title: Optimization of the immunomagnetic selection in microcythemic donors enrolled for haploidentical transplantation.
abstract: BACKGROUND
  Immunomagnetic cell selection (ICS) cells is increasingly used in allogeneic hematopoietic transplantation in order to reduce the T cells quantity. The aim of this study was to evaluate an protocol based on Ficoll method before ICS.
  
  
  METHODS
  The automated procedure was compared with the standard method. In the group 1 the cell processing involves the extraction of the buffy-coat by Ficoll before incubation with antibodies. This procedure was performed with the Sepax S-100 device. The efficacy of this automated procedure was compared with the group 2. In this group, the cell washing and the incubation were performed through the standard method. The CD34+ cells collected by apheresis (HPC-A) were selected with ICS.
  
  
  RESULTS
  The results obtained after Ficoll procedure, showed a total nucleated cells (TNCs) and CD34+ cells recovery of 85.73% (75.90-90.63; SD 4.25) and 79.31% (51.77-112.31; SD 18.40), respectively. The TNC and CD34+ cells recovery after the pre-incubation washing performed through the standard method, was 75.54% (38.36-97.76; SD 22.5) and 61.51% (30.87-81.79; SD 19.3), respectively. The CD34+ cells recovery after ICS was 79% (51.77-100; SD 18.40) and 44% (15.57-88.24; SD 25.91) in the group 1 and the group 2, respectively. This difference was statistically significant (p=0.001).
  
  
  CONCLUSIONS
  The efficacy of the ICS which resulted to be higher in the group 1 compared to the group 2. Overall, our data suggest that the Ficoll procedure before incubation is suitable for the clinical routine in the ICS for haploidentical transplantation in patients affected by thalassemia.
authors: Immunohematology Section, Tor Vergata University and CryoLab-Stem Cells Manipulation and Cryopreservation Laboratory, Rome, Italy.
authors: Maria Cristina
authors: MC
authors: Scerpa
authors: Nicola
authors: N
authors: Daniele
authors: Cecilia
authors: C
authors: Rossi
authors: Chiara
authors: C
authors: Ciammetti
authors: Pietro
authors: P
authors: Sodani
authors: Alessandro
authors: A
authors: Lanti
authors: Gaspare
authors: G
authors: Adorno
authors: Guido
authors: G
authors: Lucarelli
authors: Giancarlo
authors: G
authors: Isacchi
authors: Francesco
authors: F
authors: Zinno
mesh_terms: D000293:Adolescent; D000328:Adult; D000740:Anemia / Q000097:blood / Q000473:pathology / Q000628:therapy; D018952:Antigens, CD34 / Q000097:blood*; D005260:Female; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D018189:Immunomagnetic Separation / Q000295:instrumentation / Q000379:methods; D007937:Leukapheresis / Q000295:instrumentation / Q000379:methods; D007962:Leukocytes / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014184:Transplantation, Homologous
chemical_list: D018952:Antigens, CD34