Evidence map›Paper›PMID 20227481›Full record

ArticleMicrobial pathogenesis2010

The Longus type IV pilus of enterotoxigenic Escherichia coli (ETEC) mediates bacterial self-aggregation and protection from antimicrobial agents.

Andrea P Clavijo, Jing Bai, Oscar G Gómez-Duarte

Abstract read
In one paragraph

Article in Microbial pathogenesis, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.7field-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

21 citing papers in PubMed, 37 citations in OpenAlex.

  1. Bile Salt Tolerance Determines Intestinal Colonization Efficacy ofInternational journal of molecular sciences · 2026
    Article
  2. Type IV pili ofEcoSal Plus · 2024
    Review
  3. Article
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  5. RecombinantPathogens (Basel, Switzerland) · 2023
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  17. Biofilm formation and binding specificities of CFA/I, CFA/II and CS2 adhesions of enterotoxigenic Escherichia coli and Cfae-R181A mutant.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2012
    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

3 authors at 1 institution in 1 country.

Andrea P ClavijoDivision of Infectious Diseases, Department of Pediatrics, University of Iowa Children's Hospital, 200 Hawkins Drive, Iowa City, IA 52242, USA.
Jing Bai
Oscar G Gómez-Duarte
University of Iowa Stead Family Children’s Hospital · US

Funding

Function of Longus Type IV pili in enterotoxigenic E coliK08AI079410 · NIAID · UNIVERSITY OF IOWA · PI GOMEZ, OSCAR G · 2008 to 2010
$382k
NIAID NIH HHS K08 AI079410PHS HHS K08KAI079410A
6 · The paper itself

Abstract

Enterotoxigenic Escherichia coli (ETEC) strains are leading causes of childhood diarrhea in developing countries. ETEC pili and non-pili adherence factors designated colonization surface antigens (CSA) are believed to be important in the pathogenesis of diarrhea. Longus, a type IV pilus identified as the CSA(21), is expressed in up to one-third of ETEC strains, and share similarities to the toxin-coregulated pilus of Vibrio cholerae, and the bundle-forming pilus of enteropathogenic E. coli. To identify longus phenotype and possible function, a site-directed mutation of the lngA major subunit gene in the E9034A wild type ETEC strain was constructed. Lack of longus expression from the lngA mutant was demonstrated by immunoblot analysis and electron microscopy using specific anti-LngA antibody. Formation of self-aggregates by ETEC was shown to be dependent on longus expression as the lngA mutant or wild type grown under poor longus expression conditions was unable to express this phenotype. Longus-expressing ETEC were also associated with improved survival when exposed to antibacterial factors including lysozyme and antibiotics. This suggests that longus-mediated bacterial self-aggregates protect bacteria against antimicrobial environmental agents and may promote gut colonization.

Indexed as

Bacterial AdhesionAmino Acid SequenceAnti-Bacterial AgentsDNA, BacterialEnterotoxigenic Escherichia coliFimbriae, BacterialMicrobial ViabilityMicroscopy, Electron, TransmissionMolecular Sequence DataMuramidaseMutagenesis, Site-DirectedMutationProtein Structure, SecondaryProtein Structure, TertiaryAnti-Bacterial AgentsDNA, BacterialMuramidase

Identifiers

PMID20227481
PMCPMC2860038
OpenAlexW2017782553

What OpenQuestion holds

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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.