[Expansion of peripheral blood progenitors by recombinant human granulocyte colony-stimulating factor].
The levels of peripheral progenitor cells was measured serially after cancer chemotherapy in 4 patients with non-Hodgkin's lymphoma and one patient with rhabdomyosarcoma who received recombinant human granulocyte colony-stimulating factor (rG-CSF). This study was composed of two independent phases: in the first phase, patients received a course of cytotoxic chemotherapy only, and in the second phase, they received the same chemotherapy followed by subcutaneous injection of rG-CSF (2 micrograms/kg/day) for 10-14 days. In the control phase, the levels of granulocyte-macrophage colony-forming units (CFU-GM) and erythroid burst-forming units (BFU-E) per milliliter increased during the early recovery phase, but rG-CSF treatment increased the number of CFU-GM 3 to 18-folds, and the number of BFU-E increased 1.3 to 4.6-folds. An overshoot in the blood progenitor levels occurred at the day 8-10 of rG-CSF administration. And then, the peak of neutrophil count followed 3-5 days later. After the discontinuation of rG-CSF, the number of blood CFU-GM and BFU-E fell rapidly. This results suggest that in vivo expansion of circulating hemopoietic progenitors can be achieved by the administration of rG-CSF, and this approach might be clinically applicable to cancer patients who are a candidate of peripheral blood stem cell autotransplantation.
Department of Pediatrics, Shikoku Cancer Center Hospital.
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T
Shimokawa
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Suzue
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Matsutomo
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K
Okabe
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H
Toki
D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D002675:Child, Preschool; D003131:Combined Modality Therapy; D003520:Cyclophosphamide / Q000008:administration & dosage; D003609:Dactinomycin / Q000008:administration & dosage; D004317:Doxorubicin / Q000008:administration & dosage; D005260:Female; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology*; D018380:Hematopoietic Stem Cell Transplantation; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000188:drug therapy / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D011241:Prednisone / Q000008:administration & dosage; D011994:Recombinant Proteins / Q000494:pharmacology; D014750:Vincristine / Q000008:administration & dosage
D011994:Recombinant Proteins; D016179:Granulocyte Colony-Stimulating Factor; D003609:Dactinomycin; D014750:Vincristine; D004317:Doxorubicin; D003520:Cyclophosphamide; D011241:Prednisone