کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2085525 1545378 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Colonoscopic method for estimating the colonic absorption of extended-release dosage forms in dogs
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Colonoscopic method for estimating the colonic absorption of extended-release dosage forms in dogs
چکیده انگلیسی

The purpose of this study was to develop a new method using beagle dogs in order to evaluate the colonic absorption properties of oral extended-release (ER) solid dosage forms. The established method is not only noninvasive and inexpensive but full-sized ER dosage forms are also directly administered to the colons of conscious dogs through the anus with an endoscope and modified bioptome. In the method, it was possible to administer the ER dosage forms into the ascending colon of dogs within 30 s–1 min. The colonic absorption of Voltaren-XR (Diclofenac sodium), Glucophage-XR (metformin), Pacif (morphine hydrochloride), Herbesser-R (diltiazem hydrochloride) and Plendil (felodipine), which are currently on the market, were investigated by this method. The relative bioavailabilities of these ER dosage forms to oral drug solution were 100.3%, 42.5%, 60.6%, 46.3% and 29.8%, respectively. Some of these results reflected the human colonic absorption profiles reported in the literature. This newly developed method could provide researchers with an alternative way to predict the human colon absorption performance of oral ER delivery systems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Pharmaceutics and Biopharmaceutics - Volume 75, Issue 2, June 2010, Pages 238–244
نویسندگان
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