Effect of Cryo-Processing on Platelet-Rich Autoplasma Preparations.

Area of Science:

• Regenerative Medicine
• Biotechnology
• Biochemistry

Background:

• Platelet-derived growth factor (PDGF) is crucial for angiogenesis and cell migration/proliferation.
• Platelet-rich plasma (PRP) is a concentrate of autologous platelets and growth factors.
• Understanding cryo-processing effects on PRP quality is vital for its clinical use.

Purpose of the Study:

• To investigate the impact of cryo-processing on the qualitative characteristics of autologous platelet-rich plasma (PRP).
• To assess changes in PRP properties at various time points post-cryo-processing.

Main Methods:

• Autologous PRP was obtained from 31 donors via double centrifugation.
• Platelet counts and concentrations of PDGF-AA and PDGF-BB were analyzed in fresh and cryo-processed PRP.
• PRP samples were analyzed at 2 weeks and 2 months after cryo-processing at -35 °C.
• Both activated (10% CaCl2) and non-activated PRP samples were evaluated.

Main Results:

• L-PRP preparations showed 1.7 times higher platelet concentration than P-PRP.
• Non-activated L-PRP had 1.8 times higher PDGF-AA and 2.9 times higher PDGF-BB compared to non-activated P-PRP.
• Cryo-processing of non-activated P-PRP led to a significant increase in PDGF-BB concentration after 2 weeks, sustained at 2 months.
• Activated PRP showed no significant changes in PDGF-BB concentration post-cryo-processing.

Conclusions:

• Cryo-processing of non-activated autologous L-PRP effectively preserves and enhances its properties.
• This cryo-processing method supports the potential for long-term storage and clinical application of PRP.
• Cryo-preserved L-PRP offers a promising option for regenerative therapies.