How Mechanical Stress Affects Fibrin Clots
Author Information
Author(s): Varjú I, Sótonyi P, Machovich R, Szabó L, Tenekedjiev K, Silva M M C G, Longstaff C, Kolev K
Primary Institution: Department of Medical Biochemistry, Semmelweis University, Budapest
Hypothesis
The study aims to characterize the lytic susceptibility of fibrin exposed to mechanical stress.
Conclusion
Mechanical stress makes fibrin more resistant to breakdown by impairing the activation of plasminogen and reducing the sensitivity of the fibrin network to plasmin.
Supporting Evidence
- Stretched fibrin clots showed a two- to three-fold decrease in plasmin generation compared to non-stretched clots.
- Mechanical stress resulted in a denser fibrin network that was less susceptible to lysis.
- Confocal microscopy revealed impaired tPA binding to stretched fibrin.
Takeaway
When blood clots are stretched, they become tougher and harder to dissolve, which can make it more difficult to treat blood clots in patients.
Methodology
The study involved analyzing human thrombi using scanning electron microscopy and comparing the lytic susceptibility of stretched and non-stretched fibrin clots.
Limitations
The study was limited to a small sample size and specific patient demographics.
Participant Demographics
10 patients (4 men and 6 women, mean age: 66 years; range: 49–91)
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website