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Biomechanics in thrombus formation from direct cellular simulations
Ting Ye1, Xuejiao Zhang1, Guansheng Li1
1Department of Computational Mathematics, School of Mathematics, Jilin University, Changchun, 130012, China.
Physical Review. E
|November 20, 2020
Summary
High blood flow velocity is key to preventing thrombus formation, more so than antiplatelet drugs. Reducing platelet adhesion also helps block microvessels effectively.
Area of Science:
- Biophysics
- Computational Biology
- Hematology
Background:
- Thrombus formation is complex due to diverse blood component behaviors.
- Numerical simulation of thrombus formation is challenging but crucial for understanding mechanisms.
Purpose of the Study:
- To numerically model thrombus formation using biomechanics.
- To investigate the impact of blood flow velocity, platelet adhesion, platelet-red blood cell interaction, and red blood cell deformability on thrombus formation and microvessel blockage.
Main Methods:
- Employed a smoothed dissipative particle dynamics-immersed boundary method (a mesoscale particle-based approach).
- Simulated platelet adhesion and aggregation, red blood cell deformation and aggregation, and their interactions.
- Modeled microvessel blockage dynamics.
Main Results:
- Increased blood flow velocity most effectively reduced microvessel blockage.
- Reduced platelet adhesion ability also efficiently mitigated thrombus formation.
- Decreasing platelet-red blood cell interaction strength did not consistently alleviate blockage.
- Increased red blood cell deformability showed limited improvement in severely blocked microvessels.
Conclusions:
- High blood flow rate is critical for thrombosis prevention and treatment, potentially exceeding the efficacy of current drugs.
- Therapeutic strategies targeting platelet-red blood cell interactions or red blood cell deformability may have limited clinical impact on thrombosis.
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