Anna L Peters1,2, Boukje Beuger3, Donald M Mock4, John A Widness5, Dirk de Korte3,6, Nicole P Juffermans1,2, Alexander P J Vlaar1,2, Robin van Bruggen3. 1. Laboratory of Experimental Intensive Care and Anesthesia. 2. Department of Intensive Care, Academic Medical Center. 3. Sanquin Blood Supply, Department of Blood Cell Research, Sanquin Research, Amsterdam, The Netherlands. 4. Department of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, Little Rock, Arkansas. 5. Department of Pediatrics, University of Iowa Children's Hospital, Iowa City, Iowa. 6. Department of Product and Process Development, Sanquin Blood Bank, Amsterdam, The Netherlands.
Abstract
BACKGROUND: It is thought that the clearance of transfused red blood cells (RBCs) is related both to the storage time of the transfusion product and to the inflammatory status of the recipient. We investigated these effects in a randomized, "two-hit," healthy volunteer transfusion model, comparing autologous RBCs that were stored for 35 days with those that were stored for 2 days. STUDY DESIGN AND METHODS: Healthy male volunteers donated 1 unit of autologous RBCs either 2 days (2D) or 35 days (35D) before the study date. The experiment was started by infusion of 2 ng/kg lipopolysaccharide ("first hit"). Two hours later, the stored RBCs ("second hit") were reinfused, followed by the labeling of RBCs with biotin. Clearance of biotin-labeled RBCs (BioRBCs) was measured during the 5-hour posttransfusion endotoxemia period along with measurements of phosphatidylserine (PS) exposure, lactadherin binding, and expression of CD47 (cluster of differentiation 47; a transmembrane protein encoded by the CD47 gene). RESULTS: In the 2D stored RBCs group, 1.5% ± 3.4% of infused BioRBCs were cleared from the circulation 5 hours posttransfusion versus 4.8% ± 4.0% in the 35D stored RBCs group (p = 0.1). There were no differences in PS exposure, lactadherin binding, or CD47 expression between fresh and stored RBCs or between pretransfusion and posttransfusion measurements. CONCLUSION: Our study shows a low clearance of RBCs even during endotoxemia. Furthermore, short-term clearance of BioRBCs during endotoxemia was not related to storage duration. Consistent with these observations, PS exposure, lactadherin binding, and CD47 expression did not differ between 2D and 35D stored cells before or after transfusion. We conclude that, in the presence of endotoxemia, clearance of 35D stored autologous RBCs is not increased compared with 2D stored fresh RBCs.
RCT Entities:
BACKGROUND: It is thought that the clearance of transfused red blood cells (RBCs) is related both to the storage time of the transfusion product and to the inflammatory status of the recipient. We investigated these effects in a randomized, "two-hit," healthy volunteer transfusion model, comparing autologous RBCs that were stored for 35 days with those that were stored for 2 days. STUDY DESIGN AND METHODS: Healthy male volunteers donated 1 unit of autologous RBCs either 2 days (2D) or 35 days (35D) before the study date. The experiment was started by infusion of 2 ng/kg lipopolysaccharide ("first hit"). Two hours later, the stored RBCs ("second hit") were reinfused, followed by the labeling of RBCs with biotin. Clearance of biotin-labeled RBCs (BioRBCs) was measured during the 5-hour posttransfusion endotoxemia period along with measurements of phosphatidylserine (PS) exposure, lactadherin binding, and expression of CD47 (cluster of differentiation 47; a transmembrane protein encoded by the CD47 gene). RESULTS: In the 2D stored RBCs group, 1.5% ± 3.4% of infused BioRBCs were cleared from the circulation 5 hours posttransfusion versus 4.8% ± 4.0% in the 35D stored RBCs group (p = 0.1). There were no differences in PS exposure, lactadherin binding, or CD47 expression between fresh and stored RBCs or between pretransfusion and posttransfusion measurements. CONCLUSION: Our study shows a low clearance of RBCs even during endotoxemia. Furthermore, short-term clearance of BioRBCs during endotoxemia was not related to storage duration. Consistent with these observations, PS exposure, lactadherin binding, and CD47 expression did not differ between 2D and 35D stored cells before or after transfusion. We conclude that, in the presence of endotoxemia, clearance of 35D stored autologous RBCs is not increased compared with 2D stored fresh RBCs.
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Authors: Robert L Schmidt; Donald M Mock; Robert S Franco; Robert M Cohen; Anne K North; José A Cancelas; Christof Geisen; Ronald G Strauss; Alexander P Vlaar; Demet Nalbant; John A Widness Journal: Transfusion Date: 2017-03-05 Impact factor: 3.157
Authors: Donald M Mock; Demet Nalbant; Svetlana V Kyosseva; Robert L Schmidt; Guohua An; Nell I Matthews; Alexander P J Vlaar; Robin van Bruggen; Dirk de Korte; Ronald G Strauss; José A Cancelas; Robert S Franco; Peter Veng-Pedersen; John A Widness Journal: Transfusion Date: 2018-05-16 Impact factor: 3.157
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