Evidence map›Paper›PMID 12540556›Full record

ArticleInfection and immunity2003

Saccharomyces boulardii interferes with enterohemorrhagic Escherichia coli-induced signaling pathways in T84 cells.

Stephanie Dahan, Guillaume Dalmasso, Veronique Imbert, Jean-Francois Peyron, Patrick Rampal, Dorota Czerucka

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 4 pooled it
4.3field-weighted citation impact, top 6% 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

70 citing papers in PubMed, 4 syntheses or guidelines pooled it, 161 citations in OpenAlex.

  1. Pooled it
  2. Efficacy and safety ofFrontiers in cellular and infection microbiology · 2025
    Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Trial
  8. Review
  9. The probiotic yeastFrontiers in microbiology · 2026
    Article
  10. Frontiers in immunology · 2026
    Article
  11. Review
  12. Pharmaceuticals (Basel, Switzerland) · 2025
    Article
  13. Article
  14. Probiotics and the intestinal tight junction barrier function.Frontiers in cell and developmental biology · 2025
    Review
  15. Article
  16. A comprehensive guide to assess gut mycobiome and its role in pathogenesis and treatment of inflammatory bowel disease.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2024
    Review
  17. Review
  18. The efficacy and safety ofTherapeutic advances in gastroenterology · 2023
    Article
  19. Frontiers in nutrition · 2022
    Article
  20. Review

10 more citing papers are in PubMed but not listed here.

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

6 authors at 2 institutions in 1 country.

Stephanie DahanLaboratoire de Gastroentérologie et Nutrition, Faculté de Médecine, Université de Nice-Sophia Antipolis, 06107 Nice Cedex 2, France.
Guillaume Dalmasso
Veronique Imbert
Jean-Francois Peyron
Patrick Rampal
Dorota Czerucka
Inserm · FRUniversité Côte d'Azur · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Enterohemorrhagic Escherichia coli (EHEC) infections are associated with the modification of tight-junction permeability and synthesis of proinflammatory cytokine interleukin-8 (IL-8). In a previous study, it was demonstrated that EHEC-induced IL-8 secretion is due to the involvement of the mitogen-activated protein kinase (MAPK), AP-1, and NF-kappaB pathways. In this study, we investigated the effect of the yeast Saccharomyces boulardii on EHEC infection in T84 cells. For this purpose, cells were (i) incubated with bacteria and yeast at the same time or (ii) incubated overnight with yeast cells that were maintained during infection or eliminated by several washes before infection. Coincubation is sufficient to maintain the transmonolayer electrical resistance (TER) of EHEC-infected cells, whereas the preincubation of cells with the yeast without elimination of the yeast during infection is necessary to significantly decrease IL-8 secretion. We thus analyzed the mechanisms of S. boulardii action. We showed that S. boulardii has no effect on EHEC growth or on EHEC adhesion. Kinetics studies revealed that EHEC-induced myosin light chain (MLC) phosphorylation precedes the decrease of TER. ML-7, an MLC kinase inhibitor, abolishes the EHEC-induced MLC phosphorylation and decrease of TER. Studies show that S. boulardii also abolishes EHEC-induced MLC phosphorylation. We demonstrated that the preincubation of cells with S. boulardii without washes before EHEC infection inhibits NF-kappaB DNA binding activity, phosphorylation and degradation of IkappaB-alpha, and activation of the three members of a MAPK group (extracellular signal-regulated protein kinases 1 and 2, p38, and c-jun N-terminal kinase). These findings demonstrate that S. boulardii exerts a preventive effect on EHEC infection by (i) interfering with one of the transduction pathways implicated in the control of tight-junction structure and (ii) decreasing IL-8 proinflammatory secretion via inhibition of the NF-kappaB and MAPK signaling pathways in infected T84 cells.

Indexed as

Signal TransductionBacterial AdhesionCell LineCell Membrane PermeabilityColonElectric ImpedanceEscherichia coli O157HumansInterleukin-8Mitogen-Activated Protein KinasesMyosin Light ChainsNF-kappa BPhosphorylationSaccharomycesInterleukin-8Mitogen-Activated Protein KinasesMyosin Light ChainsNF-kappa B

Identifiers

PMID12540556
PMCPMC145355
OpenAlexW2103736238

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.