1
|
Luo M, Chen A, Huang C, Guo M, Cai T. Effects of Polymers on Cocrystal Growth in a Drug-Drug Coamorphous System: Relations between Glass-to-Crystal Growth and Surface-Enhanced Crystal Growth. Mol Pharm 2024. [PMID: 38818946 DOI: 10.1021/acs.molpharmaceut.4c00315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Coamorphous and cocrystal drug delivery systems provide attractive crystal engineering strategies for improving the solubilities, dissolution rates, and oral bioavailabilities of poorly water-soluble drugs. Polymeric additives have often been used to inhibit the unwanted crystallization of amorphous drugs. However, the transformation of a coamorphous phase to a cocrystal phase in the presence of polymers has not been fully elucidated. Herein, we investigated the effects of low concentrations of the polymeric excipients poly(ethylene oxide) (PEO) and poly(vinylpyrrolidone) (PVP) on the growth of carbamazepine-celecoxib (CBZ-CEL) cocrystals from the corresponding coamorphous phase. PEO accelerated the growth rate of the cocrystals by increasing the molecular mobility of the coamorphous system, while PVP had the opposite effect. The coamorphous CBZ-CEL system exhibited two anomalously fast crystal growth modes: glass-to-crystal (GC) growth in the bulk and accelerated crystal growth at the free surface. These two fast growth modes both disappeared after doping with PEO (1-3% w/w) but were retained in the presence of PVP, indicating a potential correlation between the two fast crystal growth modes. We propose that the different effects of PEO and PVP on the crystal growth modes arose from weaker effects of the polymers on cocrystallization at the surface than in the bulk. This work provides a deep understanding of the mechanisms by which polymers influence the cocrystallization kinetics of a multicomponent amorphous phase and highlights the importance of polymer selection in stabilizing coamorphous systems or preparing cocrystals via solid-based methods.
Collapse
Affiliation(s)
- Minqian Luo
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - An Chen
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Chengbin Huang
- CMC Drug Product, Research and Development, BeiGene Co., Inc., Beijing 102206, China
| | - Minshan Guo
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ting Cai
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| |
Collapse
|
2
|
Wang Y, Chin CY, Shivashekaregowda NKH, Shi Q. Implications of Low-concentration Polymer on the Physical Stability of Glassy Griseofulvin: Role of the Segmental Mobility. AAPS PharmSciTech 2024; 25:103. [PMID: 38714634 DOI: 10.1208/s12249-024-02809-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 04/17/2024] [Indexed: 05/10/2024] Open
Abstract
Crystallization of amorphous pharmaceutical solids are widely reported to be affected by the addition of polymer, while the underlying mechanism require deep study. Herein, crystal growth behaviors of glassy griseofulvin (GSF) doped with various 1% w/w polymer were systematically studied. From the molecular structure, GSF cannot form the hydrogen bonding interactions with the selected polymer poly(vinyl acetate), polyvinyl pyrrolidone (PVP), 60:40 vinyl pyrrolidone-vinyl acetate copolymer (PVP/VA 64), and poly(ethylene oxide) (PEO). 1% w/w polymer exhibited weak or no detectable effects on the glass transition temperature (Tg) of GSF. However, crystal growth rates of GSF was altered from 4.27-fold increase to 2.57-fold decrease at 8 ℃ below Tg of GSF. Interestingly, the ability to accelerate and inhibit the growth rates of GSF crystals correlated well with Tg of polymer, indicating the controlling role of segmental mobility of polymer. Moreover, ring-banded growth of GSF was observed in the polymer-doped systems. Normal compact bulk and ring-banded crystals of GSF were both characterized as the thermodynamically stable form I. More importantly, formation of ring-banded crystals of GSF can significantly weaken the inhibitory effects of polymer on the crystallization of glassy GSF.
Collapse
Affiliation(s)
- Yanan Wang
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, 224005, China
- Digital Health and Medical Advancement Impact Lab, Taylor's University, Subang Jaya, Selangor, 47500, Malaysia
| | - Chai-Yee Chin
- School of Pharmacy, Faculty of Health and Medical Science, Taylor's University, Subang Jaya, 47500, Malaysia
| | - Naveen Kumar Hawala Shivashekaregowda
- School of Pharmacy, Faculty of Health and Medical Science, Taylor's University, Subang Jaya, 47500, Malaysia.
- Digital Health and Medical Advancement Impact Lab, Taylor's University, Subang Jaya, Selangor, 47500, Malaysia.
| | - Qin Shi
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng, 224005, China.
| |
Collapse
|
3
|
Song S, Yao X, Wang C, Sun CC, Siegel RA. Delaying the First Nucleation Event of Amorphous Solid Dispersions Above the Polymer Overlap Concentration (c*): PVP and PVPVA in Posaconazole. J Pharm Sci 2024:S0022-3549(24)00154-0. [PMID: 38685452 DOI: 10.1016/j.xphs.2024.04.026] [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: 03/12/2024] [Revised: 04/23/2024] [Accepted: 04/23/2024] [Indexed: 05/02/2024]
Abstract
A thorough understanding of effects of polymers on crystallization of amorphous drugs is essential for rational design of robust amorphous solid dispersion (ASD), since crystallization of the amorphous drug negates their solubility advantage. In this work, we measured the first nucleation time (t0, time to form the first critical nucleus in fresh liquid/glass) in posaconazole (POS)/polyvinylpyrrolidone vinyl acetate (PVPVA) and POS/polyvinylpyrrolidone (PVP K25) ASDs and showed that the polymer overlap concentration (c*, concentration above which adjacent polymer chains begin to contact) is critical in controlling crystallization of ASDs. When polymer concentration c < c*, t0 of POS ASDs is approximately equal to that of the neat amorphous POS, but it increases significantly when c > c*. This observation supports the view that the effective inhibitory effect of crystallization in ASDs above c* is primarily correlated with delay in the first nucleation event. Our finding is useful in efficient polymer selection and performance prediction of high drug loaded ASD formulations.
Collapse
Affiliation(s)
- Sichen Song
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, 55455, United States; School of Mathematics, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Xin Yao
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, United States; Research and Development, AbbVie Inc., North Chicago, IL, 60064, United States
| | - Chenguang Wang
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Changquan Calvin Sun
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, 55455, United States
| | - Ronald A Siegel
- Department of Pharmaceutics, University of Minnesota, Minneapolis, MN, 55455, United States; Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, 55455, United States.
| |
Collapse
|
4
|
Chen A, Cai P, Peng Y, Guo M, Su Y, Cai T. The role of alkyl chain length in the melt and solution crystallization of paliperidone aliphatic prodrugs. IUCRJ 2024; 11:23-33. [PMID: 37962472 PMCID: PMC10833388 DOI: 10.1107/s2052252523009582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023]
Abstract
Fatty acid-derivative prodrugs have been utilized extensively to improve the physicochemical, biopharmaceutical and pharmacokinetic properties of active pharmaceutical ingredients. However, to our knowledge, the crystallization behavior of prodrugs modified with different fatty acids has not been explored. In the present work, a series of paliperidone aliphatic prodrugs with alkyl chain lengths ranging from C4 to C16 was investigated with respect to crystal structure, crystal morphology and crystallization kinetics. The paliperidone derivatives exhibited isostructural crystal packing, despite the different alkyl chain lengths, and crystallized with the dominant (100) face in both melt and solution. The rate of crystallization for paliperidone derivatives in the melt increases with alkyl chain length owing to greater molecular mobility. In contrast, the longer chains prolong the nucleation induction time and reduce the crystal growth kinetics in solution. The results show a correlation between difficulty of nucleation in solution and the interfacial energy. This work provides insight into the crystallization behavior of paliperidone aliphatic prodrugs and reveals that the role of alkyl chain length in the crystallization behavior has a strong dependence on the crystallization method.
Collapse
Affiliation(s)
- An Chen
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Peishan Cai
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Yayun Peng
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Minshan Guo
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Yuan Su
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| | - Ting Cai
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, People’s Republic of China
| |
Collapse
|
5
|
Fan F, Xu S, Guo M, Cai T. Effect of organic acids on the solid-state polymorphic phase transformation of piracetam. Int J Pharm 2023; 647:123532. [PMID: 37871868 DOI: 10.1016/j.ijpharm.2023.123532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/11/2023] [Accepted: 10/17/2023] [Indexed: 10/25/2023]
Abstract
Metastable polymorphs are frequently used in oral solid dosage forms to enhance the absorption of poorly water-soluble drug compounds. However, the solid phase transformation from the metastable polymorph to the thermodynamically stable polymorph during manufacturing or storage poses a major challenge for product development and quality control. Here, we report that low-content organic acids can exhibit distinct effects on the solid-state polymorphic phase transformation of piracetam (PCM), a nootropic drug used for memory enhancement. The addition of 1 mol% citric acid (CA) and tricarballylic acid (TA) can significantly inhibit the phase transformation of PCM Form I to Form II, while glutaric acid (GA) and adipic acid (AA) produce a minor effect. A molecular simulation shows that organic acid molecules can adsorb on the crystal surface of PCM Form I, thus slowing the movement of molecules from the metastable form to the stable form. Our study provides deeper insights into the mechanisms of solid-state polymorphic phase transformation of drugs in the presence of additives and facilitates opportunities for controlling the stability of metastable pharmaceuticals.
Collapse
Affiliation(s)
- Fanfan Fan
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Shuyuan Xu
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Minshan Guo
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ting Cai
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, College of Pharmacy, China Pharmaceutical University, Nanjing 211198, China; Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, China.
| |
Collapse
|
6
|
Zhang J, Yang Z, Luo L, Li K, Zi T, Ren J, Pan L, Wang Z, Wang Z, Liu M, Zeng Z. Impact of Poloxamer on Crystal Nucleation and Growth of Amorphous Clotrimazole. Pharmaceutics 2023; 15:2164. [PMID: 37631378 PMCID: PMC10460058 DOI: 10.3390/pharmaceutics15082164] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/19/2023] [Accepted: 08/19/2023] [Indexed: 08/27/2023] Open
Abstract
Surfactants have been widely used as effective additives to increase the solubility and dissolution rates of amorphous solid dispersions (ASDs). However, they may also generate adverse effects on the physical stability of ASDs. In this study, we systematically investigated the impacts of poloxamer, a frequently used surfactant, on the crystallization of amorphous clotrimazole (CMZ). The added poloxamer significantly decreased the glass transition temperature (Tg) of CMZ and accelerated the growth of Form 1 and Form 2 crystals. It was found that the poloxamer had an accelerating effect on Form 1 and Form 2 but showed a larger accelerating effect on Form 1, which resulted from a combined effect of increased mobility and local phase separation at the crystal-liquid interface. Additionally, the added poloxamer exhibited different effects on nucleation of the CMZ polymorphs, which was more complicated than crystal growth. The nucleation rate of Form 1 was significantly increased by the added poloxamer, and the effect increased with increasing P407 content. However, for Form 2, nucleation was slightly decreased or unchanged. The nucleation of Form 2 may have been influenced by the Form 1 crystallization, and Form 2 converted to Form 1 during nucleation. This study increases our understanding of poloxamer and its impacts on the melt crystallization of drugs.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Minzhuo Liu
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China; (J.Z.)
| | - Zhihong Zeng
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China; (J.Z.)
| |
Collapse
|
7
|
Zhang J, Guo M, Luo M, Cai T. Advances in the development of amorphous solid dispersions: The role of polymeric carriers. Asian J Pharm Sci 2023; 18:100834. [PMID: 37635801 PMCID: PMC10450425 DOI: 10.1016/j.ajps.2023.100834] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/26/2023] [Accepted: 07/23/2023] [Indexed: 08/27/2023] Open
Abstract
Amorphous solid dispersion (ASD) is one of the most effective approaches for delivering poorly soluble drugs. In ASDs, polymeric materials serve as the carriers in which the drugs are dispersed at the molecular level. To prepare the solid dispersions, there are many polymers with various physicochemical and thermochemical characteristics available for use in ASD formulations. Polymer selection is of great importance because it influences the stability, solubility and dissolution rates, manufacturing process, and bioavailability of the ASD. This review article provides a comprehensive overview of ASDs from the perspectives of physicochemical characteristics of polymers, formulation designs and preparation methods. Furthermore, considerations of safety and regulatory requirements along with the studies recommended for characterizing and evaluating polymeric carriers are briefly discussed.
Collapse
Affiliation(s)
- Jie Zhang
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| | - Minshan Guo
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Minqian Luo
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Ting Cai
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 211198, China
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 211198, China
| |
Collapse
|
8
|
Wang Y, Zhang H, Cai L, Xue F, Chen H, Gong J, Du S. Polymer-mediated and ultrasound-assisted crystallization of ropivacaine: Crystal growth and morphology modulation. ULTRASONICS SONOCHEMISTRY 2023; 97:106475. [PMID: 37321071 DOI: 10.1016/j.ultsonch.2023.106475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/30/2023] [Accepted: 06/06/2023] [Indexed: 06/17/2023]
Abstract
The objective of this research was to modify the crystal shape and size of poorly water-soluble drug ropivacaine, and to reveal the effects of polymeric additive and ultrasound on crystal nucleation and growth. Ropivacaine often grow as needle-like crystals extended along the a-axis and the shape was hardly controllable by altering solvent types and operating conditions for the crystallization process. We found that ropivacaine crystallized as block-like crystals when polyvinylpyrrolidone (PVP) was used. The control over crystal morphology by the additive was related to crystallization temperature, solute concentration, additive concentration, and molecular weight. SEM and AFM analyses were performed providing insights into crystal growth pattern and cavities on the surface induced by the polymeric additive. In ultrasound-assisted crystallization, the impacts of ultrasonic time, ultrasonic power, and additive concentration were investigated. The particles precipitated at extended ultrasonic time exhibited plate-like crystals with shorter aspect ratio. Combined use of polymeric additive and ultrasound led to rice-shaped crystals, which the average particle size was further decreased. The induction time measurement and single crystal growth experiments were carried out. The results suggested that PVP worked as strong nucleation and growth inhibitor. Molecular dynamics simulation was performed to explore the action mechanism of the polymer. The interaction energies between PVP and crystal faces were calculated, and mobility of the additive with different chain length in crystal-solution system was evaluated by mean square displacement. Based on the study, a possible mechanism for the morphological evolution of ropivacaine crystals assisted by PVP and ultrasound was proposed.
Collapse
Affiliation(s)
- Yan Wang
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China
| | - Huixiang Zhang
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China
| | - Lun Cai
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China
| | - Fumin Xue
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China
| | - Hui Chen
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China
| | - Junbo Gong
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China; School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, PR China
| | - Shichao Du
- School of Pharmaceutical Sciences (Shandong Analysis and Testing Center), Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, PR China.
| |
Collapse
|
9
|
Lapuk SE, Mukhametzyanov TA, Schick C, Gerasimov AV. Kinetic Stability and Glass-Forming Ability of Thermally Labile Quinolone Antibiotics. Mol Pharm 2023. [PMID: 37133972 DOI: 10.1021/acs.molpharmaceut.3c00211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The application of drugs in the amorphous state is one way to improve their bioavailability. As such, the determination of the optimal conditions for production and the assessment of the stability of the amorphous system are actively researched topics of present-day pharmaceutical science. In the present work, we have studied the kinetic stability and glass-forming ability of the thermally labile quinolone antibiotics using fast scanning calorimetry. The critical cooling rates for avoiding crystallization of the melts of oxolinic and pipemidic acids and sparfloxacin were determined to be 10 000, 40, and 80 K·s-1, respectively. The studied antibiotics were found to be "strong" glass formers. Based on a combination of nonisothermal and isothermal kinetic approaches, the Nakamura model was suitable for describing the crystallization process of the amorphous forms of the quinolone antibiotics.
Collapse
Affiliation(s)
- Semen E Lapuk
- Department of Physical Chemistry, A. M. Butlerov Institute of Chemistry, Kazan Federal University, Kremlyovskaya, 18, Kazan 420008, Russia
| | - Timur A Mukhametzyanov
- Department of Physical Chemistry, A. M. Butlerov Institute of Chemistry, Kazan Federal University, Kremlyovskaya, 18, Kazan 420008, Russia
| | - Christoph Schick
- Institute of Physics, Universität Rostock, Albert-Einstein_Street 23-24, Rostock 18051, DE, Germany
| | - Alexander V Gerasimov
- Department of Physical Chemistry, A. M. Butlerov Institute of Chemistry, Kazan Federal University, Kremlyovskaya, 18, Kazan 420008, Russia
| |
Collapse
|
10
|
Liu WY, Hsieh YS, Ko HH, Wu YT. Formulation Approaches to Crystalline Status Modification for Carotenoids: Impacts on Dissolution, Stability, Bioavailability, and Bioactivities. Pharmaceutics 2023; 15:pharmaceutics15020485. [PMID: 36839810 PMCID: PMC9965060 DOI: 10.3390/pharmaceutics15020485] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/30/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Carotenoids, including carotenes and xanthophylls, have been identified as bioactive ingredients in foods and are considered to possess health-promoting effects. From a biopharmaceutical perspective, several physicochemical characteristics, such as scanty water solubility, restricted dissolution, and susceptibility to oxidation may influence their oral bioavailability and eventually, their effectiveness. In this review, we have summarized various formulation approaches that deal with the modification of crystalline status for carotenoids, which may improve their physicochemical properties, oral absorption, and biological effects. The mechanisms involving crystalline alteration and the typical methods for examining crystalline states in the pharmaceutical field have been included, and representative formulation approaches are introduced to unriddle the mechanisms and effects more clearly.
Collapse
Affiliation(s)
- Wan-Yi Liu
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yun-Shan Hsieh
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Horng-Huey Ko
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Drug Development and Value Creation Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (H.-H.K.); (Y.-T.W.); Tel.: +886-7-3121101 (ext. 2643) (H.-H.K.); +886-7-3121101 (ext. 2254) (Y.-T.W.)
| | - Yu-Tse Wu
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (H.-H.K.); (Y.-T.W.); Tel.: +886-7-3121101 (ext. 2643) (H.-H.K.); +886-7-3121101 (ext. 2254) (Y.-T.W.)
| |
Collapse
|
11
|
Supersaturation and phase behavior during dissolution of amorphous solid dispersions. Int J Pharm 2023; 631:122524. [PMID: 36549404 DOI: 10.1016/j.ijpharm.2022.122524] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/04/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022]
Abstract
Amorphous solid dispersion (ASD) is a promising strategy to enhance solubility and bioavailability of poorly water-soluble drugs. Due to higher free energy of ASD, supersaturated drug solution could be generated during dissolution. When amorphous solubility of a drug is exceeded, drug-rich nanodroplets could form and act as a reservoir to maintain the maximum free drug concentration in solution, facilitating the absorption of the drug in vivo. Dissolution behavior of ASD has received increasing interests. This review will focus on the recent advances in ASD dissolution, including the generation and maintenance of supersaturated drug solution in absence or presence of liquid-liquid phase separation. Mechanism of drug release from ASD including polymer-controlled dissolution and drug-controlled dissolution will be introduced. Formation of amorphous drug-rich nanodroplets during dissolution and the underlying mechanism will be discussed. Phase separation morphology of hydrated ASD plays a critical role in dissolution behavior of ASD, which will be highlighted. Supersaturated drug solution shows poor physical stability and tends to crystallize. The effect of polymer and surfactant on supersaturated drug solution will be demonstrated and some unexpected results will be shown. Physicochemical properties of drug and polymer could impact ASD dissolution and some of them even show opposite effect on dissolution and physical stability of ASD in solid state, respectively. This review will contribute to a better understanding of ASD dissolution and facilitate a rational design of ASD formulation.
Collapse
|
12
|
Zhang J, Liu M, Xu M, Chen Z, Peng X, Yang Q, Cai T, Zeng Z. Discovery of a new polymorph of clotrimazole through melt crystallization: Understanding nucleation and growth kinetics. J Chem Phys 2023; 158:034503. [PMID: 36681648 DOI: 10.1063/5.0130600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Clotrimazole (CMZ) is a classical antifungal drug for studying crystallization. In this study, a new CMZ polymorph (Form 2) was discovered during the process of nucleation and growth rate determination in the melt. High-quality single crystals were grown from melt microdroplets to determine the crystal structure by x-ray diffraction. Form 2 is metastable and exhibits a disordered structure. The crystal nucleation and growth kinetics of the two CMZ polymorphs were systematically measured. Form 2 nucleates and grows faster than the existing form (Form 1). The maximum nucleation rate of Forms 1 and 2 was observed at 50 °C (1.07 Tg). The summary of the maximum nucleation rate temperature of CMZ and the other six organic compounds indicates that nucleation near Tg in the supercooled liquid is a useful approach to discovering new polymorphs. This study is relevant for the discovering new drug polymorphs through an understanding of nucleation and growth kinetics during melt crystallization.
Collapse
Affiliation(s)
- Jie Zhang
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| | - Minzhuo Liu
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| | - Meixia Xu
- Yantai Key Laboratory of Nanomedicine and Advanced Preparations, Yantai Institute of Materia Medica, Shandong 264000, China
| | - Zhiguo Chen
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| | - Xucong Peng
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| | - Qiusheng Yang
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| | - Ting Cai
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Zhihong Zeng
- College of Biological and Chemical Engineering, Changsha University, Changsha 410022, China
| |
Collapse
|
13
|
Chen Q, Ji Y. Thermodynamic Mechanism of Physical Stability of Amorphous Pharmaceutical Formulations. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c02953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Qiao Chen
- Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, People’s Republic of China
| | - Yuanhui Ji
- Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, School of Chemistry and Chemical Engineering, Southeast University, Nanjing211189, People’s Republic of China
| |
Collapse
|
14
|
Shi Q, Chen H, Wang Y, Wang R, Xu J, Zhang C. Amorphous Solid Dispersions: Role of the Polymer and Its Importance in Physical Stability and In Vitro Performance. Pharmaceutics 2022; 14:pharmaceutics14081747. [PMID: 36015373 PMCID: PMC9413000 DOI: 10.3390/pharmaceutics14081747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/15/2022] [Accepted: 08/18/2022] [Indexed: 01/25/2023] Open
Abstract
Amorphous solid dispersions stabilized by one or more polymer(s) have been widely used for delivering amorphous drugs with poor water solubilities, and they have gained great market success. Polymer selection is important for preparing robust amorphous solid dispersions, and considerations should be given as to how the critical attributes of a polymer can enhance the physical stability, and the in vitro and in vivo performances of a drug. This article provides a comprehensive overview for recent developments in the understanding the role of polymers in amorphous solid dispersions from the aspects of nucleation, crystal growth, overall crystallization, miscibility, phase separation, dissolution, and supersaturation. The critical properties of polymers affecting the physical stability and the in vitro performance of amorphous solid dispersions are also highlighted. Moreover, a perspective regarding the current research gaps and novel research directions for better understanding the role of the polymer is provided. This review will provide guidance for the rational design of polymer-based amorphous pharmaceutical solids with desired physicochemical properties from the perspective of physical stability and in vitro performance.
Collapse
Affiliation(s)
- Qin Shi
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
- Correspondence: (Q.S.); (C.Z.)
| | - Haibiao Chen
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Yanan Wang
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Ruoxun Wang
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Jia Xu
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Chen Zhang
- Institute of Marine Biomedicine, Shenzhen Polytechnic, Shenzhen 518055, China
- Correspondence: (Q.S.); (C.Z.)
| |
Collapse
|
15
|
Shi Q, Moinuddin SM, Wang Y, Ahsan F, Li F. Physical stability and dissolution behaviors of amorphous pharmaceutical solids: Role of surface and interface effects. Int J Pharm 2022; 625:122098. [PMID: 35961416 DOI: 10.1016/j.ijpharm.2022.122098] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/28/2022] [Accepted: 08/05/2022] [Indexed: 11/24/2022]
Abstract
Amorphous pharmaceutical solids (APS) are single- or multi-component systems in which drugs exist in high-energy states with long-range disordered molecular packing. APSs have become one of the most effective and widely used pharmaceutical delivery approaches for poorly water-soluble drugs in the last several decades. Considerable efforts have been made to investigate the physical stability and dissolution behaviors of APSs, however, the underlying mechanisms remain imperfectly understood. Recent studies reveal that surface and interface properties of APSs could strongly affect the physical stability and dissolution behaviors. This paper provides a comprehensive overview of recent studies focusing on the physical stability and dissolution behaviors of APSs from both surface and interface perspectives. We highlight the role of surface or interface properties in nucleation, crystal growth, phase separation, dissolution, and supersaturation. Meanwhile, the challenges and scope of research on surface and interface properties in the future are also briefly discussed. This review contributes to a better understanding of the surface- and interface-facilitated processes, which will provide more efficient and rational guidance for the design of APSs.
Collapse
Affiliation(s)
- Qin Shi
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China.
| | - Sakib M Moinuddin
- California Northstate University, College of Pharmacy, 9700 West Taron Drive, Elk Grove, CA 95757, USA; East Bay Institute For Research & Education (EBIRE), 10535 Hospital Way, Bldg. 650 2nd Floor, Rm. 2B121A, Mather, CA 95655, USA
| | - Yanan Wang
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China
| | - Fakhrul Ahsan
- California Northstate University, College of Pharmacy, 9700 West Taron Drive, Elk Grove, CA 95757, USA; East Bay Institute For Research & Education (EBIRE), 10535 Hospital Way, Bldg. 650 2nd Floor, Rm. 2B121A, Mather, CA 95655, USA.
| | - Fang Li
- School of Pharmacy, Jiangsu Vocational College of Medicine, Yancheng 224005, China.
| |
Collapse
|
16
|
Yao X, Benson EG, Gui Y, Stelzer T, Zhang GGZ, Yu L. Surfactants Accelerate Crystallization of Amorphous Nifedipine by Similar Enhancement of Nucleation and Growth Independent of Hydrophilic-Lipophilic Balance. Mol Pharm 2022; 19:2343-2350. [PMID: 35477294 DOI: 10.1021/acs.molpharmaceut.2c00156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Amorphous formulations, increasingly employed to deliver poorly soluble drugs, generally contain surfactants to improve wetting and dissolution. These surfactants are often liquids and can potentially increase the mobility of the drug and reduce its stability, but little is known about this effect. Here we investigate the effect of four common nonionic surfactants (Tween 80, Span 80, Triton X-100, and Poloxamer 407) on the crystallization of amorphous nifedipine (NIF). We find that the surfactants significantly enhance the rates of crystal nucleation and growth even at low concentrations, by up to 2 orders of magnitude at 10 wt %. The surfactants tested show similar enhancement effects independent of their structural details and hydrophilic-lipophilic balance (HLB), suggesting that surfactant adsorption at solid/liquid interfaces does not play a major role in crystal nucleation and growth. Importantly, the surfactants accelerate crystal nucleation and growth by a similar factor. This result mirrors the previous finding that a polymer dopant in a molecular glass-former causes similar slowdown of nucleation and growth. These results indicate that nucleation and growth in a deeply supercooled liquid are both mobility-limited, and a dopant mainly functions as a mobility modifier (enhancer or suppressor depending on the dopant). The common surfactants tested are all mobility enhancers and destabilize the amorphous drug, and this negative effect must be managed using stabilizers such as polymers. The effect of surfactants on nucleation can be predicted from the effect on crystal growth and the crystallization kinetics of the pure system, using the same principle previously established for drug-polymer systems. We show how the independently measured nucleation and growth rates enable predictions of the overall crystallization rates.
Collapse
Affiliation(s)
| | | | | | - Torsten Stelzer
- Department of Pharmaceutical Sciences, University of Puerto Rico, Medical Sciences Campus, San Juan, Puerto Rico 00936, United States.,Crystallization Design Institute, Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico 00926, United States
| | - Geoff G Z Zhang
- Drug Product Development, Research and Development, AbbVie Inc., North Chicago, Illinois 60064, United States
| | | |
Collapse
|
17
|
Recent advances in drug polymorphs: Aspects of pharmaceutical properties and selective crystallization. Int J Pharm 2022; 611:121320. [PMID: 34843866 DOI: 10.1016/j.ijpharm.2021.121320] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 11/02/2021] [Accepted: 11/23/2021] [Indexed: 12/27/2022]
Abstract
Drug polymorphism, an established term used to describe the phenomenon that a drug can exist in different crystalline phases, has attracted great interests in pharmaceutical field in consideration of its important role in affecting the pharmaceutical performance of oral formulations. This paper presents an overview of recent advances in the research on polymorphic drug systems including understandings on nucleation, crystal growth, dissolution, mechanical properties, polymorphic transformation, etc. Moreover, new strategies and mechanisms in the control of polymorphic forms are also highlighted in this review. Furthermore, challenges and trends in the development of polymorphic drugs are briefly discussed, aiming at developing effective and efficient pharmaceutical formulations containing the polymorphic drugs.
Collapse
|
18
|
Han J, Li L, Su M, Heng W, Wei Y, Gao Y, Qian S. Deaggregation and Crystallization Inhibition by Small Amount of Polymer Addition for a Co-Amorphous Curcumin-Magnolol System. Pharmaceutics 2021; 13:pharmaceutics13101725. [PMID: 34684018 PMCID: PMC8540313 DOI: 10.3390/pharmaceutics13101725] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/23/2021] [Accepted: 10/13/2021] [Indexed: 12/31/2022] Open
Abstract
Different from previously reported co-amorphous systems, a co-amorphous curcumin-magnolol (CUR-MAG CM) system, as compared with its crystalline counterparts, exhibited decreased dissolution due to its aggregation during dissolution. The main purpose of the present study is to deaggregate CUR-MAG CM to optimize drug dissolution and explore the deaggregation mechanism involved. Herein, a small amount of polymer (HPMC, HPC, and PVP K30) was co-formulated at 5% (w/w) with CUR-MAG CM as ternary co-amorphous systems. The polymer addition changed the surface properties of CUR-MAG CM including improved water wettability enhanced surface free energy, and hence exerted a deaggregating effect. As a result, the ternary co-amorphous systems showed faster and higher dissolution as compared with crystalline CUR/MAG and CUR-MAG CM. In addition, the nucleation and crystal growth of dissolved CUR and MAG molecules were significantly inhibited by the added polymer, maintaining a supersaturated concentration for a long time. Furthermore, polymer addition increased the Tg of CUR-MAG CM, potentially involving molecular interactions and inhibiting molecular mobility, resulting in enhanced physical stability under 25 °C/60% RH and 40 °C/75% RH conditions. Therefore, this study provides a promising strategy to optimize the dissolution and physical stability of co-amorphous systems by deaggregation and crystallization inhibition via adding small amounts of polymers.
Collapse
Affiliation(s)
| | | | | | | | | | - Yuan Gao
- Correspondence: (Y.G.); (S.Q.); Tel.: +86-25-83379418 (Y.G.); +86-139-1595-7175 (S.Q.)
| | - Shuai Qian
- Correspondence: (Y.G.); (S.Q.); Tel.: +86-25-83379418 (Y.G.); +86-139-1595-7175 (S.Q.)
| |
Collapse
|
19
|
Newman A, Zografi G. What Are the Important Factors That Influence API Crystallization in Miscible Amorphous API-Excipient Mixtures during Long-Term Storage in the Glassy State? Mol Pharm 2021; 19:378-391. [PMID: 34378939 DOI: 10.1021/acs.molpharmaceut.1c00519] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this Perspective, the authors examine the various factors that should be considered when attempting to use miscible amorphous API-excipient mixtures (amorphous solid dispersions and coamorphous systems) to prevent the solid-state crystallization of API molecules when isothermally stored for long periods of time (a year or more) in the glassy state. After presenting an overview of a variety of studies designed to obtain a better understanding of possible mechanisms by which amorphous API undergo physical instability and by which excipients generally appear to inhibit API crystallization from the amorphous state, we examined 78 studies that reported acceptable physical stability of such systems, stored below Tg under "dry" conditions for one year or more. These results were examined more closely in terms of two major contributing factors: the degree to which a reduction in diffusional molecular mobility and API-excipient molecular interactions operates to inhibit crystallization. These two parameters were chosen because the data are readily available in early development to help compare amorphous systems. Since Tg - T = 50 K is often used as a rule of thumb for the establishing the minimum value below Tg required to reduce diffusional mobility to a period of years, it was interesting to observe that 30 of the 78 studies still produced significant physical stability at values of Tg - T < 50 K (3-47 °C), suggesting that factors besides diffusive molecular mobility likely contribute. A closer look at the Tg - T < 50 systems shows that hydrogen bonding, proton transfer, disruption of API-API self-associations (such as dimers), and possible π-π stacking were reported for most of the systems. In contrast, five crystallized systems that were monitored for a year or more were also examined. These systems exhibited Tg - T values of 9-79, with three of them exhibiting Tg - T < 50. For these three samples, none displayed molecular interactions by infrared spectroscopy. A discussion on the impact of relative humidity on long-term crystallization in the glass was included, with attention paid to the relative water vapor sorption by various excipients and effects on diffusive mobility and molecular interactions between API and excipient.
Collapse
Affiliation(s)
- Ann Newman
- Seventh Street Development Group, Kure Beach, North Carolina 28449, United States
| | - George Zografi
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| |
Collapse
|