کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2487224 1114409 2009 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preformulation and pharmacokinetic studies on antalarmin: A novel stress inhibitor
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی اکتشاف دارویی
پیش نمایش صفحه اول مقاله
Preformulation and pharmacokinetic studies on antalarmin: A novel stress inhibitor
چکیده انگلیسی
The preformulation, solubilization and pharmacokinetic evaluation of antalarmin, a stress inhibitor, have been conducted. Antalarmin has a poor water solubility of less than 1 µg/mL and is weakly basic with an experimentally determined pKa of 5.0. Multiple solubilization approaches including pH-control either alone or in combination with cosolvents, surfactants and complexing agents have been investigated. The applicability of lipid-based systems has also been explored. Four formulations, each with a targeted drug loading capacity of 100 mg/mL, show potential for oral administration. Three of these formulations are aqueous solutions (10% ethanol + 40% propylene glycol; 20% cremophor EL; 20% sulfobutylether-β-cyclodextrin) each buffered at pH 1. The fourth formulation is a lipid-based formulation comprising of 20% oleic acid, 40% cremophor EL and 40% Labrasol. No precipitation was observed following dilution of the four formulations with water and enzyme free simulated gastric fluid. However, only the lipid-based formulation successfully resisted drug precipitation following dilution with enzyme free simulated intestinal fluid. Pharmacokinetic analysis conducted in rats revealed that the 20% cremophor EL solution formulation has a fivefold higher oral bioavailability compared to a suspension formulation. The lipid-based formulation resulted in over 12-fold higher bioavailability as compared to the suspension formulation, the highest amongst the formulations examined.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Pharmaceutical Sciences - Volume 98, Issue 1, January 2009, Pages 205-214
نویسندگان
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