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Combining in vitro and in silico methods for better prediction of surfactant effects on the absorption of poorly water soluble drugs-a fenofibrate case example
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Pharmacy.
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2014 (English)In: International Journal of Pharmaceutics, ISSN 0378-5173, E-ISSN 1873-3476, Vol. 473, no 1-2, 356-365 p.Article in journal (Refereed) Published
Abstract [en]

The aim of this study was to develop a sensitive and discriminative in vitro-in silico model able to simulate the in vivo performance of three fenofibrate immediate release formulations containing different surfactants. In addition, the study was designed to investigate the effect of dissolution volume when predicting the oral bioavailability of the formulations. In vitro dissolution studies were carried out using the USP apparatus 2 or a mini paddle assembly, containing 1000 mL or 100 mL fasted state biorelevant medium, respectively. In silico simulations of small intestinal absorption were performed using the GI-Sim absorption model. All simulation runs were performed twice adopting either a total small intestinal volume of 533 mL or 105 mL, in order to examine the implication of free luminal water volumes for the in silico predictions. For the tested formulations, the use of a small biorelevant dissolution volume was critical for in vitro-in silico prediction of drug absorption. Good predictions, demonstrating rank order in vivo-in vitro-in silico correlations for C-max, were obtained with in silico predictions utilizing a 105 mL estimate for the human intestinal water content combined with solubility and dissolution data performed in a mini paddle apparatus with 100 mL fasted state simulated media.

Place, publisher, year, edition, pages
2014. Vol. 473, no 1-2, 356-365 p.
Keyword [en]
Immediate release tablets, Surfactants, Clinical data, Mini paddle dissolution, GI-Sim absorption model, In vivo-in vitro-in silico correlation
National Category
Pharmacology and Toxicology
URN: urn:nbn:se:uu:diva-236051DOI: 10.1016/j.ijpharm.2014.06.060ISI: 000342656800039OAI: oai:DiVA.org:uu-236051DiVA: diva2:764313
Available from: 2014-11-18 Created: 2014-11-12 Last updated: 2014-11-18Bibliographically approved

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Sjögren, Erik
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