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Effects of recombinant canine granulocyte colony-stimulating factor on white blood cell production in clinically normal and neutropenic dogs.
- Source :
-
Journal of the American Veterinary Medical Association [J Am Vet Med Assoc] 1992 Jun 15; Vol. 200 (12), pp. 1957-64. - Publication Year :
- 1992
-
Abstract
- Recombinant canine granulocyte colony-stimulating factor (rcG-CSF) was administered to clinically normal dogs, cyclic-hematopoietic dogs, and dogs undergoing autologous bone marrow transplantation, to determine whether rcG-CSF could be used to stimulate WBC production and function in normal and neutropenic dogs. To the normal dogs, rcG-CSF was administered by SC injection at rates of 1 microgram/kg of body weight, q 12 h; 2 micrograms/kg, q 12 h; or 5 micrograms/kg, q 12 h. A significant dose-dependent increase in the WBC count resulted from the stimulation of bone marrow progenitor cells. The increased WBC count was characterized by mature neutrophilia and monocytosis. Neutrophil myeloperoxidase and phagocytic activity were normal in rcG-CSF-treated normal dogs, demonstrating the production of normal functional neutrophils in response to rcG-CSF treatment. Recombinant canine G-CSF prevented neutropenia and associated clinical signs but did not completely eliminate the cycling of neutrophils in cyclic-hematopoietic dogs when it was administered at rates of 1 microgram/kg, q 12 h, and 2.5 micrograms/kg, q 12 h. The time to bone marrow reconstitution was not decreased in dogs treated with rcG-CSF at a rate of 2.5 micrograms/kg, q 12 h, for 13 days following autologous bone marrow transplantation. On the basis of our findings, we suggest that treatment with rcG-CSF is an effective way to stimulate myelopoiesis in dogs, but that the dose of rcG-CSF required to stimulate WBC production will vary depending on the cause of neutropenia. Recombinant canine G-CSF should be useful in stimulating production and maintaining function of WBC for treatment of clinical diseases seen commonly in veterinary practice.
- Subjects :
- Animals
Blood Cell Count veterinary
Bone Marrow immunology
Bone Marrow Cells
Bone Marrow Transplantation veterinary
Cells, Cultured
Dogs
Dose-Response Relationship, Immunologic
Female
Granulocyte Colony-Stimulating Factor immunology
Hematopoiesis immunology
Leukocyte Count veterinary
Male
Neutropenia therapy
Neutrophils enzymology
Neutrophils immunology
Peroxidase blood
Phagocytosis
Recombinant Proteins immunology
Recombinant Proteins therapeutic use
Dog Diseases therapy
Granulocyte Colony-Stimulating Factor therapeutic use
Leukocytes immunology
Neutropenia veterinary
Subjects
Details
- Language :
- English
- ISSN :
- 0003-1488
- Volume :
- 200
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- Journal of the American Veterinary Medical Association
- Publication Type :
- Academic Journal
- Accession number :
- 1379221