Evidence map›Paper›PMID 17653288›Full record

ArticlePloS one2007

Commensal bacteria and expression of two major intestinal chemokines, TECK/CCL25 and MEC/CCL28, and their receptors.

François Meurens, Mustapha Berri, Richard H Siggers, Benjamin P Willing, Henri Salmon, Andrew G Van Kessel, Volker Gerdts

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

35 citing papers in PubMed, 65 citations in OpenAlex.

  1. Review
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  4. Observational
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  9. Mucosal Chemokines.Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research · 2017
    Review
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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

7 authors at 2 institutions in 2 countries.

François MeurensLymphocyte et Immunité des Muqueuses, UR 1282, Infectiologie Animale et Santé Publique, Institut National de la Recherche Agronomique, Nouzilly, France. meurens@tours.inra.fr
Mustapha Berri
Richard H Siggers
Benjamin P Willing
Henri Salmon
Andrew G Van Kessel
Volker Gerdts
University of Saskatchewan · CAInfectiologie Animale et Santé Publique · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCCL25/TECK and CCL28/MEC are CC chemokines primarily expressed in thymic dendritic cells and mucosal epithelial cells. Their receptors, CCR9 and CCR10, are mainly expressed on T and B lymphocytes. In human, mouse, pig and sheep CCL25 and CCL28 play an important role in the segregation and the compartmentalization of the mucosal immune system. As evidenced by early comparisons of germ-free and conventional animals, the intestinal bacterial microflora has a marked effect on host intestinal immune functions. However, little is known about the impact of bacterial colonization on constitutive and induced chemokine expressions as well as on the generation of anti-inflammatory mechanisms. METHODOLOGY/PRINCIPAL

findingsTherefore, we decided to focus by qPCR on the mRNA expression of two main gut chemokines, CCL25 and CCL28, their receptors CCR9 and CCR10, the Tregs marker Foxp3 and anti-inflammatory cytokines TGF-beta and IL-10 following colonization with different bacterial species within the small intestine. To accomplish this we used an original germ-free neonatal pig model and monoassociated pigs with a representative Gram-negative (Escherichia coli) or Gram-positive (Lactobacillus fermentum) commensal bacteria commonly isolated from the neonatal pig intestine. Our results show a consistent and marked effect of microbial colonization on the mRNA expression of intestinal chemokines, chemokine receptors, Foxp3 and TGF-beta. Moreover, as evidenced by in vitro experiments using two different cell lines, the pattern of regulation of CCL25 and CCL28 expression in the gut appears complex and suggests an additional role for in vivo factors. CONCLUSIONS/SIGNIFICANCE: Taken together, the results highlight the key role of bacterial microflora in the development of a functional intestinal immune system in an elegant and relevant model for human immune system development.

Indexed as

AnimalsChemokinesChemokines, CCEscherichia coliForkhead Transcription FactorsGene Expression RegulationHumansIntestine, SmallMiceReceptors, CCRReceptors, CCR10RNA, MessengerSheepSwineT-Lymphocytes, RegulatoryTranscription, GeneticCC chemokine receptor 9CCL25 protein, humanCcl25 protein, mouseCCL28 protein, humanCcl28 protein, mouseCCR10 protein, humanChemokinesChemokines, CCForkhead Transcription FactorsFOXP3 protein, humanReceptors, CCRReceptors, CCR10RNA, Messenger

Identifiers

PMID17653288
PMCPMC1919421
OpenAlexW2162796711

What OpenQuestion holds

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LicenceCC BY
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.