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Gomi M, Mizutani N, Senoo R, Matsubara N, Watanabe A, Maruyama M, Kimura G, Higaki K. Development of Sustained Release System Based on High Water-Absorbable Gel Formation Using Croscarmellose Sodium, Alkaline Excipients and HPMC (ACSH SR System); Novel Application of Croscarmellose Sodium as a Gel Former. Pharm Res 2023; 40:3073-3086. [PMID: 37964084 DOI: 10.1007/s11095-023-03630-w] [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: 06/29/2023] [Accepted: 10/19/2023] [Indexed: 11/16/2023]
Abstract
PURPOSE Croscarmellose sodium, generally used as a superdisintegrant in pharmaceutical formulations, is hydrolyzed to form the gel structure under basic pH conditions. Utilizing this property of croscarmellose sodium, we developed a novel sustained release (SR) system. METHODS Immediate release (IR) and SR tablets containing croscarmellose sodium, alkaline excipients and/or hydroxypropyl methylcellulose (HPMC) were prepared and examined for wet strength and in vitro drug release behavior. In vivo oral drug absorption was evaluated for IR tablets, HPMC tablets and our novel SR tablets in fasted Beagle dogs. RESULTS To form the gel structure even under the physiological condition, alkaline excipients were added into the formulation containing croscarmellose sodium. Furthermore, HPMC was used to make the gel structure strong enough against mechanical destructive forces. The novel alkalized croscarmellose sodium-HPMC (ACSH) SR tablet, consisting of croscarmellose sodium, alkaline excipients, and HPMC, successfully sustained the release of acetaminophen, ibuprofen, or nicardipine hydrochloride, compared with the IR tablets. The ACSH SR system provided a better release of acetaminophen than the HPMC tablet without croscarmellose sodium in the release study using a small volume of liquid, suggesting that substantial release and subsequent absorption would be expected in the distal intestinal segments after oral dosing. The in vivo oral absorption study revealed that the ACSH SR system successfully suppressed and prolonged the plasma concentrations of acetaminophen. CONCLUSION This novel ACSH SR system prepared with croscarmellose sodium, alkaline excipients, and HPMC, would be a promising SR formulation for enabling substantial drug absorption in the distal intestinal segments.
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Affiliation(s)
- Masato Gomi
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-Naka, Kita-Ku, Okayama, 700-8530, Japan.
- Formulation R&D Laboratory, Research Division, Shionogi & Co., Ltd., 2-1-3 Kuise Terajima, Amagasaki, Hyogo, 660-0813, Japan.
| | - Naoya Mizutani
- Formulation R&D Laboratory, Research Division, Shionogi & Co., Ltd., 2-1-3 Kuise Terajima, Amagasaki, Hyogo, 660-0813, Japan
| | - Ryotaro Senoo
- Formulation R&D Laboratory, Research Division, Shionogi & Co., Ltd., 2-1-3 Kuise Terajima, Amagasaki, Hyogo, 660-0813, Japan
| | - Noriaki Matsubara
- Formulation R&D Laboratory, Research Division, Shionogi & Co., Ltd., 2-1-3 Kuise Terajima, Amagasaki, Hyogo, 660-0813, Japan
| | - Ayahisa Watanabe
- Laboratory for Medicinal Chemistry Research, Research Division, Shionogi & Co., Ltd., 3-1-1, Futaba-Cho, Toyonaka, Osaka, 561-0825, Japan
| | - Masato Maruyama
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-Naka, Kita-Ku, Okayama, 700-8530, Japan
| | - Go Kimura
- Formulation R&D Laboratory, Research Division, Shionogi & Co., Ltd., 2-1-3 Kuise Terajima, Amagasaki, Hyogo, 660-0813, Japan
| | - Kazutaka Higaki
- Department of Pharmaceutics, Faculty of Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-Naka, Kita-Ku, Okayama, 700-8530, Japan
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Thakur S, Singh B, Mishra V, Yadav N, Giri N, Sharma P, Saini A, Garg LK. Bilayer Tablet Based Chronotherapeutics in the Management of Nocturnal Asthma: An Overview. ACTA ACUST UNITED AC 2020; 13:74-82. [PMID: 30827275 DOI: 10.2174/1872211313666190227204127] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Asthma is a common ailment with a larger circadian difference. Nocturnal Asthma (NA) is an inconstant exacerbation of asthmatic condition related to the rise in warning sign during the night time and there is a need for its treatment addressing air route alertness and decline in lung functions. These symptoms are linked to sleep or known as circadian events. Chronotherapeutics is a management system based on an in-vivo drug accessibility programmed to check the rhythms of ailment in a direction to improve the therapeutic outcomes by suppressing the side effects. This review aims to provide an overview of NA, chronotherapeutics for the treatment of NA, bilayer tablets, and advanced techniques involved in the fabrication of bilayer tablets. The review also discusses some of the related patents. METHODS Relevant literature about the latest developments and updated information related to NA, chronotherapeutics and bilayer tablets has been very widely searched on different biomedical literature programs such as Google, Web of Science, PubMed portals, etc. Bilayer tablet mediated chronotherapy has gained significant attention and consideration as it is developed and fabricated based on the body's circadian rhythm. Bilayer tablets can deliver the bioactive compounds at an appropriate time, place as well as amount and site. RESULTS Available literature advocated that the bilayer matrix tablet containing a single drug in the sustained release film and fast releasing film, may be beneficial for the chronic diseases like asthma, migraine, diabetes, hypertension and inflammation which usually require immediate as well as maintained therapeutic effect. CONCLUSION The application of nanotechnology in the arena of medicine will transform the diagnosis and treatment strategies of a wide range of diseases in the upcoming years. The findings of this review confirm the importance of bilayer tablet based chronotherapy in nocturnal asthma.
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Affiliation(s)
- Sourav Thakur
- Abbott Healthcare Private Limited, Baddi (Himachal Pradesh), India
| | - Bhupendra Singh
- Abhilashi College of Pharmacy, Ner-Chowk, Mandi (Himachal Pradesh), India
| | - Vijay Mishra
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara (Punjab), India
| | - Nishika Yadav
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara (Punjab), India
| | - Namita Giri
- School of Pharmacy, Ferris State University, Big Rapids, Michigan 49307, United States
| | - Pardeep Sharma
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara (Punjab), India
| | - Ankit Saini
- Bhardwaj India Private Limited, New Delhi, India
| | - Lavi K Garg
- Abbott Healthcare Private Limited, Baddi (Himachal Pradesh), India
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Kulinowski P, Hudy W, Mendyk A, Juszczyk E, Węglarz WP, Jachowicz R, Dorożyński P. The Relationship Between the Evolution of an Internal Structure and Drug Dissolution from Controlled-Release Matrix Tablets. AAPS PharmSciTech 2016; 17:735-42. [PMID: 26335419 DOI: 10.1208/s12249-015-0402-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 08/19/2015] [Indexed: 11/30/2022] Open
Abstract
In the last decade, imaging has been introduced as a supplementary method to the dissolution tests, but a direct relationship of dissolution and imaging data has been almost completely overlooked. The purpose of this study was to assess the feasibility of relating magnetic resonance imaging (MRI) and dissolution data to elucidate dissolution profile features (i.e., kinetics, kinetics changes, and variability). Commercial, hydroxypropylmethyl cellulose-based quetiapine fumarate controlled-release matrix tablets were studied using the following two methods: (i) MRI inside the USP4 apparatus with subsequent machine learning-based image segmentation and (ii) dissolution testing with piecewise dissolution modeling. Obtained data were analyzed together using statistical data processing methods, including multiple linear regression. As a result, in this case, zeroth order release was found to be a consequence of internal structure evolution (interplay between region's areas-e.g., linear relationship between interface and core), which eventually resulted in core disappearance. Dry core disappearance had an impact on (i) changes in dissolution kinetics (from zeroth order to nonlinear) and (ii) an increase in variability of drug dissolution results. It can be concluded that it is feasible to parameterize changes in micro/meso morphology of hydrated, controlled release, swellable matrices using MRI to establish a causal relationship between the changes in morphology and drug dissolution. Presented results open new perspectives in practical application of combined MRI/dissolution to controlled-release drug products.
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Maroni A, Zema L, Cerea M, Foppoli A, Palugan L, Gazzaniga A. Erodible drug delivery systems for time-controlled release into the gastrointestinal tract. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2015.10.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kaljević O, Djuriš J, Djurić Z, Ibrić S. Application of failure mode and effects analysis in quality by design approach for formulation of carvedilol compression coated tablets. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2016.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Choi DH, Lim DG, Son HM, Jeong SH. Comprehensive evaluation of layer separation tendency of novel three-layered tablets with geometric and mechanical properties. Int J Pharm 2014; 465:347-59. [DOI: 10.1016/j.ijpharm.2014.02.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2013] [Revised: 12/18/2013] [Accepted: 02/08/2014] [Indexed: 11/25/2022]
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Choi DH, Kim KH, Park JS, Jeong SH, Park K. Evaluation of drug delivery profiles in geometric three-layered tablets with various mechanical properties, in vitro–in vivo drug release, and Raman imaging. J Control Release 2013; 172:763-72. [DOI: 10.1016/j.jconrel.2013.08.301] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 08/05/2013] [Accepted: 08/26/2013] [Indexed: 10/26/2022]
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Takizawa Y, Kishimoto H, Nakagawa M, Sakamoto N, Tobe Y, Furuya T, Tomita M, Hayashi M. Effects of pharmaceutical excipients on membrane permeability in rat small intestine. Int J Pharm 2013; 453:363-70. [DOI: 10.1016/j.ijpharm.2013.05.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 05/14/2013] [Accepted: 05/24/2013] [Indexed: 10/26/2022]
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Yin X, Li H, Liu R, Chen J, Ji J, Chen J, Shao Q, Xiao T, York P, He Y, Zhang J. Fractal structure determines controlled release kinetics of monolithic osmotic pump tablets. J Pharm Pharmacol 2013; 65:953-9. [PMID: 23738722 DOI: 10.1111/jphp.12056] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 02/08/2013] [Indexed: 12/01/2022]
Abstract
Abstract
Objectives
To calculate the fractal dimension values of felodipine osmotic pump tablets during drug dissolution and to characterize the mechanism of the controlled drug release kinetics through three-dimensional fractal data.
Methods
Three-dimensional fractal values of volume (Df,volume) and surface (Df,surface) of the tablet core were calculated based on the box counting method.
Key findings
During the process of release of felodipine, both Df,volume and Df,surface were within the range of 2–3 and then changed markedly after a period of 3.0 h release, corresponding to extensive changes in entire shape, interior porous channels and surface structure of the tablet core. The curve of Df,volume mirrored that for tablet volume, however the curve of Df,surface was quite different from that of the surface area. Results showed that values of Df,surface correlated well with the drug release rate. Df,surface was found to be an efficient fractal parameter that could be used to characterize the complex changes to the tablet core that take place during drug release.
Conclusions
The fractal dimension can be used as a quantitative indicator reflecting the drug release performance and be regarded as a key indicator for the quality control of oral controlled drug delivery systems.
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Affiliation(s)
- Xianzhen Yin
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Shanghai, China
- Institute of Pharmaceutical Innovation, University of Bradford, Bradford, West Yorkshire, UK
| | - Haiyan Li
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Shanghai, China
| | - Ruihao Liu
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Shanghai, China
| | - Jing Chen
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Shanghai, China
| | - Junqiu Ji
- Hefei Lifeon Medication Group, Hefei, China
| | - Jun Chen
- Hefei Lifeon Medication Group, Hefei, China
| | - Qun Shao
- Institute of Pharmaceutical Innovation, University of Bradford, Bradford, West Yorkshire, UK
| | - Tiqiao Xiao
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Peter York
- Institute of Pharmaceutical Innovation, University of Bradford, Bradford, West Yorkshire, UK
| | - You He
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, China
| | - Jiwen Zhang
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, Shanghai, China
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Formulation and evaluation of delayed-onset extended-release tablets of metoprolol tartrate using hydrophilic-swellable polymers. ACTA PHARMACEUTICA 2012; 62:105-14. [PMID: 22472453 DOI: 10.2478/v10007-012-0003-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
In view of the circadian rhythm of cardiovascular diseases, a delayed-onset extended-release (DOER) formulation of metoprolol tartrate (MT) was prepared. This was achieved through dissolution-guided optimization of the proportion of Methocel K4M and Methocel K15M. Core erosion ratio was greater than 50 %, thereby showing steady release of the drug after the lag time until complete dissolution. Optimized formulation produced a lag phase of 6 h followed by complete release of 98.7 ± 2.1 % in 24 h. Water uptake study revealed that Methocel K15M has lower water uptake (30 ± 1 %) than Methocel K4M (40 ± 2 %) after 24 h. Axial swelling of polymers was higher than swelling in the radial direction. Drug-polymer interaction study precludes any interaction between drug and polymer. Such a drug delivery system may provide a viable alternative for effective management of hypertension and other related disorders. This work also proposes an approach to attain DOER for a hydrophilic drug by using a hydrophilic swellable polymer in press coat.
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Lin SY, Kawashima Y. Current status and approaches to developing press-coated chronodelivery drug systems. J Control Release 2012; 157:331-53. [DOI: 10.1016/j.jconrel.2011.09.065] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 08/07/2011] [Indexed: 10/17/2022]
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Sunil SA, Rao NS, Srikanth MV, Uhumwangho MU, Kumar KSP, Murthy KVR. Development and evaluation of a chronotherapeutic drug delivery system of torsemide. BRAZ J PHARM SCI 2011. [DOI: 10.1590/s1984-82502011000300017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to prepare and evaluate chronotherapeutic drug delivery systems (ChrDDs) of torsemide. Compression coated tablets (CCT) containing torsemide in the core tablet were prepared by the compression coating technique with different grades of polyethylene oxide (PEO WSR 301 & 1105). The optimized formulations were characterised for tabletting parameters and drug polymer interaction by Fourier-Transform Infrared Spectroscopy (FTIR).The hardness of all the CCT using PEO WSR 301 & PEO WSR 1105 were in the range 6-8 kg/cm² & 5.5 to 7 kg/cm² respectively. Their friability values were <0.3%. All the CCT showed a clear lag time but finalized as per the predetermined lag time. As the amount of PEO was increased in the outer layer the drug released was delayed. The drug content of all the CCT was >99%. The FTIR studies showed no interaction throughout the process of development. Formulations of F7 and of P7 were considered optimized formulations since they yielded a predetermined lag time of 6h before burst release. Hence, these formulations can be exploited to achieve chronotherapeutic drug delivery systems of Torsemide for the treatment of hypertension at the time the patient needs it.
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Aher KB, Bhavar GB, Joshi HP, Chaudhari SR. WITHDRAWN: Recent advances in compression-coated tablets as a controlled drug delivery system. Saudi Pharm J 2011. [DOI: 10.1016/j.jsps.2011.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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14
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Kulinowski P, Dorożyński P, Młynarczyk A, Węglarz WP. Magnetic resonance imaging and image analysis for assessment of HPMC matrix tablets structural evolution in USP Apparatus 4. Pharm Res 2011; 28:1065-73. [PMID: 21181545 PMCID: PMC3073048 DOI: 10.1007/s11095-010-0357-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2010] [Accepted: 12/15/2010] [Indexed: 10/26/2022]
Abstract
PURPOSE The purpose of the study was to present a methodology for the processing of Magnetic Resonance Imaging (MRI) data for the quantification of the dosage form matrix evolution during drug dissolution. The results of the study were verified by comparison with other approaches presented in literature. METHODS A commercially available, HPMC-based quetiapine fumarate tablet was studied with a 4.7T MR system. Imaging was performed inside an MRI probe-head coupled with a flow-through cell for 12 h in circulating water. The images were segmented into three regions using threshold-based segmentation algorithms due to trimodal structure of the image intensity histograms. RESULTS Temporal evolution of dry glassy, swollen glassy and gel regions was monitored. The characteristic features were observed: initial high expansion rate of the swollen glassy and gel layers due to initial water uptake, dry glassy core disappearance and maximum area of swollen glassy region at 4 h, and subsequent gel layer thickness increase at the expense of swollen glassy layer. CONCLUSIONS The temporal evolution of an HPMC-based tablet by means of noninvasive MRI integrated with USP Apparatus 4 was found to be consistent with both the theoretical model based on polymer disentanglement concentration and experimental VIS/FTIR studies.
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Affiliation(s)
- Piotr Kulinowski
- Department of Magnetic Resonance Imaging, Institute of Nuclear Physics, Polish Academy of Sciences, ul. Radzikowskiego 152, 31-342 Kraków, Poland.
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Uğurlu T, Türkoğlu M, Özaydın T. In vitro evaluation of compression-coated glycyl-L-histidyl-L-lysine-Cu(II) (GHK-Cu2+)-loaded microparticles for colonic drug delivery. Drug Dev Ind Pharm 2011; 37:1282-9. [PMID: 21457130 DOI: 10.3109/03639045.2011.569934] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Glycyl-L-histidyl-L-lysine-Cu(II) (GHK-Cu(2+))-loaded Zn-pectinate microparticles in the form of hydroxypropyl cellulose (HPC) compression-coated tablets were prepared and their in vitro behavior tested. GHK-Cu(2+) delivery to colon can be useful for the inhibition of matrix metalloproteinase, with the increasing secretion of tissue inhibitors of metalloproteinases (TIMPS),which are the major factors contributing in mucosal ulceration and inflammation in inflammatory bowel disease. The concentration of peptide was determined spectrophotometrically. The results obtained implied that surfactant ratio had a significant effect on percent production yield (1.25 to 1.75 w/w; 72.22% to 80.84%), but cross-linking agent concentration had not. The entrapment efficiency (EE) was found to be in the range of 58.25-78.37%. The drug-loading factor significantly increased the EE; however, enhancement of cross-linking agent concentration decreased it. The release of GHK-Cu(2+) from Zn-pectinate microparticles (F1-F8) in simulated intestinal fluid was strongly affected by cross-linking agent concentration and drug amount (50 mg for F1-F6; 250 mg for F7-F8), but not particularly affected by surfactant amount. Release profiles represented that the microparticles released 50-80% their drug load within 4 h. Therefore, the optimum microparticle formulation (F8) coated with a relatively hydrophobic polymer HPC to get a suitable colonic delivery system. The optimum colonic delivery tablets prepared with 700 mg HPC-SL provided the expected delayed release with a lag time of 6 h. The effects of polymer viscosity and coat weight on GHK-Cu(2+) release were found to be crucial for the optimum delay of lag time. The invention was found to be promising for colonic delivery.
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Affiliation(s)
- Timuçin Uğurlu
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Marmara University, Istanbul, Turkey.
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Park JS, Shim JY, Park JS, Lee MJ, Kang JM, Lee SH, Kwon MC, Choi YW, Jeong SH. Formulation Variation and in Vitro-in Vivo Correlation for a Rapidly Swellable Three-Layered Tablet of Tamsulosin HCl. Chem Pharm Bull (Tokyo) 2011; 59:529-35. [DOI: 10.1248/cpb.59.529] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Jun Sang Park
- GL PharmTech Corp
- College of Pharmacy, Chung-Ang University
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17
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Oral pulsatile delivery: Rationale and chronopharmaceutical formulations. Int J Pharm 2010; 398:1-8. [DOI: 10.1016/j.ijpharm.2010.07.026] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 07/15/2010] [Accepted: 07/17/2010] [Indexed: 12/30/2022]
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Dorożyński PP, Kulinowski P, Mendyk A, Młynarczyk A, Jachowicz R. Novel application of MRI technique combined with flow-through cell dissolution apparatus as supportive discriminatory test for evaluation of controlled release formulations. AAPS PharmSciTech 2010; 11:588-97. [PMID: 20352532 DOI: 10.1208/s12249-010-9418-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2009] [Accepted: 03/09/2010] [Indexed: 11/30/2022] Open
Abstract
Dissolution studies cannot distinguish phenomena occurring inside the dosage forms when studying formulation with similar dissolution profiles-such formulations can behave differently when considering their physical changes. The application of flow-through dissolution apparatus integrated with magnetic resonance imaging (MRI) system for discriminative evaluation of controlled release dosage forms with similar dissolution profiles was presented. Hydrodynamically balanced systems (HBS) containing L: -dopa and various grades hydroxypropyl methylcelluloses were prepared. The dissolution studies of L: -dopa were performed at high field (4.7 T) MR system with MR-compatible flow-through cell. MRI was done with 0.14 x 0.14 x 1-mm spatial resolution and temporal resolution of 10 min to record changes of HBS parameters during dissolution in 0.1 M HCl. Structural and geometrical changes were evaluated using the following parameters: total area of HBS cross-section, its Feret's diameter, perimeter and circularity, area of hydrogel layer, and "dry core" area. While the dissolution profiles of L: -dopa were similar, the image analysis revealed differences in the structural and geometrical changes of the HBS. The mechanism of drug release from polymeric matrices is a result of synergy of several different phenomena occurring during dissolution and may differ between formulations, yet giving similar dissolution profiles. A multivariate analysis was performed to create a model taking into account dissolution data, data from MRI, information about chemical structure, and polymer viscosity. It provided a single model for all the formulations which was confirmed to be competent. The presented method has merit as a potential Process Analytical Technology tool.
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Gohel M, Parikh R, Nagori S, Dabhi M. Design of a Potential Colonic Drug Delivery System of Mesalamine. Pharm Dev Technol 2008; 13:447-56. [DOI: 10.1080/10837450802088679] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Wu B, Shun N, Wei X, Wu W. Characterization of 5-Fluorouracil Release from Hydroxypropylmethylcellulose Compression-Coated Tablets. Pharm Dev Technol 2008; 12:203-10. [PMID: 17510892 DOI: 10.1080/10837450601168722] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Hydrogel compression-coated tablets are able to release the core drug after a period of lag time and have potential for colon-specific drug delivery based on gastrointestinal transit time concept. This study investigated the factors influencing in vitro release characteristics of a model drug 5-fluorouracil from hydroxypropylmethycellulose (HPMC) compression-coated tablets. The core tablet, prepared by a wet granulation compression method, was designed to disintegrate and dissolute quickly. To prepare the compression-coated tablets, 50% of the HPMC/lactose coat powder was precompressed first, followed by centering the core tablet and compressing with the other 50% of the coat powder. Release characteristics were evaluated in distilled water by using a Chinese Pharmacopoeia rotatable basket method. Effect of HPMC viscosity, lactose content in outer shell, and overall coating weight of outer shell on release lag time (T(lag)), and zero-order release rate (k) were studied. Release of drug from compression-coated tablets began after a time delay as a result of hydrogel swelling/retarding effect, followed by zero-order release for most of the formulations studied. HPMC of higher viscosity (K4M and K15M) provided better protection of the drug-containing core, showing increased release lag time and slower release rate. Incorporating lactose in outer shell led to decrease of T(lag) and increase of k. T(lag) and k are exponentially and linearly correlated to lactose content, expressed as weight percentage of the outer shell. Larger coating weight (W) of outer shell produced larger coating thickness (D) around core tablet, which resulted in increase in T(lag) and decrease in k. There was good fitting of a linear model for each of the four variables W, D, T(lag), and k. Hardness of the compression-coated tablets and pHs of the release media had little effect on drug release profile. It is concluded that the release lag time and release rate are able to be tailored through adjusting the formulation variables to achieve colon-specific drug delivery of 5-fluorouracil.
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Affiliation(s)
- Baojian Wu
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, China
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Tanno FK, Sakuma S, Masaoka Y, Kataoka M, Kozaki T, Kamaguchi R, Ikeda Y, Kokubo H, Yamashita S. Site‐Specific Drug Delivery to the Middle Region of the Small Intestine by Application of Enteric Coating with Hypromellose Acetate Succinate (HPMCAS). J Pharm Sci 2008; 97:2665-79. [PMID: 17828736 DOI: 10.1002/jps.21172] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Enteric coatings that deliver drugs to specific regions of the small intestine were examined. Hypromellose acetate succinate (HPMCAS) with different values of succinoyl group contents was used. Decreasing the succinoyl group content resulted in an increase in the pH at which HPMCAS started to dissolve. Drug-containing granules with or without enteric coating were prepared and their in vitro dissolution in a simulated intestinal fluid of pH 6.8 was examined. Granules coated with HPMCAS having the succinoyl group content of 6.2% showed a lag time of about 30 min, although drug release from granules without coating was completed within 20 min. The time lag and dissolution rate were extended and reduced, respectively, as the succinoyl group content was decreased. Rat experiments indicated that enteric-coated granules disintegrated and the bulk of the drugs was immediately released when the granules reached a specific site of the small intestine where the pH corresponded to the pH at which the enteric coating agent started to dissolve. Similar results were observed in monkey experiments. It was suggested that HPMCAS with the succinoyl group content of about 5% was suitable as an enteric coating agent for delivering drugs to the middle-to-lower region of the small intestine.
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Affiliation(s)
- Fumié K Tanno
- Specialty Chemicals Research Center, Shin-Etsu Chemical Co, Ltd, 28-1, Nishifukushima, Joetsu, Niigata, Japan
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22
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Gazzaniga A, Palugan L, Foppoli A, Sangalli ME. Oral pulsatile delivery systems based on swellable hydrophilic polymers. Eur J Pharm Biopharm 2008; 68:11-8. [PMID: 17888641 DOI: 10.1016/j.ejpb.2007.05.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2006] [Revised: 05/24/2007] [Accepted: 05/24/2007] [Indexed: 01/07/2023]
Abstract
Upon contact with aqueous fluids, swellable hydrophilic polymers undergo typical chain relaxation phenomena that coincide with a glassy-rubbery transition. In the rubbery phase, these polymers may be subject to swelling, dissolution and erosion processes or, alternatively, form an enduring gel barrier when cross-linked networks (hydrogels) are dealt with. Because of the peculiar hydration and biocompatibility properties, such materials are widely exploited in the pharmaceutical field, particularly as far as hydrophilic cellulose derivatives are concerned. In oral delivery, they have for long been employed in the manufacturing of prolonged release matrices and, more recently, for pulsatile (delayed) release devices as well. Pulsatile delivery, which is meant as the liberation of drugs following programmed lag phases, has drawn increasing interest especially in view of emerging chronotherapeutic approaches. In pursuit of pulsatile release, various design strategies have been proposed, chiefly including reservoir, capsular and osmotic formulations. In most cases, water-swellable polymers play a key role in the overall delivery mechanism after being activated by physiological media. Based on these premises, the aim of the present review is to survey the main oral pulsatile delivery systems, for which swelling, dissolution and/or erosion of hydrophilic polymers are primarily involved in the control of release.
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Affiliation(s)
- Andrea Gazzaniga
- Instituto di Chimica Farmaceutica e Tossicologica P. Pratesi, University of Milan, Viale Abruzzi 42, Milan, Italy.
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23
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Gazzaniga A, Maroni A, Sangalli ME, Zema L. Time-controlled oral delivery systems for colon targeting. Expert Opin Drug Deliv 2006; 3:583-97. [PMID: 16948555 DOI: 10.1517/17425247.3.5.583] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In recent years, many research efforts have been spent in the achievement of selective delivery of drugs into the colon following oral administration. Indeed, colonic release is regarded as a beneficial approach to the pharmacological treatment or prevention of widespread large bowel pathologies, such as inflammatory bowel disease and adenocarcinoma. In addition, it is extensively explored as a potential means of enhancing the oral bioavailability of peptides, proteins and other biotechnological molecules, which are known to be less prone to enzymatic degradation in the large, rather than in the small, intestine. Based on these premises, several formulation strategies have been attempted in pursuit of colonic release, chiefly including microflora-, pH-, pressure- and time-dependent delivery technologies. In particular, this review is focused on the main design features and release performances of time-controlled devices, which rely on the relative constancy that is observed in the small intestinal transit time of dosage forms.
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Affiliation(s)
- Andrea Gazzaniga
- Istituto di Chimica Farmaceutica e Tossicologica P. Pratesi, Università di Milano, V.le Abruzzi 42, 20131 Milan, Italy.
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Momin M, Pundarikakshudu K. Optimization and pharmacotechnical evaluation of compression-coated colon-specific drug delivery system of triphala using factorial design. Drug Dev Res 2005. [DOI: 10.1002/ddr.20005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sawada T, Kondo H, Nakashima H, Sako K, Hayashi M. Time-release compression-coated core tablet containing nifedipine for chronopharmacotherapy. Int J Pharm 2004; 280:103-11. [PMID: 15265551 DOI: 10.1016/j.ijpharm.2004.05.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2003] [Revised: 05/07/2004] [Accepted: 05/09/2004] [Indexed: 11/26/2022]
Abstract
Compression-coated time-release tablets (CC tablets) containing nifedipine, dihydropyridine Ca channel blocker, in the core tablet were prepared by dry coating with different polyethylene oxide-polyethylene glycol mixtures. Each formulation showed a clear lag period before nifedipine release initiation, followed by sustained drug release lasting up to 24 h. The lag time of nifedipine release increased as the amount of polyethylene oxide in the outer layer increased. To investigate the applicability of such CC-tablets for chronopharmacotherapy, the pharmacokinetics of CC-1 and CC-2 tablets, with different in vitro lag times before drug release, were compared with the pharmacokinetics of a sustained-release (SR) tablet in dogs. The times of first nifedipine appearance (TFA) in plasma were 0.7 +/- 0.3 h for SR, 2.5 +/- 1.2 h for CC-1, and 5.3 +/- 1.0 h for CC-2. These data show a significant difference in in vivo lag time (P < 0.01) among the three formulations that correlates with the in vitro lag times. Thus, the in vivo lag time could be predicted from the in vitro lag time. Additionally, higher plasma nifedipine concentrations were observed at 8 h after administration of the CC-2 than that observed for the SR-tablet. These results indicate that a CC-tablet with a lag time before drug release is a potentially useful formulation for chronopharmacotherapy that can control the time and duration of plasma drug concentration better than existing SR technologies.
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Affiliation(s)
- Toyohiro Sawada
- DDS Research, Novel Pharmaceutical Research Laboratories, Institute for Technology Development, Yamanouchi Pharmaceutical Co., Ltd., 180 Ozumi, Yaizu-shi, Shizuoka 425-0072, Japan.
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