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Assessment of the soluble proteins HMGB1, CD40L and CD62P during various platelet preparation processes and the storage of platelet concentrates: The BEST collaborative study

  • Biomedical Excellence for Safer Transfusion (BEST) Collaborative
  • Établissement Français du Sang Auvergne-Rhône-Alpes (Dpt scientifique)
  • University of Jean Monnet
  • Etablissement Français du Sang (headquarters Dpt)
  • Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Centre, University of Amsterdam, Amsterdam, the Netherlands.
  • Department of Product and Process Development
  • Institut für Immunologie und Transfusionsmedizin (Institute for Immunology and Transfusion Medicine)
  • Military Blood Bank, Utrecht, The Netherlands
  • Vitalant Research Institute
  • Héma-Québec
  • Department of Medical Genetics, Cambridge Institute for Medical Research, University of Cambridge, Cambridge CB2 OXY, UK; NIHR BioResource, Cambridge University Hospitals, Cambridge Biomedical Campus, Cambridge CB2 0QQ UK.
  • Faculty of Medicine, University of British Columbia School of Medicine, Vancouver, British Columbia, Canada
  • Roessingh Research and Development

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

BACKGROUND: Structural and biochemical changes in stored platelets are influenced by collection and processing methods. This international study investigates the effects of platelet (PLT) processing and storage conditions on HMGB1, sCD40L, and sCD62P protein levels in platelet concentrate supernatants (PCs).

STUDY DESIGN/METHODS: PC supernatants (n = 3748) were collected by each international centre using identical centrifugation methods (n = 9) and tested centrally using the ELISA/Luminex platform. Apheresis versus the buffy coat (BC-PC) method, plasma storage versus PAS and RT storage versus cold (4°C) were investigated. We focused on PC preparation collecting samples during early (RT: day 1-3; cold: day 1-5) and late (RT: day 4-7; cold: day 7-10) storage time points.

RESULTS: HMGB1, sCD40L, and sCD62P concentrations were similar during early storage periods, regardless of storage solution (BC-PC plasma and BC-PC PAS-E) or temperature. During storage and without PAS, sCD40L and CD62P in BC-PC supernatants increased significantly (+33% and +41%, respectively) depending on storage temperature (22 vs. 4°C). However, without PAS-E, levels decreased significantly (-31% and -20%, respectively), depending on storage temperature (22 vs. 4°C). Contrastingly, the processing method appeared to have greater impact on HMGB1 release versus storage duration. These data highlight increases in these parameters during storage and differences between preparation methods and storage temperatures.

CONCLUSIONS: The HMGB1 release mechanism/intracellular pathways appear to differ from sCD62P and sCD40L. The extent to which these differences affect patient outcomes, particularly post-transfusion platelet increment and adverse events, warrants further investigation in clinical trials with various therapeutic indications.

Original languageEnglish
JournalTransfusion
Early online date1 Dec 2022
DOIs
Publication statusE-pub ahead of print - 1 Dec 2022

Keywords

  • inflammation
  • platelets
  • storage lesion
  • transfusion

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