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Pu F, Wang S, Yang J, Yang J, Hong Y, Guo Y, He J, Lu S. Study on co-amorphous emerging solubilization behavior after gelation during dissolution: The importance of complexation and anti-crystallization. Int J Pharm 2024; 664:124592. [PMID: 39159855 DOI: 10.1016/j.ijpharm.2024.124592] [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: 05/31/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 08/21/2024]
Abstract
Co-amorphous (CM) is a promising technology for enhancing the aqueous solubility of insoluble drugs, but the gelation phenomenon has often occurred during the dissolution process and seriously threatened their solubility/dissolution performance. Therefore, it's quite important to design favorable CM systems to alleviate or even avoid the adverse effects of gelation phenomenon. In this study, CM systems of taxifolin (TAX) and oxymatrine (OMT) (TAX-OMT CMs) were constructed to improve the solubility and dissolution properties of TAX. Interestingly, TAX-OMT CMs gradually aggregated and obviously gelled during dissolution, but the solubility and dissolution of TAX in TAX-OMT CMs were significantly enhanced compared to crystalline TAX. Consequently, the underlying solubilization mechanisms of TAX-OMT CMs after gelation were systematically explored. For one thing, the complexation between the two components in TAX-OMT CMs was verified by phase solubility, fluorescence spectroscopy and isothermal titration calorimetry. For another, the residual solids of TAX-OMT CMs after dissolution evaluation were thoroughly characterized by means of powder X-ray diffraction, fourier transform infrared spectroscopy, scanning electron microscopy, which showed the anti-crystallization property of TAX-OMT CMs. Furthermore, molecular simulation demonstrated the intermolecular interactions of TAX-OMT CMs alone and TAX-OMT complexes in aqueous solution. Finally, pharmacokinetics study in rats suggested that the bioavailability of TAX in TAX-OMT CM (1:2) was approximately 5.5-fold higher than that of crystalline TAX after oral administration. Collectively, this study reveals the importance of complexation and anti-crystallization effects of CM systems on maintaining solubilization behavior after gelation, providing an effective strategy to improve the absorption performance of pharmaceutical CM systems.
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Affiliation(s)
- Feiyan Pu
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China
| | - Shiqi Wang
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China
| | - Juanzi Yang
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China
| | - Jinhao Yang
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China
| | - Yi Hong
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Hubei Shizhen Laboratory, Wuhan, 430065, PR China
| | - Yujie Guo
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Hubei Shizhen Laboratory, Wuhan, 430065, PR China.
| | - Jianhua He
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Hubei Shizhen Laboratory, Wuhan, 430065, PR China.
| | - Shan Lu
- School of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Research Center for Pharmaceutical Preparations, Hubei University of Chinese Medicine, Wuhan 430065, PR China; Hubei Shizhen Laboratory, Wuhan, 430065, PR China.
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2
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Hu J, Zheng S, Xu J, Feng R, Li T, Wang T, Zhang W, Liu W, Saleem F. Innovative Synthesis of Au Nanoparticle-Trapped Flexible Macrocrystals: Achieving Stable Black Crystal Wires with Broadband Absorption. SMALL METHODS 2024:e2400871. [PMID: 39155822 DOI: 10.1002/smtd.202400871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/06/2024] [Indexed: 08/20/2024]
Abstract
In optical materials, the development of absorbers for a wide spectrum is a focal point of research. A pivotal challenge lies in ensuring the stability and durability of optical absorbers, particularly at elevated temperatures. This study introduces a novel approach to creating absorbers with diverse colors, focusing on the synthesis and properties of black crystal wires. In contrast to black gold nanoparticle (Au NP) precipitates, which change color within hours under similar conditions, the method involves strategically trapping Au NPs within defects during the growth of single crystals. This results in black crystal wires that not only exhibit broadband absorption but also maintain exceptional stability even under prolonged exposure to high temperatures. The method also involves the controlled synthesis of colorless and red crystal wires. As a proof of concept, these stable black Au crystal wires demonstrate superior performance in photothermal conversion applications. The methodology, derived from the crystal growth process, presents a defect template that offers a novel approach to material design. Furthermore, these unique crystals, available in various colors, hold significant promise for a range of unexplored applications.
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Affiliation(s)
- Jiuyi Hu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Shaohui Zheng
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Jiayu Xu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Ri Feng
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Tingting Li
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Ting Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Weina Zhang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Wenjing Liu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Faisal Saleem
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing, 211816, P. R. China
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3
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Zografi G, Newman A, Shalaev E. Structural Features of the Glassy State and Their Impact on the Solid-State Properties of Organic Molecules in Pharmaceutical Systems. J Pharm Sci 2024:S0022-3549(24)00186-2. [PMID: 38768756 DOI: 10.1016/j.xphs.2024.05.014] [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: 03/19/2024] [Revised: 05/13/2024] [Accepted: 05/14/2024] [Indexed: 05/22/2024]
Abstract
This paper reviews the structure and properties of amorphous active pharmaceutical ingredients (APIs), including small molecules and proteins, in the glassy state (below the glass transition temperature, Tg). Amorphous materials in the neat state and formulated with excipients as miscible amorphous mixtures are included, and the role of absorbed water in affecting glass structure and stability has also been considered. We defined the term "structure" to indicate the way the various molecules in a glass interact with each other and form distinctive molecular arrangements as regions or domains of varying number of molecules, molecular packing, and density. Evidence is presented to suggest that such systems generally exist as heterogeneous structures made up of high-density domains surrounded by a lower density arrangement of molecules, termed the microstructure. It has been shown that the method of preparation and the time frame for handling and storage can give rise to variable glass structures and varying physical properties. Throughout this paper, examples are given of theoretical, computer simulation, and experimental studies which focus on the nature of intermolecular interactions, the size of heterogeneous higher density domains, and the impact of such systems on the relative physical and chemical stability of pharmaceutical systems.
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Affiliation(s)
- George Zografi
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, United States
| | - Ann Newman
- Seventh Street Development Group LLC, Kure Beach, NC, United States.
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Hao H, Zhang Y, Hu X, Guo W, Yang C, Wang J. Cocrystallization of 5-fluorouracil with gallic acid: A novel 5-fluorouracil cocrystal displaying synergistic anti-tumor activity both in oral and intraperitoneal injection administration. Eur J Pharm Biopharm 2023; 187:12-23. [PMID: 37031731 DOI: 10.1016/j.ejpb.2023.04.001] [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: 01/18/2023] [Revised: 03/21/2023] [Accepted: 04/03/2023] [Indexed: 04/11/2023]
Abstract
Gallic acid (GA) is a naturally occurring polyphenolic compound exhibiting anti-tumor activity. To clarify the capability of GA in optimizing the in vitro/in vivo properties of the first line anti-tumor drug 5-fluorouracil (5-FU) and achieve synergistically enhanced anti-tumor activity, a novel cocrystal hydrate of 5-FU-GA-H2O was successfully screened and characterized based on various spectroscopic and experimental analysis including Fourier transform infrared spectroscopy (FT-IR), Raman spectra (Raman), powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC), thermogravimetric (TG) and scanning electric microscope (SEM) techniques. The results suggested the existence of hydrogen bonding interactions between C=O group of 5-FU and O-H group of GA. Although the dissolution rate and solubility of 5-FU-GA-H2O cocrystal were slowed and lowered compared with that of 5-FU, respectively, the membrane permeability was enhanced for cocrystal compared with that of intact 5-FU and physical mixture (PM) of 5-FU and GA. For the cocrystal, the cumulative amount per unit area of permeated 5-FU in the first 10 h was 2.56 and 9.97 times of that of pure 5-FU and PM, respectively, in the case that transmembrane behavior of 5-FU depended on the type of solution from which the powder was dissolved. Meanwhile, improvement on oral bioavailability by co-crystallization was observed; AUC0-t of cocrystal was 2.78-fold higher than that of 5-FU. Furthermore, the cocrystal displayed a superior cytotoxic activity on 4T1 mouse breast cancer cells compared with pure 5-FU and even the PM. It was confirmed that the cocrystal solution induced higher autophagic flux than those of 5-FU and PM in 4T1 cell, suggesting that autophagy rather than apoptosis mainly mediated cell death. The obvious difference of tumor inhibition activity between PM and cocrystal in intraperitoneal injection administration indicated that some of the interactions formed in the solid cocrystal could retain in solution in some way. Benefiting from synergistic cytotoxicity, drug efficacy in vivo was enhanced through injection administration of solution from which cocrystal was dissolved.
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Affiliation(s)
- Han Hao
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang 050017, People's Republic of China
| | - Yao Zhang
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang 050017, People's Republic of China
| | - Xiaoxiao Hu
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang 050017, People's Republic of China
| | - Wei Guo
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang 050017, People's Republic of China
| | - Caiqin Yang
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang 050017, People's Republic of China
| | - Jing Wang
- School of Pharmacy, Key Laboratory of Innovative Drug Development and Evaluation, Hebei Medical University, Shijiazhuang 050017, People's Republic of China.
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5
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Li C, Du P, Zhou M, Yang L, Zhang H, Wang J, Yang C. Spectroscopic Methodology and Molecular Docking Studies on Changes in Binding Interaction of Felodipine with Bovine Serum Albumin Induced by Cocrystallization with β-Resorcylic Acid. Chem Pharm Bull (Tokyo) 2020; 68:946-953. [PMID: 32999146 DOI: 10.1248/cpb.c20-00212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In the present study, a novel cocrystal of felodipine (FEL) and β-resorcylic acid (βRA) was developed. We specially focused on the change of binding pattern with bovine serum albumin (BSA) induced by cocrystallization of FEL with βRA. The solid characterizations and density functional theory (DFT) simulation verified that FEL-βRA cocrystal formed in equimolar ratio (1 : 1 M ratio) through C=O…H-O hydrogen bond between C=O group in FEL and O-H group in βRA. The binding interactions between FEL-βRA system and BSA were studied using fluorescence spectral and molecular docking methods. Two guest molecule systems, including a physical mixture of FEL and βRA and FEL-βRA cocrystal were performed binding to BSA in molecular docking. According to the Kb and binding energy, the supramolecular form of FEL-βRA system was retained during binding to BSA. Molecular docking simulation suggested that FEL and its cocrystal inserted into the subdomain IIIA (site II') of BSA. The interactions between FEL and BSA including hydrogen bonding with ASN390 residue and intermolecular hydrophobic interactions with LEU429 and LEU452 residues. However, the size of supramolecular FEL-βRA better matched that of active cavity of BSA; the cocrystal is closely bound to BSA through hydrogen bonding with ASN390 residue and intermolecular hydrophobic interactions with LEU429, VAL432, LEU452 and ILE387 residues. This change on binding affinity of FEL to BSA induced by cocrystallization with βRA provided theoretical basis to evaluate the transportation, distribution and metabolism of cocrystal drug.
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Affiliation(s)
- Congwei Li
- School of Pharmacy, Hebei Medical University
| | - Pengfei Du
- School of Pharmacy, Hebei Medical University
| | - Meilin Zhou
- School of Pharmacy, Hebei Medical University
| | - Liuxin Yang
- School of Pharmacy, Hebei Medical University
| | | | - Jing Wang
- School of Pharmacy, Hebei Medical University
| | - Caiqin Yang
- School of Pharmacy, Hebei Medical University
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Han J, Wei Y, Lu Y, Wang R, Zhang J, Gao Y, Qian S. Co-amorphous systems for the delivery of poorly water-soluble drugs: recent advances and an update. Expert Opin Drug Deliv 2020; 17:1411-1435. [DOI: 10.1080/17425247.2020.1796631] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Jiawei Han
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Yuanfeng Wei
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Yan Lu
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Runze Wang
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Jianjun Zhang
- School of Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Yuan Gao
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
| | - Shuai Qian
- School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, P.R. China
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7
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Guo W, Li C, Du P, Wang Y, Zhao S, Wang J, Yang C. Thermal properties of drug polymorphs: A case study with felodipine form I and form IV. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.04.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Heng W, Su M, Cheng H, Shen P, Liang S, Zhang L, Wei Y, Gao Y, Zhang J, Qian S. Incorporation of Complexation into a Coamorphous System Dramatically Enhances Dissolution and Eliminates Gelation of Amorphous Lurasidone Hydrochloride. Mol Pharm 2019; 17:84-97. [DOI: 10.1021/acs.molpharmaceut.9b00772] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | - Linghe Zhang
- Department of Chemistry, Smith College, Northampton, Massachusetts 01063, United States
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9
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Cruz-Angeles J, Videa M, Martínez LM. Highly Soluble Glimepiride and Irbesartan Co-amorphous Formulation with Potential Application in Combination Therapy. AAPS PharmSciTech 2019; 20:144. [PMID: 30887140 DOI: 10.1208/s12249-019-1359-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 03/03/2019] [Indexed: 11/30/2022] Open
Abstract
One-third of the population of the USA suffers from metabolic syndrome (MetS). Treatment of patients with MetS regularly includes drugs prescribed simultaneously to treat diabetes and cardiovascular diseases. Therefore, the development of novel multidrug formulations is recommended. However, the main problem with these drugs is their low solubility. The use of binary co-amorphous systems emerges as a promising strategy to increase drug solubility. In the present study, irbesartan (IBS) and glimepiride (GMP), class II active pharmaceutical ingredients (API), widely used in the treatment of arterial hypertension and diabetes, were selected to develop a novel binary co-amorphous system with remarkable enhancement in the dissolution of both APIs. The phase diagram of IBS-GMP was constructed and co-amorphous systems were prepared by melt-quench, in a wide range of compositions. Dissolution profile (studied at pH 1.2 and 37°C for mole fractions 0.01, 0.1, and 0.5) demonstrated that the xGMP = 0.01 formulation presents the highest enhancement in its dissolution. GMP went from being practically insoluble to reach 3.9 ± 0.9 μg/mL, and IBS showed a 12-fold increment with respect to the dissolution of its crystalline form. Infrared studies showed that the increase in the dissolution profile is related to the intermolecular interactions (hydrogen bonds), which were dependent of composition. Results of structural and thermal characterization performed by XRD and DSC showed that samples have remained in amorphous state for more than 10 months of storage. This work contributes to the development of a highly soluble co-amorphous drugs with potential used in the treatment of MetS.
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Wu W, Wang Y, Löbmann K, Grohganz H, Rades T. Transformations between Co-Amorphous and Co-Crystal Systems and Their Influence on the Formation and Physical Stability of Co-Amorphous Systems. Mol Pharm 2019; 16:1294-1304. [PMID: 30624075 DOI: 10.1021/acs.molpharmaceut.8b01229] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The formation of co-amorphous and co-crystal systems are attractive formulation strategies for poorly water-soluble drugs. Intermolecular interactions between the drug and the coformer(s) play an important role in the formation of both systems, making the investigation of transformations between the two systems specifically interesting. The aim of this study thus was to investigate the transformation between the two systems and its influence on the formation and physical stability of co-amorphous systems. Carbamazepine (CBZ) along with benzoic acid, maleic acid, succinic acid, tartaric acid, saccharin, and nicotinamide were used as materials. First, CBZ- co-former co-crystals were prepared. Then the co-crystals and CBZ- co-former physical mixtures were ball milled to investigate the possible co-amorphization process. The XRPD and DSC results showed that CBZ and coformers tended to maintain (co-crystals as the starting material) or form co-crystals (physical mixtures as the starting material), rather than to form co-amorphous systems. Next, co-amorphization from CBZ- co-former physical mixtures via quench cooling was studied. While co-amorphous systems were obtained, the physical stability of these was very low, and the samples recrystallized to either co-crystal forms or the individual components. In conclusion, a possible transformation between the two systems was confirmed, but the resulting co-amorphous systems were highly unstable.
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Affiliation(s)
- Wenqi Wu
- Department of Pharmacy , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark
| | - Yixuan Wang
- Department of Pharmacy , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark.,School of Functional Food and Wine , Shenyang Pharmaceutical University , Wenhua Rd. 103 , Shenyang 110016 , China
| | - Korbinian Löbmann
- Department of Pharmacy , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark
| | - Holger Grohganz
- Department of Pharmacy , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark
| | - Thomas Rades
- Department of Pharmacy , University of Copenhagen , Universitetsparken 2 , 2100 Copenhagen , Denmark.,Pharmaceutical Sciences Laboratory, Faculty of Science and Engineering , Åbo Akademi University , 20521 Turku , Finland
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Zhang M, Xiong X, Suo Z, Hou Q, Gan N, Tang P, Ding X, Li H. Co-amorphous palbociclib–organic acid systems with increased dissolution rate, enhanced physical stability and equivalent biosafety. RSC Adv 2019; 9:3946-3955. [PMID: 35518078 PMCID: PMC9060427 DOI: 10.1039/c8ra09710k] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/23/2019] [Indexed: 12/31/2022] Open
Abstract
The preparation of co-amorphous drug systems by adding a small molecular excipient is a promising formulation in the modern pharmaceutical industry to improve the solubility, dissolution rate, and bioavailability of poorly soluble drugs. In this study, palbociclib co-amorphous systems with organic acids (succinic, tartaric, citric, and malic acid) at molar ratios of 1 : 1 were prepared by co-milling and characterized by differential scanning calorimetry (DSC), fourier transform infrared spectroscopy (FTIR) and solid-state nuclear magnetic resonance (SS-NMR). These solid-state investigations have confirmed the formation of co-amorphous salts between PAL and organic acids. The solubility, dissolution rate and stability of the four co-amorphous drug systems were significantly improved compared with these of crystalline and amorphous palbociclib. The biosafety of the co-amorphous drug systems was the same as that of palbociclib without affecting the efficacy of the drug and eliciting toxic side effects. These comprehensive approaches for the palbociclib–acid co-amorphous drug systems provided a theoretical basis for its clinical applications. The study of co-amorphous systems presented a safe and effective formulation technology for the development of new palbociclib solid forms with great dissolution rates, good physical stability, and high bioavailability.![]()
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Affiliation(s)
- Man Zhang
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Xinnuo Xiong
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Zili Suo
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Quan Hou
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Na Gan
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Peixiao Tang
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Xiaohui Ding
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
| | - Hui Li
- School of Chemical Engineering
- Sichuan University
- Chengdu
- China
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12
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Wang Z, Sun M, Liu T, Gao Z, Ye Q, Tan X, Hou Y, Sun J, Wang D, He Z. Co-amorphous solid dispersion systems of lacidipine-spironolactone with improved dissolution rate and enhanced physical stability. Asian J Pharm Sci 2019; 14:95-103. [PMID: 32104442 PMCID: PMC7032115 DOI: 10.1016/j.ajps.2018.11.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/31/2018] [Accepted: 11/09/2018] [Indexed: 10/27/2022] Open
Abstract
Co-amorphous solid dispersion (C-ASD) systems have attracted great attention to improve the solubility of poorly soluble drugs, but the selection of an appropriate stabilizer to stabilize amorphous forms is still a huge challenge. Herein, C-ASD system of two clinical combined used drugs (lacidipine (LCDP) and spironolactone (SPL)) as stabilizers to each other, was prepared by solvent evaporation method. The effects of variation in molar ratio of LCDP and SPL (3:1, 1:1, 1:3, 1:6, and 1:9) on the drug release characteristics were explored. Polarized light microscopy (PLM), powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) were employed to evaluate the solid states. Prepared C-ASDs were further studied for their stability under the high humidity (RH 92.5%). Further analysis of C-ASDs via Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy confirmed that hydrogen bond interactions between the two drugs played a significant role in maintaining the stability of the C-ASDs systems. Moreover, molecular dynamic (MD) simulations provided a clear insight into the stability mechanism at the molecular level. This study demonstrated the novel drug-drug C-ASDs systems is a promising formulation strategy for improved dissolution rate and enhanced physical stability of poorly soluble drugs.
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Affiliation(s)
- Zhaomeng Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Mengchi Sun
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Tian Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zisen Gao
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Qing Ye
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiao Tan
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yanxian Hou
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jin Sun
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Dun Wang
- Key Laboratory of Structure-Based Drug Design & Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Zhonggui He
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, China
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13
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Karagianni A, Kachrimanis K, Nikolakakis I. Co-Amorphous Solid Dispersions for Solubility and Absorption Improvement of Drugs: Composition, Preparation, Characterization and Formulations for Oral Delivery. Pharmaceutics 2018; 10:pharmaceutics10030098. [PMID: 30029516 PMCID: PMC6161132 DOI: 10.3390/pharmaceutics10030098] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 02/06/2023] Open
Abstract
The amorphous solid state offers an improved apparent solubility and dissolution rate. However, due to thermodynamic instability and recrystallization tendencies during processing, storage and dissolution, their potential application is limited. For this reason, the production of amorphous drugs with adequate stability remains a major challenge and formulation strategies based on solid molecular dispersions are being exploited. Co-amorphous systems are a new formulation approach where the amorphous drug is stabilized through strong intermolecular interactions by a low molecular co-former. This review covers several topics applicable to co-amorphous drug delivery systems. In particular, it describes recent advances in the co-amorphous composition, preparation and solid-state characterization, as well as improvements of dissolution performance and absorption are detailed. Examples of drug-drug, drug-carboxylic acid and drug-amino acid co-amorphous dispersions interacting via hydrogen bonding, π−π interactions and ionic forces, are presented together with corresponding final dosage forms.
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Affiliation(s)
- Anna Karagianni
- Department of Pharmaceutical Technology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Kyriakos Kachrimanis
- Department of Pharmaceutical Technology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
| | - Ioannis Nikolakakis
- Department of Pharmaceutical Technology, School of Pharmacy, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece.
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Experimental and DFT simulation study of a novel felodipine cocrystal: Characterization, dissolving properties and thermal decomposition kinetics. J Pharm Biomed Anal 2018; 154:198-206. [DOI: 10.1016/j.jpba.2018.03.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/01/2018] [Accepted: 03/02/2018] [Indexed: 11/17/2022]
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Du S, Li WS, Wu YR, Fu Y, Yang C, Wang J. Comparison of the physical and thermodynamic stability of amorphous azelnidipine and its coamorphous phase with piperazine. RSC Adv 2018; 8:32756-32764. [PMID: 35547669 PMCID: PMC9086389 DOI: 10.1039/c8ra05535a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Accepted: 09/07/2018] [Indexed: 11/21/2022] Open
Abstract
The thermodynamic stabilities of an amorphous phase and a coamorphous phase of azelnidipine in 0.01 M HCl medium were investigated using a solution chemistry method.
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Affiliation(s)
- Shuang Du
- College of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang
- People’s Republic of China
| | - Wen Sheng Li
- College of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang
- People’s Republic of China
| | - Ya Rong Wu
- College of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang
- People’s Republic of China
| | - Yan Fu
- College of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang
- People’s Republic of China
| | - Caiqin Yang
- College of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang
- People’s Republic of China
| | - Jing Wang
- College of Pharmaceutical Sciences
- Hebei Medical University
- Shijiazhuang
- People’s Republic of China
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16
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Pang W, Lv J, Du S, Wang J, Wang J, Zeng Y. Preparation of Curcumin-Piperazine Coamorphous Phase and Fluorescence Spectroscopic and Density Functional Theory Simulation Studies on the Interaction with Bovine Serum Albumin. Mol Pharm 2017; 14:3013-3024. [PMID: 28703594 DOI: 10.1021/acs.molpharmaceut.7b00217] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In the present study, a new coamorphous phase (CAP) of bioactive herbal ingredient curcumin (CUR) with high solubilitythe was screened with pharmaceutically acceptable coformers. Besides, to provide basic information for the best practice of physiological and pharmaceutical preparations of CUR-based CAP, the interaction between CUR-based CAP and bovine serum albumin (BSA) was studied at the molecular level in this paper. CAP of CUR and piperazine with molar ratio of 1:2 was prepared by EtOH-assisted grinding. The as-prepared CAP was characterized by powder X-ray diffraction, modulated temperature differential scanning calorimetry, thermogravimetric analysis, Fourier-transform infrared, and solid-state 13C nuclear magnetic resonance. The 1:2 CAP stoichioimetry was sustained by C═O···H hydrogen bonds between the N-H group of the piperazine and the C═O group of CUR; piperazine stabilized the diketo structure of CUR in CAP. The dissolution rate of CUR-piperazine CAP in 30% ethanol-water was faster than that of CUR; the t50 values were 243.1 min for CUR and 4.378 min for CAP. Furthermore, interactions of CUR and CUR-piperazine CAP with BSA were investigated by fluorescence spectroscopy and density functional theory (DFT) calculation. The binding constants (Kb) of CUR and CUR-piperazine CAP with BSA were 10.0 and 9.1 × 103 L mol-1 at 298 K, respectively. Moreover, DFT simulation indicated that the interaction energy values of hydrogen-bonded interaction in the tryptophan-CUR and tryptophan-CUR-piperazine complex were -26.1 and -17.9 kJ mol-1, respectively. In a conclusion, after formation of CUR-piperazine CAP, the interaction forces between CUR and BSA became weaker.
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Affiliation(s)
- Wenzhe Pang
- College of Pharmaceutical Sciences, Hebei Medical University , Shijiazhuang, 050017, China
| | - Jie Lv
- College of Pharmaceutical Sciences, Hebei Medical University , Shijiazhuang, 050017, China
| | - Shuang Du
- College of Pharmaceutical Sciences, Hebei Medical University , Shijiazhuang, 050017, China
| | - Jiaojiao Wang
- College of Chemistry and Material Science, Hebei Normal University , Shijiazhuang 050024, China
| | - Jing Wang
- College of Pharmaceutical Sciences, Hebei Medical University , Shijiazhuang, 050017, China
| | - Yanli Zeng
- College of Chemistry and Material Science, Hebei Normal University , Shijiazhuang 050024, China
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