title: Collection and composition of autologous peripheral blood stem cells graft in patients with acute myeloid leukemia: influence on hematopoietic recovery and outcome.
abstract: Hematopoietic stem cell (HSC) transplantation is a standard approach in the treatment of hematological malignant diseases. For the last 15 years the main source of cells for transplantation have been peripheral blood stem cells (PBSC). With the availability of hematopoietic growth factors and understanding the advantages of treatment with PBSC, the application of bone marrow (BM) was supplanted. The aim of this survey was to explore the success of PBSC collection, the factors which influence the success of PBSC collection, the composition and the quality of graft and their influence on hematopoietic recovery and outcome after transplantation in patients with acute myeloid leukemia (AML). PBSC were collected by the method of leukapheresis after applying a combination of chemotherapy and growth factors or only growth factors. The quality of graft was determined with the clonogenic progenitor cell assay and with the flow cytometry analysis. Of the total 134 patients with AML, who were submitted to HSC mobilization, the collection was successful in 78 (58.2%) patients. The collection was more successful after the first than after the second attempt of HSC mobilization (49% vs. 11%). The criteria for effective mobilization were the number of leukocytes > 3 x 10(9)/L and the concentration of CD34+ cells > 20 x 10(3)/mL in the peripheral blood on the first day of leukapheresis. The number of CD34+ cells infused had the strongest impact on hematopoietic recovery. We noted significantly faster hematological recovery of neutrophils and platelets, fewer number of transfused units of red blood cells and platelets, shorter duration of the tranfusion support, shorter treatment with intravenous antibiotic therapy and shorter hospitalization after PBSC compared to BM transplantation. These advantages could provide their standard application in the treatment of patients with AML.
authors.affiliation: Department of Transfusion Medicine and Cellular Therapy, University Hospital Center Zagreb, Zagreb, Croatia. mraos@kbc-zagreb.hr
authors.forename: Mirela
authors.initials: M
authors.lastname: Raos
authors.forename: Damir
authors.initials: D
authors.lastname: Nemet
authors.forename: Ines
authors.initials: I
authors.lastname: Bojanić
authors.forename: Dubravka
authors.initials: D
authors.lastname: Sertić
authors.forename: Drago
authors.initials: D
authors.lastname: Batinić
authors.forename: Vesna
authors.initials: V
authors.lastname: Dusak
authors.forename: Klara
authors.initials: K
authors.lastname: Dubravcić
authors.forename: Sanja
authors.initials: S
authors.lastname: Mazić
authors.forename: Ranka
authors.initials: R
authors.lastname: Serventi-Seiwerth
authors.forename: Mirando
authors.initials: M
authors.lastname: Mrsić
authors.forename: Branka
authors.initials: B
authors.lastname: Golubić-Cepulić
authors.forename: Boris
authors.initials: B
authors.lastname: Labar
mesh_terms: D000293:Adolescent; D000328:Adult; D001803:Blood Transfusion; D002648:Child; D002675:Child, Preschool; D005260:Female; D006410:Hematopoiesis; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D007937:Leukapheresis; D015470:Leukemia, Myeloid, Acute / Q000473:pathology* / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D020127:Recovery of Function; D012189:Retrospective Studies; D014182:Transplantation, Autologous; D016896:Treatment Outcome; D055815:Young Adult