Evidence map›Paper›PMID 24676762›Full record

ArticleProbiotics and antimicrobial proteins2014

In vitro comparison of the effects of probiotic, commensal and pathogenic strains on macrophage polarization.

Trine Eker Christoffersen, Lene Therese Olsen Hult, Katarzyna Kuczkowska, Kim Marius Moe, Siv Skeie, Tor Lea, Charlotte Ramstad Kleiveland

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Probiotics and antimicrobial proteins, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
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

18 citing papers in PubMed.

  1. Review
  2. Article
  3. Review
  4. Review
  5. Probiotics During the Therapeutic Management of Periodontitis.Advances in experimental medicine and biology · 2022
    Review
  6. Frontiers in microbiology · 2022
    Article
  7. Review
  8. Article
  9. Review
  10. Milk fermented withCurrent research in food science · 2020
    Article
  11. Review
  12. Article
  13. Article
  14. Review
  15. Frontiers in immunology · 2019
    Article
  16. Review
  17. Article
  18. Review
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.

Trine Eker ChristoffersenFaculty of Engineering, Ostfold University College, 1757, Halden, Norway, trine.e.christoffersen@hiof.no.
Lene Therese Olsen Hult
Katarzyna Kuczkowska
Kim Marius Moe
Siv Skeie
Tor Lea
Charlotte Ramstad Kleiveland

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Macrophages are important with respect to both innate and adaptive immune responses and are known to differentiate into pro-inflammatory M1- or anti-inflammatory M2-phenotypes following activation. In order to study how different bacteria affect macrophage polarization, we exposed murine RAW 264.7 macrophages to sixteen different strains representing probiotic strains, pathogens, commensals and strains of food origin. Increased inducible nitric oxide synthase (iNOS) or arginase-1 gene expression indicates M1 or M2 polarization, respectively, and was quantified by qRT-PCR. Strains of Escherichia and Salmonella elevated iNOS expression more so than strains of Enterococcus, Lactobacillus and Lactococcus, indicating that Gram-negative strains are more potent M1 inducers. However, strain-specific responses were observed. For instance, Escherichia coli Nissle 1917 was a poor inducer of iNOS gene expression compared to the other E. coli strains, while Enterococcus faecalis Symbioflor-1 was more potent in this respect compared to all the eleven Gram-positive strains tested. Macrophage polarization was further characterized by quantifying secreted pro- and anti-inflammatory cytokines. Exposure to the pathogen E. coli 042 produced a cytokine profile indicating M1 differentiation, which is in accordance with the PCR data. However, exposure to most strains resulted in either high or low secretion levels of all cytokines tested, rather than a clear M1 or M2 profile. In general, the Gram-negative strains induced high levels of cytokine secretion compared to the Gram-positive strains. Interestingly, strains of human origin had a higher impact on macrophages compared to strains of food origin.

Indexed as

ProbioticsAnimalsArginaseCell ProliferationCell SurvivalEnterococcusEscherichia coliFood ContaminationFood MicrobiologyGastrointestinal MicrobiomeGene Expression RegulationHumansInterleukin-10Interleukin-2IntestinesLactobacillusArg1 protein, mouseArginaseInterleukin-10Interleukin-2Nitric Oxide Synthase Type IINos2 protein, mouseTumor Necrosis Factor-alpha

Identifiers

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.