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Updated: Dec 20, 2025
09:38
A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
Published on: February 14, 2017
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CD36-fibrin interaction propagates FXI-dependent thrombin generation of human platelets
Mareike Döhrmann1, Stephanie Makhoul1, Kathrin Gross1
1Center for Thrombosis and Hemostasis (CTH), University Medical Center, Johannes Gutenberg-University Mainz, Mainz, Germany.
Summary
CD36 amplifies thrombin generation on platelets, crucial for blood clotting. Blocking CD36 normalizes excessive thrombin generation in chronic kidney disease (CKD) patients, suggesting a role in hypercoagulability.
Area of Science:
- Hematology
- Immunology
- Biochemistry
Background:
- Thrombin plays a key role in thrombo-inflammatory diseases by converting fibrinogen to fibrin and activating blood cells.
- Platelets amplify thrombin formation, and CD36 on platelets enhances reactivity to damage-associated molecular patterns.
Purpose of the Study:
- To investigate the role of CD36 in thrombin generation on human platelets.
- To explore the CD36 pathway in patients with advanced chronic kidney disease (CKD).
Main Methods:
- Calibrated automated thrombography (CAT) was used to measure thrombin generation.
- Experiments involved CD36-deficient platelets, blocking antibodies (anti-CD36 FA6.152), pharmacological inhibitors, and factor-depleted plasma.
- Flow cytometry assessed platelet activation markers and coagulation factor binding.
Main Results:
- CD36 deficiency or blockade impaired thrombin generation.
- CD36-dependent thrombin generation involved Factor XI (FXI), fibrin, and platelet signaling (GPIbα, SFKs).
- CD36 ligation specifically bound soluble fibrin, recruiting coagulation factors. CKD patients showed elevated soluble fibrin and enhanced thrombin generation, normalized by CD36 blockade.
Conclusions:
- CD36 is a significant amplifier of platelet-dependent thrombin generation, particularly when anionic phospholipid exposure is limited.
- The CD36 pathway may contribute to the hypercoagulable state observed in chronic kidney disease (CKD).
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