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  • Title: Effects of recombinant granulocyte colony-stimulating factor (rG-CSF) and recombinant granulocyte-macrophage colony-stimulating factor (rGM-CSF) on acute radiation hematopoietic injury in mice.
    Author: Tanikawa S, Nakao I, Tsuneoka K, Nara N.
    Journal: Exp Hematol; 1989 Sep; 17(8):883-8. PubMed ID: 2475360.
    Abstract:
    We have attempted to evaluate in vivo effects of granulocyte colony-stimulating factor (G-CSF) and granulocyte-macrophage colony-stimulating factor (GM-CSF) on acute radiation hematopoietic injury in mice. BDF1 mice, irradiated with 7.5-Gy x-rays, were injected i.p. twice daily for 10 days with 10(5) U recombinant human G-CSF, 3.75 x 10(5) U recombinant murine GM-CSF, or a combination of both. G-CSF significantly enhanced the recovery of not only peripheral leukocytes but also platelets and hematocrit on days 14 and 21 after irradiation. GM-CSF significantly enhanced the recovery of platelets on day 14 and peripheral leukocytes on day 21. G-CSF markedly enhanced the recovery of spleen colony-forming units (CFU-S), colony-forming units in culture (CFU-C), erythroid burst-forming units (BFU-E), and megakaryocyte colony-forming units (CFU-Meg) both in bone marrow and in the spleen. GM-CSF significantly enhanced the recovery of CFU-Meg in bone marrow on day 14. We found synergistic effects between G-CSF and GM-CSF on CFU-S, CFU-C, and CFU-Meg in the spleen on day 14, although we found antagonistic effects between G-CSF and GM-CSF on CFU-S and CFU-C in bone marrow on day 7, and on platelet counts on day 7. These results indicate that the administration of recombinant G-CSF and GM-CSF may be useful in accelerating hematopoietic recovery in patients with acute radiation hematopoietic injuries.
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