Evidence map›Paper›PMID 21703408›Full record

ArticleThe American journal of pathology2011

The melanocortin agonist AP214 exerts anti-inflammatory and proresolving properties.

Trinidad Montero-Melendez, Hetal B Patel, Michael Seed, Søren Nielsen, Thomas E N Jonassen, Mauro Perretti

Open access · bronzeAbstract read
In one paragraph

Article in The American journal of pathology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

47 citing papers in PubMed, 80 citations in OpenAlex.

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  20. Melanocortin Regulation of Inflammation.Frontiers in endocrinology · 2019
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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

6 authors at 3 institutions in 2 countries.

Trinidad Montero-MelendezThe William Harvey Research Institute, Barts, and The London School of Medicine, Queen Mary University of London, London, United Kingdom.
Hetal B Patel
Michael Seed
Søren Nielsen
Thomas E N Jonassen
Mauro Perretti
Queen Mary University of London · GBAarhus University · DKUniversity of Copenhagen · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Synthetic and natural melanocortin (MC) peptides afford inhibitory properties in inflammation and tissue injury, but characterization of receptor involvement is still elusive. We used the agonist AP214 to test MC-dependent anti-inflammatory effects. In zymosan peritonitis, treatment of mice with AP214 (400 to 800 μg/kg) inhibited cell infiltration, an effect retained in MC receptor type 1, or MC(1), mutant mice but lost in MC(3) null mice. In vitro, cytokine release from zymosan-stimulated macrophages was affected by AP214, with approximately 80%, 30%, and 40% reduction in IL-1β, tumor necrosis factor-α, and IL-6, respectively. Inhibition of IL-1β release was retained in MC(1) mutant cells but was lost in MC(3) null cells. Furthermore, AP214 augmented uptake of zymosan particles and human apoptotic neutrophils by wild-type macrophages: this proresolving property was lost in MC(3) null macrophages. AP214 displayed its pro-efferocytotic effect also in vivo. Finally, in a model of inflammatory arthritis, AP214 evoked significant reductions in the clinical score. These results indicate that AP214 elicits anti-inflammatory responses, with a preferential effect on IL-1β release. Furthermore, we describe for the first time a positive modulation of an MC agonist on the process of efferocytosis. In all cases, endogenous MC(3) is the receptor that mediates these novel properties of AP214. These findings might clarify the tissue-protective properties of AP214 in clinical settings and may open further development for novel MC agonists.

Indexed as

alpha-MSHAnimalsApoptosisArthritis, ExperimentalBlotting, WesternCytokinesDisease Models, AnimalEnzyme-Linked Immunosorbent AssayHumansInflammationInterleukin-1betaInterleukin-6MacrophagesMacrophages, PeritonealMaleMelanocortinsalpha-MSHAP 214CytokinesInterleukin-1betaInterleukin-6MelanocortinsReceptor, Melanocortin, Type 1Receptor, Melanocortin, Type 3RNA, MessengerTumor Necrosis Factor-alpha

Identifiers

PMID21703408
PMCPMC3123798
OpenAlexW1988342604

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.