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标题：Percutaneous Penetration of Ozagrel and the Enhancement Produced by Saturated Fatty Acids
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作者：Taro OGISO ; Kazunori KOIKE ; Masahiro IWAKI 等
期刊名称：Biological and Pharmaceutical Bulletin
印刷版ISSN：0918-6158
电子版ISSN：1347-5215
出版年度：2000
卷号：23
期号：7
页码：844-849
DOI：10.1248/bpb.23.844
出版社：The Pharmaceutical Society of Japan
摘要：The effects of a series of fatty acids on the percutaneous penetration of ozagrel (OZ), a selective thromboxane A₂ synthetase inhibitor, through rat skin and the mechanism by which fatty acids enhance the skin penetration of OZ were examined in vitro. Lauric acid, at the fatty acid : OZ molar ratio of 2 : 1, was the most potent agent as far as increasing the skin penetration was concerned, with a flux 24-fold higher than that without fatty acid. A molar ratio of 3 : 1 also produced a large enhancing effect, comparable with that of a molar ratio of 2 : 1. When the gel formulation with lauric aicd (molar ratio of 2 : 1) was applied to the skin for 6 h, the amount of drug penetrating into the skin was significantly increased compared with that after the formulations without lauric acid and with capric and palmitic acids. However, lauric acid did not change the apparent partition coefficient of OZ between n-heptane and phosphate buffer (pH 7.4). The ¹³C-NMR spectra of OZ was also unaffected by the addition of lauric acid, indicating that a complex or ion pair with lauric acid was not formed. A possible mechanism for the enhancing effect is the increased incorporation of lauric aicd with OZ into the bulk lipid phase of the stratum corneum, where the fatty acid would act as a co-penetrant enhancing passage through the stratum corneum.
关键词：ozagrel;percutaneous penetration;fatty acid enhancement;co-penetrant;rat skin