title: Sustained decrease of peripheral lymphocytes after allogeneic blood stem cell aphereses.
abstract: 48 healthy donors underwent peripheral blood stem cell (PBSC) apheresis for allogeneic transplantation beginning on day 4 of G-CSF (2 x 5 microg/kg) mobilization. In one to four (median two) large-volume mononuclear cell aphereses, a median of 55.9 x 10(9) of lymphocytes (range 21.0-109.2 x 10[9]) were collected, an amount comparable to lymphocyte numbers removed by therapeutic lymphaphereses in autoimmune diseases. Mean peripheral lymphocyte counts decreased from premobilization values of 2.31 x 10(9)/l to 1.31 x 10(9)/l at a median of 34 d (1 month) and 1.53 x 10(9)/l at a median of 327 d (11 months). The decrease in peripheral lymphocyte counts was significantly correlated with the number of lymphocytes removed and the number of aphereses. Neutrophil and platelet counts returned to normal values after 1 month whereas monocyte counts and haemoglobin concentrations were significantly decreased at 1 month but not at 11 months.
authors.affiliation: Department of Haematology and Oncology, Hannover Medical School, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Novotny
authors.forename: J
authors.initials: J
authors.lastname: Kadar
authors.forename: B
authors.initials: B
authors.lastname: Hertenstein
authors.forename: D
authors.initials: D
authors.lastname: Schröder
authors.forename: D
authors.initials: D
authors.lastname: Petersen
authors.forename: L
authors.initials: L
authors.lastname: Arseniev
authors.forename: W
authors.initials: W
authors.lastname: Stangel
authors.forename: A
authors.initials: A
authors.lastname: Ganser
mesh_terms: D005260:Female; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects*; D006801:Humans; D007937:Leukapheresis / Q000009:adverse effects*; D007958:Leukocyte Count; D008231:Lymphopenia / Q000209:etiology*; D008297:Male; D009504:Neutrophils; D010976:Platelet Count; D012189:Retrospective Studies