Technique for producing platelet-rich plasma and platelet concentrate: background and process

Area of Science:

• Regenerative Medicine
• Biotechnology
• Hematology

Background:

• Autologous platelet-rich plasma (PRP) is rich in growth factors crucial for tissue healing.
• Platelet-derived growth factor (PDGF) and transforming growth factor beta (TGF-beta) are key mediators of hard and soft tissue maturation.
• Efficient methods for concentrating platelets are needed to maximize therapeutic efficacy.

Purpose of the Study:

• To describe a novel two-step centrifugation technique for preparing platelet-rich plasma.
• To quantify the concentration of platelets and key growth factors (PDGF, TGF-beta) achieved.
• To assess the activation state and viability of platelets post-processing.

Main Methods:

• A two-step centrifugation protocol was employed to isolate and concentrate autologous platelets.
• Platelet concentrations were measured relative to baseline whole blood values.
• Concentrations of PDGF-AB and TGF-beta1 were determined.
• Flow cytometry assessed p-selectin expression to evaluate platelet activation and viability.

Main Results:

• The method achieved platelet concentrations four to eight times higher than baseline whole blood.
• PDGF-AB levels increased by over 500%, and TGF-beta1 levels by over 800%.
• Flow cytometry confirmed that platelets remained quiescent, preserving integrity and viability.

Conclusions:

• The described two-step centrifugation method is effective in producing highly concentrated platelet-rich plasma.
• This technique significantly enhances the yield of critical growth factors (PDGF, TGF-beta) while maintaining platelet quality.
• The method offers a promising approach for applications requiring concentrated autologous platelets in tissue regeneration.