Dissolution Behavior and Gastrointestinal Absorption of Dicumarol from Solid Dispersion Systems of Dicmarol-Polyvinylpyrrolidone and Dicumarol-β-Cyclodextrin
スポンサーリンク
概要
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Solid dispersion systems of dicumarol-polyvinylpyrrolidone (PVP) and dicumarol-β-cyclodextrin (β-CD) were prepared by co-evaporation or freeze-drying of the drug-matrix mixture ammonium solution. Comparative studies were made on in vitro dissolution and in vivo absorption of the solid dispersion systems and dicumarol crystal powder. The dissolution rates of dicumarol were markedly increased in these solid dispersion systems in the pharmacopeial disintegration medium at pH 7.5. In vivo absorption studies were carried out in rabbits by measuring the plasma levels of dicumarol followng the oral administration of the solid dispersion systems and dicumarol crystal powder. The peak levels of the drug were observed at 4-6 h postadministration in the cases of the solid dispersion systems. On the other hand, they were observed at 2-12 h postadmini-stration in the case of dicumarol crystal powder. It appears that the modification of the dissolution characteristics of dicumarol by preparing the solid dispersion systems results in increased bioavailability of dicumarol.
- 公益社団法人日本薬学会の論文
- 1983-04-25
著者
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関川 彬
北海道医療大学薬学部製剤学教室
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高田 昌彦
Faculty Of Pharmaceutical Sciences Health Sciences University Of Hokkaido
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福田 直美
Faculty of Pharmaceutical Sciences, Higashi-Nippon-Gakuen University
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中野 眞汎
Department Of Pharmacy Kumamoto University Hospital
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大谷 恭子
Department Of Pharmacy Hokkaido University Hospital School Of Medicine Hokkaido University:(present
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関川 彬
北海道医療大学 薬学部免疫微生物学教室
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有田 隆一
Department Of Pharmacy Hokkaido University Hospital
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高田 昌彦
Faculty Of Pharmaceutical Sciences Higashi-nippon-gakuen University
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有田 隆一
Department Of Pharmacy Hokkaido University Hospital School Of Medicine Hokkaido University
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中野 眞汎
Kumamoto University Hospital
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福田 直美
Faculty Of Pharmaceutical Sciences Higashi-nippon-gakuen University
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