Evidence map›Paper›PMID 11580098›Full record

ArticleInflammation2001

Induction of nitric oxide synthesis by probiotic Lactobacillus rhamnosus GG in J774 macrophages and human T84 intestinal epithelial cells.

R Korhonen, R Korpela, M Saxelin, M Mäki, H Kankaanranta, E Moilanen

Abstract read
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In one paragraph

Article in Inflammation, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

28 citing papers in PubMed, 97 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Cell-Free Supernatant fromMolecules (Basel, Switzerland) · 2022
    Article
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  11. Article
  12. Review
  13. Review
  14. Current Perspectives on Antihypertensive Probiotics.Probiotics and antimicrobial proteins · 2017
    Review
  15. Article
  16. Article
  17. Article
  18. Biodiversity of Intestinal Lactic Acid Bacteria in the Healthy Population.Advances in experimental medicine and biology · 2016
    Review
  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

6 authors at 3 institutions in 1 country.

R KorhonenThe Immunopharmacological Research Group, Medical School, University of Tampere, Finland.
R Korpela
M Saxelin
M Mäki
H Kankaanranta
E Moilanen
Tampere University · FITampere University Hospital · FIValio (Finland) · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUNDS AND

aimsProbiotic Lactobacillus rhamnosus GG (LGG) has proved to be beneficial in the treatment of viral- and antibiotic-associated diarrhea but the mechanisms of action remain unknown. Nitric oxide (NO) is involved in the protective mechanisms in the gastrointestinal tract and may contribute to some of the beneficial effects of probiotics. The aim of the present study was to investigate if induction of NO synthesis is involved in the cellular actions of LGG.

methodsNO synthesis and its regulation were measured in cultures of J774 murine macrophages and human T84 colon epithelial cells. NO production was measured as its metabolite nitrite accumulated into the culture medium. Inducible nitric oxide synthase (iNOS) protein and iNOS mRNA were detected by Western blot and RT-PCR, respectively.

resultsIn J774 macrophages, LGG induced a low level production of NO in the presence of gamma interferon (IFNgamma) and it was inhibited by NOS inhibitors, cycloheximide and by a NF-kappa B inhibitor pyrrolidinedithiocarbamate. Accordingly, LGG and IFNgamma-stimulation increased iNOS mRNA and protein levels. T84 cells produced NO in response to LGG when first primed with a combination of IL-1beta, TNFalpha and IFNgamma. Lipoteichoic acid (LA), an antigenic structure in gram-positive bacteria, also induced NO formation in J774 cells in the presence of IFNgamma suggesting that LA may be the active component in LGG.

conclusionsLGG induces NO production in J774 macrophages and in human T84 colon epithelial cells through induction of iNOS by a mechanism involving activation of transcription factor NF-kappaB. Induction of iNOS and low-level synthesis of NO may be involved in the protective actions of LGG in the gastrointestinal tract.

Indexed as

LactobacillusCell LineCytokinesEnzyme InductionEpithelial CellsIntestinesLipopolysaccharidesMacrophagesNF-kappa BNitric OxideNitric Oxide SynthaseNitric Oxide Synthase Type IIProbioticsRNA, MessengerTeichoic AcidsCytokinesLipopolysaccharideslipoteichoic acidNF-kappa BNitric OxideNitric Oxide SynthaseNitric Oxide Synthase Type IIRNA, MessengerTeichoic Acids

Identifiers

PMID11580098
OpenAlexW1519229946

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.