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A novel technique for preparing improved buffy coat platelet concentrates
Z R Mrowiec1, L Oleksowicz, J P Dutcher
1Department of Oncology and Pathology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY 10467, USA.
Blood Cells, Molecules & Diseases
|January 1, 1995
Summary
Platelet concentrates from buffy coats, prepared using a novel suspended bag technique, show superior in vitro function compared to conventional pelleted platelets. This method significantly reduces leukocyte contamination and enhances platelet aggregation and morphology.
Area of Science:
- Transfusion Medicine
- Hematology
- Biotechnology
Background:
- Platelet concentrates are crucial for treating bleeding disorders.
- Conventional preparation methods can lead to leukocyte contamination and reduced platelet function.
- Improving platelet storage and preparation is essential for effective transfusion therapy.
Purpose of the Study:
- To compare the in vitro platelet function of platelet concentrates prepared by a novel buffy coat method versus conventional pelleting.
- To evaluate the impact of a suspended bag centrifugation technique on platelet quality.
Main Methods:
- Platelet concentrates were prepared using either conventional pelleting or a novel buffy coat method with suspended bag centrifugation.
- In vitro platelet function assays included ADP-induced aggregation, hypotonic shock recovery, morphology scoring, and GMP-140 expression.
- Leukocyte contamination, oxygen consumption, carbon dioxide production, pH, and total ATP were also assessed.
Main Results:
- The novel buffy coat method significantly reduced leukocyte contamination by 95% compared to the pelleted method.
- Platelets from buffy coats demonstrated enhanced ADP-induced aggregation, improved hypotonic shock recovery, and better morphology scores.
- No significant differences were observed in O2 consumption, CO2 production, pH, or total ATP between the two groups at day 5.
Conclusions:
- Platelet concentrates prepared from buffy coats using suspended bag centrifugation exhibit superior in vitro function.
- This novel preparation method offers a promising alternative to conventional techniques, improving platelet quality and reducing contamination.