Evidence map›Paper›PMID 24705415›Full record

ArticlePloS one2014

Echicetin coated polystyrene beads: a novel tool to investigate GPIb-specific platelet activation and aggregation.

Alexey Navdaev, Hariharan Subramanian, Alexey Petunin, Kenneth J Clemetson, Stepan Gambaryan, Ulrich Walter

Open access · goldAbstract readComparative StudyEvaluation Study
In one paragraph

Article in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.8field-weighted citation impact, top 29% 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

7 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Feedback Regulation of Syk by Protein Kinase C in Human Platelets.International journal of molecular sciences · 2019
    Article
  5. Article
  6. Review
  7. Article
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

6 authors at 5 institutions in 3 countries.

Alexey NavdaevInstitute of Clinical Biochemistry and Pathobiochemistry, University of Wuerzburg, Wuerzburg, Germany.
Hariharan SubramanianInstitute of Clinical Biochemistry and Pathobiochemistry, University of Wuerzburg, Wuerzburg, Germany.
Alexey PetuninInstitute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia.
Kenneth J ClemetsonTheodor Kocher Institute, University of Berne, Berne, Switzerland.
Stepan GambaryanInstitute of Clinical Biochemistry and Pathobiochemistry, University of Wuerzburg, Wuerzburg, Germany; Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia.
Ulrich WalterCenter for Thrombosis and Hemostasis (CTH), University Medical Center Mainz, Mainz, Germany.
University of Würzburg · DEInstitute of Evolutionary Physiology and Biochemistry · RUSiberian Branch of the Russian Academy of Sciences · RUUniversity Medical Center of the Johannes Gutenberg University Mainz · DEUniversity of Bern · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

von Willebrand factor/ristocetin (vWF/R) induces GPIb-dependent platelet agglutination and activation of αIIbβ3 integrin, which also binds vWF. These conditions make it difficult to investigate GPIb-specific signaling pathways in washed platelets. Here, we investigated the specific mechanisms of GPIb signaling using echicetin-coated polystyrene beads, which specifically activate GPIb. We compared platelet activation induced by echicetin beads to vWF/R. Human platelets were stimulated with polystyrene beads coated with increasing amounts of echicetin and platelet activation by echicetin beads was then investigated to reveal GPIb specific signaling. Echicetin beads induced αIIbβ3-dependent aggregation of washed platelets, while under the same conditions vWF/R treatment led only to αIIbβ3-independent platelet agglutination. The average distance between the echicetin molecules on the polystyrene beads must be less than 7 nm for full platelet activation, while the total amount of echicetin used for activation is not critical. Echicetin beads induced strong phosphorylation of several proteins including p38, ERK and PKB. Synergistic signaling via P2Y12 and thromboxane receptor through secreted ADP and TxA2, respectively, were important for echicetin bead triggered platelet activation. Activation of PKG by the NO/sGC/cGMP pathway inhibited echicetin bead-induced platelet aggregation. Echicetin-coated beads are powerful and reliable tools to study signaling in human platelets activated solely via GPIb and GPIb-triggered pathways.

Indexed as

Blood Coagulation TestsCarrier ProteinsHumansMicrospheresPlatelet ActivationPlatelet AggregationPlatelet Glycoprotein GPIb-IX ComplexPolystyrenesViper Venomsvon Willebrand FactorCarrier ProteinsechicetinPlatelet Glycoprotein GPIb-IX ComplexPolystyrenesViper Venomsvon Willebrand Factor

Identifiers

PMID24705415
PMCPMC3976279
OpenAlexW1964679728

What OpenQuestion holds

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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.