Evidence map›Paper›PMID 23272218›Full record

ArticlePloS one2012

The mast cell degranulator compound 48/80 directly activates neurons.

Michael Schemann, Eva Maria Kugler, Sabine Buhner, Christopher Eastwood, Jemma Donovan, Wen Jiang, David Grundy

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 15% 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

40 citing papers in PubMed, 1 synthesis or guideline pooled it, 73 citations in OpenAlex.

  1. Pooled it
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  10. Curcumin inhibits the pruritus in mice through mast cell MrgprB2 receptor.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
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  11. Mast cell-derived BH4 is a critical mediator of postoperative pain.bioRxiv : the preprint server for biology · 2023
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  12. Article
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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.

Michael SchemannHuman Biology, Technische Universität München, Freising, Germany. schemann@wzw.tum.de
Eva Maria Kugler
Sabine Buhner
Christopher Eastwood
Jemma Donovan
Wen Jiang
David Grundy
University of Sheffield · GBTechnical University of Munich · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCompound 48/80 is widely used in animal and tissue models as a "selective" mast cell activator. With this study we demonstrate that compound 48/80 also directly activates enteric neurons and visceral afferents. METHODOLOGY/PRINCIPAL

findingsWe used in vivo recordings from extrinsic intestinal afferents together with Ca(++) imaging from primary cultures of DRG and nodose neurons. Enteric neuronal activation was examined by Ca(++) and voltage sensitive dye imaging in isolated gut preparations and primary cultures of enteric neurons. Intraluminal application of compound 48/80 evoked marked afferent firing which desensitized on subsequent administration. In egg albumen-sensitized animals, intraluminal antigen evoked a similar pattern of afferent activation which also desensitized on subsequent exposure to antigen. In cross-desensitization experiments prior administration of compound 48/80 failed to influence the mast cell mediated response. Application of 1 and 10 µg/ml compound 48/80 evoked spike discharge and Ca(++) transients in enteric neurons. The same nerve activating effect was observed in primary cultures of DRG and nodose ganglion cells. Enteric neuron cultures were devoid of mast cells confirmed by negative staining for c-kit or toluidine blue. In addition, in cultured enteric neurons the excitatory action of compound 48/80 was preserved in the presence of histamine H(1) and H(2) antagonists. The mast cell stabilizer cromolyn attenuated compound 48/80 and nicotine evoked Ca(++) transients in mast cell-free enteric neuron cultures. CONCLUSIONS/SIGNIFICANCE: The results showed direct excitatory action of compound 48/80 on enteric neurons and visceral afferents. Therefore, functional changes measured in tissue or animal models may involve a mast cell independent effect of compound 48/80 and cromolyn.

Indexed as

AnimalsCalcium SignalingEnteric Nervous SystemGanglia, SpinalGuinea PigsMaleNeuronsNodose Ganglionp-Methoxy-N-methylphenethylamineSensory Receptor CellsVisceral Afferentsp-Methoxy-N-methylphenethylamine

Identifiers

PMID23272218
PMCPMC3525567
OpenAlexW2033601825

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.