title: White cell reduction during plateletpheresis: a comparison of three blood cell separators.
abstract: BACKGROUND
  White cell (WBC)-reduced single-donor platelet concentrates (SDPs) can be collected by the newest generation of blood cell separators. Three WBC-reduction techniques during plateletpheresis were investigated in the present study with respect to WBC content and platelet yield.
  
  
  METHODS
  The Amicus device used the elutriation principle for WBC reduction, and separations with periodically alternating interface position (PAIP) were employed in the AS.TEC 204. WBC reduction by in-line filtration was performed in the MCS+. Platelets were measured electronically and WBCs were determined manually (Nageotte chamber).
  
  
  RESULTS
  In-line filtered SDPs showed significantly lower WBC content (0.088+/-0.178 x 10(6)) than SDPs that were WBC reduced by elutriation (0.31+/-0.48 x 106) or PAIP technique (0.89+/-1.57 x 10(6), p = 0.0001). Platelet yield (5.0+/-0.46 x 10(11)) was significantly higher in components obtained with the Amicus device (p = 0.0001). The AS.TEC 204 and MCS+ gave similar results for platelet yields: 3.15+/-0.63 and 3.28+/-0.71 x 10(11), respectively.
  
  
  CONCLUSIONS
  The plateletpheresis systems studied allow the collection of WBC-reduced SDPs. In-line filtration resulted in the best WBC reduction. Some SDPs collected with the devices studied had a WBC content >1 x 10(6) per unit. Platelet yield was significantly higher in SDPs from the Amicus device.
authors.affiliation: Institute for Transfusion Medicine, Essen University Clinics, Germany. rainer.moog@uni-essen.de
authors.forename: R
authors.initials: R
authors.lastname: Moog
authors.forename: N
authors.initials: N
authors.lastname: Müller
mesh_terms: D001773:Blood Cells / Q000166:cytology; D002469:Cell Separation; D006400:Hematocrit; D006801:Humans; D007958:Leukocyte Count; D010976:Platelet Count; D010983:Plateletpheresis