期刊
JOURNAL OF THE ROYAL SOCIETY INTERFACE
卷 5, 期 24, 页码 705-722出版社
ROYAL SOC
DOI: 10.1098/rsif.2007.1202
关键词
computational biology; platelet aggregation and coagulation; cellular Potts model; multiscale stochastic systems; blood clot; thrombus development
资金
- NHLBI NIH HHS [P01 HL073750, HL073750] Funding Source: Medline
- NIGMS NIH HHS [1R0-GM076692-01, R01 GM076692] Funding Source: Medline
A two-dimensional multiscale model is introduced for studying formation of a thrombus (clot) in a blood vessel. It involves components for modelling viscous, incompressible blood plasma; non-activated and activated platelets; blood cells; activating chemicals; fibrinogen; and vessel walls and their interactions. The macroscale dynamics of the blood flow is described by the continuum Navier Stokes equations. The microscale interactions between the activated platelets, the platelets and fibrinogen and the platelets and vessel wall are described through an extended stochastic discrete cellular Potts model. The model is tested for robustness with respect to fluctuations of basic parameters. Simulation results demonstrate the development of an inhomogeneous internal structure of the thrombus, which is confirmed by the preliminary experimental data. We also make predictions about different stages in thrombus development, which can be tested experimentally and suggest specific experiments. Lastly, we demonstrate that the dependence of the thrombus size on the blood flow rate in simulations is close to the one observed experimentally.
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