Blood plasma coagulation studied by surface plasmon resonance

Area of Science:

• Biophysics
• Hematology
• Biomaterials Science

Background:

• Blood plasma coagulation is a complex process vital for hemostasis.
• Understanding coagulation dynamics is crucial for diagnosing and treating bleeding disorders.
• Current methods for analyzing coagulation have limitations in real-time monitoring.

Purpose of the Study:

• To investigate blood plasma coagulation in real-time using surface plasmon resonance (SPR).
• To analyze the effects of varying thromboplastin and heparin concentrations on coagulation.
• To correlate SPR findings with fibrin network structures observed via atomic force microscopy (AFM).

Main Methods:

• Utilized a surface plasmon resonance (SPR) apparatus for real-time coagulation monitoring.
• Analyzed SPR response curves by fitting to a sigmoid equation to extract time constants.
• Employed atomic force microscopy (AFM) to examine fibrin network structures on sensor surfaces post-clotting.

Main Results:

• Thromboplastin dose-dependently increased the time constant of blood plasma coagulation.
• Heparin addition counteracted the pro-coagulant effect of thromboplastin.
• AFM revealed that decreased thromboplastin concentration led to increased fibrin fiber thickness.

Conclusions:

• SPR and AFM provide complementary insights into blood coagulation dynamics.
• The study demonstrates a correlation between SPR-derived parameters and fibrin network morphology.
• These findings support the utility of SPR and AFM as valuable tools for analyzing blood coagulation.