کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2505355 1557487 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Controlled release of donepezil intercalated in smectite clays
موضوعات مرتبط
علوم پزشکی و سلامت داروسازی، سم شناسی و علوم دارویی علوم دارویی
پیش نمایش صفحه اول مقاله
Controlled release of donepezil intercalated in smectite clays
چکیده انگلیسی

The inorganic–organic hybrid for a drug delivery system was successfully realized by intercalating donepezil molecules into smectite clays (laponite XLG, saponite, and montmorillonite). According to the powder XRD patterns, TG profiles, and FT-IR spectra, it was confirmed that donepezil molecules were well stabilized in the interlayer space of clay via mono or double layer stacking. The adsorption amount and molecular structure of donepezil appeared to depend on the cation exchange capacity of the clay, which in turn, tailored the drug release patterns. Especially in the presence of a bulky cationic polymer (Eudragit® E-100) in the release media, the release rate was found to be improved due to its effective replacement with intercalated donepezil molecules. Therefore, to formulate a complete drug delivery system, the hybrids were coated with Eudragit® E-100 using a spray dryer, which also showed great enhancement in the release rate during a short period of time (180 min).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Pharmaceutics - Volume 359, Issues 1–2, 9 July 2008, Pages 198–204
نویسندگان
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