Application of Liposomes to the Pharmaceutical Modification of the Distribution Characteristics of Drugs in the Rat

概要

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In order to examine the possibility of utilizing liposomes as drug carriers, the fate of ^<14>C-inulin and ^<131>I-insulin entrapped in negatively or positively charged liposomes after intravenous injection was investigated in rats. The clearance rate from plasma of ^<14>C-inulin entrapped in liposomes was faster than that of free ^<14>C-inulin, and decreased with the increase of the liposomal concentration. Further, liposome-entrapped drugs were recovered mainly in the liver, especially in Kupffer cells, as well as the spleen, and such hepatic accumulation was reduced by pretreatment with methyl palmitate to a great extent. From these results, it appears that the large proportion of drugs entrapped in liposomes is delivered into the RES intact and their distribution pattern depended on the liposomal surface properties, but not on the kind of drugs entrapped.
社団法人日本薬学会の論文
1975-12-25