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Radioprotective copper (II) (3,5-diisopropylsalicylate)/sub 2/ accelerates recovery of immunocompetence

Conference · · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)
OSTI ID:5317866
Copper (II)(3,5-diisopropylsalicate)/sub 2/ (Cu(II) (3,5-dips)2) afforded significant protection when administered subcutaneously 3 hr before whole body irradiation. At 800 Rad (170 Rad/min) using a cesium-137 irradiator, 86% of mice receiving 80 mg/kg of the copper complex survived while only 40% of irradiated mice receiving only the polyvinyl alcohol vehicle survived. Seven days after irradiation femoral bone marrow cells were depleted by 99.5%. This depletion was evident whether or not mice were treated with Cu(II)(3,5-dips)/sub 2/. The ability of bone marrow cells from copper-treated mice to respond to colony-stimulating factors in mouse lung-conditioned medium recovered rapidly reaching 70% of control values 24 days after irradiation, while vehicle-treated, irradiated mice reached only 10% of control activity after 24 days. The antibody responsiveness (anti-sheep erythrocyte plaque-forming cells) of the copper-treated mice recovered rapidly to control values 42 days after irradiation. Vehicle treated controls reached only 34% of control values 42 days after irradiation. Thus, while Cu(II)(3,5-dips)/sub 2/ treatment did not prevent the damaging effects of irradiation, it did accelerate recovery of immunocompetence.
Research Organization:
Univ. of Arkansas for Medical School, Little Rock
OSTI ID:
5317866
Report Number(s):
CONF-8604222-
Conference Information:
Journal Name: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States) Journal Volume: 45:3
Country of Publication:
United States
Language:
English