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Vijayakumar J, Goudarzi NM, Eeckhaut G, Schrijnemakers K, Cnudde V, Boone MN. Characterization of Pharmaceutical Tablets by X-ray Tomography. Pharmaceuticals (Basel) 2023; 16:ph16050733. [PMID: 37242516 DOI: 10.3390/ph16050733] [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: 04/02/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Solid dosage forms such as tablets are extensively used in drug administration for their simplicity and large-scale manufacturing capabilities. High-resolution X-ray tomography is one of the most valuable non-destructive techniques to investigate the internal structure of the tablets for drug product development as well as for a cost effective production process. In this work, we review the recent developments in high-resolution X-ray microtomography and its application towards different tablet characterizations. The increased availability of powerful laboratory instrumentation, as well as the advent of high brilliance and coherent 3rd generation synchrotron light sources, combined with advanced data processing techniques, are driving the application of X-ray microtomography forward as an indispensable tool in the pharmaceutical industry.
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Affiliation(s)
- Jaianth Vijayakumar
- Centre for X-ray Tomography (UGCT), Ghent University, Proeftuinstraat 86/N3, 9000 Gent, Belgium
- Department of Physics and Astronomy, Radiation Physics, Ghent University, Proeftuinstraat 86/N12, 9000 Gent, Belgium
| | - Niloofar Moazami Goudarzi
- Centre for X-ray Tomography (UGCT), Ghent University, Proeftuinstraat 86/N3, 9000 Gent, Belgium
- Department of Physics and Astronomy, Radiation Physics, Ghent University, Proeftuinstraat 86/N12, 9000 Gent, Belgium
| | - Guy Eeckhaut
- Janssen Pharmaceutica, Turnhoutseweg 30, 2340 Beerse, Belgium
| | | | - Veerle Cnudde
- Centre for X-ray Tomography (UGCT), Ghent University, Proeftuinstraat 86/N3, 9000 Gent, Belgium
- Pore-Scale Processes in Geomaterials Research (PProGRess), Department of Geology, Ghent University, Krijgslaan 281/S8, 9000 Gent, Belgium
- Environmental Hydrogeology, Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8A, 3584 CD Utrecht, The Netherlands
| | - Matthieu N Boone
- Centre for X-ray Tomography (UGCT), Ghent University, Proeftuinstraat 86/N3, 9000 Gent, Belgium
- Department of Physics and Astronomy, Radiation Physics, Ghent University, Proeftuinstraat 86/N12, 9000 Gent, Belgium
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Zhang H, Tian S, Zhu Y, Zhong W, Qiu R, Han L. Insight into the adsorption isotherms and kinetics of Pb (II) on pellet biochar via in-situ non-destructive 3D visualization using micro-computed tomography. BIORESOURCE TECHNOLOGY 2022; 358:127406. [PMID: 35660457 DOI: 10.1016/j.biortech.2022.127406] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/27/2022] [Accepted: 05/30/2022] [Indexed: 06/15/2023]
Abstract
The micro-CT technique was applied in adsorption visualization of Pb (II) on the pellet biochar derived from wheat straw to provide information on understanding the complex heavy metal-biochar interaction during the process. The 3D distribution of Pb (II) on the biochar was well in line with the results of isothermal and kinetic adsorption experiments as well as those of simulation with Langmuir and Weber-Morris intraparticle diffusion (IPD) models. It was shown that Pb (II) was preferentially adsorbed on the surface of the biochar at an initial Pb (II) concentration of 50 mg/L. However, at a higher initial concentration of 100 mg/L, the adsorption process occurred in a two-stage regime, namely rapid surface adsorption followed by slow intraparticle diffusion. This research offered a new way for investigation of the complex adsorption behavior of heavy metals on biochar, as well as construction and optimization of related adsorption models.
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Affiliation(s)
- Hehu Zhang
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Sicong Tian
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Ying Zhu
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Weizheng Zhong
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Rongbin Qiu
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Lujia Han
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China.
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Redefinition to bilayer osmotic pump tablets as subterranean river system within mini-earth via three-dimensional structure mechanism. Acta Pharm Sin B 2022; 12:2568-2577. [PMID: 35646529 PMCID: PMC9136608 DOI: 10.1016/j.apsb.2021.11.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/11/2021] [Accepted: 10/24/2021] [Indexed: 11/24/2022] Open
Abstract
Defining and visualizing the three-dimensional (3D) structures of pharmaceuticals provides a new and important tool to elucidate the phenomenal behavior and underlying mechanisms of drug delivery systems. The mechanism of drug release from complex structured dosage forms, such as bilayer osmotic pump tablets, has not been investigated widely for most solid 3D structures. In this study, bilayer osmotic pump tablets undergoing dissolution, as well as after dissolution in a desiccated solid state were examined, and visualized by synchrotron radiation micro-computed tomography (SR-μCT). In situ formed 3D structures at different in vitro drug release states were characterized comprehensively. A distinct movement pattern of NaCl crystals from the push layer to the drug layer was observed, beneath the semi-permeable coating in the desiccated tablet samples. The 3D structures at different dissolution time revealed that the pushing upsurge in the bilayer osmotic pump tablet was directed via peripheral "roadways". Typically, different regions of the osmotic front, infiltration region, and dormant region were classified in the push layer during the dissolution of drug from tablet samples. According to the observed 3D microstructures, a "subterranean river model" for the drug release mechanism has been defined to explain the drug release mechanism.
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Zhang H, Li Y, Xie R, Zhu Y, Shi S, Yang Z, Han L. A particle scale micro-CT approach for 3D in-situ visualizing the Pb (II) adsorption in different crop residue-derived chars. BIORESOURCE TECHNOLOGY 2022; 344:126269. [PMID: 34740798 DOI: 10.1016/j.biortech.2021.126269] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/27/2021] [Accepted: 10/29/2021] [Indexed: 06/13/2023]
Abstract
It is crucial to develop a new characterization method to provide insight into the complex adsorption mechanism of crop residue-derived char. This study established a novel 3D in-situ visualization method for qualitative and semi-quantitative characterizing Pb (II) adsorption profiles in crop residue-derived char particles. First, coconut shell activated carbon, rice husk biochar, and wheat biochar after Pb (II) adsorption was used for X-ray micro-CT imaging. Then, the K-means clustering algorithm was developed for segmenting the volume image of samples, and the optimized segmentation thresholds for the 3 samples were 6000HU, 7000HU, and 1300HU, respectively. The rendered images for qualitative illustrating the adsorption profile of Pb (II) were presented. Finally, based on the derived quantitative formula, the Pb (II) distribution in the biochar particle was presented for the first time. This method provided a new perspective and methodology for analysis and simulations of the adsorption behavior of heavy metals onto chars.
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Affiliation(s)
- Hehu Zhang
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Yanfei Li
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Ruyue Xie
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Ying Zhu
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Suan Shi
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Zengling Yang
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China
| | - Lujia Han
- Engineering Laboratory for Agro Biomass Recycling & Valorizing, College of Engineering, China Agricultural University, Box 191, Beijing 100083, China.
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Bridging the structure gap between pellets in artificial dissolution media and in gastro-intestinal tract in rats. Acta Pharm Sin B 2022; 12:326-338. [PMID: 35127389 PMCID: PMC8799995 DOI: 10.1016/j.apsb.2021.05.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 12/02/2022] Open
Abstract
Changes in structure of oral solid dosage forms (OSDF) elementally determine the drug release and its therapeutic effects. In this research, synchrotron radiation X-ray micro-computed tomography was utilized to visualize the 3D structure of enteric coated pellets recovered from the gastrointestinal tract of rats. The structures of pellets in solid state and in vitro compendium media were measured. Pellets in vivo underwent morphological and structural changes which differed significantly from those in vitro compendium media. Thus, optimizations of the dissolution media were performed to mimic the appropriate in vivo conditions by introducing pepsin and glass microspheres in media. The sphericity, pellet volume, pore volume and porosity of the in vivo esomeprazole magnesium pellets in stomach for 2 h were recorded 0.47, 1.55 × 108 μm3, 0.44 × 108 μm3 and 27.6%, respectively. After adding pepsin and glass microspheres, the above parameters in vitro reached to 0.44, 1.64 × 108 μm3, 0.38 × 108 μm3 and 23.0%, respectively. Omeprazole magnesium pellets behaved similarly. The structural features of pellets between in vitro media and in vivo condition were bridged successfully in terms of 3D structures to ensure better design, characterization and quality control of advanced OSDF.
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Sun X, Wu L, Maharjan A, Sun H, Hu X, York P, Sun H, Zhang J, Yin X. Static and dynamic structural features of single pellets determine the release behaviors of metoprolol succinate sustained-release tablets. Eur J Pharm Sci 2020; 149:105324. [PMID: 32311456 DOI: 10.1016/j.ejps.2020.105324] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 03/24/2020] [Accepted: 03/24/2020] [Indexed: 11/19/2022]
Abstract
The multiple-unit sustained-release (MUSR) dosage forms containing numerous sustained-release subunits present a reliable choice for oral formulation of controlled release systems. As a typical MUSR, the metoprolol succinate sustained-release tablet is an advanced system with limited researches devoted to relating its structure to the drug release phase other than the preparation process and modulation to the release behaviors. This research details a three-dimension method to image the internal structure and detail drug release features of commercial metoprolol succinate sustained-release tablets and component individual single pellets. As such, a new perspective for MUSR dosage form is provided. Using high energy synchrotron radiation X-ray microcomputed tomography (SR-μCT), the in-situ structure parameters were obtained nondestructively. It was demonstrated that the average number of spherical pellets in a tablet was 853 ± 12 (n = 3). The average volume of the pellets was 0.09 ± 0.01 mm3, the diameter was 0.55 ± 0.03 mm, and the sphericity was 0.87 ± 0.06. These data reflected the numerical features of pellets in MUSR tablets, which were helpful for reverse engineering to MUSR. Based on the three dimensional model generated by image processing and analysis software, the pellet structures were divided into three layers of typical depot sustained release system: pellet core, drug-containing layer and outer film. The dynamic structural features determined refer to the changes of structures in pellets during in vitro drug release, with evidence that the coating layer on the pellets maintained a spherical morphology whilst numerous valleys appeared on the surface. The material constitution and distribution in coating layer were evaluated by synchrotron radiation-based Fourier transform infrared mapping and results indicated a composition of hydroxypropyl methylcellulose dispersed in ethyl cellulose. Knowledge of these structural characteristics confirmed that the mechanism of sustained drug release was membrane controlled and consistent with the drug release profiles. In conclusion, the structural investigation provided knowledge of the intrinsic quality of metoprolol succinate sustained-release tablets and offers guidance for reverse engineering of MUSR.
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Affiliation(s)
- Xian Sun
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Wu
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Abi Maharjan
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hongyu Sun
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xiaoxiao Hu
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China
| | - Peter York
- Institute of Pharmaceutical Innovation, University of Bradford, Bradford, West Yorkshire BD7 1DP, United Kingdom
| | - Huimin Sun
- NMPA, Key Laboratory of Excipient Quality Research and Evaluation, Beijing 100050, China.
| | - Jiwen Zhang
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; University of Chinese Academy of Sciences, Beijing 100049, China; NMPA, Key Laboratory of Excipient Quality Research and Evaluation, Beijing 100050, China.
| | - Xianzhen Yin
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201210, China; NMPA, Key Laboratory of Excipient Quality Research and Evaluation, Beijing 100050, China.
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Zhang L, Shakya S, Wu L, Wang J, Jin G, Sun H, Yin X, Sun L, Zhang J. Multi-dimensional visualization for the morphology of lubricant stearic acid particles and their distribution in tablets. Asian J Pharm Sci 2020; 15:60-68. [PMID: 32175018 PMCID: PMC7066036 DOI: 10.1016/j.ajps.2019.01.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 11/18/2018] [Accepted: 01/10/2019] [Indexed: 11/20/2022] Open
Abstract
The shapes of particles and their distribution in tablets, controlled by pretreatment and tableting process, determine the pharmaceutical performance of excipient like lubricant. This study aims to provide deeper insights to the relationship of the morphology and spatial distribution of stearic acid (SA) with the lubrication efficiency, as well as the resulting tablet property. Unmodified SA particles as flat sheet-like particles were firstly reprocessed by emulsification in hot water to obtain the reprocessed SA particles with spherical morphology. The three-dimensional (3D) information of SA particles in tablets was detected by a quantitative and non-invasive 3D structure elucidation technique, namely, synchrotron radiation X-ray micro-computed tomography (SR-µCT). SA particles in glipizide tablets prepared by using unmodified SA (GUT), reprocessed SA (GRT), as well as reference listed drug (RLD) of glipizide tablets were analyzed by SR-µCT. The results showed that the reprocessed SA with better flowability contributed to similarity of breaking forces between that of GRT and RLD. SA particles in GRT were very similar to those in RLD with uniform morphology and particle size, while SA particles in GUT were not evenly distributed. These findings not only demonstrated the feasibility of SR-µCT as a new method in revealing the morphology and spatial distribution of excipient in drug delivery system, but also deepened insights of solid dosage form design into a new scale by powder engineering.
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Affiliation(s)
- Liu Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.,Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shailendra Shakya
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Li Wu
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Jiangtao Wang
- Weihai Disu Pharmaceutical Manufacturer, Weihai 264200, China
| | - Guanghui Jin
- Weihai Disu Pharmaceutical Manufacturer, Weihai 264200, China
| | - Huimin Sun
- National Institutes for Food and Drug Control, Beijing 100050, China
| | - Xianzhen Yin
- Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Lixin Sun
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jiwen Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.,Center for Drug Delivery Systems, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
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