Evidence map›Paper›PMID 19030108›Full record

ArticlePloS one2008

Differential roles of the PKC novel isoforms, PKCdelta and PKCepsilon, in mouse and human platelets.

Catherine J Pears, Kelly Thornber, Jocelyn M Auger, Craig E Hughes, Beata Grygielska, Majd B Protty, Andrew C Pearce, Steve P Watson

Open access · goldAbstract readComparative Study
In one paragraph

Article in PloS one, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
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

24 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
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  3. Experimental conditions shapeFrontiers in immunology · 2025
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  6. mTOR regulates GPVI-mediated platelet activation.Journal of translational medicine · 2021
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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

8 authors at 2 institutions in 1 country.

Catherine J PearsDepartment of Biochemistry, University of Oxford, Oxford, United Kingdom. catherine.pears@bioch.ox.ac.uk
Kelly Thornber
Jocelyn M Auger
Craig E Hughes
Beata Grygielska
Majd B Protty
Andrew C Pearce
Steve P Watson
University of Birmingham · GBUniversity of Oxford · GB

Funding

British Heart FoundationWellcome Trust
6 · The paper itself

Abstract

backgroundIncreasing evidence suggests that individual isoforms of protein kinase C (PKC) play distinct roles in regulating platelet activation. METHODOLOGY/PRINCIPAL

findingsIn this study, we focus on the role of two novel PKC isoforms, PKCdelta and PKCepsilon, in both mouse and human platelets. PKCdelta is robustly expressed in human platelets and undergoes transient tyrosine phosphorylation upon stimulation by thrombin or the collagen receptor, GPVI, which becomes sustained in the presence of the pan-PKC inhibitor, Ro 31-8220. In mouse platelets, however, PKCdelta undergoes sustained tyrosine phosphorylation upon activation. In contrast the related isoform, PKCepsilon, is expressed at high levels in mouse but not human platelets. There is a marked inhibition in aggregation and dense granule secretion to low concentrations of GPVI agonists in mouse platelets lacking PKCepsilon in contrast to a minor inhibition in response to G protein-coupled receptor agonists. This reduction is mediated by inhibition of tyrosine phosphorylation of the FcRgamma-chain and downstream proteins, an effect also observed in wild-type mouse platelets in the presence of a PKC inhibitor.

conclusionsThese results demonstrate a reciprocal relationship in levels of the novel PKC isoforms delta and epsilon in human and mouse platelets and a selective role for PKCepsilon in signalling through GPVI.

Indexed as

Platelet ActivationAnimalsBlood PlateletsHumansMicePhosphorylationPlatelet Membrane GlycoproteinsProtein IsoformsProtein Kinase CProtein Kinase C-deltaProtein Kinase C-epsilonReceptors, CollagenSignal TransductionThrombinPlatelet Membrane Glycoproteinsplatelet membrane glycoprotein VIProtein IsoformsProtein Kinase CProtein Kinase C-deltaProtein Kinase C-epsilonReceptors, CollagenThrombin

Identifiers

PMID19030108
PMCPMC2583049
OpenAlexW2171703111

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.