Bilineage response in refractory aplastic anemia patients following long-term administration of recombinant human granulocyte colony-stimulating factor.
5 patients with refractory aplastic anemia (AA) received long-term administration (2-11 + months) of recombinant human G-CSF (rhG-CSF) in doses from 250-500 micrograms/body/day by intravenous infusion or 75-300 micrograms/body/d by subcutaneous injection. All 5 evaluable patients showed a substantial increase in absolute neutrophil count (ANC) with a recovery of myeloid components in the bone marrow after 1 to 2 months of treatment. Interestingly, 2 out of the 5 patients showed a dramatic improvement in severe anemia after 2 to 4 months of treatment accompanying a recovery of erythroid components in the bone marrow. In addition, there was no serious infection before or during therapy. Long-term administration of rhG-CSF was well tolerated because of its minimal toxicity. Clonal assay revealed a recovery of myeloid progenitors in all patients and a recovery of erythroid progenitors in 3 out of the 5 patients. These results suggest that long-term administration of rhG-CSF at least mobilizes residual myeloid as well as erythroid progenitor cells and induces a bilineage response in severe refractory AA.
Sonoda
Y
Y
Department of Hygiene, Kyoto Prefectural University of Medicine, Japan.
Yashige
H
H
Fujii
H
H
Tsuda
S
S
Maekawa
T
T
Misawa
S
S
Abe
T
T
D000328:Adult; D000741:Anemia, Aplastic / Q000097:blood / Q000188:drug therapy* / Q000473:pathology; D001772:Blood Cell Count / Q000187:drug effects; D001853:Bone Marrow / Q000473:pathology; D004334:Drug Administration Schedule; D005260:Female; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000008:administration & dosage / Q000627:therapeutic use*; D006801:Humans; D007262:Infusions, Intravenous; D007279:Injections, Subcutaneous; D008297:Male; D008875:Middle Aged; D011994:Recombinant Proteins / Q000008:administration & dosage / Q000627:therapeutic use*; D013997:Time Factors
D011994:Recombinant Proteins; D016178:Granulocyte-Macrophage Colony-Stimulating Factor