Radioprotection of Mice with Interleukin-1: Relationship to the Number of Erythroid and Granulocyte-Macrophage Colony-Forming Cells
Abstract
This report presents the results of an investigation of changes in the number of erythroid and granulocyte-macrophage colony forming cells (GM-CFC) that had occurred in tissues of normal B6D2F1 mice 20 h after administration of a radioprotective dose (150 ng) of human recombinant interleukin-1 (rIL-1). Neutrophilia in the peripheral blood and changes in the tissue distribution of GM-CFC demonstrated that cells were mobilized from the bone marrow in response to rIL-1 injection. for example, 20 h after rIL-1 injection marrow GM-CFC numbers were 80% of the numbers in bone marrow from saline-injected mice. Associated with this decrease there was a twofold increase in the number of peripheral blood and splenic GM-CFC. Also, as determined by hydroxyurea injection, there was an increase in the number of GM-CFC in S phase of the cell cycle in the spleen, but not in the bone marrow. Data in this report suggest that when compared to the spleen, stimulation of granulopoiesis after rIL-1 injection is delayed in the bone marrow.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1990
- Accession Number
- ADA235471
Entities
People
- Gretchen N. Schwartz
- Myra L. Patchen
- Ruth Neta
- Thomas J. Macvittie
Organizations
- Armed Forces Radiobiology Research Institute