Evidence map›Paper›PMID 20348256›Full record

ArticleJournal of bacteriology2010

Longus, a type IV pilus of enterotoxigenic Escherichia coli, is involved in adherence to intestinal epithelial cells.

Karina Mazariego-Espinosa, Ariadnna Cruz, Maria A Ledesma, Sara A Ochoa, Juan Xicohtencatl-Cortes

Abstract read
In one paragraph

Article in Journal of bacteriology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
4.2field-weighted citation impact, top 7% 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

34 citing papers in PubMed, 55 citations in OpenAlex.

  1. Type IV pilin regulation: a transcriptional overview.Critical reviews in microbiology · 2026
    Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Type IV pili ofEcoSal Plus · 2024
    Review
  8. Article
  9. RecombinantPathogens (Basel, Switzerland) · 2023
    Article
  10. Article
  11. Article
  12. Motor-independent retraction of type IV pili is governed by an inherent property of the pilus filament.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. The Fimbrial GeneFrontiers in microbiology · 2018
    Article
  19. Article
  20. Article
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 at 1 institution in 1 country.

Karina Mazariego-EspinosaLaboratorio de Bacteriología Intestinal, Departamento de Infectología, Hospital Infantil de México Federico Gómez, Dr. Márquez 162, Col. Doctores, Delegación Cuauhtémoc, 06720 México D.F., México.
Ariadnna Cruz
Maria A Ledesma
Sara A Ochoa
Juan Xicohtencatl-Cortes
Hospital Infantil de México Federico Gómez · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Enterotoxigenic Escherichia coli (ETEC) is the leading bacterial cause of diarrhea in the developing world, as well as the most common cause of traveler's diarrhea. The main hallmarks of this type of bacteria are the expression of one or more enterotoxins and fimbriae used for attachment to host intestinal cells. Longus is a pilus produced by ETEC. These bacteria grown in pleuropneumonia-like organism (PPLO) broth at 37 degrees C and in 5% CO(2) produced longus, showing that the assembly and expression of the pili depend on growth conditions and composition of the medium. To explore the role of longus in the adherence to epithelial cells, quantitative and qualitative analyses were done, and similar levels of adherence were observed, with values of 111.44 x 10(4) CFU/ml in HT-29, 101.33 x 10(4) CFU/ml in Caco-2, and 107.11 x 10(4) CFU/ml in T84 cells. In addition, the E9034A Delta lngA strain showed a significant reduction in longus adherence of 32% in HT-29, 22.28% in Caco-2, and 21.68% in T84 cells compared to the wild-type strain. In experiments performed with nonintestinal cells (HeLa and HEp-2 cells), significant differences were not observed in adherence between E9034A and derivative strains. Interestingly, the E9034A and E9034A Delta lngA(pLngA) strains were 30 to 35% more adherent in intestinal cells than in nonintestinal cells. Twitching motility experiments were performed, showing that ETEC strains E9034A and E9034A Delta lngA(pLngA) had the capacity to form spreading zones while ETEC E9034A Delta lngA does not. In addition, our data suggest that longus from ETEC participates in the colonization of human colonic cells.

Indexed as

Bacterial AdhesionCaco-2 CellsCell Line, TumorCulture MediaEnterotoxigenic Escherichia coliEnzyme-Linked Immunosorbent AssayEpithelial CellsEscherichia coli ProteinsFimbriae ProteinsFlow CytometryFluorescent Antibody TechniqueGene Expression Regulation, BacterialHeLa CellsHT29 CellsHumansIntestinal MucosaCulture MediaEscherichia coli ProteinsFimbriae Proteins

Identifiers

PMID20348256
PMCPMC2876479
OpenAlexW1972671178

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.