PHOSPHATIDYL POLYGLYCEROLS PROLONG LIPOSOME CIRCULATION IN-VIVO

被引:76
作者
MARUYAMA, K [1 ]
OKUIZUMI, S [1 ]
ISHIDA, O [1 ]
YAMAUCHI, H [1 ]
KIKUCHI, H [1 ]
IWATSURU, M [1 ]
机构
[1] DAIICHI PHARMACEUT CO LTD,DEV RES LABS,EDOGAWA KU,TOKYO 134,JAPAN
关键词
PROLONGED CIRCULATION; CIRCULATION TIME; DRUG DELIVERY; LIPOSOME;
D O I
10.1016/0378-5173(94)90407-3
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
To obtain liposomes with longer circulation times in vivo, we newly synthesized dipalmitoylphosphatidylpolyglycerol (DPP-PG). A series of DPP-PGs of different chain lengths was used in this study. The individual derivatives were incorporated into distearoylphosphatidylcholine/cholesterol liposomes (1:1, molar ratio). The effectiveness of DPP-PG derivatives was dependent on the amount and degree of polymerization. Low-polymerized PGs such as diglycerol and tetraglycerol needed a high incorporation rate of 8 mol%, while high-polymerized PGs such as octaglycerol required 4 mol%. The incorporation of 6 mol% of DPP-hexaglycerol was most effective in prolonging the circulation time of liposomes.
引用
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页码:103 / 107
页数:5
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