title: Serum G-CSF levels in patients undergoing G-CSF/chemotherapy mobilized peripheral stem cell harvest and predictors of neutrophil and platelet recovery.
abstract: Granulocyte colony-stimulating factor (G-CSF)/Chemotherapy mobilized peripheral blood progenitors are an effective source of stem cells which affords rapid and complete hematopoietic engraftment after myeloablative chemotherapy regimens. The dose of G-CSF most commonly used for mobilization is 5 micrograms/kg. We measured G-CSF levels in patients with chemosensitive malignancies undergoing peripheral stem cell harvest to determine whether there was a relationship between serum G-CSF levels and the yield of CD34+ hematopoietic progenitors. Peripheral blood stem cells (PBSCs) were mobilized by chemotherapy followed by G-CSF (5 micrograms/kg) started 24 hours after completion of chemotherapy. PBSCs were collected by daily leukapheresis during G-CSF stimulation once the WBC had recovered to 1.0 x 10(9)/L, with 10 liters of blood processed using a Fenwall CS 3000. G-CSF levels were monitored daily before and after leukapheresis. CD34+ cells from daily leukapheresis collections were determined in 11 patients. Immunophenotyping analyses of CD34+ and non-CD34+ cells for surface antigens CD38+, HLA-DR, CD71+, CD61+ and CD42a+ were performed on these daily leukapheresis. The mean (SD) number of days to neutrophil recovery (NR: > or = 0.5 x 10(9)/L) after stem cell reinfusion was 9.2 (1.92). The corresponding values for platelet recovery (PR: > or = 20 x 10(9) L) were 8.1 (2.39) days. Using multiple regression analyses, the best predictors for NR were: last G-CSF (R2 = 0.21); last G-CSF and CD34+ (R2 = 0.67); last G-CSF, CD34+ and number of chemotherapy cycles (R2 = 0.72).(ABSTRACT TRUNCATED AT 250 WORDS)
mesh_terms: D000328:Adult; D015703:Antigens, CD / Q000097:blood; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D001792:Blood Platelets / Q000187:drug effects / Q000502:physiology*; D001943:Breast Neoplasms / Q000097:blood / Q000473:pathology / Q000628:therapy*; D003114:Colony-Forming Units Assay; D003131:Combined Modality Therapy; D005260:Female; D018237:Germinoma / Q000097:blood / Q000473:pathology / Q000628:therapy*; D016179:Granulocyte Colony-Stimulating Factor / Q000097:blood* / Q000627:therapeutic use*; D006684:HLA-DR Antigens / Q000097:blood; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D007958:Leukocyte Count; D008223:Lymphoma / Q000097:blood / Q000473:pathology / Q000628:therapy*; D008875:Middle Aged; D009367:Neoplasm Staging; D009504:Neutrophils / Q000187:drug effects / Q000502:physiology*; D010976:Platelet Count; D011237:Predictive Value of Tests; D013234:Stem Cells / Q000473:pathology*
chemical_list: D015703:Antigens, CD; D006684:HLA-DR Antigens; D016179:Granulocyte Colony-Stimulating Factor