Evidence map›Paper›PMID 15265806›Full record

ArticleBritish journal of pharmacology2004

Synergistic action between inhibition of P2Y12/P2Y1 and P2Y12/thrombin in ADP- and thrombin-induced human platelet activation.

Sven Nylander, Christer Mattsson, Sofia Ramström, Tomas L Lindahl

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in British journal of pharmacology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
1.3field-weighted citation impact, top 18% 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

29 citing papers in PubMed, 58 citations in OpenAlex.

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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 3 institutions in 1 country.

Sven NylanderDepartment of Molecular Pharmacology, Preclinical R&D, AstraZeneca R&D, Mölndal, Sweden. sven.nylander@astrazeneca.com
Christer Mattsson
Sofia Ramström
Tomas L Lindahl
AstraZeneca (Sweden) · SELinköping University · SELinköping University Hospital · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The objective of this study was to investigate if there is a synergistic effect of a combination of P2Y(12) and P2Y(1) inhibition and P2Y(12) and thrombin inhibition, on ADP- and thrombin-induced platelet activation, respectively. The rationale being that these combinations will cause a concurrent inhibition of both G alpha(q) and Galpha (i) signalling. Blood from healthy volunteers was preincubated with AR-C69931MX, a reversible P2Y(12) antagonist; MRS2179, a reversible P2Y(1) antagonist; or melagatran, a direct reversible thrombin inhibitor; alone or in various combinations prior to activation with ADP or thrombin. Platelet function in whole blood was assessed by flow cytometry using the antibody PAC-1 to estimate the expression of active alpha (IIb)beta(3) (the fibrinogen receptor GPIIb/IIIa). A synergistic effect was evaluated by comparing the concentrations in the different combinations with those of corresponding equipotent concentrations of each single inhibitor alone. The equipotent single concentrations were experimentally obtained from concentration response curves performed in parallel. A synergistic effect regarding inhibition of ADP-induced platelet activation (10 microM) was obtained with different combinations of AR-C69931MX and MRS2179. Inhibition of thrombin-induced platelet activation (2 nM) with combinations of AR-C69931MX and the thrombin inhibitor melagatran did also result in a strong synergistic effect. To our knowledge, this is the first time that data supporting a synergistic effect has been published for the inhibitor combinations described. Whether this synergistic effect in vitro also results in an improved antithrombotic effect in vivo with or without an increased risk of bleeding remains to be studied in well-conducted clinical studies.

Indexed as

Purinergic P2 Receptor AntagonistsAdenosine DiphosphateDose-Response Relationship, DrugHumansMembrane ProteinsPlatelet ActivationReceptors, Purinergic P2Receptors, Purinergic P2Y1Receptors, Purinergic P2Y12ThrombinAdenosine DiphosphateMembrane ProteinsN(6)-methyl-2'-deoxyadenosine 3',5'-diphosphateP2RY12 protein, humanP2RY1 protein, humanPurinergic P2 Receptor AntagonistsReceptors, Purinergic P2Receptors, Purinergic P2Y1Receptors, Purinergic P2Y12Thrombin

Identifiers

PMID15265806
PMCPMC1575192
OpenAlexW2073737948

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.