DRUG-DELIVERY STUDIES IN CACO-2 MONOLAYERS .3. INTESTINAL TRANSPORT OF VARIOUS VASOPRESSIN ANALOGS IN THE PRESENCE OF LYSOPHOSPHATIDYLCHOLINE

被引：12

作者：

BRONDSTED, H ^{[1
]}

NIELSEN, HM ^{[1
]}

HOVGAARD, L ^{[1
]}

机构：

[1] ROYAL DANISH SCH PHARM,DEPT PHARMACEUT,DK-2100 COPENHAGEN O,DENMARK

来源：

INTERNATIONAL JOURNAL OF PHARMACEUTICS | 1995年 / 114卷 / 02期

关键词：

DDAVP; VASOPRESSIN; INTESTINAL TRANSPORT; ABSORPTION ENHANCER; PHOSPHOLIPID; LYSOPHOSPHATIDYLCHOLINE; CACO-2; CELL CULTURE;

D O I：

10.1016/0378-5173(94)00233-U

中图分类号：

R9 [药学];

学科分类号：

1007 ;

摘要：

The transport of a series of vasopressin and oxytocin analogues with varying lipophilicities was studied in Caco-2 monolayers. Transport was studied across the bare monolayer and after treatment with a phospholipid absorption enhancer, palmitoyl lysophosphatidylcholine. The range in lipophilicity of the analogues, estimated as the capacity factor, was found to be from 0.19 to 3.43. The intrinsic transport of the peptides across Caco-2 monolayers was found to be low. The apparent permeability coefficients, P-app were in the range of 2 x 10(-8)-6 x 10(-7) cm/s. However, peptide transport was significantly greater (P-app in the range of 5 x 10(-6)-2 x 10(-5) cm/s) when facilitated by addition of palmitoyllysaphosphatidylcholine. The results suggest that polypeptide transport across Caco-2 monolayers does not depend on lipophilicity, but that the facilitated transport does depend on the lipophilicity.

引用

页码：151 / 157

页数：7

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