The factors controlling stem cell recirculation. II. ACTH-induced
inhibition of migration of hemopoietic stem cells
GI Bezin, RM Khaitov, BB Moroz, RV Petrov and 99 Romashko
Injections of ACTH of prolonged action (twice 1.5 units per mouse) given to
lethally (800 R) irradiated mice with a hind limb shielded to the middle of
the tibia brought about a twofold decrease in the number of spleen
colonies. ACTH injections after sublethal whole-body irradiation (600 R)
did not affect the number of endogenous spleen colonies. ACTH injection of
normal mice brought about a substantial decrease in the CFU content in the
circulating blood at the time of increased 11-hydroxycorticosteroid
concentrations in the plasma. The results obtained are interpreted as
inhibition of CFU migration from a shielded area of bone marrow induced by
a high 11-hydroxycorticosteroid content in the plasma that followed ACTH
injections which had no mitostatic effect on CFU proliferation.
Volume 46,
Issue 1,
pp. 79-84,
07/01/1975
Copyright © 1975 by The American Society of Hematology