Recombinant human granulocyte colony-stimulating factor accelerates
hematopoietic recovery after DLA-identical littermate marrow transplants in
dogs
FG Schuening, R Storb, S Goehle, TC Graham, R Hackman, M Mori, LM Souza and FR Appelbaum
Division of Clinical Research, Fred Hutchinson Cancer Research Center,
Seattle, WA 98104.
We studied whether treatment of dogs with recombinant human granulocyte
colony-stimulating factor (rhG-CSF), after 920 cGy total body irradiation
(TBI) and transplantation of 3.3 +/- 1.0 x 10(8) bone marrow cells per
kilogram from a DLA-identical littermate, accelerated hematopoietic
recovery and influenced the incidence of subsequent marrow graft failure or
graft-versus-host disease (GVHD). Ten animals were treated with 100
micrograms rhG-CSF/kg/d from days 1 through 10 after TBI. Results were
compared with those of historical control of 14 dogs not administered
rhG-CSF. Neither group of dogs received GVHD prophylaxis. The median time
to recovery of 1,000 neutrophils/mm3 was 8 days for dogs administered
rhG-CSF compared with 14 days in controls (logrank test: P less than .03).
The median time to reach 100 monocytes/mm3 was 17 days in G-CSF-treated
dogs compared with 49 days in controls (P less than .002). The median time
to attain 500 lymphocytes/mm3 was 15 days versus 31 days, respectively (P
less than .01). The median time to reach 20,000 platelets/mm3 was 26 versus
20 days (P = .68). Graft failure occurred in 1 of 10 G-CSF-treated dogs
versus 2 of 14 controls (two-tailed Fisher's exact test: P = 1.00). GVHD
was seen in 4 of 9 rhG-CSF-treated dogs compared with 1 of 12 controls (P =
.12). Two G-CSF-treated dogs died of GVHD versus none of the controls (P =
.17). No unusual toxicities were seen in dogs receiving rhG-CSF. In
summary, rhG-CSF significantly accelerated recovery of neutrophils,
monocytes, and lymphocytes after DLA-identical littermate marrow
transplantation without altering platelet recovery. Graft failure was not
seen more often than in controls, but there was a trend toward an increased
incidence of GVHD.
Volume 76,
Issue 3,
pp. 636-640,
08/01/1990
Copyright © 1990 by The American Society of Hematology