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  • Title: [Removal of monomeric 239Pu from bones and liver by liposome-encapsulated pentacin].
    Author: Smirnov AA, Beliaev IK, Ivannikov AT, Il'in LA.
    Journal: Biull Eksp Biol Med; 1985 Oct; 100(10):431-3. PubMed ID: 4052611.
    Abstract:
    Dependence of monomeric 239Pu removal from the liver and skeleton by liposome-encapsulated pentacine on dose and concentration of encapsulated chelate was studied in rats. It has been shown that the liposome-encapsulated pentacine (LP) removed 1.5-2.5 times as much 239Pu as free chelate (FP). Dose-effect dependences were logarithmic. The distinction between LP and FP in 239Pu removal from the liver was maximum when chelate had been used in a dose of 50 mumol/kg, with the dose effect upon injection in a large number of liposomes (200 mumol of lipids/kg) being 1.8 times as high as upon injection in smaller number of liposomes (50 mumol/kg). LP doses varying from 100 to 400 mumol/kg, there were no differences between two types of LP; with a LP dose of 400 mumol/kg its action is a bit stronger than that of the chelate. The distinction between LP and FP in 239Pu removal from the skeleton is the greatest with chelate doses exceeding 100 mumol/kg. The use of liposomes in combination with concentrated chelate solution is more effective. Possible interpretation of the features revealed are discussed.
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