Modeling Fibrinolysis of Single Fibrin Fibers
Author Information
Author(s): Ouedraogo Roukayatou R., Sowers Hannah K., Lynch Spencer R., Hudson Nathan E., Bannish Brittany E.
Primary Institution: Department of Mathematics and Statistics, University of Central Oklahoma
Hypothesis
How do the rates and patterns of degradation of a single fibrin fiber change with the movement, unbinding, and degradation rates of individual plasmin molecules?
Conclusion
The study provides insights into how single fibrin fibers degrade and suggests that thinner fibers require a higher fraction of degradation for cleavage compared to thicker fibers.
Supporting Evidence
- The model suggests that the degradation rate of fibrin by plasmin should be ≤ 10 s−1.
- Plasmin crawling rates should be between 10 s−1 and 60 s−1.
- The fraction of fibrin that must be degraded for cleavage is higher in thinner fibers and lower in thicker fibers.
Takeaway
This study looks at how a special protein called plasmin breaks down tiny fibers in blood clots, helping us understand how to treat strokes better.
Methodology
A 2D stochastic model was developed to simulate single fibrin fiber lysis initiated by plasmin, using the Gillespie algorithm and laboratory experiments for validation.
Limitations
The model assumes only one plasmin molecule is present in a fiber cross-section and does not account for diffusion of plasmin within a given cross-section.
Digital Object Identifier (DOI)
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