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Extracorporeal Plateletpheresis Induces the Interaction of Activated Platelets with White Blood Cells

Kai Gutensohn, A. Alisch, William R. Krueger, N. Kroeger, Peter Kuehnl

Open publisher page 14 citations

Abstract

BACKGROUND AND OBJECTIVES: In this study we investigated whether platelet activation during apheresis results in the binding of platelets to white blood cells. MATERIAL AND METHODS: Analysis of platelet-leukocyte interaction was performed using multiparameter, three-color flow cytometry. RESULTS: Over the duration of the procedure, there was an increase in the surface expression of CD62p (P-selectin) and CD63 (p<0.05), and also in the binding of platelets to monocytes (p<0.05), neutrophilic granulocytes (p<0.05) and to CD3+ cells (initially to a low degree; p<0.05). Platelet binding to CD19+ cells did not change significantly. CONCLUSION: This study demonstrates that platelets become activated during apheresis and that following this process, interaction with monocytes and neutrophilic granulocytes occurs.

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BACKGROUND AND OBJECTIVES: In this study we investigated whether platelet activation during apheresis results in the binding of platelets to white blood cells. MATERIAL AND METHODS: Analysis of platelet-leukocyte interaction was performed using multiparameter, three-color flow cytometry. RESULTS: Over the duration of the procedure, there was an increase in the surface expression of CD62p (P-selectin) and CD63 (p<0.05), and also in the binding of platelets to monocytes (p<0.05), neutrophilic granulocytes (p<0.05) and to CD3+ cells (initially to a low degree; p<0.05). Platelet binding to CD19+ cells did not change significantly. CONCLUSION: This study demonstrates that platelets become activated during apheresis and that following this process, interaction with monocytes and neutrophilic granulocytes occurs.

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Available abstract

BACKGROUND AND OBJECTIVES: In this study we investigated whether platelet activation during apheresis results in the binding of platelets to white blood cells. MATERIAL AND METHODS: Analysis of platelet-leukocyte interaction was performed using multiparameter, three-color flow cytometry. RESULTS: Over the duration of the procedure, there was an increase in the surface expression of CD62p (P-selectin) and CD63 (p<0.05), and also in the binding of platelets to monocytes (p<0.05), neutrophilic granulocytes (p<0.05) and to CD3+ cells (initially to a low degree; p<0.05). Platelet binding to CD19+ cells did not change significantly. CONCLUSION: This study demonstrates that platelets become activated during apheresis and that following this process, interaction with monocytes and neutrophilic granulocytes occurs.

Key concepts: Platelet, Plateletpheresis, Apheresis, CD63, Flow cytometry, Platelet activation, P-selectin, Immunology

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