Extracorporeal therapy of sepsis by purified granulocyte concentrates: ex vivo circulation model
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Le résumé fourni par la source
BACKGROUND: Immune cell dysfunction is a central part of immune paralysis in sepsis. Granulocyte concentrate (GC) transfusions can induce tissue damage via local effects of neutrophils. The hypothesis of an extracorporeal plasma treatment with granulocytes is to show beneficial effects with fewer side effects. Clinical trials with standard GC have supported this approach. This ex vivo study investigated the functional properties of purified granulocyte preparations during the extracorporeal plasma treatment. METHODS: Purified GC were stored for up to 3 days and compared with standard GC in an immune cell perfusion therapy model. The therapy consists of a plasma separation device and an extracorporeal circuit. Plasma is perfused through the tubing system with donor immune cells of the GC, and only the treated plasma is filtered for re-transfusion. The donor immune cells are retained in the extracorporeal system and discarded after treatment. Efficacy of granulocytes regarding phagocytosis, oxidative burst as well as cell viability and metabolic parameters were assessed. RESULTS: In pGC, the metabolic surrogate parameters of cell functionality showed comparable courses even after a storage period of 72 h. In particular, glucose and oxygen consumption were lower after extended storage. The course of lactate dehydrogenase concentration yields no indication of cell impairment in the extracorporeal circulation. The cells were viable throughout the entire study period and exhibited preserved phagocytosis and oxidative burst functionality. CONCLUSION: The granulocytes demonstrated full functionality in the 6 h extracorporeal circuits after 3 days storage and in septic shock plasma. This is demonstrating the functionality of the system and encourages further clinical studies.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Extracorporeal therapy of sepsis by purified granulocyte concentrates: ex vivo circulation model
- Date Crossref
- 14/02/2023
- Éditeur
- Wiley
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Rostock Department of Anaesthesiology pays non établi dans la noticeUniversité ou école supérieure
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Fraunhofer Institute for Cell Therapy and Immunology Department of Extracorporeal Immunomodulation pays non établi dans la noticeStructure de recherche
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Medizinische Hochschule Hannover pays non établi dans la noticeUniversité ou école supérieure
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ARTCLINE GmbH Rostock Germany pays non établi dans la noticeEntreprise
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Medical Faculty Department of Medicine pays non établi dans la noticeUniversité ou école supérieure
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Institute of Transfusion Medicine and Transplant Engineering pays non établi dans la noticeStructure de recherche
Department of Anaesthesiology — University of Rostock, Department of Extracorporeal Immunomodulation — Fraunhofer Institute for Cell Therapy and Immunology et Medizinische Hochschule Hannover, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.