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Molecules 2015, 20(6), 11345-11356; doi:10.3390/molecules200611345

Characterization and Pharmacokinetic Study of Aprepitant Solid Dispersions with Soluplus®

Department of Pharmacy, Shenyang Pharmaceutical University, No. 103 Wenhua Road, Shenyang 110016, China
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Author to whom correspondence should be addressed.
Academic Editors: Thomas Rades, Holger Grohganz and Korbinian Löbmann
Received: 27 April 2015 / Revised: 28 May 2015 / Accepted: 1 June 2015 / Published: 19 June 2015
(This article belongs to the Collection Poorly Soluble Drugs)
View Full-Text   |   Download PDF [2236 KB, uploaded 19 June 2015]   |  

Abstract

Solid dispersions are a useful approach to improve the dissolution rate and bioavailability of poorly water-soluble active pharmaceutical ingredients (APIs). The aim of this study was to improve the physicochemical properties and bioavailability of a poorly water-soluble aprepitant by preparation of solid dispersions. The solid dispersions were characterized by dissolution, FTIR, XRPD, DSC, SEM and pharmacokinetic studies in rats. The dissolution rate of the aprepitant was significantly increased by solid dispersions, and XRD, DSC, and SEM analysis indicated that the aprepitant existed in an amorphous form within the solid dispersions. The result of dissolution study showed that the dissolution rate of SDs was nearly five-fold faster than aprepitant. FTIR spectrometry suggested the presence of intermolecular hydrogen bonds between the aprepitant and polymer. Pharmacokinetic studies in rats indicated that the degree drug absorption was comparable with that of Emend®. Aprepitant exists in an amorphous state in solid dispersions and the solid dispersions can markedly improve the dissolution and oral bioavailability of the aprepitant. The AUC0–t of the SDs was 2.4-fold that of the aprepitant. In addition, the method and its associated techniques are very easy to carry out. View Full-Text
Keywords: aprepitant; Soluplus®; solid dispersions aprepitant; Soluplus®; solid dispersions
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Liu, J.; Zou, M.; Piao, H.; Liu, Y.; Tang, B.; Gao, Y.; Ma, N.; Cheng, G. Characterization and Pharmacokinetic Study of Aprepitant Solid Dispersions with Soluplus®. Molecules 2015, 20, 11345-11356.

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