Evidence map›Paper›PMID 23052953›Full record

ArticleIntensive care medicine2012

Pathophysiology of Escherichia coli ventilator-associated pneumonia: implication of highly virulent extraintestinal pathogenic strains.

Jonathan Messika, Fatma Magdoud, Olivier Clermont, Dimitri Margetis, Stéphane Gaudry, Damien Roux, Catherine Branger, Didier Dreyfuss, Erick Denamur, Jean-Damien Ricard

Registry-linked trialOpen access · bronzeAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Intensive care medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03303937 (Characteristics of Lower Respiratory Tract Escherichia Coli Isolates Colonizing and Infecting Mechanically Ventilated Intensive Care Patients), which is not on this map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
1.0field-weighted citation impact, top 29% 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.

NCT03303937 completednot on this map

Characteristics of Lower Respiratory Tract Escherichia Coli Isolates Colonizing and Infecting Mechanically Ventilated Intensive Care Patients: a French Multicenter Prospective Collection

TypeobservationalSponsorHôpital Louis MourierRan2012 to 2016Enrolled289ConditionsNosocomial Pneumonia, Ventilator Associated Pneumonia, Escherichia Coli Infections, Escherichia Coli Pneumonia
3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 35 citations in OpenAlex.

  1. Molecular determinants ofFrontiers in cellular and infection microbiology · 2026
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  2. ChronicInternational journal of molecular sciences · 2025
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  8. Characterization of unconventional pathogenic Escherichia coli isolated from bloodstream infection: virulence beyond the opportunism.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2023
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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

10 authors at 5 institutions in 1 country.

Jonathan MessikaInstitut National de la Santé et de la Recherche Médicale, Paris, France.
Fatma Magdoud
Olivier Clermont
Dimitri Margetis
Stéphane Gaudry
Damien Roux
Catherine Branger
Didier Dreyfuss
Erick Denamur
Jean-Damien Ricard
Assistance Publique – Hôpitaux de Paris · FRDélégation Paris 7 · FRSorbonne Paris Cité · FRHôpital Louis-Mourier · FRInserm · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo characterize Escherichia coli ventilator-associated pneumonia (VAP) in intensive care unit (ICU) patients by determining antibioresistance and genotypic characteristics of E. coli isolates responsible for VAP or lung colonization, by comparing them with their oropharyngeal and rectal counterparts and by assessing representative isolates' virulence in a pneumonia mouse model.

methodsPatients under mechanical ventilation for more than 72 h were screened for simultaneous presence of E. coli in rectal, oropharyngeal, and respiratory samples (colonization or VAP). If present, E. coli isolates were characterized by antimicrobial susceptibility, phylogenetic grouping, and virulence factor (VF) gene content determination. BALB/c mice were challenged intranasally with 3.6 × 10(8) colony-forming units (CFU) of patients' E. coli isolates.

resultsMultisite E. coli colonization was observed in 19 % of patients (25 patients, 12 with E. coli VAP). One hundred fifteen distinct E. coli isolates were analyzed. B2 phylogenetic group was predominant, with high VF gene content and low antimicrobial resistance. Antimicrobial resistance diversity was observed in four patients with VAP. E. coli isolates from VAP patients were more frequently B2 isolates, with significantly greater VF gene content than lung colonization isolates. Among screened VF genes, iroN and sfa appeared important for lung infection. A very strong correlation (R (2) = 0.99) was found between VF gene content and mortality in the mouse model.

conclusionsThis is the first study establishing antibioresistance and genotypic characteristics of E. coli isolates responsible for VAP in adult ICU patients. These isolates are highly virulent specific extraintestinal pathogenic E. coli strains expressing virulence factors, representing potential targets for new therapies.

Indexed as

AdultAgedAnimalsCarrier StateDrug Resistance, BacterialEscherichia coliEscherichia coli InfectionsFemaleFranceHumansMaleMiceMice, Inbred BALB CMiddle AgedMolecular TypingPneumonia, Ventilator-AssociatedVirulence Factors

Identifiers

PMID23052953
OpenAlexW2029312621

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Registered trials

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.