Evidence map›Paper›PMID 24547784›Full record

ArticleBritish journal of pharmacology2014

Inhibition of phosphodiesterase-3 by levosimendan is sufficient to account for its inotropic effect in failing human heart.

O Orstavik, S H Ata, J Riise, C P Dahl, G Ø Andersen, F O Levy, T Skomedal, J-B Osnes, E Qvigstad

Open access · bronzeAbstract read
In one paragraph

Article in British journal of pharmacology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

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

  1. Pooled it
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  16. OR-1896 increases force of contraction in the isolated human atrium.Naunyn-Schmiedeberg's archives of pharmacology · 2023
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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 1 country.

O OrstavikDepartment of Pharmacology, Faculty of Medicine, University of Oslo and Oslo University Hospital, Oslo, Norway; K.G. Jebsen Cardiac Research Centre, Faculty of Medicine, University of Oslo, Oslo, Norway; Center for Heart Failure Research, Faculty of Medicine, University of Oslo, Oslo, Norway.
S H Ata
J Riise
C P Dahl
G Ø Andersen
F O Levy
T Skomedal
J-B Osnes
E Qvigstad
Oslo University Hospital · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeLevosimendan is known as a calcium sensitizer, although it is also known to inhibit PDE3. We aimed to isolate each component and estimate their contribution to the increased cardiac contractility induced by levosimendan. EXPERIMENTAL APPROACH: Contractile force was measured in electrically stimulated ventricular strips from explanted failing human hearts and left ventricular strips from normal male Wistar rats. PDE activity was measured in a two-step PDE activity assay on failing human ventricle. KEY

resultsLevosimendan exerted a positive inotropic effect (PIE) reaching maximum at 10(-5)  M in ventricular strips from failing human hearts. In the presence of the selective PDE3 inhibitor cilostamide, the PIE of levosimendan was abolished. During treatment with a PDE4 inhibitor and a supra-threshold concentration of isoprenaline, levosimendan generated an amplified inotropic response. This effect was reversed by β-adrenoceptor blockade and undetectable in strips pretreated with cilostamide. Levosimendan (10(-6)  M) increased the potency of β-adrenoceptor agonists by 0.5 log units in failing human myocardium, but not in the presence of cilostamide. Every inotropic response to levosimendan was associated with a lusitropic response. Levosimendan did not affect the concentration-response curve to calcium in rat ventricular strips, in contrast to the effects of a known calcium sensitizer, EMD57033 [5-(1-(3,4-dimethoxybenzoyl)-1,2,3,4-tetrahydroquinolin-6-yl)-6-methyl-3,6-dihydro-2H-1,3,4-thiadiazin-2-one]. PDE activity assays confirmed that levosimendan inhibited PDE3 as effectively as cilostamide. CONCLUSIONS AND IMPLICATIONS: Our results indicate that the PDE3-inhibitory property of levosimendan was enough to account for its inotropic effect, leaving a minor, if any, effect to a calcium-sensitizing component.

Indexed as

Adrenergic beta-AgonistsAnimalsCalciumCardiotonic AgentsHeartHeart FailureHumansHydrazonesIn Vitro TechniquesIsoproterenolMaleMilrinoneMyocardial ContractionPhosphodiesterase 3 InhibitorsPhosphodiesterase 4 InhibitorsPyridazinesAdrenergic beta-AgonistsCalciumCardiotonic AgentscilostamideEMD 53998HydrazonesIsoproterenolMilrinonePhosphodiesterase 3 InhibitorsPhosphodiesterase 4 InhibitorsPyridazinesQuinolinesQuinolonesRolipramSimendanThiadiazines

Identifiers

PMID24547784
PMCPMC4294032
OpenAlexW1822797420

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.