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Heidrich L, Abdelkader A, Ornik J, Castro-Camus E, Keck CM, Koch M. Terahertz Spectroscopy for Non-Destructive Solid-State Investigation of Norfloxacin in Paper Tablets after Wet Granulation. Pharmaceutics 2023; 15:1786. [PMID: 37513973 PMCID: PMC10386691 DOI: 10.3390/pharmaceutics15071786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 07/30/2023] Open
Abstract
(1) Background: Amorphous drug systems are an intensively studied approach to overcome the insufficient bioavailability of poorly soluble drugs. Here, paper tablets were studied, which were made from cellulose-based paper matrices loaded with norfloxacin. Moreover, wet granulation was introduced as an additional processing step for improving the flowability of the solids, which is necessary when considering production on an industrial scale. (2) Methods: The possible impact of the wet granulation on the crystallinity of norfloxacin was studied by examining granulated and non-granulated samples. Crystallinity investigations were performed using X-ray powder diffraction (XRD) and terahertz time-domain spectroscopy (THz TDS). (3) Results: THz TDS allowed for a more straightforward crystallinity assessment than XRD. Moreover, using THz TDS, it was possible to detect minor changes in the crystallinity of the API after the granulation, whereas this was not possible with the XRD analysis. (4) Conclusions: THz TDS results indicate a partial crystallization of norfloxacin due to the wet granulation. Depending on the formulation, THz TDS can serve as a beneficial and advantageous tool to determine the crystallinity of an API.
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Affiliation(s)
- Lara Heidrich
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
| | - Ayat Abdelkader
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
- Assiut International Center of Nanomedicine, Al-Rajhi Liver Hospital, Assiut University, Assiut 71515, Egypt
| | - Jan Ornik
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
| | - Enrique Castro-Camus
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
| | - Cornelia M Keck
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Robert-Koch-Str. 4, 35037 Marburg, Germany
| | - Martin Koch
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
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Heidrich L, Ornik J, Keck CM, Castro-Camus E, Koch M. Polyvinylpyrrolidone as co-inhibitor of crystallization of nifedipine in paper tablets. Int J Pharm 2023; 635:122721. [PMID: 36781082 DOI: 10.1016/j.ijpharm.2023.122721] [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: 11/18/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
Techniques to maintain drugs amorphous that would otherwise crystallize is an extensively studied approach to enhance the dissolution characteristics of poorly soluble drugs. However, their performance is limited by the low physical stability of the amorphous phase which can lead to recrystallization which in turn results in decreased solubility and bioavailability of the drug. In this work, the crystallinity of nifedipine loaded into a cellulose-based paper matrix, so called smartFilms, was determined by terahertz time-domain spectroscopy. By adding polyvinylpyrrolidone as an extra carrier, the capability of smartFilms to transfer nifedipine into its amorphous state improved. Moreover, the performance of the formulation to inhibit recrystallization of the amorphous drug over a period of six months increased. For formulations containing up to 10 w% drug loading and additional polyvinylpyrrolidone (nifedipine/polyvinylpyrrolidone: 4:1 mass ratio), nifedipine was found to be completely amorphous after six months of storage.
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Affiliation(s)
- Lara Heidrich
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany.
| | - Jan Ornik
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
| | - Cornelia M Keck
- Department of Pharmaceutics and Biopharmaceutics, Philipps-Universität Marburg, Robert‑Koch‑Str. 4, 35037 Marburg, Germany
| | - Enrique Castro-Camus
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
| | - Martin Koch
- Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany
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Selected Applications of Terahertz Pulses in Medicine and Industry. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12126169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
This article contains a brief summary of areas where terahertz technology is making an impact in research and industrial applications. We cover some of its uses in the pharmaceutical setting, where both imaging and spectroscopy play important roles. Medical applications are also being pursued in many research laboratories, primarily for imaging purposes and following on from the first results just over 20 years ago. The three-dimensional imaging capability of pulsed terahertz allows for the observation of tumours below the surface of tissue, such as basal cell carcinoma of skin. The recent use of the technology in studies of cultural heritage has shown to increase our understanding of the past. The power of terahertz is exemplified by the discussion on its importance in different industries, such as semiconductor circuit manufacturing and automotive assembly.
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Paiva EM, Li Q, Zaczek AJ, Pereira CF, Rohwedder JJR, Zeitler JA. Understanding the Metastability of Theophylline FIII by Means of Low-Frequency Vibrational Spectroscopy. Mol Pharm 2021; 18:3578-3587. [PMID: 34428059 DOI: 10.1021/acs.molpharmaceut.1c00476] [Citation(s) in RCA: 3] [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
While theophylline has been extensively studied with multiple polymorphs discovered, there is still currently no conclusive structure for the metastable theophylline form III. In this present work, by combining more widely used techniques such as X-ray diffraction and thermogravimetric analysis with more emerging techniques like low-frequency Raman and terahertz time-domain spectroscopy, to analyze the structure and dynamics of a crystalline system, it was possible to provide further evidence that the form III structure has a theophylline monohydrate structure with the water molecules removed. Solid-state density functional theory simulations were paramount in proving that this proposed structure is correct and explain how vibrational modes within the crystal structures feature and govern polymorphic transitions and the metastable form III. Through the insight provided by both simulated and experimental results, it was possible to decisively conclude the elusive crystal structure of theophylline form III. It was also shown that the correct space group for theophylline monohydrate is not P21/n but, in fact, Pc.
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Affiliation(s)
- Eduardo Maia Paiva
- Institute of Chemistry, State University of Campinas-Unicamp, Rua Monteiro Lobato, 290, Campinas 13083-862, SP, Brazil
| | - Qi Li
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Adam J Zaczek
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
| | - Claudete F Pereira
- Department of Fundamental Chemistry, Federal University of Pernambuco, Avenida Jornalista Aníbal Fernandes, Recife 50740-560, PE, Brazil
| | | | - J Axel Zeitler
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
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Ehiro T. Characterization of Ibuprofen-Loaded MgO by One-Step Mid- and Far-FT-IR Spectroscopy. Chem Pharm Bull (Tokyo) 2021; 69:693-697. [PMID: 34193717 DOI: 10.1248/cpb.c20-00564] [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: 11/22/2022]
Abstract
One-step mid- and far-Fourier-transform (FT)-IR spectroscopy is a facile and powerful tool that provides various information regarding chemical and crystal states. However, its potentially high applicability has not been sufficiently demonstrated. In the present study, ibuprofen (IB)-loaded MgO samples are prepared via different methods, and they are evaluated using scanning electron microscopy (SEM), thermogravimetry-differential thermal analysis (TG-DTA), X-ray diffraction analysis (XRD), N2 adsorption-desorption measurement, CO2 temperature-programmed desorption technique (CO2-TPD), and FT-IR spectroscopy. The obtained results indicate that IB becomes ionized, amorphous, and/or dispersed by using MgO. Since the CO2-TPD result shows that MgO possesses basic surfaces, it is considerable that acid-base interactions cause the above different chemical states. Furthermore, the FT-IR spectra in mid- and far-IR regions also suggest that the above physical and chemical properties of IB-loaded MgO changes through the interactions. Therefore, the characterization results suggest that one-step mid- and far-FT-IR measurements can provide valuable information regarding the chemical and crystal states.
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Affiliation(s)
- Takuya Ehiro
- Research Division of Polymer Functional Materials, Osaka Research Institute of Industrial Science and Technology
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Calvo NL, Maggio RM, Kaufman TS. Characterization of pharmaceutically relevant materials at the solid state employing chemometrics methods. J Pharm Biomed Anal 2018; 147:538-564. [DOI: 10.1016/j.jpba.2017.06.017] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 06/08/2017] [Accepted: 06/12/2017] [Indexed: 11/28/2022]
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Assessing the Detection Limit of a Minority Solid-State Form of a Pharmaceutical by 1H Double-Quantum Magic-Angle Spinning Nuclear Magnetic Resonance Spectroscopy. J Pharm Sci 2017; 106:3372-3377. [DOI: 10.1016/j.xphs.2017.07.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 07/05/2017] [Accepted: 07/18/2017] [Indexed: 01/20/2023]
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da Silva VH, Vieira FS, Rohwedder JJR, Pasquini C, Pereira CF. Multivariate quantification of mebendazole polymorphs by terahertz time domain spectroscopy (THZ-TDS). Analyst 2017; 142:1519-1524. [DOI: 10.1039/c6an02540d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An analytical method based on terahertz-time domain spectroscopy (THz-TDS) and PLS regression models to quantify mebendazole polymorphs in pharmaceutical raw material is presented.
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Affiliation(s)
- Vitor H. da Silva
- Departamento de Química Fundamental
- Universidade Federal de Pernambuco
- Recife
- Brazil
| | | | | | - Celio Pasquini
- Instituto de Química
- Universidade Estadual de Campinas
- Campinas
- Brazil
| | - Claudete F. Pereira
- Departamento de Química Fundamental
- Universidade Federal de Pernambuco
- Recife
- Brazil
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Pharmaceutical Terahertz Spectroscopy and Imaging. ADVANCES IN DELIVERY SCIENCE AND TECHNOLOGY 2016. [DOI: 10.1007/978-1-4939-4029-5_5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Takebe G, Kawada Y, Akiyama K, Takahashi H, Takamoto H, Hiramatsu M. Evaluation of Drug Crystallinity in Aqueous Suspension Using Terahertz Time‐Domain Attenuated Total Reflection Spectroscopy. J Pharm Sci 2013; 102:4065-71. [DOI: 10.1002/jps.23716] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/30/2013] [Accepted: 08/06/2013] [Indexed: 11/05/2022]
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Hisazumi J, Suzuki T, Wakiyama N, Nakagami H, Terada K. Chemical Mapping of Hydration and Dehydration Process of Theophylline in Tablets Using Terahertz Pulsed Imaging. Chem Pharm Bull (Tokyo) 2012; 60:831-6. [DOI: 10.1248/cpb.c11-00007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jin Hisazumi
- Formulation Technology Research Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd
| | - Tatsuya Suzuki
- Formulation Technology Research Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd
| | - Naoki Wakiyama
- Formulation Technology Research Laboratories, Pharmaceutical Technology Division, Daiichi Sankyo Co., Ltd
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