Opportunities for Successful Stabilization of Poor Glass-Forming Drugs: A Stability-Based Comparison of Mesoporous Silica Versus Hot Melt Extrusion Technologies

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Authors
Price, Daniel J.
Nair, Anita
Becker-Baldus, Johanna
Glaubitz, Clemens
Dressman, Jennifer
Saal, Christoph
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Publication date
04.11.2019
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01A - Journal article
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Parent work
Pharmaceutics
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DOI of the original publication
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Volume
11
Issue / Number
11
Pages / Duration
577
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Publisher / Publishing institution
Elsevier
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Abstract
Amorphous formulation technologies to improve oral absorption of poorly soluble active pharmaceutical ingredients (APIs) have become increasingly prevalent. Currently, polymer-based amorphous formulations manufactured by spray drying, hot melt extrusion (HME), or co-precipitation are most common. However, these technologies have challenges in terms of the successful stabilization of poor glass former compounds in the amorphous form. An alternative approach is mesoporous silica, which stabilizes APIs in non-crystalline form via molecular adsorption inside nano-scale pores. In line with these considerations, two poor glass formers, haloperidol and carbamazepine, were formulated as polymer-based solid dispersion via HME and with mesoporous silica, and their stability was compared under accelerated conditions. Changes were monitored over three months with respect to solid-state form and dissolution. The results were supported by solid-state nuclear magnetic resonance spectroscopy (SS-NMR) and scanning electron microscopy (SEM). It was demonstrated that mesoporous silica was more successful than HME in the stabilization of the selected poor glass formers. While both drugs remained non-crystalline during the study using mesoporous silica, polymer-based HME formulations showed recrystallization after one week. Thus, mesoporous silica represents an attractive technology to extend the formulation toolbox to poorly soluble poor glass formers.
Keywords
glass forming ability, hot melt extrusion, mesoporous silica, amorphous stability, supersaturation
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0378-5173
1873-3476
Language
English
Created during FHNW affiliation
Yes
Publication status
Published
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Peer review of the complete publication
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Citation
DITZINGER, Felix, Daniel J. PRICE, Anita NAIR, Johanna BECKER-BALDUS, Clemens GLAUBITZ, Jennifer DRESSMAN, Christoph SAAL und Martin KUENTZ, 2019. Opportunities for Successful Stabilization of Poor Glass-Forming Drugs: A Stability-Based Comparison of Mesoporous Silica Versus Hot Melt Extrusion Technologies. Pharmaceutics. 4 November 2019. Bd. 11, Nr. 11, S. 577. DOI 10.3390/pharmaceutics11110577. Verfügbar unter: https://doi.org/10.26041/fhnw-3607