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      Enhancing the dissolution rate of poorly soluble drug Febuxostat using spray dried amorphous solid dispersion technique Translated title: Mejora de la tasa de disolución del fármaco poco soluble Febuxostat utilizando la técnica de dispersión de sólido amorfo secado por aspersión

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          Abstract

          Abstract Introduction: Febuxostat belongs to Biopharmaceutical classification system (BCS) class II drugs, which have low solubility and high permeability. Amorphous solid dispersion is one of the techniques which can be useful to improve solubility and powder characteristics. Objective: To optimize the concentration of hydrophilic and hydrophobic polymers to improve the dissolution rate and solubility of febuxostat tablets. Methods: The amorphous solid dispersion of febuxostat was prepared by spray drying method using Kolliphor P237 (1:2). This amorphous solid dispersion was further used to compress the tablet. To improve solubility and dissolution rate, a full factorial design was applied to optimize the critical concentration of Kollidon SR and hydroxypropyl methyl cellulose (HPMC K4M). The prepared tablets were characterized by pre-compression and post-compression parameters. Result: The rate of drug release was sustained by formulating an amorphous solid dispersion technique. The optimized batch (FSRT-OB) was found to be fit for release average 93.30 % of the drug in sustain release manner up to 12hrs. The release kinetic data suggests that the drug release was controlled by combination of diffusion and chain relaxation mechanism. The optimized concentration for Kollidon SR and HPMC K4Mwas found to be 38.50 % and 7.72 % respectively. Conclusion: Amorphous solid dispersion technique is useful to enhance solubility, dissolution rate, and bioavailability of the Febuxostat tablet.

          Translated abstract

          Resumen Introducción: El febuxostat pertenece a los fármacos clase II del Sistema de Clasificación Biofarmacéutica, los cuales presentan baja solubilidad y alta permeabilidad. La dispersión sólida amorfa es una de las técnicas que pueden ser útiles para mejorar la solubilidad y las características del polvo. Objetivo: optimizar la concentración de polímeros hidrofílicos e hidrofóbicos para mejorar la velocidad de disolución y la solubilidad de las tabletas de febuxostat. Métodos: La dispersión sólida amorfa de febuxostat se preparó mediante el método de secado por aspersión utilizando Kolliphor P237 (1:2). Esta dispersión sólida amorfa se utilizó además para comprimir el comprimido. Para mejorar la solubilidad y la tasa de disolución, se aplicó un diseño factorial completo para optimizar la concentración crítica de KollidonSR e hidroxi propil metil celulosa (HPMC K4M). Los comprimidos preparados se caracterizaron por parámetros de precompresión y poscompresión. Resultados: La velocidad de liberación del fármaco se mantuvo mediante la formulación de una técnica de dispersión sólida amorfa. Se encontró que el lote optimizado (FSRT-OB) era apto para la liberación promedio del 93,30 % del fármaco en forma de liberación sostenida hasta 12 horas. Los datos de la cinética de liberación sugieren que la liberación del fármaco estuvo controlada por una combinación de mecanismo de relajación de cadena y difusión. Se encontró que la concentración optimizada para Kollidon SR y HPMC K4M era 38,50 % y 7,72 % respectivamente. Conclusión: La técnica de dispersión sólida amorfa es útil para mejorar la solubilidad, la velocidad de disolución y la biodisponibilidad de la tableta de Febuxostat.

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          Modeling of drug release from delivery systems based on hydroxypropyl methylcellulose (HPMC).

          The objective of this article is to review the spectrum of mathematical models that have been developed to describe drug release from hydroxypropyl methylcellulose (HPMC)-based pharmaceutical devices. The major advantages of these models are: (i) the elucidation of the underlying mass transport mechanisms; and (ii) the possibility to predict the effect of the device design parameters (e.g., shape, size and composition of HPMC-based matrix tablets) on the resulting drug release rate, thus facilitating the development of new pharmaceutical products. Simple empirical or semi-empirical models such as the classical Higuchi equation and the so-called power law, as well as more complex mechanistic theories that consider diffusion, swelling and dissolution processes simultaneously are presented, and their advantages and limitations are discussed. Various examples of practical applications to experimental drug release data are given. The choice of the appropriate mathematical model when developing new pharmaceutical products or elucidating drug release mechanisms strongly depends on the desired or required predictive ability and accuracy of the model. In many cases, the use of a simple empirical or semi-empirical model is fully sufficient. However, when reliable, detailed information are required, more complex, mechanistic theories must be applied. The present article is a comprehensive review of the current state of the art of mathematical modeling drug release from HPMC-based delivery systems and discusses the crucial points of the most important theories.
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            Pharmaceutical applications of solid dispersion systems.

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              Characterization of curcumin-PVP solid dispersion obtained by spray drying.

              Curcumin, a naturally occurring highly lipophilic molecule has wide range of pharmacological activities. However, its limited aqueous solubility and degradation at alkaline pH restricts its bioavailability. Solid dispersions of curcumin in different ratios with PVP were prepared by spray drying. Physical characterization by SEM, IR, DSC, and XRPD studies, in comparison with corresponding physical mixtures revealed the changes in solid state during the formation of dispersion and justified the formation of high-energy amorphous phase. Dissolution studies of curcumin and its physical mixtures in 0.1 N HCl showed negligible release even after 90 min. Whereas, solid dispersions showed complete dissolution within 30 min. This may aid in improving bioavailability and dose reduction of the drug.
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                Author and article information

                Journal
                ars
                Ars Pharmaceutica (Internet)
                Ars Pharm
                Universidad de Granada (Granada, Granada, Spain )
                2340-9894
                June 2023
                : 64
                : 2
                : 123-138
                Affiliations
                [3] Vadodara Gujarat orgnameSumandeep Vidyapeeth orgdiv1Department of Pharmacy India
                [2] Visnagar Gujarat orgnameSankalchand Patel University orgdiv1Nootan Pharmacy College orgdiv2Department of Pharmaceutics India
                [1] Bharuch Gujarat orgnameLaxminarayandev college of Pharmacy orgdiv1Department of Pharmaceutics India
                Article
                S2340-98942023000200004 S2340-9894(23)06400200004
                10.30827/ars.v64i2.27058
                11eff0c7-c134-4a82-b6df-2da573b7692c

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 07 January 2023
                : 02 March 2023
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 20, Pages: 16
                Product

                SciELO Spain

                Categories
                Original Articles

                dispersión sólida amorfa,Febuxostat,Kollidon SR,HPMC K4M,diseño factorial completo,Amorphous Solid dispersion,Full factorial design

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