Evidence map›Paper›PMID 24421045›Full record

ArticleInfection and immunity2014

Repression of flagella is a common trait in field isolates of Salmonella enterica serovar Dublin and is associated with invasive human infections.

Lucía Yim, Sebastián Sasías, Arací Martínez, Laura Betancor, Verónica Estevez, Paola Scavone, Alejandro Bielli, Alfredo Sirok, José Alejandro Chabalgoity

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.7field-weighted citation impact, top 8% 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

24 citing papers in PubMed, 35 citations in OpenAlex.

  1. Microbiology spectrum · 2026
    Article
  2. Article
  3. Article
  4. Genome degradation promotesNational science review · 2023
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Safety of theFrontiers in veterinary science · 2022
    Article
  10. Article
  11. Article
  12. Pathogenic signature of invasive non-typhoidalHuman vaccines & immunotherapeutics · 2020
    Review
  13. 3 Biotech · 2020
    Article
  14. High similarity and high frequency of virulence genes among Salmonella Dublin strains isolated over a 33-year period in Brazil.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2020
    Article
  15. Article
  16. Observational
  17. Article
  18. 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

9 authors at 3 institutions in 1 country.

Lucía YimDepartamento de Desarrollo Biotecnológico, Instituto de Higiene, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay.
Sebastián Sasías
Arací Martínez
Laura Betancor
Verónica Estevez
Paola Scavone
Alejandro Bielli
Alfredo Sirok
José Alejandro Chabalgoity
Universidad de la República · UYInstituto de Investigaciones Biológicas Clemente Estable · UYMinisterio de Salud Pública · UY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The nontyphoidal Salmonella enterica serovar Dublin is adapted to cattle but infrequently infects humans, very often resulting in invasive infections with high levels of morbidity and mortality. A Salmonella-induced intestinal acute inflammatory response is postulated as a mechanism to prevent bacterial dissemination to systemic sites. In S. enterica serovar Typhimurium, flagella contribute to this response by providing motility and FliC-mediated activation of pattern recognition receptors. In this study, we found 4 Salmonella enterica isolates, with the antigenic formula 9,12:-:-, that, based on fliC sequence and multilocus sequence type (MLST) analyses, are aflagellate S. Dublin isolates. Interestingly, all were obtained from human bloodstream infections. Thus, we investigated the potential role of flagella in the unusual invasiveness exhibited by S. Dublin in humans by analyzing flagellation and proinflammatory properties of a collection of 10 S. Dublin human clinical isolates. We found that 4 of 7 blood isolates were aflagellate due to significantly reduced levels of fliC expression, whereas all 3 isolates from other sources were flagellated. Lack of flagella correlated with a reduced ability of triggering interleukin-8 (IL-8) and CCL20 chemokine expression in human intestinal Caco-2 cells and with reduced early inflammation in the ceca of streptomycin-pretreated C57/BL6 mice. These results indicate that flagella contribute to the host intestinal inflammatory response to Salmonella serovar Dublin and suggest that their absence may contribute to its systemic dissemination through dampening of the gut immune response. Analysis of FliC production in a collection of cattle isolates indicated that the aflagellate phenotype is widely distributed in field isolates of S. Dublin.

Indexed as

Analysis of VarianceAnimalsCaco-2 CellsCecumChemokine CCL20FemaleFlagellaFlagellinHumansInterleukin-8MiceMice, Inbred C57BLPromoter Regions, GeneticSalmonella entericaSalmonella InfectionsSpecies SpecificityChemokine CCL20FlagellinInterleukin-8

Identifiers

PMID24421045
PMCPMC3993380
OpenAlexW2151704503

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.