title: In vitro parameters of cryopreserved leucodepleted and non-leucodepleted red blood cells collected by apheresis or from whole blood and stored in AS-3 for 21 days after thawing.
abstract: BACKGROUND
  The aim of the study was to evaluate the in vitro quality of cryopreserved red blood cells obtained from different sources with or without leucodepletion and stored at 4±2 °C in AS-3 for up to 21 days.
  
  
  METHODS
  Red blood cells were collected by four methods: double erythrocytapheresis, whole blood collection with buffy coat removal, double erythrocytapheresis with in-line leucofiltration, or whole blood collection with in-line leucofiltration. All four types of red blood cells were frozen in 40% glycerol after collection and stored at a temperature below -65 °C for at least 30 days, thawed, deglycerolised and subsequently reconstituted in AS-3. The in vitro haematological and biochemical properties of the thawed red blood cells were tested on days 0, 7, 14, and 21 after deglycerolisation and reconstitution.
  
  
  RESULTS
  Overall, 72 units were processed. Leucodepletion of cryopreserved red blood cells units reduced haemolysis, lowered ammonia concentration, preserved pH and osmolality and led to sustained higher concentrations of ATP. In contrast, the source of red blood cells (apheresis or whole blood) did not affect their quality.
  
  
  CONCLUSIONS
  The quality of all investigated red blood cells units was the same as or even better than that of erythrocytes obtained from double erythrocytapheresis with a 24-hour survival of at least 86% after up to 3 weeks of storage in AS-3.
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Miloš
authors: M
authors: Bohoněk
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Marek
authors: M
authors: Petráš
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Ivo
authors: I
authors: Turek
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Jaroslava
authors: J
authors: Urbanová
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Tomáš
authors: T
authors: Hrádek
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Věra
authors: V
authors: Staropražská
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Jitka
authors: J
authors: Koštířová
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Dana
authors: D
authors: Horčičková
authors: Central Military Hospital Prague, Department of Haematology, Biochemistry and Blood Transfusion, Prague, Czech Republic.
authors: Simona
authors: S
authors: Duchková
mesh_terms: D000255:Adenosine Triphosphate / Q000097:blood; D000641:Ammonia / Q000097:blood; D001793:Blood Preservation; D015925:Cryopreservation; D003451:Cryoprotective Agents / Q000494:pharmacology; D016238:Cytapheresis / Q000379:methods*; D004912:Erythrocytes / Q000187:drug effects; D005990:Glycerol / Q000494:pharmacology; D006454:Hemoglobins / Q000032:analysis; D006461:Hemolysis; D006801:Humans; D006863:Hydrogen-Ion Concentration; D066298:In Vitro Techniques; D047589:Leukocyte Reduction Procedures; D009994:Osmolar Concentration
chemical_list: D003451:Cryoprotective Agents; D006454:Hemoglobins; D000641:Ammonia; D000255:Adenosine Triphosphate; D005990:Glycerol
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