1
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Caporaletti F, Napolitano S. The slow Arrhenius process in small organic molecules. Phys Chem Chem Phys 2024; 26:745-748. [PMID: 38053485 DOI: 10.1039/d3cp05044k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Equilibration, the complex set of molecular rearrangements leading to more stable states, is usually dominated by density fluctuations, occurring through the structural (α-)relaxation, whose timescale quickly increases upon cooling. Growing evidence shows, however, that equilibration can be reached also through an alternative pathway provided by the Slow Arrhenius process (SAP), a molecular mode slower than the structural processes in the liquid state and faster in glass. The SAP, widely observed in polymers, has not yet been reported in small molecules, probably because of the larger experimental difficulties in handling these systems. Here, we report the presence of the SAP in three different molecular glassformers, by investigating these systems in the thin film geometry via dielectric spectroscopy. These results reinforce the idea that the SAP is a universal feature of liquid and glassy dynamics.
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Affiliation(s)
- Federico Caporaletti
- Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Université libre de Bruxelles (ULB), Brussels 1050, Belgium.
| | - Simone Napolitano
- Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Université libre de Bruxelles (ULB), Brussels 1050, Belgium.
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2
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Thoms E, Napolitano S. Enthalpy-entropy compensation in the slow Arrhenius process. J Chem Phys 2023; 159:161103. [PMID: 37888759 DOI: 10.1063/5.0174213] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 10/02/2023] [Indexed: 10/28/2023] Open
Abstract
The Meyer-Neldel compensation law, observed in a wide variety of chemical reactions and other thermally activated processes, provides a proportionality between the entropic and the enthalpic components of an energy barrier. By analyzing 31 different polymer systems, we show that such an intriguing behavior is encountered also in the slow Arrhenius process, a recently discovered microscopic relaxation mode, responsible for several equilibration mechanisms both in the liquid and the glassy state. We interpret this behavior in terms of the multiexcitation entropy model, indicating that overcoming large energy barriers can require a high number of low-energy local excitations, providing a multiphonon relaxation process.
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Affiliation(s)
- Erik Thoms
- Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Université libre de Bruxelles (ULB), Brussels 1050, Belgium
| | - Simone Napolitano
- Laboratory of Polymer and Soft Matter Dynamics, Experimental Soft Matter and Thermal Physics (EST), Université libre de Bruxelles (ULB), Brussels 1050, Belgium
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3
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Shalaev E, Ohtake S, Moussa EM, Searles J, Nail S, Roberts CJ. Accelerated Storage for Shelf-Life Prediction of Lyophiles: Temperature Dependence of Degradation of Amorphous Small Molecular Weight Drugs and Proteins. J Pharm Sci 2023; 112:1509-1522. [PMID: 36796635 DOI: 10.1016/j.xphs.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 02/08/2023] [Accepted: 02/08/2023] [Indexed: 02/17/2023]
Abstract
Prediction of lyophilized product shelf-life using accelerated stability data requires understanding the temperature dependence of the degradation rate. Despite the abundance of published studies on stability of freeze-dried formulations and other amorphous materials, there are no definitive conclusions on the type of pattern one can expect for the temperature dependence of degradation. This lack of consensus represents a significant gap which may impact development and regulatory acceptance of freeze-dried pharmaceuticals and biopharmaceuticals. Review of the literature demonstrates that the temperature dependence of degradation rate constants in lyophiles can be represented by the Arrhenius equation in most cases. In some instances there is a break in the Arrhenius plot around the glass transition temperature or a related characteristic temperature. The majority of the activation energies (Ea), which are reported for various degradation pathways in lyophiles, falls in the range of 8 to 25 kcal/mol. The degradation Ea values for lyophiles are compared with the Ea for relaxation processes and diffusion in glasses, as wells as solution chemical reactions. Collectively, analysis of the literature demonstrates that the Arrhenius equation represents a reasonable empirical tool for analysis, presentation, and extrapolation of stability data for lyophiles, provided that specific conditions are met.
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Affiliation(s)
| | - Satoshi Ohtake
- Pfizer BioTherapeutics Pharmaceutical Sciences, Chesterfield, Missouri 63017 USA
| | - Ehab M Moussa
- Biologics Drug Product Development, AbbVie, North Chicago, IL, USA
| | - Jim Searles
- Pfizer BioTherapeutics Pharmaceutical Sciences, Chesterfield, Missouri 63017 USA
| | | | - Christopher J Roberts
- University of Delaware, Department of Chemical & Biomolecular Engineering, Newark DE 19713 USA
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4
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Zhao P, Han W, Shu Y, Li M, Sun Y, Sui X, Liu B, Tian B, Liu Y, Fu Q. Liquid-liquid phase separation drug aggregate: Merit for oral delivery of amorphous solid dispersions. J Control Release 2023; 353:42-50. [PMID: 36414193 DOI: 10.1016/j.jconrel.2022.11.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022]
Abstract
As a promising strategy, amorphous solid dispersion has been extensively employed in improving the oral bioavailability of insoluble drugs. Despite the numerous advantages, the problems associated with supersaturation stability limit its further application. Recently, the formation and stability of the liquid-liquid phase separation drug aggregate (LLPS-DA) have been found to be vital for supersaturation maintenance. An in-depth review of LLPS-DA was required to further explore the supersaturation maintenance mechanism in vivo. Hence, this study aimed to present a short review to introduce the LLPS-DA, highlight the in vivo advantages for oral administration, and discuss the prospects to help understand the in vivo behavior of LLPS-DA.
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Affiliation(s)
- Peixu Zhao
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Wen Han
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Yecheng Shu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Mo Li
- Liaoning Institute for Drug Control, No. 7 Chongshan West Road, Shenyang 110016, China
| | - Yichi Sun
- School of Pharmacy, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Xiaofan Sui
- Liaoning Institute for Drug Control, No. 7 Chongshan West Road, Shenyang 110016, China
| | - Bingyang Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China
| | - Baocheng Tian
- School of Pharmacy, Binzhou Medical University, No. 346, Guanhai Road, Yantai 264003, China
| | - Yanhua Liu
- Department of Pharmaceutics, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
| | - Qiang Fu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No. 103, Wenhua Road, Shenyang 110016, China.
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5
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Yamaguchi K, Mizoguchi R, Kawakami K, Miyazaki T. Influence of the crystallization tendencies of pharmaceutical glasses on the applicability of the Adam-Gibbs-Vogel and Vogel-Tammann-Fulcher equations in the prediction of their long-term physical stability. Int J Pharm 2022; 626:122158. [PMID: 36058407 DOI: 10.1016/j.ijpharm.2022.122158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 07/27/2022] [Accepted: 08/28/2022] [Indexed: 11/25/2022]
Abstract
Amorphization is a powerful approach for improving the aqueous solubility and bioavailability of poorly water-soluble compounds. However, it can cause chemical and physical instability, the latter of which can lead to crystallization during storage, diminishing the solubility advantage of the amorphous state. As there is no standard method for predicting the physical stability of amorphous materials, a long-term stability study is needed in drug development. This study investigated the correlation between the physical stability of amorphous compounds and molecular mobility based on the assumption that physical stability is governed by the diffusional motion of a molecule. Model compounds were evaluated for crystallization onset time, structural relaxation time, fragility, and fictive temperature. The crystallization onset time of acetaminophen glass correlated with its relaxation time calculated from the Adam-Gibbs-Vogel equation; however, that of felodipine glass correlated with the relaxation time calculated from the Vogel-Tammann-Fulcher equation. The different crystallization tendencies of these compounds can be explained by the differences in the rate limiting steps in their crystallization processes, indicating the importance of distinguishing the critical process associated with crystallization. These findings will be useful for more accurate prediction of long-term physical stability of amorphous materials.
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Affiliation(s)
- Katsutoshi Yamaguchi
- Pharmaceutical Science & Technology Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan.
| | - Ryo Mizoguchi
- Pharmaceutical Science & Technology Labs., Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Kohsaku Kawakami
- Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan; Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Tamaki Miyazaki
- Division of Drugs, National Institute of Health Sciences, 3-25-26 Tonomachi, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan
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6
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Thayumanasundaram S, Venkatesan TR, Ousset A, Van Hollebeke K, Aerts L, Wübbenhorst M, Van den Mooter G. Complementarity of mDSC, DMA, and DRS Techniques in the Study of Tg and Sub- Tg Transitions in Amorphous Solids: PVPVA, Indomethacin, and Amorphous Solid Dispersions Based on Indomethacin/PVPVA. Mol Pharm 2022; 19:2299-2315. [PMID: 35674392 DOI: 10.1021/acs.molpharmaceut.2c00123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Recently, glasses, a subset of amorphous solids, have gained attention in various fields, such as polymer chemistry, optical fibers, and pharmaceuticals. One of their characteristic features, the glass transition temperature (Tg) which is absent in 100% crystalline materials, influences several material properties, such as free volume, enthalpy, viscosity, thermodynamic transitions, molecular motions, physical stability, mechanical properties, etc. In addition to Tg, there may be several other temperature-dependent transitions known as sub-Tg transitions (or β-, γ-, and δ-relaxations) which are identified by specific analytical techniques. The study of Tg and sub-Tg transitions occurring in amorphous solids has gained much attention because of its importance in understanding molecular kinetics, and it requires the combination of conventional and novel characterization techniques. In the present study, three different analytical techniques [modulated differential scanning calorimetry (mDSC), dynamic mechanical analysis (DMA), and dielectric relaxation spectroscopy (DRS)] were used to perform comprehensive qualitative/quantitative characterization of molecular relaxations, miscibility, and molecular interactions present in an amorphous polymer (PVPVA), a model drug (indomethacin, IND), and IND/PVPVA-based amorphous solid dispersions (ASDs). This is the first ever reported DMA study on PVPVA in its powder form, which avoids the contribution of solvent to the mechanical properties when a self-standing polymer film is used. A good correlation between the techniques in determining the Tg value of PVPVA, IND, and IND/PVPVA-based ASDs is established, and the negligible difference (within 10 °C) is attributed to the different material properties assessed in each technique. However, the overall Tg behavior, the decrease in Tg with increase in drug loading in ASDs, is universally observed in all the above-mentioned techniques, which reveals their complementarity. DMA and DRS techniques are used to study the different sub-Tg transitions present in PVPVA, amorphous IND, and IND/PVPVA-based ASDs because these transitions are normally too weak or too broad for mDSC to detect. For IND/PVPVA-based ASDs, both techniques show a shift of sub-Tg transitions (or secondary relaxation peaks) toward the high-temperature region from -140 to -45 °C. Thus, this paper outlines the usage of different solid-state characterization techniques in understanding the different molecular dynamics present in the polymer, drug, and their interactions in ASDs with the integrated information obtained from individual techniques.
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Affiliation(s)
| | - Thulasinath Raman Venkatesan
- Department of Physics and Astronomy, KU Leuven, 3001 Leuven, Belgium.,Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam-Golm, Germany
| | - Aymeric Ousset
- Department of Product Design and Performance, UCB Pharma, 1420 Braine-l'Alleud, Belgium
| | - Kim Van Hollebeke
- Department of Product Design and Performance, UCB Pharma, 1420 Braine-l'Alleud, Belgium
| | - Luc Aerts
- Department of Product Design and Performance, UCB Pharma, 1420 Braine-l'Alleud, Belgium
| | | | - Guy Van den Mooter
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, BE-3000 Leuven, Belgium
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7
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Song Z, Rodríguez-Tinoco C, Mathew A, Napolitano S. Fast equilibration mechanisms in disordered materials mediated by slow liquid dynamics. SCIENCE ADVANCES 2022; 8:eabm7154. [PMID: 35427165 PMCID: PMC9012462 DOI: 10.1126/sciadv.abm7154] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 03/01/2022] [Indexed: 06/14/2023]
Abstract
The rate at which a nonequilibrium system decreases its free energy is commonly ascribed to molecular relaxation processes, arising from spontaneous rearrangements at the microscopic scale. While equilibration of liquids usually requires density fluctuations at time scales quickly diverging upon cooling, growing experimental evidence indicates the presence of a different, alternative pathway of weaker temperature dependence. Such equilibration processes exhibit a temperature-invariant activation energy, on the order of 100 kJ mol-1. Here, we identify the underlying molecular process responsible for this class of Arrhenius equilibration mechanisms with a slow mode (SAP), universally observed in the liquid dynamics of thin films. The SAP, which we show is intimately connected to high-temperature flow, can efficiently drive melts and glasses toward more stable, less energetic states. Our results show that measurements of liquid dynamics can be used to predict the equilibration rate in the glassy state.
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8
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Krishna Kumar NS, Suryanarayanan R. Crystallization Propensity of Amorphous Pharmaceuticals: Kinetics and Thermodynamics. Mol Pharm 2022; 19:472-483. [PMID: 34979803 DOI: 10.1021/acs.molpharmaceut.1c00839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Four model compounds, nifedipine, indomethacin, felodipine, and ketoconazole, all with nearly identical glass transition temperatures, were chosen to study the effects of thermodynamics and molecular mobility on their crystallization propensities. The time and temperature dependence of the crystallization induction time of each compound was determined by differential scanning calorimetry (DSC) and enabled the generation of their time-temperature-transformation (TTT) diagrams. The relaxation times (τα) were measured by dielectric spectroscopy, and the Gibbs free energy (ΔG) and entropy (ΔS) difference between the crystalline and amorphous states were obtained by DSC. The temperature dependence of the crystallization induction time (τ0(T)) is a function of the thermodynamic activation barrier and the frequency of "attempted jumps" (1/τα(T)) to overcome the barrier. Even though the four model compounds exhibited very similar molecular mobility (relaxation time) over a wide range of temperatures, their crystallization propensities were very different. The observed difference in crystallization propensity was explained in terms of the difference in the thermodynamic barrier, and it is correlated to the empirical relation (TΔS3)/ΔG2.
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Affiliation(s)
- N S Krishna Kumar
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Raj Suryanarayanan
- Department of Pharmaceutics, College of Pharmacy, University of Minnesota, Minneapolis, Minnesota 55455, United States
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9
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Sharma J, Singh B, Agrawal AK, Bansal AK. Correlationship of Drug-Polymer Miscibility, Molecular Relaxation and Phase Behavior of Dipyridamole Amorphous Solid Dispersions. J Pharm Sci 2020; 110:1470-1479. [PMID: 33333143 DOI: 10.1016/j.xphs.2020.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 11/30/2020] [Accepted: 12/07/2020] [Indexed: 01/20/2023]
Abstract
In present work, a correlationship among quantitative drug-polymer miscibility, molecular relaxation and phase behavior of the dipyridamole (DPD) amorphous solid dispersions (ASDs), prepared with co-povidone (CP), hydroxypropyl methylcellulose phthalate (HPMC P) and hydroxypropyl methylcellulose acetate succinate (HPMC AS) has been investigated. Miscibility predicted using melting point depression approach for DPD with CP, HPMC P and HPMC AS at 25 °C was 0.93% w/w, 0.55% w/w and 0.40% w/w, respectively. Stretched relaxation time (τβ) for DPD ASDs, measured using modulated differential scanning calorimetry (MDSC) at common degree of undercooling, was in the order of DPD- CP > DPD-HPMC P > DPD-HPMC AS ASDs. Phase behavior of 12 months aged (25 ± 5 °C and 0% RH) spray dried 60% w/w ASDs was tracked using MDSC. Initial ASD samples had homogeneous phase revealed by single glass transition temperature (Tg) in the MDSC. MDSC study of aged ASDs revealed single-phase DPD-CP ASD, amorphous-amorphous and amorphous-crystalline phase separated DPD-HPMC P and DPD-HPMC AS ASDs, respectively. The results were supported by X-ray micro computed tomography and confocal laser scanning microscopy studies. This study demonstrated a profound influence of drug-polymer miscibility on molecular mobility and phase behavior of ASDs. This knowledge can help in designing "physical stable" ASDs.
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Affiliation(s)
- Jagadish Sharma
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Punjab, 160062, India
| | - Balwant Singh
- Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Ashish Kumar Agrawal
- Technical Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai, 400085, India
| | - Arvind K Bansal
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Punjab, 160062, India.
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10
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Wong SN, Chan SWS, Peng X, Xuan B, Lee HW, Tong HHY, Chow SF. Effects of the Glass-Forming Ability and Annealing Conditions on Cocrystallization Behaviors via Rapid Solvent Removal: A Case Study of Voriconazole. Pharmaceutics 2020; 12:E1209. [PMID: 33327381 PMCID: PMC7764899 DOI: 10.3390/pharmaceutics12121209] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 01/16/2023] Open
Abstract
The kinetic entrapment of molecules in an amorphous phase is a common obstacle to cocrystal screening using rapid solvent removal, especially for drugs with a moderate or high glass-forming ability (GFA). The aim of this study was to elucidate the effects of the coformer's GFA and annealing conditions on the nature of amorphous phase transformation to the cocrystal counterpart. Attempts were made to cocrystallize voriconazole (VRC) with four structural analogues, namely fumaric acid (FUM), tartaric acid (TAR), malic acid (MAL), and maleic acid (MAE). The overall GFA of VRC binary systems increased with decreasing glass transition temperatures (Tgs) of these diacids, which appeared as a critical parameter for predicting the cocrystallization propensity such that a high-Tg coformer is more desirable. A new 1:1 VRC-TAR cocrystal was successfully produced via a supercooled-mediated re-cocrystallization process, and characterized by PXRD, DSC, and FTIR. The cocrystal purity against the annealing temperature displayed a bell-shaped curve, with a threshold at 40 °C. The isothermal phase purity improved with annealing and adhered to the Kolmogorov-Johnson-Mehl-Avrami kinetics. The superior dissolution behavior of the VRC-TAR cocrystal could minimize VRC precipitation upon gastric emptying. This study offers a simple but useful guide for efficient cocrystal screening based on the Tg of structurally similar coformers, annealing temperature, and time.
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Affiliation(s)
- Si Nga Wong
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Susan Wing Sze Chan
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Xuexin Peng
- School of Pharmacy, University College London, London WC1N 1AX, UK;
| | - Bianfei Xuan
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Hok Wai Lee
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
| | - Henry H. Y. Tong
- School of Health Sciences and Sports, Macao Polytechnic Institute, Macao, China;
| | - Shing Fung Chow
- Li Ka Shing Faculty of Medicine, Department of Pharmacology and Pharmacy, The University of Hong Kong, Pokfulam, Hong Kong, China; (S.N.W.); (S.W.S.C.); (B.X.); (H.W.L.)
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11
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Pajzderska A, Jenczyk J, Embs JP, Wąsicki J. Exploring molecular reorientations in amorphous and recrystallized felodipine at the microscopic level. RSC Adv 2020; 10:37346-37357. [PMID: 35521258 PMCID: PMC9057141 DOI: 10.1039/d0ra07266d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 09/18/2020] [Indexed: 11/21/2022] Open
Abstract
Molecular reorientations were studied in amorphous, partially and fully recrystallized felodipine (calcium channel blocker, a drug from the family of 1',4-dihydropyridine) using a set of experimental methods: high-resolution solid-state nuclear magnetic resonance (NMR), relaxometry NMR and quasielastic neutron scattering (QENS). The results were compared with molecular dynamics in crystalline felodipine previously investigated [A. Pajzderska, K. Drużbicki, M. A. Gonzalez, J. Jenczyk, J. Mielcarek, J. Wąsicki, Diversity of Methyl Group Dynamics in Felodipine: a DFT Supported NMR and Neutron Scattering Study, CrystEngComm, 2018, 20, 7371-7385]. The kinetics of the recrystallization was also studied. The most stable sample was the sample stored in a closed ampoule (at room temperature, in 0% RH) and its complete recrystallization lasted 105 days. In the fully recrystallized sample, the same molecular reorientation identified in the crystalline form was detected, so reorientations of all methyl groups and the ethyl ester fragment. In the partially recrystallized sample, static disorder caused by the two positions of both side chains was revealed. In the amorphous sample the reorientation of all methyl groups was analyzed and the distribution of correlation times and energy barriers connected with the loss of long-range ordering and disorder of side chains were analyzed. Additionally, inhibition of reorientation in the ethyl ester fragment was observed.
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Affiliation(s)
- A Pajzderska
- Faculty of Physics, Adam Mickiewicz University Uniwersytetu Poznańskiego 2 61-614 Poznań Poland
| | - J Jenczyk
- NanoBioMedical Centre, Adam Mickiewicz University Wszechnicy Piastowskiej 3 61-614 Poznań Poland
| | - J P Embs
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut 5232 Villigen Switzerland
| | - J Wąsicki
- Faculty of Physics, Adam Mickiewicz University Uniwersytetu Poznańskiego 2 61-614 Poznań Poland .,NanoBioMedical Centre, Adam Mickiewicz University Wszechnicy Piastowskiej 3 61-614 Poznań Poland
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12
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Raman imaging of amorphous-amorphous phase separation in small molecule co-amorphous systems. Eur J Pharm Biopharm 2020; 155:49-54. [PMID: 32795500 DOI: 10.1016/j.ejpb.2020.08.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 06/01/2020] [Accepted: 08/09/2020] [Indexed: 11/21/2022]
Abstract
Many new active pharmaceutical ingredients (API) undergoing development have low permeabilities or low aqueous solubilities. However, the amorphous state is usually more soluble than its crystalline counterpart. The amorphous state has a higher Gibb's free energy, which can improve the apparent solubility but decrease the stability since the amorphous state tends to transform to the more stable crystalline form. Before recrystallization, a co-amorphous binary mixture's ingredients have to undergo a phase separation. The aim of this study was to obtain a better understanding of the amorphous-amorphous phase separation in co-amorphous binary mixtures and test the suitability of imaging Raman spectroscopy for detecting this phenomenon. To study the phase separation, we prepared three different 50:50 mass ratio binary mixtures of APIs: paracetamol-terfenadine, (PAR-TRF), paracetamol-indomethacin (PAR-IMC) and terfenadine-indomethacin (TRF-IMC). The binary mixtures were amorphized with melt-quenching and stored above their glass transition temperature (Tg) to monitor their phase separation. Thermal degradation was determined with a high performance liquid chromatography (HPLC) method to ensure that melt-quenching did not cause any thermal degradation of the molecules. Thermodynamic attributes (crystallization tendency, melting point (Tm) and Tg) were measured with differential scanning calorimetry (DSC) to ensure that the co-amorphous systems transformed to the amorphous state and remained amorphous after cooling and reheating. Phase separation was studied from the surface and cross-section (CS) with Raman imaging to examine if it occurred more on the surface than in the bulk. The Raman spectra were analyzed with principal component analysis (PCA) and Contour plots were produced from the PCA-score values to visualize concentration differences in the mixtures. The results showed that API vs API concentrations increased as a function of time in both surface and CS images before crystallization. This suggests that Raman imaging is a suitable technique to detect the phase separation phenomena in small molecule co-amorphous binary mixtures.
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13
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Huang Y, Ma M, Guo Y. Melt crystallization and segmental dynamics of poly(ethylene oxide) confined in a solid electrolyte composite. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20190095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yage Huang
- University of Michigan – Shanghai Jiao Tong University Joint Institute Shanghai 200240 China
| | - Mingchao Ma
- University of Michigan – Shanghai Jiao Tong University Joint Institute Shanghai 200240 China
| | - Yunlong Guo
- University of Michigan – Shanghai Jiao Tong University Joint Institute Shanghai 200240 China
- The State Key Lab of Metal Matrix Composites Shanghai 200240 China
- School of Materials Science and EngineeringShanghai Jiao Tong University Shanghai 200240 China
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14
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Belozerova NM, Bilski P, Jarek M, Jenczyk J, Kichanov SE, Kozlenko DP, Mielcarek J, Pajzderska A, Wąsicki J. Exploring the molecular reorientations in amorphous rosuvastatin calcium. RSC Adv 2020; 10:33585-33594. [PMID: 35515032 PMCID: PMC9056734 DOI: 10.1039/d0ra06108e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 08/29/2020] [Indexed: 01/11/2023] Open
Abstract
Molecular reorientations in rosuvastatin calcium, a drug that is widely used to prevent cardiovascular disease, were explored thoroughly by means of solid state nuclear magnetic resonance (1H and 13C NMR) combined with calculations of steric hindrances. The experimental results reveal rich internal reorientational dynamics. All relaxation processes were tested in a broad range of temperatures and described in terms of their type and the associated energy barriers. The internal molecular mobility of rosuvastatin calcium can be associated with the reorientational dynamics of four methyl groups, accompanied by reorientation of the isopropyl group. The energy barriers of methyl and isopropyl group reorientation depended on the type of E/Z isomers, while the water content also had a strong influence on the dynamics of the isopropyl group. In the paper, a consistent picture of the molecular dynamics is provided, facilitating our understanding of molecular mobility in this important pharmaceutical solid. Molecular reorientations in rosuvastatin calcium, a drug that is widely used to prevent cardiovascular disease, were explored thoroughly by means of solid state nuclear magnetic resonance (1H, 13C NMR) combined with calculations of steric hindrances.![]()
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Affiliation(s)
- N. M. Belozerova
- Frank Laboratory of Neutron Physics
- Joint Institute for Nuclear Research
- Russia
| | - P. Bilski
- Frank Laboratory of Neutron Physics
- Joint Institute for Nuclear Research
- Russia
- Faculty of Physics
- Adam Mickiewicz University
| | - M. Jarek
- NanoBioMedical Centre
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - J. Jenczyk
- NanoBioMedical Centre
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - S. E. Kichanov
- Frank Laboratory of Neutron Physics
- Joint Institute for Nuclear Research
- Russia
| | - D. P. Kozlenko
- Frank Laboratory of Neutron Physics
- Joint Institute for Nuclear Research
- Russia
| | - J. Mielcarek
- Department of Inorganics and Analytical Chemistry
- Poznań University of Medical Sciences
- 60-780 Poznań
- Poland
| | - A. Pajzderska
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - J. Wąsicki
- Faculty of Physics
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
- NanoBioMedical Centre
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15
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Lapuk S, Mukhametzyanov T, Schick C, Gerasimov A. Kinetic stability of amorphous dipyridamole: A fast scanning calorimetry investigation. Int J Pharm 2020; 574:118890. [DOI: 10.1016/j.ijpharm.2019.118890] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 01/10/2023]
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16
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Dudognon E, Bama JA, Affouard F. Molecular Mobility of Terfenadine: Investigation by Dielectric Relaxation Spectroscopy and Molecular Dynamics Simulation. Mol Pharm 2019; 16:4711-4724. [PMID: 31589458 DOI: 10.1021/acs.molpharmaceut.9b00877] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The molecular mobility of an amorphous active pharmaceutical ingredient, terfenadine, was carefully investigated by dielectric relaxation spectroscopy and molecular dynamics simulation for the first time. Comprehensive characterization on a wide frequency (10-2 to 109 Hz) and temperature (300 K) range highlights the fragile nature of this good glass-former (m = 112) and the relatively large nonexponentiality of the main relaxation (βKWW = 0.53 ± 0.01). In the glassy state, a particularly broad secondary relaxation of intramolecular origin is evidenced. Terfenadine is a flexible molecule, and from molecular dynamics simulation, a clear link is established between the flexibility of the central part of the molecule (carrying, on the one side, the nitrogen group, and on the other side, the OH group) and the distribution of dipole moments, which explains that broadness. Terfenadine is one of the very few cases for which the molecular mobility of the glass obtained by the quench of the melt or by milling can be compared. From the present study, no major difference in terms of molecular mobility is found between these two glasses. However, terfenadine amorphized by milling (for 1-20 h) clearly shows a lower stability than the quenched liquid as we observed its recrystallization upon heating. Interestingly, it is shown that this recrystallization upon heating is not complete and that the 1-2% of the remaining amorphous phase has an original behavior. Indeed, it exhibits an enhanced main mobility induced by an autoconfinement effect created by the surrounding crystalline phase.
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Affiliation(s)
- Emeline Dudognon
- Univ. Lille , CNRS, INRA, ENSCL, UMR 8207-UMET-Unité Matériaux Et Transformations , F-59000 Lille , France
| | - Jeanne-Annick Bama
- Univ. Lille , CNRS, INRA, ENSCL, UMR 8207-UMET-Unité Matériaux Et Transformations , F-59000 Lille , France
| | - Frédéric Affouard
- Univ. Lille , CNRS, INRA, ENSCL, UMR 8207-UMET-Unité Matériaux Et Transformations , F-59000 Lille , France
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17
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Kothari S, Vippagunta RR. Predicting the Physical Stability of Amorphous Tenapanor Hydrochloride Using Local Molecular Structure Analysis, Relaxation Time Constants, and Molecular Modeling. Mol Pharm 2019; 16:943-951. [PMID: 30699296 DOI: 10.1021/acs.molpharmaceut.8b00853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The conformational flexibility of organic molecules introduces more structural options for crystallization to occur but has potential complications, such as, reduced crystallization tendency and conformational polymorphism. Although a variety of energetically similar conformers could be anticipated, it is extremely difficult to predict the crystal conformation for conformationally flexible molecules. The present study investigates differences in thermodynamic parameters for the free base, c-FB, and an amorphous dihydrochloride salt, a-Di-HCl, of a conformationally flexible drug substance, tenapanor (RDX5791). A variety of complementary techniques such as, thermal analysis, powder X-ray diffraction (PXRD), and molecular modeling were used to assess the thermodynamic properties and the propensity of crystallization for a-FB and a-Di-HCl, tenapanor. Molecular modeling and total scattering measurements suggested that the a-Di-HCl salt exists in an open elongated state with local 1D stacking, which extends only to the first nearest neighbor, while the a-FB shows local stacking extending to the third nearest neighbor. The overall relaxation behavior, which typically is an indicator for physical stability, as measured by modulated temperature differential scanning calorimetry and PXRD suggested a nontypical dual relaxation process for the dihydrochloride salt form. The first relaxation was fast and occurred on warming from the quench conditions without any thermal annealing, while the second relaxation step followed a more traditional glass relaxation model, exhibiting an infinite relaxation time. Similar analysis for the a-FB suggested a comparatively shorter relaxation time (about 19 days) that results in its rapid crystallization. This observation is further validated with the extensive amount of physical stability data collected for the a-Di-HCl salt form of tenapanor under accelerated and stress stability conditions, as well as long-term storage for more than 3 years that show no change in its amorphous state.
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Affiliation(s)
- Sanjeev Kothari
- Pharmaceutical Chemistry and Formulations , Ardelyx , 34175 Ardenwood Blvd , Fremont , California 94555 , United States
| | - Radha R Vippagunta
- Pharmaceutical Chemistry and Formulations , Ardelyx , 34175 Ardenwood Blvd , Fremont , California 94555 , United States
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18
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Correlation between molecular dynamics and physical stability of two milled anhydrous sugars: Lactose and sucrose. Int J Pharm 2018; 551:184-194. [PMID: 30223078 DOI: 10.1016/j.ijpharm.2018.09.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/12/2018] [Accepted: 09/12/2018] [Indexed: 11/24/2022]
Abstract
The process of milling often results in amorphization and the physical stability of amorphous phase is linked with its molecular dynamics. This study focuses on a propensity of two disaccharides (lactose and sucrose) to amorphize on ball milling and the stability of the resultant amorphous phase. The amorphous content in milled sugars is estimated by Differential Scanning Calorimetry (DSC) and the stability was measured in terms of the tendency to recrystallize by Broadband Dielectric Spectroscopy (BDS). The results show that the amorphous content increases with milling time and is greater for lactose than sucrose. At the same degree of amorphization, sucrose recrystallize at temperature ∼15 °C higher than lactose, indicating higher stability. The molecular dynamics (beta relaxation process), suggest that milled sucrose is more stable with higher activation energy (∼9 kJ mol-1) than that of lactose. The moisture content of amorphous phase also impacts its molecular dynamics in terms of increase in activation energy as the moisture decrease with increasing the milling times. The study suggests a greater stability of amorphous sucrose and susceptibility of milled lactose to recrystallize, however, on extended milling when the moisture content decreases, lactose was seen to become relatively more stable.
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19
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Bulk dynamics of the thermoresponsive random copolymer of di(ethylene glycol) methyl ether methacrylate (MEO2MA) and oligo(ethylene glycol) methyl ether methacrylate (OEGMA). POLYMER 2018. [DOI: 10.1016/j.polymer.2018.06.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Safna Hussan KP, Thayyil MS, Deshpande SK, Jinitha TV, Manoj K, Ngai KL. Molecular dynamics, physical and thermal stability of neat amorphous amlodipine besylate and in binary mixture. Eur J Pharm Sci 2018; 119:268-278. [PMID: 29702233 DOI: 10.1016/j.ejps.2018.04.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/18/2018] [Accepted: 04/20/2018] [Indexed: 12/14/2022]
Abstract
In this paper, a stable amorphous solid dispersion of an antihypertensive drug, amlodipine besylate (AMB) was prepared by entrapping it in a polymer matrix, polyvinyl pyrrollidone, in different weight ratios (AMB/PVP 05:95, 10:90, 20:80, 30:70). The glass forming ability of all binary dispersions were studied by means of differential scanning calorimetry and found good correlation between experimental Tg and Fox Flory's prediction. By considering the daily dosage limit of 5 mg, a weight ratio of 05:95 was further considered for the study. The structures of neat and binary of AMB were characterized by density functional theory, Fourier transform infrared spectroscopy, Fourier transform Raman spectroscopy and UV-visible spectroscopy. Further, detailed molecular dynamics of both pure and binary were investigated using broadband dielectric spectroscopy to judge the physical stability of the amorphous dispersions. Translation-rotation coupling of AMB possibly explains the dual conductivity and dipolar nature of the secondary relaxation in neat AMB. Thus, the binary dispersion of AMB with commercially acceptable weight ratio with strong glass forming behaviour and better shelf life was prepared and characterized for practical applications.
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Affiliation(s)
- K P Safna Hussan
- Department of Physics, University of Calicut, Malappuram, 673635, Kerala, India.
| | | | - S K Deshpande
- UGC-DAE Consortium for Scientific Research, Mumbai Centre, BARC, Mumbai, 40085, India
| | - T V Jinitha
- Department of Chemistry, University of Calicut, Malappuram, 673635, Kerala, India
| | - K Manoj
- College of Pharmaceutical Sciences, Govt. Medical College, Kozhikode, 673008, Kerala, India
| | - K L Ngai
- CNR-IPCF, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy
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21
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Banda A, Manchanda A, Zhang W, Alba GM, Nagapudi K. Comparative Assessment of Miniaturized Screening Approaches for Selection of Polymers for Amorphous Drug Stabilization. J Pharm Sci 2018; 107:897-908. [DOI: 10.1016/j.xphs.2017.11.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/02/2017] [Accepted: 11/07/2017] [Indexed: 12/14/2022]
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22
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Ruiz GN, Romanini M, Barrio M, Tamarit JL, Pardo LC, Macovez R. Relaxation Dynamics vs Crystallization Kinetics in the Amorphous State: The Case of Stiripentol. Mol Pharm 2017; 14:3636-3643. [DOI: 10.1021/acs.molpharmaceut.7b00399] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guadalupe N. Ruiz
- Grup
de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
| | - Michela Romanini
- Grup
de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
| | - María Barrio
- Grup
de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
| | - Josep Ll. Tamarit
- Grup
de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
| | - Luis C. Pardo
- Grup
de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
| | - Roberto Macovez
- Grup
de Caracterització de Materials, Departament de Física, Universitat Politècnica de Catalunya, EEBE, Campus Diagonal-Besòs, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
- Barcelona Research Center in Multiscale Science and Engineering, Avenida Eduard Maristany 10-14, E-08019 Barcelona, Spain
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23
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Viel Q, Delbreilh L, Coquerel G, Petit S, Dargent E. Molecular Mobility of an Amorphous Chiral Pharmaceutical Compound: Impact of Chirality and Chemical Purity. J Phys Chem B 2017; 121:7729-7740. [DOI: 10.1021/acs.jpcb.7b05667] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Quentin Viel
- INSA Rouen, CNRS, Groupe de Physique des Matériaux, and ‡Sciences et
Méthodes Séparatives, Normandie Univ, UNIROUEN Normandie, 76000 Rouen, France
| | - Laurent Delbreilh
- INSA Rouen, CNRS, Groupe de Physique des Matériaux, and ‡Sciences et
Méthodes Séparatives, Normandie Univ, UNIROUEN Normandie, 76000 Rouen, France
| | - Gérard Coquerel
- INSA Rouen, CNRS, Groupe de Physique des Matériaux, and ‡Sciences et
Méthodes Séparatives, Normandie Univ, UNIROUEN Normandie, 76000 Rouen, France
| | - Samuel Petit
- INSA Rouen, CNRS, Groupe de Physique des Matériaux, and ‡Sciences et
Méthodes Séparatives, Normandie Univ, UNIROUEN Normandie, 76000 Rouen, France
| | - Eric Dargent
- INSA Rouen, CNRS, Groupe de Physique des Matériaux, and ‡Sciences et
Méthodes Séparatives, Normandie Univ, UNIROUEN Normandie, 76000 Rouen, France
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24
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Szczurek J, Rams-Baron M, Knapik-Kowalczuk J, Antosik A, Szafraniec J, Jamróz W, Dulski M, Jachowicz R, Paluch M. Molecular Dynamics, Recrystallization Behavior, and Water Solubility of the Amorphous Anticancer Agent Bicalutamide and Its Polyvinylpyrrolidone Mixtures. Mol Pharm 2017; 14:1071-1081. [PMID: 28231007 DOI: 10.1021/acs.molpharmaceut.6b01007] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this paper, we investigated the molecular mobility and physical stability of amorphous bicalutamide, a poorly water-soluble drug widely used in prostate cancer treatment. Our broadband dielectric spectroscopy measurements and differential scanning calorimetry studies revealed that amorphous BIC is a moderately fragile material with a strong tendency to recrystallize from the amorphous state. However, mixing the drug with polymer polyvinylpyrrolidone results in a substantial improvement of physical stability attributed to the antiplasticizing effect governed by the polymer additive. Furthermore, IR study demonstrated the existence of specific interactions between the drug and excipient. We found out that preparation of bicalutamide-polyvinylpyrrolidone mixture in a 2-1 weight ratio completely hinder material recrystallization. Moreover, we determined the time-scale of structural relaxation in the glassy state for investigated materials. Because molecular mobility is considered an important factor governing crystallization behavior, such information was used to approximate the long-term physical stability of an amorphous drug and drug-polymer systems upon their storage at room temperature. Moreover, we found that such systems have distinctly higher water solubility and dissolution rate in comparison to the pure amorphous form, indicating the genuine formulation potential of the proposed approach.
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Affiliation(s)
- Justyna Szczurek
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Marzena Rams-Baron
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Justyna Knapik-Kowalczuk
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Agata Antosik
- Jagiellonian University , Faculty of Pharmacy, Department of Pharmaceutical Technology and Biopharmaceutics, Medyczna 9, 30-688 Kraków, Poland
| | - Joanna Szafraniec
- Jagiellonian University , Faculty of Pharmacy, Department of Pharmaceutical Technology and Biopharmaceutics, Medyczna 9, 30-688 Kraków, Poland
| | - Witold Jamróz
- Jagiellonian University , Faculty of Pharmacy, Department of Pharmaceutical Technology and Biopharmaceutics, Medyczna 9, 30-688 Kraków, Poland
| | - Mateusz Dulski
- Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland.,Institute of Materials Science, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Renata Jachowicz
- Jagiellonian University , Faculty of Pharmacy, Department of Pharmaceutical Technology and Biopharmaceutics, Medyczna 9, 30-688 Kraków, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland.,Silesian Center for Education and Interdisciplinary Research , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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25
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Chang R, Fu Q, Li Y, Wang M, Du W, Chang C, Zeng A. Crystallization and relaxation dynamics of amorphous loratadine under different quench-cooling temperatures. CrystEngComm 2017. [DOI: 10.1039/c6ce01645f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Schammé B, Mignot M, Couvrat N, Tognetti V, Joubert L, Dupray V, Delbreilh L, Dargent E, Coquerel G. Molecular Relaxations in Supercooled Liquid and Glassy States of Amorphous Quinidine: Dielectric Spectroscopy and Density Functional Theory Approaches. J Phys Chem B 2016; 120:7579-92. [PMID: 27391029 DOI: 10.1021/acs.jpcb.6b04242] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
In this article, we conduct a comprehensive molecular relaxation study of amorphous Quinidine above and below the glass-transition temperature (Tg) through broadband dielectric relaxation spectroscopy (BDS) experiments and theoretical density functional theory (DFT) calculations, as one major issue with the amorphous state of pharmaceuticals is life expectancy. These techniques enabled us to determine what kind of molecular motions are responsible, or not, for the devitrification of Quinidine. Parameters describing the complex molecular dynamics of amorphous Quinidine, such as Tg, the width of the α relaxation (βKWW), the temperature dependence of α-relaxation times (τα), the fragility index (m), and the apparent activation energy of secondary γ relaxation (Ea-γ), were characterized. Above Tg (> 60 °C), a medium degree of nonexponentiality (βKWW = 0.5) was evidenced. An intermediate value of the fragility index (m = 86) enabled us to consider Quinidine as a glass former of medium fragility. Below Tg (< 60 °C), one well-defined secondary γ relaxation, with an apparent activation energy of Ea-γ = 53.8 kJ/mol, was reported. From theoretical DFT calculations, we identified the most reactive part of Quinidine moieties through exploration of the potential energy surface. We evidenced that the clearly visible γ process has an intramolecular origin coming from the rotation of the CH(OH)C9H14N end group. An excess wing observed in amorphous Quinidine was found to be an unresolved Johari-Goldstein relaxation. These studies were supplemented by sub-Tg experimental evaluations of the life expectancy of amorphous Quinidine by X-ray powder diffraction and differential scanning calorimetry. We show that the difference between Tg and the onset temperature for crystallization, Tc, which is 30 K, is sufficiently large to avoid recrystallization of amorphous Quinidine during 16 months of storage under ambient conditions.
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Affiliation(s)
- Benjamin Schammé
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France.,AMME-LECAP EA 4528 International Lab, Avenue de l'Université, BP12, Normandie Univ, Université de Rouen Normandie , 76801 St Etienne du Rouvray, France
| | - Mélanie Mignot
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
| | - Nicolas Couvrat
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
| | - Vincent Tognetti
- COBRA UMR 6014 and FR 3038, Normandie Univ, Université de Rouen, INSA Rouen, CNRS , F-76821 Mont Saint Aignan, Cedex, France
| | - Laurent Joubert
- COBRA UMR 6014 and FR 3038, Normandie Univ, Université de Rouen, INSA Rouen, CNRS , F-76821 Mont Saint Aignan, Cedex, France
| | - Valérie Dupray
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
| | - Laurent Delbreilh
- AMME-LECAP EA 4528 International Lab, Avenue de l'Université, BP12, Normandie Univ, Université de Rouen Normandie , 76801 St Etienne du Rouvray, France
| | - Eric Dargent
- AMME-LECAP EA 4528 International Lab, Avenue de l'Université, BP12, Normandie Univ, Université de Rouen Normandie , 76801 St Etienne du Rouvray, France
| | - Gérard Coquerel
- Normandie Univ, Laboratoire SMS - EA3233, Univ Rouen , F-76821 Mont Saint Aignan, France
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27
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Mehta M, Ragoonanan V, McKenna GB, Suryanarayanan R. Correlation between Molecular Mobility and Physical Stability in Pharmaceutical Glasses. Mol Pharm 2016; 13:1267-77. [DOI: 10.1021/acs.molpharmaceut.5b00853] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mehak Mehta
- Department
of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Vishard Ragoonanan
- Department
of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Gregory B. McKenna
- Department
of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Raj Suryanarayanan
- Department
of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
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28
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Jensen MH, Alba-Simionesco C, Niss K, Hecksher T. A systematic study of the isothermal crystallization of the mono-alcohol n-butanol monitored by dielectric spectroscopy. J Chem Phys 2016; 143:134501. [PMID: 26450317 DOI: 10.1063/1.4931807] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Isothermal crystallization of the mono-hydroxyl alcohol n-butanol was studied with dielectric spectroscopy in real time. The crystallization was carried out using two different sample cells at 15 temperatures between 120 K and 134 K. Crystallization is characterized by a decrease of the dielectric intensity. In addition, a shift in relaxation times to shorter times was observed during the crystallization process for all studied temperatures. The two different sample environments induced quite different crystallization behaviors, consistent and reproducible over all studied temperatures. An explanation for the difference was proposed on the background of an Avrami analysis and a Maxwell-Wagner analysis. Both types of analysis suggest that the morphology of the crystal growth changes from a higher dimension to a lower at a point during the crystallization. More generally, we conclude that a microscopic interpretation of crystallization measurements requires multiple probes, sample cells, and protocols.
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Affiliation(s)
- M H Jensen
- Department of Sciences, DNRF Centre Glass and Time, IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - C Alba-Simionesco
- Laboratoire Léon Brillouin, CNRS CEA -UMR 12, DSM IRAMIS LLB CEA Saclay, 91191 Gif-sur-Yvette Cedex, France
| | - K Niss
- Department of Sciences, DNRF Centre Glass and Time, IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - T Hecksher
- Department of Sciences, DNRF Centre Glass and Time, IMFUFA, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
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29
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Weers JG, Miller DP. Formulation Design of Dry Powders for Inhalation. J Pharm Sci 2015; 104:3259-88. [DOI: 10.1002/jps.24574] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 06/11/2015] [Accepted: 06/12/2015] [Indexed: 11/09/2022]
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30
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Nurzyńska K, Booth J, Roberts CJ, McCabe J, Dryden I, Fischer PM. Long-Term Amorphous Drug Stability Predictions Using Easily Calculated, Predicted, and Measured Parameters. Mol Pharm 2015; 12:3389-98. [PMID: 26236939 DOI: 10.1021/acs.molpharmaceut.5b00409] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The purpose of this study was to develop a predictive model of the amorphous stability of drugs with particular relevance for poorly water-soluble compounds. Twenty-five representative neutral poorly soluble compounds with a diverse range of physicochemical properties and chemical structures were systematically selected from an extensive library of marketed drug products. The physical stability of the amorphous form, measured over a 6 month period by the onset of crystallization of amorphous films prepared by melting and quench-cooling, was assessed using polarized light microscopy. The data were used as a response variable in a statistical model with calculated/predicted or measured molecular, thermodynamic, and kinetic parameters as explanatory variables. Several multiple linear regression models were derived, with varying balance between calculated/predicted and measured parameters. It was shown that inclusion of measured parameters significantly improves the predictive ability of the model. The best model demonstrated a prediction accuracy of 82% and included the following as parameters: melting and glass transition temperatures, enthalpy of fusion, configurational free energy, relaxation time, number of hydrogen bond donors, lipophilicity, and the ratio of carbon to heteroatoms. Good predictions were also obtained with a simpler model, which was comprised of easily acquired quantities: molecular weight and enthalpy of fusion. Statistical models are proposed to predict long-term amorphous drug stability. The models include readily accessible parameters, which are potentially the key factors influencing amorphous stability. The derived models can support faster decision making in drug formulation development.
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Affiliation(s)
- Katarzyna Nurzyńska
- School of Pharmacy and Centre for Biomolecular Sciences, The University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - Jonathan Booth
- Pharmaceutical Development, AstraZeneca , Macclesfield SK10 2NA, United Kingdom
| | - Clive J Roberts
- School of Pharmacy and Centre for Biomolecular Sciences, The University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - James McCabe
- Pharmaceutical Development, AstraZeneca , Macclesfield SK10 2NA, United Kingdom
| | - Ian Dryden
- School of Mathematical Sciences, The University of Nottingham , Nottingham NG7 2RD, United Kingdom
| | - Peter M Fischer
- School of Pharmacy and Centre for Biomolecular Sciences, The University of Nottingham , Nottingham NG7 2RD, United Kingdom
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31
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Kaminska E, Tarnacka M, Wlodarczyk P, Jurkiewicz K, Kolodziejczyk K, Dulski M, Haznar-Garbacz D, Hawelek L, Kaminski K, Wlodarczyk A, Paluch M. Studying the Impact of Modified Saccharides on the Molecular Dynamics and Crystallization Tendencies of Model API Nifedipine. Mol Pharm 2015; 12:3007-19. [DOI: 10.1021/acs.molpharmaceut.5b00271] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- E. Kaminska
- Department
of Pharmacognosy and Phytochemistry, Medical University of Silesia in Katowice, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, ul. Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - M. Tarnacka
- Institute
of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center of Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - P. Wlodarczyk
- Institute of Non-Ferrous Metals, ul. Sowinskiego 5, 44-100 Gliwice, Poland
| | - K. Jurkiewicz
- Institute
of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center of Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - K. Kolodziejczyk
- Institute
of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center of Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - M. Dulski
- Institute
of Material Science, University of Silesia, 75 Pulku Piechoty 1a, 41-500 Chorzow, Poland
| | - D. Haznar-Garbacz
- Institute
of Pharmacy, Center of Drug Absorption and Targeting, Felix-Hausdorff-Strasse
3a, 17489 Greifswald, Germany
| | - L. Hawelek
- Institute of Non-Ferrous Metals, ul. Sowinskiego 5, 44-100 Gliwice, Poland
| | - K. Kaminski
- Institute
of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center of Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - A. Wlodarczyk
- Department
of Animal Histology and Embryology, University of Silesia, ul. Bankowa
9, 40-007 Katowice, Poland
| | - M. Paluch
- Institute
of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian
Center of Education and Interdisciplinary Research, University of Silesia, ul. 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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32
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Amorphous solid dispersions: a robust platform to address bioavailability challenges. Ther Deliv 2015; 6:247-61. [DOI: 10.4155/tde.14.101] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Amorphous solid dispersions (ASDs) are being used with increasing frequency for poorly soluble pharmaceutical compounds in development. These systems consist of an amorphous active pharmaceutical ingredient stabilized by a polymer to produce a system with improved physical and solution stability. ASDs are commonly considered as a means of improving the apparent solubility of an active pharmaceutical ingredient. This review will discuss methods of preparation and characterization of ASDs with an emphasis on understanding and predicting stability. Theoretical understanding of supersaturation and predicting in vivo performance will be stressed. Additionally, a summary of preclinical and clinical development efforts will be presented to give the reader an understanding of risks and key pitfalls when developing an ASD.
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33
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SOOTTITANTAWAT A, PARTANEN R, NEOH TL, YOSHII H. Encapsulation of Hydrophilic and Hydrophobic Flavors by Spray Drying. ACTA ACUST UNITED AC 2015. [DOI: 10.11301/jsfe.16.37] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
| | | | - Tze Loon NEOH
- Department of Applied Biological Science, Kagawa University
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34
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Bhardwaj SP, Arora KK, Kwong E, Templeton A, Clas SD, Suryanarayanan R. Mechanism of Amorphous Itraconazole Stabilization in Polymer Solid Dispersions: Role of Molecular Mobility. Mol Pharm 2014; 11:4228-37. [DOI: 10.1021/mp5004515] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sunny P. Bhardwaj
- Department
of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kapildev K. Arora
- Department
of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Elizabeth Kwong
- Merck Research Laboratories, Merck & Co., Kenilworth, New Jersey 07033, United States
| | - Allen Templeton
- Merck Research Laboratories, Merck & Co., Kenilworth, New Jersey 07033, United States
| | - Sophie-Dorothee Clas
- Merck Research Laboratories, Merck & Co., West Point, Pennsylvania 19486, United States
| | - Raj Suryanarayanan
- Department
of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
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35
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Kothari K, Ragoonanan V, Suryanarayanan R. Dielectric Spectroscopy of Small Molecule Pharmaceuticals—Effect of Sample Configuration. J Pharm Sci 2014; 103:3190-6. [DOI: 10.1002/jps.24110] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 06/23/2014] [Accepted: 07/10/2014] [Indexed: 11/12/2022]
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36
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O'Donnell KP, Woodward WHH. Dielectric spectroscopy for the determination of the glass transition temperature of pharmaceutical solid dispersions. Drug Dev Ind Pharm 2014; 41:959-68. [PMID: 24842545 DOI: 10.3109/03639045.2014.919314] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The purpose of this study was to evaluate analytical techniques for the measurement of the glass transition temperature of HPMC and formulated solid dispersions thereof. Unmodified samples of various grades of HPMC and solid dispersions of HPMC and itraconazole produced by hot melt extrusion were analyzed by thermomechanical analysis, differential scanning calorimetry, thermally stimulated depolarization current and dielectric spectroscopy. It was found that dielectric spectroscopy offers the best accuracy and reproducibility for analysis of the base HPMC powders regardless of the substitution type or viscosity grade and that the obtained results were not frequency dependent. The results of dielectric measurements of solid dispersions prepared by hot melt extrusion were compared with predicted values of the Gordon-Taylor equation. It was found that time-temperature superposition effects and small molecule frequency dependence makes broadly applying determination of the glass transition temperature in drug dispersions by dielectric spectroscopy prohibitively difficult.
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37
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Sanz A, Nogales A, Puente-Orench I, Jiménez-Ruiz M, Ezquerra TA. Changes in mobility of plastic crystal ethanol during its transformation into the monoclinic crystal state. J Chem Phys 2014; 140:054510. [PMID: 24511955 DOI: 10.1063/1.4863694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Transformation of deuterated ethanol from the plastic crystal phase into the monoclinic one is investigated by means of a singular setup combining simultaneously dielectric spectroscopy with neutron diffraction. We postulate that a dynamic transition from plastic crystal to supercooled liquid-like configuration through a deep reorganization of the hydrogen-bonding network must take place as a previous step of the crystallization process. Once these precursor regions are formed, subsequent crystalline nucleation and growth develop with time.
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Affiliation(s)
- Alejandro Sanz
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain
| | - Aurora Nogales
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain
| | | | | | - Tiberio A Ezquerra
- Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, 28006 Madrid, Spain
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38
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Brown C, DiNunzio J, Eglesia M, Forster S, Lamm M, Lowinger M, Marsac P, McKelvey C, Meyer R, Schenck L, Terife G, Troup G, Smith-Goettler B, Starbuck C. Hot-Melt Extrusion for Solid Dispersions: Composition and Design Considerations. ADVANCES IN DELIVERY SCIENCE AND TECHNOLOGY 2014. [DOI: 10.1007/978-1-4939-1598-9_6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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39
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Rodrigues AC, Viciosa MT, Danède F, Affouard F, Correia NT. Molecular Mobility of Amorphous S-Flurbiprofen: A Dielectric Relaxation Spectroscopy Approach. Mol Pharm 2013; 11:112-30. [DOI: 10.1021/mp4002188] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. C. Rodrigues
- REQUIMTE/CQFB, Departamento de Química, Faculdade
de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - M. T. Viciosa
- CQFM − Centro
de Química-Física Molecular and IN − Institute
of Nanoscience and Nanotechnology, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - F. Danède
- Unité Matériaux et Transformation (UMET), UMR CNRS
8207, UFR de Physique, BAT P5, Université Lille 1, 59655 Villeneuve d’Ascq, France
| | - F. Affouard
- Unité Matériaux et Transformation (UMET), UMR CNRS
8207, UFR de Physique, BAT P5, Université Lille 1, 59655 Villeneuve d’Ascq, France
| | - N. T. Correia
- REQUIMTE/CQFB, Departamento de Química, Faculdade
de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Unité Matériaux et Transformation (UMET), UMR CNRS
8207, UFR de Physique, BAT P5, Université Lille 1, 59655 Villeneuve d’Ascq, France
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40
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Shete G, Khomane KS, Bansal AK. Molecular relaxation behavior and isothermal crystallization above glass transition temperature of amorphous hesperetin. J Pharm Sci 2013; 103:167-78. [PMID: 24186540 DOI: 10.1002/jps.23766] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2013] [Revised: 10/04/2013] [Accepted: 10/11/2013] [Indexed: 11/07/2022]
Abstract
The purpose of this paper was to investigate the relaxation behavior of amorphous hesperetin (HRN), using dielectric spectroscopy, and assessment of its crystallization kinetics above glass transition temperature (Tg ). Amorphous HRN exhibited both local (β-) and global (α-) relaxations. β-Relaxation was observed below Tg , whereas α-relaxation prominently emerged above Tg . β-Relaxation was found to be of Johari-Goldstein type and was correlated with α-process by coupling model. Secondly, isothermal crystallization experiments were performed at 363 K (Tg + 16.5 K), 373 K (Tg + 26.5 K), and 383 K (Tg + 36.5 K). The kinetics of crystallization, obtained from the normalized dielectric strength, was modeled using the Avrami model. Havriliak-Negami (HN) shape parameters, αHN and αHN .βHN , were analyzed during the course of crystallization to understand the dynamics of amorphous phase during the emergence of crystallites. HN shape parameters indicated that long range (α-like) were motions affected to a greater extent than short range (β-like) motions during isothermal crystallization studies at all temperature conditions. The variable behavior of α-like motions at different isothermal crystallization temperatures was attributed to evolving crystallites with time and increase in electrical conductivity with temperature.
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Affiliation(s)
- Ganesh Shete
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), S.A.S. Nagar, Punjab, 160062, India
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41
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Guo Y, Shalaev E, Smith S. Physical stability of pharmaceutical formulations: solid-state characterization of amorphous dispersions. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2013.06.002] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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42
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Merino EG, Danéde F, Derrollez P, Dias CJ, Viciosa MT, Correia NT, Dionísio M. Investigating the Influence of Morphology in the Dynamical Behavior of Semicrystalline Triton X-100: Insights in the Detection/Nondetection of the α′-Process. J Phys Chem B 2013; 117:9793-805. [DOI: 10.1021/jp4042414] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Esther G. Merino
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Florence Danéde
- Unité Matériaux
Et Transformations (UMET), UMR CNRS 8207, UFR de Physique, BAT P5, Université Lille Nord de France, F-59655 Villeneuve
d’Ascq Cedex, France
| | - Patrick Derrollez
- Unité Matériaux
Et Transformations (UMET), UMR CNRS 8207, UFR de Physique, BAT P5, Université Lille Nord de France, F-59655 Villeneuve
d’Ascq Cedex, France
| | - Carlos J. Dias
- CENIMAT/I3N, Departamento de Ciência
dos Materiais, Faculdade de Ciências e Tecnologia, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - M. Teresa Viciosa
- CQFM—Centro de Química-Física
Molecular and IN—Institute of Nanoscience and Nanotechnology,
Instituto Superior Técnico, Universidade Técnica de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Natália T. Correia
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
- Unité Matériaux
Et Transformations (UMET), UMR CNRS 8207, UFR de Physique, BAT P5, Université Lille Nord de France, F-59655 Villeneuve
d’Ascq Cedex, France
| | - Madalena Dionísio
- REQUIMTE/CQFB, Departamento
de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
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43
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Williams HD, Trevaskis NL, Charman SA, Shanker RM, Charman WN, Pouton CW, Porter CJH. Strategies to address low drug solubility in discovery and development. Pharmacol Rev 2013; 65:315-499. [PMID: 23383426 DOI: 10.1124/pr.112.005660] [Citation(s) in RCA: 972] [Impact Index Per Article: 88.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Drugs with low water solubility are predisposed to low and variable oral bioavailability and, therefore, to variability in clinical response. Despite significant efforts to "design in" acceptable developability properties (including aqueous solubility) during lead optimization, approximately 40% of currently marketed compounds and most current drug development candidates remain poorly water-soluble. The fact that so many drug candidates of this type are advanced into development and clinical assessment is testament to an increasingly sophisticated understanding of the approaches that can be taken to promote apparent solubility in the gastrointestinal tract and to support drug exposure after oral administration. Here we provide a detailed commentary on the major challenges to the progression of a poorly water-soluble lead or development candidate and review the approaches and strategies that can be taken to facilitate compound progression. In particular, we address the fundamental principles that underpin the use of strategies, including pH adjustment and salt-form selection, polymorphs, cocrystals, cosolvents, surfactants, cyclodextrins, particle size reduction, amorphous solid dispersions, and lipid-based formulations. In each case, the theoretical basis for utility is described along with a detailed review of recent advances in the field. The article provides an integrated and contemporary discussion of current approaches to solubility and dissolution enhancement but has been deliberately structured as a series of stand-alone sections to allow also directed access to a specific technology (e.g., solid dispersions, lipid-based formulations, or salt forms) where required.
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Affiliation(s)
- Hywel D Williams
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
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44
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Kolodziejczyk K, Paluch M, Grzybowska K, Grzybowski A, Wojnarowska Z, Hawelek L, Ziolo JD. Relaxation Dynamics and Crystallization Study of Sildenafil in the Liquid and Glassy States. Mol Pharm 2013; 10:2270-82. [DOI: 10.1021/mp300479r] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. Kolodziejczyk
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - M. Paluch
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - K. Grzybowska
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - A. Grzybowski
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - Z. Wojnarowska
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
| | - L. Hawelek
- Institute of Physics, University
of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland
- Institute of Non Ferrous Metals,
ul. Sowinskiego 5, 44-100 Gliwice, Poland
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45
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Sailaja U, Shahin Thayyil M, Krishna Kumar N, Govindaraj G. Molecular dynamics in liquid and glassy states of non-steroidal anti-inflammatory drug: Ketoprofen. Eur J Pharm Sci 2013; 49:333-40. [DOI: 10.1016/j.ejps.2013.03.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 02/28/2013] [Accepted: 03/25/2013] [Indexed: 10/27/2022]
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46
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Bhardwaj SP, Arora KK, Kwong E, Templeton A, Clas SD, Suryanarayanan R. Correlation between Molecular Mobility and Physical Stability of Amorphous Itraconazole. Mol Pharm 2013. [PMID: 23198856 DOI: 10.1021/mp300487u] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sunny P. Bhardwaj
- Department of Pharmaceutics,
University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Kapildev K. Arora
- Department of Pharmaceutics,
University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Elizabeth Kwong
- Basic Pharmaceutical Sciences, Merck & Co, West Point, Pennsylvania 19486, United States
| | - Allen Templeton
- Basic Pharmaceutical Sciences, Merck & Co, West Point, Pennsylvania 19486, United States
| | - Sophie-Dorothee Clas
- Basic Pharmaceutical Sciences, Merck & Co, West Point, Pennsylvania 19486, United States
| | - Raj Suryanarayanan
- Department of Pharmaceutics,
University of Minnesota, Minneapolis, Minnesota 55455, United States
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47
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Bhardwaj SP, Suryanarayanan R. Molecular Mobility as an Effective Predictor of the Physical Stability of Amorphous Trehalose. Mol Pharm 2012; 9:3209-17. [DOI: 10.1021/mp300302g] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sunny P. Bhardwaj
- Department of Pharmaceutics,
University of Minnesota,
Minneapolis, Minnesota 55455, United States
| | - Raj Suryanarayanan
- Department of Pharmaceutics,
University of Minnesota,
Minneapolis, Minnesota 55455, United States
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48
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Bhardwaj SP, Suryanarayanan R. Use of Dielectric Spectroscopy To Monitor Molecular Mobility in Glassy and Supercooled Trehalose. J Phys Chem B 2012; 116:11728-36. [DOI: 10.1021/jp303317p] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sunny P. Bhardwaj
- Department of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Raj Suryanarayanan
- Department of Pharmaceutics, University of Minnesota, Minneapolis, Minnesota 55455, United States
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49
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Potes N, Kerry JP, Roos YH. Additivity of water sorption, alpha-relaxations and crystallization inhibition in lactose–maltodextrin systems. Carbohydr Polym 2012; 89:1050-9. [DOI: 10.1016/j.carbpol.2012.03.061] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 03/12/2012] [Accepted: 03/16/2012] [Indexed: 11/29/2022]
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50
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Adrjanowicz K, Kaminski K, Paluch M, Ngai KL, Yu L. Study of dynamics and crystallization kinetics of 5-methyl-2-[(2-nitrophenyl)amino]-3-thiophenecarbonitrile at ambient and elevated pressure. J Chem Phys 2012; 136:234509. [DOI: 10.1063/1.4728162] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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