rhG-CSF in healthy donors: mobilization of peripheral hemopoietic progenitors and effect on peripheral blood leukocytes.
Recombinant human granulocyte colony-stimulating factor (rhG-CSF) 16 micrograms/kg/day was given to 9 healthy donors to recruit hemopoietic progenitors (HP) for allogeneic transplantation or donor leukocyte infusion. rhG-CSF was administered s.c. for 5 days. No side effects were encountered except for moderate bone pain and lumbago. Mobilization was effective, reaching a peak median value of 187 x 10(3) CD34+ cells/ml (range 51.2-1127) and 2170 x 10(3) colony-forming units-granulocyte macrophage (CFU-GM)/ml (range 1138-4190). Peak values were obtained at a median of 4 days of rhG-CSF and represented, respectively, a 13-fold and a 37-fold increase from baseline values (p = 0.0007 and p = 0.006). White blood cell (WBC) counts increased 6-fold from baseline values (p < 0.0007) and reached a median peak of 34 x 10(6)/ml (23.5-59). Polymorphonuclear (PMN), and mononuclear (MNC) cells increased 10-fold and 2-fold, respectively (p = 0.0039 and p = 0.0026) and reached a median peak of 32.1 x 10(6)/ml (18.2-52) and 4.42 x 10(6)/ml (3.14-12.42). Absolute lymphocyte and monocyte counts increased at peak day in all donors 1.5-fold and 5.7-fold from baseline values (p = 0.0017 and p = 0.0018). In 7 of 9 donors, lymphocyte subsets were analyzed in detail. CD3+ and CD19+ lymphocytes increased 1.5-fold and 3-fold, respectively (p = 0.032 for both). NK and activated T lymphocytes doubled at a median of 4 days of rhG-CSF (p = 0.032 and p = NS, respectively). Similar changes were observed in lymphocytes collected in leukapheresis product. T helper and T suppressor subsets displayed a similar increase. Thus, besides the anticipated priming effect on HP and PMN, rhG-CSF in healthy donors produced an unexpected and still unexplained modification of lymphocyte subsets in peripheral blood.
Sica
S
S
Department of Hematology, Catholic University, Rome, Italy.
Rutella
S
S
Di Mario
A
A
Salutari
P
P
Rumi
C
C
Ortu la Barbera
E
E
Etuk
B
B
Menichella
G
G
D'Onofrio
G
G
Leone
G
G
D000293:Adolescent; D000328:Adult; D001772:Blood Cell Count; D001782:Blood Donors; D001853:Bone Marrow / Q000187:drug effects*; D005260:Female; D000069585:Filgrastim; D016179:Granulocyte Colony-Stimulating Factor / Q000009:adverse effects / Q000494:pharmacology*; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells / Q000187:drug effects*; D006801:Humans; D007937:Leukapheresis; D007958:Leukocyte Count / Q000187:drug effects; D017708:Leukocyte Transfusion; D007962:Leukocytes / Q000187:drug effects*; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000139:chemically induced; D011994:Recombinant Proteins
D011994:Recombinant Proteins; D016179:Granulocyte Colony-Stimulating Factor; D000069585:Filgrastim