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October 23, 2010BloodOpen Access

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

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Key result

CalDAG-GEFI deficiency in mice virtually abolished arterial thrombosis while maintaining hemostatic function, suggesting a better safety profile than P2Y12 inhibitors like clopidogrel.

Why the study?

Does genetic deletion of CalDAG-GEFI reduce thrombosis and preserve hemostasis compared to clopidogrel in mice?

Population

Mice (CalDAG-GEFI mice, wild-type mice, and mice with specific deletion of the C1-like domain of CalDAG-GEFI…

Comparison

Genetic deletion of CalDAG-GEFI or its C1-like… vs Wild-type mice treated with clopidogrel

Design

Preclinical

Authors

MSMoritz StollaUniversity of WashingtonLSLucia StefaniniSapienza University of RomeRRRosemary Claire RodenPennsylvania State University

Discussion

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Implication

Does not support clinical use of CalDAG-GEFI inhibitors; leaves open translation of thrombosis protection without bleeding to humans.

Structured PICO

Does genetic deletion of CalDAG-GEFI reduce thrombosis and preserve hemostasis compared to clopidogrel in mice?

P
Population
Mice (CalDAG-GEFI(-/-) mice, wild-type mice, and mice with specific deletion of the C1-like domain of CalDAG-GEFI in circulating platelets)
I
Intervention
Genetic deletion of CalDAG-GEFI or its C1-like domain
C
Comparator
Wild-type mice treated with clopidogrel
O
Outcome
Thrombus formation and hemostasis (blood loss) ex vivo and in vivosurrogate

Inhibition of CalDAG-GEFI may provide strong protection from atherothrombotic complications with a better safety profile (less bleeding) than P2Y12 inhibitors like clopidogrel.

Cite This Study

Stolla et al. (2010) studied Thrombosis and hemostasis. CalDAG-GEFI deficiency/inhibition vs. Clopidogrel (P2Y12 inhibition) / wild-type was evaluated on Thrombus formation and hemostasis. CalDAG-GEFI deficiency in mice virtually abolished arterial thrombosis while maintaining hemostatic function, suggesting a better safety profile than P2Y12 inhibitors like clopidogrel.

synapsesocial.com/papers/6a93a6b8d89edeac28720364https://doi.org/10.1182/blood-2010-07-297713

Topics

Dual antiplatelet therapy
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Pharmacokinetic, pharmacodynamic and clinical profile of novel antiplatelet drugs targeting vascular diseases2009 · 120 citations
  2. 2Persistence of platelet thrombus formation in arterioles of mice lacking both von Willebrand factor and fibrinogen2000 · 496 citations
  3. 3CalDAG-GEFI is at the nexus of calcium-dependent platelet activation2009 · 155 citations
  4. 4CalDAG-GEFI and protein kinase C represent alternative pathways leading to activation of integrin αIIbβ3 in platelets2008 · 134 citations
  5. 5Structure-function analysis reveals discrete β3 integrin inside-out and outside-in signaling pathways in platelets2006 · 54 citations