Evidence map›Paper›PMID 20811938›Full record

ArticleInflammation2011

Cathelicidin peptide LL-37 modulates TREM-1 expression and inflammatory responses to microbial compounds.

Gimano D Amatngalim, Anastasia Nijnik, Pieter S Hiemstra, Robert E W Hancock

Abstract read
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In one paragraph

Article in Inflammation, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.8field-weighted citation impact, top 27% 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

17 citing papers in PubMed, 28 citations in OpenAlex.

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  12. TREM-1 as a potential therapeutic target in psoriasis.The Journal of investigative dermatology · 2013
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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

4 authors at 2 institutions in 2 countries.

Gimano D AmatngalimDepartment of Microbiology and Immunology, Centre for Microbial Diseases and Immunity Research, University of British Columbia, 2259 Lower Mall Research Station, Vancouver, V6T 1Z4, Canada.
Anastasia Nijnik
Pieter S Hiemstra
Robert E W Hancock
Leiden University · NLUniversity of British Columbia · CA

Funding

Canadian Institutes of Health Research
6 · The paper itself

Abstract

Inflammatory diseases remain an important cause of morbidity and mortality. Cathelicidins are immunomodulatory and antimicrobial peptides with potent anti-endotoxic properties. Although the effects of the human cathelicidin LL-37 on cellular responses to Toll-like receptor (TLR) ligands have been investigated, its effects on responses to other pro-inflammatory stimuli have not been well studied. Triggering receptor expressed on myeloid cells (TREM-1) acts to amplify inflammatory responses and plays important roles in the pathogenesis of endotoxemia. In this work, the effects of LL-37 on responses to TREM-1 stimulation, alone and in the presence of a range of microbial compounds, were analyzed. It was shown that in peripheral blood mononuclear cells LL-37 strongly suppressed synergistic responses to TREM-1 and TLR4 stimulation, partly through the inhibition of TREM-1 expression on monocytes; similar effects were observed using the TLR2 ligand lipoteichoic acid. In contrast, LL-37 stimulated TREM-1 upregulation by peptidoglycan (PGN, TLR2 ligand that is also recognized via nucleotide-binding oligomerization domain containing 2 after fragmentation and intracellular uptake), as well as the responses to combined TREM-1 and PGN stimulation, possibly via the p38 mitogen-activated protein kinase pathway. LL-37 did not affect TREM-1-induced neutrophil degranulation or the production of reactive oxygen species and interleukin-8 by neutrophils. These findings provide further insight into the roles of LL-37 during inflammation and may have implications for its in vivo immunomodulatory properties and for the design of synthetic cathelicidin derivatives as anti-inflammatory and anti-endotoxic molecules.

Indexed as

Antimicrobial Cationic PeptidesCathelicidinsCell DegranulationGene ExpressionHumansInflammationIn Vitro TechniquesLigandsLipopolysaccharidesMembrane GlycoproteinsMonocytesNeutrophilsPeptidoglycanReactive Oxygen SpeciesReceptors, ImmunologicSignal TransductionAntimicrobial Cationic PeptidesCathelicidinsLigandsLipopolysaccharidesMembrane GlycoproteinsPeptidoglycanReactive Oxygen SpeciesReceptors, ImmunologicTLR4 protein, humanToll-Like Receptor 4Toll-Like ReceptorsTREM1 protein, humanTriggering Receptor Expressed on Myeloid Cells-1

Identifiers

PMID20811938
OpenAlexW2131519118

What OpenQuestion holds

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Registered trials

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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.