Key markers and detection methods for evaluating platelet dysfunction in mechanical circulatory support devices

Area of Science:

• Biomaterials Science
• Hematology
• Medical Devices

Background:

• Mechanical circulatory support devices (MCSDs) are vital for end-stage heart failure but pose hemocompatibility challenges.
• Non-physiological shear stress (NPSS) from MCSDs induces platelet dysfunction, leading to thrombotic and bleeding risks.

Purpose of the Study:

• To review the hemostatic process, NPSS effects on platelets, and markers/assays for platelet dysfunction in MCSD therapy.
• To identify key markers and methods for assessing and potentially mitigating NPSS-induced platelet dysfunction.

Main Methods:

• Literature review synthesizing knowledge on hemostasis, NPSS, platelet markers, and detection assays.
• Discussion of techniques including FACS, ELISA, PAS assay, SEM, and fluorescence microscopy.
• Focus on specific markers such as P-selectin, platelet-derived microparticles (PDMPs), phosphatidylserine (PS), and thrombin.

Main Results:

• NPSS triggers platelet activation and receptor shedding, resulting in both thrombosis and bleeding.
• Phosphatidylserine (PS) and thrombin show unique responses to NPSS, indicating their potential as targeted markers.
• Morphological and aggregation assessments offer visualized insights into NPSS-mediated platelet dysfunction.

Conclusions:

• Combining diverse markers and assays is crucial for understanding and mitigating NPSS-induced complications in MCSD therapy.
• Future research should validate NPSS-specific biomarkers and standardize detection methods.
• Elucidating interactions with hemolysis and coagulopathy is essential for improving MCSD safety and efficacy.