Radioprotectant Activity of Dicopper(II) Tetrakis(3,5- Diisopropylsalicylate) and Manganese(II) bis(3,5- Diisopropylsalicylate) Alone and in Combination

摘要

Dicopper(ll) tetrakis(3,5-diisopropylsalicylate), (Cu(II)2(3,5-DIPS)4, manganese(II) bis(3,5-diisopropylsalicylate), Mn(II)3,5-DIPS)2 or combinations of them were used to treat gamma-irradIated mice in examining the possibility that combination treatments might be more effective in increasing survival than treatment with either complex alone. Doses of 0, 10, 20, or 40 μmolof each complex per kilogram of body mass were administered subcutaneously in a factorial design before 9 Gy gamna irradiation, an LD90 dose of irradiation. Doses of 0, 10, 20, or 40 μmol Cu(II)2(3, 5-DIPS)4per kg of body mass produced 12, 28, 28, or 36 % survival, respectively, while doses of 0, 10, 20, or 40 μmol (II)3, 5-DIPS)2 per kg of body mass prduced 12, 36, 20, or 24 % survival, respectively. However, the combination of 20μmol Cu(II)2(3, 5-DIPS)4 and 10 μmol Mn(II)(3, 5−DIPS)2 produced the greatest survival, 48 %, which was 300 % greater than vehicle-treated mice (P=0.01). It is concluded that specific combination treatments can be used to maximize survival of lethally irradiated mice.