Evidence map›Paper›PMID 8896446›Full record

ArticleThe EMBO journal1996

A novel membrane receptor with high affinity for lysosphingomyelin and sphingosine 1-phosphate in atrial myocytes.

M Bünemann, K Liliom, B K Brandts, L Pott, J L Tseng, D M Desiderio, G Sun, D Miller, G Tigyi

Open access · bronzeAbstract read
In one paragraph

Article in The EMBO journal, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
6.5field-weighted citation impact, top 3% 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

26 citing papers in PubMed, 127 citations in OpenAlex.

  1. Differential Modulation ofFrontiers in physiology · 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

9 authors at 2 institutions in 2 countries.

M BünemannInstitut für Physiologie, Ruhr-Universität, Bochum, Germany.
K Liliom
B K Brandts
L Pott
J L Tseng
D M Desiderio
G Sun
D Miller
G Tigyi
Ruhr University Bochum · DEUniversity of Tennessee Health Science Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Activation of IK(ACh) is the major effect of the vagal neutrotransmitter acetylcholine in the heart. We report that both lysosphingomyelin (D-erythro-sphingosyl-phosphorylcholine; SPC) and sphingosine 1-phosphate (SPP) activate IK(ACh) in guinea pig atrial myocytes through the same receptor with an EC50 of 1.5 and 1.2 nM, respectively. Pertussis toxin abolished the activation of IK(ACh) by either lipid. The putative receptor showed an exquisite stereoselectivity for the naturally occurring D-erythro-(2S,3R)-SPC stereoisomer, the structure of which was confirmed by mass spectroscopy and NMR. These lipids caused complete homologous and heterologous desensitization with each other but not with ACh, indicating that both act on the same receptor. This receptor displays a distinct structure-activity relationship: it requires an unsubstituted amino group because N-acetyl-SPC, lysophosphatidic acid and lysophosphatidylcholine were inactive. Because SPP and SPC are naturally occurring products of membrane lipid metabolism, it appears that these compounds might be important extracellular mediators acting on a family of bona fide G protein-coupled receptors. Expression of these receptors in the heart raises the possibility that sphingolipids may be a part of the physiological and/or pathophysiological regulation of the heart. Based on their ligand selectivity we propose a classification of the sphingolipid receptors.

Indexed as

LysophospholipidsPotassium Channels, Inwardly RectifyingAnimalsElectrophysiologyG Protein-Coupled Inwardly-Rectifying Potassium ChannelsGuinea PigsHeart AtriaMagnetic Resonance SpectroscopyModels, MolecularPertussis ToxinPhosphorylcholinePotassium ChannelsReceptors, MuscarinicSpectrometry, Mass, Fast Atom BombardmentSphingosineStereoisomerismG Protein-Coupled Inwardly-Rectifying Potassium ChannelsLysophospholipidsPertussis ToxinPhosphorylcholinePotassium ChannelsPotassium Channels, Inwardly RectifyingReceptors, MuscarinicSphingosinesphingosine 1-phosphatesphingosine phosphorylcholineVirulence Factors, Bordetella

Identifiers

PMID8896446
PMCPMC452297
OpenAlexW1546322929

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.