Evidence map›Paper›PMID 18083816›Full record

ArticleJournal of bacteriology2008

In vivo growth of Pseudomonas aeruginosa strains PAO1 and PA14 and the hypervirulent strain LESB58 in a rat model of chronic lung infection.

Irena Kukavica-Ibrulj, Alessandra Bragonzi, Moira Paroni, Craig Winstanley, François Sanschagrin, George A O'Toole, Roger C Levesque

Abstract readComparative Study
In one paragraph

Article in Journal of bacteriology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.

0numbers the graph read from it
0cells of the map it votes in
57citing 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

57 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Evaluating the In Vivo Virulence of EnvironmentalAntibiotics (Basel, Switzerland) · 2023
    Article
  6. Review
  7. Biologically Relevant Murine Models of ChronicPathogens (Basel, Switzerland) · 2023
    Article
  8. To bead or not to bead: A review ofFrontiers in physiology · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review
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.

Irena Kukavica-IbruljCentre de Recherche sur la Fonction, Structure et Ingénierie des Protéines, Pavillon Charles-Eugène Marchand, Biologie Médicale, Faculté de Médecine, Université Laval, Laval, Québec G1K 7P4, Canada.
Alessandra Bragonzi
Moira Paroni
Craig Winstanley
François Sanschagrin
George A O'Toole
Roger C Levesque

Funding

Role of Virulence Factors in Pseudomonas-Host InteractionsR01HL074175 · NHLBI · DARTMOUTH COLLEGE · PI STANTON, BRUCE A. · 2003 to 2018
$5.0M
NHLBI NIH HHS HL074175NHLBI NIH HHS R01 HL074175
6 · The paper itself

Abstract

Pseudomonas aeruginosa chronic lung infections are the major cause of morbidity and mortality in cystic fibrosis (CF) patients. The P. aeruginosa strains PAO1 and PA14 were compared with the Liverpool epidemic strain LESB58 to assess in vivo growth, infection kinetics, and bacterial persistence and localization within tissues in a rat model of chronic lung infection. The three P. aeruginosa strains demonstrated similar growth curves in vivo but differences in tissue distribution. The LESB58 strain persisted in the bronchial lumen, while the PAO1 and PA14 strains were found localized in the alveolar regions and grew as macrocolonies after day 7 postinfection. Bacterial strains were compared for swimming and twitching motility and for the production of biofilm. The P. aeruginosa LESB58 strain produced more biofilm than PAO1 and PA14. Competitive index (CI) analysis of PAO1, PA14, and LESB58 in vivo indicated CI values of 0.002, 0.0002, and 0.14 between PAO1-PA14, PAO1-LESB58, and LESB58-PA14, respectively. CI analysis comparing the in vivo growth of the PAO1 DeltaPA5441 mutant and four PA14 surface attachment-defective (sad) mutants gave CI values 10 to 1,000 times lower in competitions with their respective wild-type strains PAO1 and PA14. P. aeruginosa strains studied in the rat model of chronic lung infection demonstrated similar in vivo growth but differences in virulence as shown with a competitive in vivo assay. These differences were further confirmed with biofilm and motility in vitro assays, where strain LESB58 produced more biofilm but had less capacity for motility than PAO1 and PA14.

Indexed as

AnimalsBiofilmsBronchiBronchopneumoniaGene DeletionLocomotionMutagenesis, InsertionalPseudomonas aeruginosaPulmonary AlveoliRatsRats, Sprague-DawleyVirulenceVirulence FactorsVirulence Factors

Identifiers

PMID18083816
PMCPMC2293253

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.