Wolfgang Miesbach: A Hidden Platelet Activation State Bridging Thrombosis and Inflammation
Wolfgang Miesbach, Professor of Medicine at Frankfurt University Hospital, shared on LinkedIn about a recent article by Rainer Kaiser and Leo Nicolai, published in Nature Reviews Cardiology:
”Procoagulant Platelets in Cardiovascular Thrombosis (Nature Portfolio Reviews Cardiology).
This comprehensive review by Rainer Kaiser and Leo Nicolai from the University Hospital Ludwig-Maximilian University in Munich, Germany and DZHK Deutsches Zentrum für Herz-Kreislauf-Forschung e. V. examines a hidden platelet activation state that bridges thrombosis and inflammation across arterial clots, venous thromboembolism, stroke, and immune-driven diseases.
Beyond Classical Platelet Aggregation
Most think of platelets as simple clot-formers. But they adopt a second identity—procoagulant platelets—that directly generate thrombin.
What’s Different?
Under extreme activation (thrombin + collagen + high shear stress), platelets transform: membrane flipping exposes phosphatidylserine, creating a landing pad for coagulation factors. The platelet becomes a coagulation factory.
Clinical Relevance
Elevated in coronary artery disease, deep vein thrombosis, ischemic stroke
Drive immune-mediated thrombosis in COVID-19 severity, VITT, HIT
Shared FcγRIIA activation mechanism across immune diseases.
Why Aspirin and Current Drugs Fail
Aspirin and anticoagulants bypass this pathway entirely. This activation requires sustained calcium surges and mitochondrial permeability transition—distinct from classical aggregation targets. They cannot stop the mitochondrial cascade that powers procoagulant transformation.
Therapeutic Opportunity
Selective inhibition (cyclophilin D, TMEM16F, aquaporin-1) reduces thrombosis with minimal bleeding—unlike broad antiplatelet approaches. Selectively target pathological hyperactivation while preserving protective hemostasis. Beyond aspirin.
Title: Procoagulant platelets: linking coagulation and thromboinflammation in cardiovascular disease
Authors: Rainer Kaiser, Leo Nicolai
Read the Full Article on Nature Reviews Cardiology.
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