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Marrow stem cell release in the autorepopulation assay

Abstract

The early migration of stem cells from shielded marrow to an irradiated spleen has been re-evaluated, and the findings have been compared with the results of earlier studies. The composite data reveal a constant rate during the first 24 h after irradiation, with a slope of 1.6 cells per h and an intercept of 2.4. The positive intercept is interpreted to signify an immediate brief perturbation of CFU/sub s/ release. The low concentration of CFU/sub s/ in the bloodstream, despite their continuous migration from the shielded marrow, is indicative of a rapid, and probably greatly increased, blood turnover. Despite the constancy of stem cell seeding, it is not yet possible to determine whether the rate of stem cell release is different in shielded marrow than in normal marrow. The resolution of this question requires more precise information about spleen seeding efficiency in the autorepopulation assay and about the normal turnover rate of stem cells in the bloodstream.
Authors:
Maloney, M A; Patt, H M [1] 
  1. California Univ., San Francisco (USA). Lab. of Radiobiology
Publication Date:
Jan 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-09-389183; EDB-78-110874
Resource Relation:
Journal Name: Exp. Hematol.; (Denmark); Journal Volume: 6
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; BONE MARROW; STEM CELLS; BIOCHEMICAL REACTION KINETICS; CFU; COMPARATIVE EVALUATIONS; PARTIAL BODY IRRADIATION; TIME DEPENDENCE; ANIMAL CELLS; BODY; EXTERNAL IRRADIATION; HEMATOPOIETIC SYSTEM; IRRADIATION; KINETICS; ORGANS; REACTION KINETICS; SOMATIC CELLS; TISSUES; 560121* - Radiation Effects on Cells- External Source- (-1987); 560114 - Radiation Effects on Biochemicals- In Animals- (-1987)
OSTI ID:
7086870
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: EXHEB
Submitting Site:
INIS
Size:
Pages: 227-232
Announcement Date:
Aug 01, 1978

Citation Formats

Maloney, M A, and Patt, H M. Marrow stem cell release in the autorepopulation assay. Denmark: N. p., 1978. Web.
Maloney, M A, & Patt, H M. Marrow stem cell release in the autorepopulation assay. Denmark.
Maloney, M A, and Patt, H M. 1978. "Marrow stem cell release in the autorepopulation assay." Denmark.
@misc{etde_7086870,
title = {Marrow stem cell release in the autorepopulation assay}
author = {Maloney, M A, and Patt, H M}
abstractNote = {The early migration of stem cells from shielded marrow to an irradiated spleen has been re-evaluated, and the findings have been compared with the results of earlier studies. The composite data reveal a constant rate during the first 24 h after irradiation, with a slope of 1.6 cells per h and an intercept of 2.4. The positive intercept is interpreted to signify an immediate brief perturbation of CFU/sub s/ release. The low concentration of CFU/sub s/ in the bloodstream, despite their continuous migration from the shielded marrow, is indicative of a rapid, and probably greatly increased, blood turnover. Despite the constancy of stem cell seeding, it is not yet possible to determine whether the rate of stem cell release is different in shielded marrow than in normal marrow. The resolution of this question requires more precise information about spleen seeding efficiency in the autorepopulation assay and about the normal turnover rate of stem cells in the bloodstream.}
journal = []
volume = {6}
journal type = {AC}
place = {Denmark}
year = {1978}
month = {Jan}
}