
6 · The paper itself

Abstract

backgroundHaemophilus influenzae requires heme for aerobic growth and possesses multiple mechanisms to obtain this essential nutrient.

methodsAn insertional mutation in tonB was constructed and the impact of the mutation on virulence and fitness in a chinchilla model of otitis media was determined. The tonB insertion mutant strain was significantly impacted in both virulence and fitness as compared to the wildtype strain in this model.

conclusionsThe tonB gene of H. influenzae is required for the establishment and maintenance of middle ear infection in this chinchilla model of bacterial disease.

Indexed as

Genetic FitnessAnimalsBacterial ProteinsChinchillaDisease Models, AnimalGenes, BacterialHaemophilus InfectionsHaemophilus influenzaeHemeMembrane ProteinsMutationOtitis MediaOtitis Media with EffusionVirulenceBacterial ProteinsHemeMembrane ProteinstonB protein, Haemophilus influenzae

Identifiers

PMID22731867
PMCPMC3425130

What OpenQuestion holds

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LicenceCC BY
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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.