Evidence map›Paper›PMID 20971951›Full record

ArticleBlood2011

The kinetics of αIIbβ3 activation determines the size and stability of thrombi in mice: implications for antiplatelet therapy.

Moritz Stolla, Lucia Stefanini, R Claire Roden, Massiel Chavez, Jessica Hirsch, Teshell Greene, Timothy D Ouellette, Sean F Maloney, Scott L Diamond, Mortimer Poncz and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

43 citing papers in PubMed, 77 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Loss of 12-Lipoxygenase Improves the Post-Transfusion Function of Stored Platelets.Arteriosclerosis, thrombosis, and vascular biology · 2023
    Article
  5. Reversible Platelet Integrin αIIbβ3 Activation and Thrombus Instability.International journal of molecular sciences · 2022
    Review
  6. Article
  7. Article
  8. Novel Mouse Model for Studying Hemostatic Function of Human Platelets.Arteriosclerosis, thrombosis, and vascular biology · 2020
    Article
  9. Article
  10. Review
  11. Review
  12. Article
  13. Article
  14. Platelet Signaling Pathways and New Inhibitors.Arteriosclerosis, thrombosis, and vascular biology · 2018
    Review
  15. Negative regulators of platelet activation and adhesion.Journal of thrombosis and haemostasis : JTH · 2018
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
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

12 authors at 3 institutions in 1 country.

Moritz StollaCardeza Foundation for Hematologic Research and Department of Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
Lucia Stefanini
R Claire Roden
Massiel Chavez
Jessica Hirsch
Teshell Greene
Timothy D Ouellette
Sean F Maloney
Scott L Diamond
Mortimer Poncz
Donna S Woulfe
Wolfgang Bergmeier
Thomas Jefferson University · USUniversity of Pennsylvania · USChildren's Hospital of Philadelphia · US

Funding

TRAINING GRANT IN HEMOSTASIS AND THROMBOSIST32HL007971 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI Rodney M Camire · 2001 to 2026
$10.6M
Novel Molecules in Calcium Signaling in PlateletsR01HL094594 · NHLBI · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BERGMEIER, WOLFGANG · 2009 to 2013
$1.9M
Reaction and Transport Dynamics in Human BloodR01HL056621 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI DIAMOND, SCOTT L · 1996 to 2009
$1.8M
Akt-regulated pathways in platelet functionR01HL081241 · NHLBI · UNIVERSITY OF DELAWARE · PI WOULFE, DONNA S · 2007 to 2011
$1.8M
NHLBI NIH HHS R01 HL056621NHLBI NIH HHS R01 HL081241NHLBI NIH HHS R01 HL094594NHLBI NIH HHS T32 HL007971NHLBI NIH HHS T32HL007971
6 · The paper itself

Abstract

Two major pathways contribute to Ras-proximate-1-mediated integrin activation in stimulated platelets. Calcium and diacyglycerol-regulated guanine nucleotide exchange factor I (CalDAG-GEFI, RasGRP2) mediates the rapid but reversible activation of integrin αIIbβ3, while the adenosine diphosphate receptor P2Y12, the target for antiplatelet drugs like clopidogrel, facilitates delayed but sustained integrin activation. To establish CalDAG-GEFI as a target for antiplatelet therapy, we compared how each pathway contributes to thrombosis and hemostasis in mice. Ex vivo, thrombus formation at arterial or venous shear rates was markedly reduced in CalDAG-GEFI(-/-) blood, even in the presence of exogenous adenosine diphosphate and thromboxane A(2). In vivo, thrombosis was virtually abolished in arterioles and arteries of CalDAG-GEFI(-/-) mice, while small, hemostatically active thrombi formed in venules. Specific deletion of the C1-like domain of CalDAG-GEFI in circulating platelets also led to protection from thrombus formation at arterial flow conditions, while it only marginally increased blood loss in mice. In comparison, thrombi in the micro- and macrovasculature of clopidogrel-treated wild-type mice grew rapidly and frequently embolized but were hemostatically inactive. Together, these data suggest that inhibition of the catalytic or the C1 regulatory domain in CalDAG-GEFI will provide strong protection from athero-thrombotic complications while maintaining a better safety profile than P2Y12 inhibitors like clopidogrel.

Indexed as

AnimalsBlood PlateletsClopidogrelFemaleFlow CytometryGreen Fluorescent ProteinsGuanine Nucleotide Exchange FactorsHemostasisKineticsMaleMesenteryMiceMice, Inbred C57BLMice, KnockoutMice, TransgenicMuscle, SkeletalClopidogrelGreen Fluorescent ProteinsGuanine Nucleotide Exchange FactorsP2ry12 protein, mousePlatelet Aggregation InhibitorsPlatelet Glycoprotein GPIIb-IIIa ComplexRasgrp2 protein, mouseReceptors, Purinergic P2Y12Ticlopidine

Identifiers

PMID20971951
PMCPMC3035063
OpenAlexW2131601918

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.