Evidence map›Paper›PMID 22665376›Full record

ArticleInfection and immunity2012

Decreased expression of type 1 fimbriae by a pst mutant of uropathogenic Escherichia coli reduces urinary tract infection.

Sébastien Crépin, Sébastien Houle, Marie-Ève Charbonneau, Michaël Mourez, Josée Harel, Charles M Dozois

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
2.4field-weighted citation impact, top 12% 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

43 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
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  13. Persistence phenotype of adherent-invasiveMicrobial cell (Graz, Austria) · 2025
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  15. Biofilm Formation byMicroorganisms · 2023
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. d-Mannose Treatment neither Affects UropathogenicMolecules (Basel, Switzerland) · 2020
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 1 country.

Sébastien CrépinINRS-Institut Armand-Frappier, Laval, Québec, Canada.
Sébastien Houle
Marie-Ève Charbonneau
Michaël Mourez
Josée Harel
Charles M Dozois
Université de Montréal · CAArmand Frappier Museum · CAInstitut National de la Recherche Scientifique · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The pstSCAB-phoU operon encodes the phosphate-specific transport system (Pst). Loss of Pst constitutively activates the Pho regulon and decreases bacterial virulence. However, specific mechanisms underlying decreased bacterial virulence through inactivation of Pst are poorly understood. In uropathogenic Escherichia coli (UPEC) strain CFT073, inactivation of pst decreased urinary tract colonization in CBA/J mice. The pst mutant was deficient in production of type 1 fimbriae and showed decreased expression of the fimA structural gene which correlated with differential expression of the fimB, fimE, ipuA, and ipbA genes, encoding recombinases, mediating inversion of the fim promoter. The role of fim downregulation in attenuation of the pst mutant was confirmed using a fim phase-locked-on derivative, which demonstrated a significant gain in virulence. In addition, the pst mutant was less able to invade human bladder epithelial cells. Since type 1 fimbriae contribute to UPEC virulence by promoting colonization and invasion of bladder cells, the reduced bladder colonization by the pst mutant is predominantly attributed to downregulation of these fimbriae. Elucidation of mechanisms mediating the control of type 1 fimbriae through activation of the Pho regulon in UPEC may open new avenues for therapeutics or prophylactics against urinary tract infections.

Indexed as

AnimalsBacterial AdhesionCell LineEscherichia coli InfectionsEscherichia coli ProteinsFimbriae ProteinsGene Expression Regulation, BacterialGuanosine TetraphosphateHumansMiceMice, Inbred CBAMutationUrinary BladderUrinary Tract InfectionsUropathogenic Escherichia coliEscherichia coli ProteinsFimbriae ProteinsGuanosine Tetraphosphate

Identifiers

PMID22665376
PMCPMC3434566
OpenAlexW2141396945

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.