Related Experiment Videos
Cryopreservation of platelets isolated with the IBM 2997 blood cell separator: a rapid and simplified approach
Abstract:
The equivalent of 5-7 units of platelets, isolated from a single donor with the IBM Blood Cell Processor 2997 using a dual stage separation chamber, was frozen with the cryoprotectant dimethylsulfoxide (DMSO). The DMSO-saline solution was added directly to the platelets, and the platelets were frozen in a polyvinyl chloride plastic bag by storage in a -80 degrees C mechanical freezer. Washing the thawed platelets with a phosphate-buffered sodium chloride-dextrose solution, pH of 5.0, removed about 95% of the DMSO. In vitro freeze-thaw-wash recovery was 80%, and in vivo 51Cr platelet recovery was 31%. Platelet dense body granules were well maintained after freezing, thawing, and washing. This is a safe and effective method of platelet cryopreservation which can be performed in less time than other currently used methods.
Insights
This study presents a safe and effective method for platelet cryopreservation using dimethylsulfoxide (DMSO). The process involves freezing platelets and washing away DMSO, achieving good recovery and maintaining platelet quality for potential clinical use.
Area of Science:
- Transfusion Medicine
- Hematology
- Cryobiology
Background:
- Platelet transfusions are critical for managing bleeding disorders.
- Current methods for platelet preservation have limitations.
- Long-term storage of platelets is essential for blood banks.
Purpose of the Study:
- To evaluate a novel method for cryopreserving platelets.
- To assess the efficacy and safety of DMSO-based platelet freezing.
- To determine the recovery and quality of cryopreserved platelets.
Main Methods:
- Platelets were isolated using the IBM Blood Cell Processor 2997.
- Platelets were frozen with dimethylsulfoxide (DMSO) in a -80°C freezer.
- Thawed platelets were washed to remove DMSO, and recovery was assessed in vitro and in vivo.
Main Results:
- In vitro freeze-thaw-wash recovery was 80%.
- In vivo 51Cr platelet recovery was 31%.
- Platelet dense body granules were well maintained post-cryopreservation.
Conclusions:
- This method offers a safe and effective approach to platelet cryopreservation.
- The process is faster than existing methods.
- Cryopreserved platelets maintained structural integrity and function.