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Triboandas H, Pitt K, Bezerra M, Ach-Hubert D, Schlindwein W. Itraconazole Amorphous Solid Dispersion Tablets: Formulation and Compaction Process Optimization Using Quality by Design Principles and Tools. Pharmaceutics 2022; 14:pharmaceutics14112398. [PMID: 36365216 PMCID: PMC9693276 DOI: 10.3390/pharmaceutics14112398] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 11/01/2022] [Accepted: 11/03/2022] [Indexed: 11/09/2022] Open
Abstract
BCS Class II drugs, such as itraconazole (ITZ), exhibit poor solubility (1–4 ng/mL) and so require solubility enhancement. Therefore, ITZ and Kollidon® VA64 (KOL) amorphous solid dispersions (ASDs) were produced using hot-melt extrusion (HME) to improve ITZ’s poor solubility. A novel strategy for tablet formulations using five inorganic salts was investigated (KCl, NaCl, KBr, KHCO3 and KH2PO4). These kosmotopric salts are thought to compete for water hydration near the polymer chain, hence, preventing polymer gelation and, therefore, facilitating disintegration and dissolution. Out of all the formulations, the KCl containing one demonstrated acceptable tensile strength (above 1.7 MPa), whilst providing a quick disintegration time (less than 15 min) and so was selected for further formulation development through a design of the experiment approach. Seven ITZ-KOL-ASD formulations with KCl were compacted using round and oblong punches. Round tablets were found to disintegrate under 20 min, whereas oblong tablets disintegrated within 10 min. The round tablets achieved over 80% ITZ release within 15 min, with six out of seven formulations achieving 100% ITZ release by 30 min. It was found that tablets comprising high levels of Avicel® pH 102 (30%) and low levels of KCl (5%) tend to fail the disintegration target due to the strong bonding capacity of Avicel® pH 102. The disintegration time and tensile strength responses were modeled to obtain design spaces (DSs) relevant to both round and oblong tablets. Within the DS, several formulations can be chosen, which meet the Quality Target Product Profile (QTPP) requirements for immediate-release round and oblong tablets and allow for flexibility to compact in different tablet shape to accommodate patients’ needs. It was concluded that the use of inorganic salts, such as KCl, is the key to producing tablets of ITZ ASDs with fast disintegration and enhanced dissolution. Overall, ITZ-KOL-ASD tablet formulations, which meet the QTPP, were achieved in this study with the aid of Quality by Design (QbD) principles for formulation and compaction process development and optimization.
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Affiliation(s)
- Hetvi Triboandas
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK
| | - Kendal Pitt
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK
| | - Mariana Bezerra
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK
| | - Delphine Ach-Hubert
- Medelpharm, 615 rue du Chat Botté, ZAC des Malettes, F-01700 Beynost, France
| | - Walkiria Schlindwein
- Leicester School of Pharmacy, De Montfort University, Leicester LE1 9BH, UK
- Correspondence:
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Suhail M, Fang CW, Chiu IH, Hung MC, Vu QL, Lin IL, Wu PC. Designing and In Vitro Characterization of pH-Sensitive Aspartic Acid-Graft-Poly(Acrylic Acid) Hydrogels as Controlled Drug Carriers. Gels 2022; 8:gels8080521. [PMID: 36005122 PMCID: PMC9407557 DOI: 10.3390/gels8080521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 01/06/2023] Open
Abstract
Acetaminophen is an odorless and white crystalline powder drug, used in the management of fever, pain, and headache. The half-life of acetaminophen is very short; thus, multiple intakes of acetaminophen are needed in a day to maintain a constant pharmacological action for an extended period of time. Certain severe adverse effects are produced due to the frequent intake of acetaminophen, especially hepatotoxicity and skin rashes. Therefore, a drug carrier system is needed which not only prolongs the release of acetaminophen, but also enhances the patient compliance. Therefore, the authors prepared novel aspartic acid-graft-poly(acrylic acid) hydrogels for the controlled release of acetaminophen. The novelty of the prepared hydrogels is based on the incorporation of pH-sensitive monomer acrylic acid with polymer aspartic acid in the presence of ethylene glycol dimethacrylate. Due to the pH-sensitive nature, the release of acetaminophen was prolonged for an extended period of time by the developed hydrogels. Hence, a series of studies was carried out for the formulated hydrogels including sol-gel fraction, FTIR, dynamic swelling, polymer volume analysis, thermal analysis, percent porosity, SEM, in vitro drug release studies, and PXRD analysis. FTIR analysis confirmed the grafting of acrylic acid onto the backbone of aspartic acid and revealed the development of hydrogels. The thermal studies revealed the high thermal stability of the fabricated hydrogels as compared to pure aspartic acid. An irregular surface with a few pores was indicated by SEM. PXRD revealed the amorphous state of the developed hydrogels and confirmed the reduction in the crystallinity of the unreacted aspartic acid by the formulated hydrogels. An increase in gel fraction was observed with the increasing concentration of aspartic acid, acrylic acid, and ethylene glycol dimethacrylate due to the availability of a high amount of free radicals. The porosity study was influenced by the various compositions of developed hydrogels. Porosity was increased due to the enhancement in the concentrations of aspartic acid and acrylic acid, whereas it decreased with the increase in ethylene glycol dimethacrylate concentration. Similarly, the pH-responsive properties of hydrogels were evaluated by dynamic swelling and in vitro drug release studies at two different pH levels (1.2 and 7.4), and a greater dynamic swelling and acetaminophen release were exhibited at pH 7.4 as compared to pH 1.2. An increase in swelling, drug loading, and drug release was seen with the increased incorporation of aspartic acid and acrylic acid, whereas a decrease was detected with the increase in the concentration of ethylene glycol dimethacrylate. Conclusively, the formulated aspartic acid-based hydrogels could be employed as a suitable nonactive pharmaceutical ingredient for the controlled delivery of acetaminophen.
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Affiliation(s)
- Muhammad Suhail
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Chih-Wun Fang
- Divison of Pharmacy, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan
| | - I-Hui Chiu
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Ming-Chia Hung
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Quoc Lam Vu
- Department of Clinical Pharmacy, Thai Nguyen University of Medicine and Pharmacy, 284 Luong Ngoc Quyen Str., Thai Nguyen 24000, Vietnam
| | - I-Ling Lin
- Department of Medicine Laboratory Science and Biotechnology, College of Health Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Pao-Chu Wu
- School of Pharmacy, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: ; Tel.: +886-7-3121-101
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Optimization of the Preformulation and Formulation Parameters in the Development of New Extended-Release Tablets Containing Felodipine. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12115333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Herein, new extended-release tablets containing felodipine were developed. For the orally administered formulations, optimization of the preformulation and formulation parameters was performed to assess the performance of the dosage form. Initially, the morphological and physical characterization of two forms of felodipine (microcrystalline and macrocrystalline) using Fourier transform infrared spectroscopy, differential scanning calorimetry and optical microscopy was performed. The pharmaco-technical properties of the two felodipine forms were also determined. Subsequently, formulation studies for felodipine extended-release tablets were performed. Mathematical modelling of release kinetics of felodipine from developed formulations using a power law model was also performed. Based on the influence of formulation factors on the in vitro availability of felodipine in experimental tablets, a new extended-release tablet formulation was established.
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Pepin X, Goetschy M, Abrahmsén-Alami S. Mechanistic Models for USP2 Dissolution Apparatus, Including Fluid Hydrodynamics and Sedimentation. J Pharm Sci 2021; 111:185-196. [PMID: 34666045 DOI: 10.1016/j.xphs.2021.10.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/11/2021] [Accepted: 10/11/2021] [Indexed: 12/30/2022]
Abstract
Drug product dissolution is a key input to Physiologically Based Biopharmaceutics Models (PBBM) to be able to predict in vivo dissolution. The integration of product dissolution in PBBMs for immediate release drug products should be mechanistic, i.e. allow to capture the main determinants of the in vitro dissolution experiment, and extract product batch specific parameter(s). This work focussed on the Product Particle Size Distribution (P-PSD), which was previously shown to integrate the effect of dose, volume, solubility (pH), size and concentration of micelles in the calculation of a batch specific input to PBBMs, and proposed new hydrodynamic (HD) models, which integrate the effect of USP2 apparatus paddle rotation speed and medium viscosity on dissolution. In addition, new models are also proposed to estimate the quantitative impact of formulation and drug sedimentation or "coning" on dissolution. Model "HDC-1" predicts coning in the presence of formulation insoluble excipients and "HDC-2" predicts the sedimentation of the drug substance only. These models were parameterized and validated on 166 dissolution experiments and 18 different drugs. The validation showed that the HD model average fold errors (AFE) for dissolution rate prediction of immediate release formulations, is comprised between 0.85 and 1.15, and the absolute average fold errors (AAFE) are comprised between 1.08 and 1.28, which shows satisfactory predictive power. For experiments where coning was suspected, the HDC-1 model improved the precision of the prediction (defined as ratio of "AAFE-1"values) by 2.46 fold compared to HD model. The calculation of a P-PSD integrating the impact of USP2 paddle rotation, medium viscosity and coning, will improve the PBBM predictions, since these parameters could have an influence on in vitro dissolution, and could open the way to better prediction of the effect of prandial state on human exposure, by developing new in silico tools which could integrate variation of velocity profiles due to the chyme viscosity.
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Affiliation(s)
- Xavier Pepin
- New Modalities and Parenteral Development, Pharmaceutical Technology & Development, Operations, AstraZeneca, Macclesfield, UK.
| | - Matéo Goetschy
- During manuscript preparation: European School of Chemistry, Polymers and Materials. University of Strasbourg (ECPM-Strasbourg), Strasbourg, France
| | - Susanna Abrahmsén-Alami
- Innovation Sciences & External Liaisons, Pharmaceutical Technology & Development, Operations, AstraZeneca, Gothenburg, Sweden
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Park C, Lee JH, Jin G, Ngo HV, Park JB, Tran TTD, Tran PHL, Lee BJ. Release kinetics of hydroxypropyl methylcellulose governing drug release and hydrodynamic changes of matrix tablet. Curr Drug Deliv 2021; 19:520-533. [PMID: 34420504 DOI: 10.2174/1567201818666210820101549] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Hydrophilic hydroxypropyl methylcellulose (HPMC) matrix tablets are the standard role model of the oral controlled-release formulation. Nevertheless, the HPMC kinetics for the mechanistic understanding of drug release and hydrodynamic behaviors are rarely investigated. This study aims to investigate the release behaviors of both HPMC and paracetamol (model drug) from the hydrophilic matrix tablet. METHODS Two different viscosity grades of HPMC were used (Low viscosity: 6 cps, High viscosity: 4,000 cps). Three different ratios of drug/HPMC (H:38.08%, M:22.85%, and L:15.23% (w/w) of HPMC amounts in total weight) matrix tablets were prepared by wet granulation technique. The release profiles of the drug and HPMC in a matrix tablet were quantitatively analyzed by HPLC and 1H-nuclear magnetic resonance (NMR) spectroscopy. The hydrodynamic changes of HPMC were determined by the gravimetric behaviors such as swelling and erosion rates, gel layer thickness, front movement data,and distributive near-infrared (NIR) chemical imaging of HPMC in a matrix tablet during the dissolution process. RESULTS High viscosity HPMC tablets showed slower release of HPMC than the release rate of drug, suggesting that drug release preceded polymer release.Different hydration phenomenon was qualitatively identified and corresponded to the release profiles. The release behaviors of HPMC and drug in the tablet could be distinguished with the significant difference with fitted dissolution kinetics model (Low viscosity HPMC 6cps; Korsmeyer-Peppas model, High viscosity HPMC 4000cps; Hopfenberg model, Paracetamol; Weibull model) according to the weight of ingredients and types of HPMC. CONCLUSION The determination of HPMC polymer release correlating with drug release, hydrodynamic behavior, and NIR chemical imaging of HPMC can provide new insights into the drug release-modulating mechanism in the hydrophilic matrix system.
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Affiliation(s)
- Chulhun Park
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton T6G 2E1, Alberta. Canada
| | - Jong Hoon Lee
- College of Pharmacy, Ajou University, Suwon 16499. South Korea
| | - Gang Jin
- College of Pharmacy, Ajou University, Suwon 16499. South Korea
| | - Hai Van Ngo
- College of Pharmacy, Ajou University, Suwon 16499. South Korea
| | - Jun-Bom Park
- College of Pharmacy, Sahmyook University, Seoul 01795. South Korea
| | - Thao T D Tran
- Faculty of Pharmacy, Duy Tan University, Danang 550000. Vietnam
| | - Phuong H L Tran
- Deakin University, Geelong Australia, School of Medicine. Australia
| | - Beom-Jin Lee
- College of Pharmacy, Ajou University, Suwon 16499. South Korea
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Portier C, Vervaet C, Vanhoorne V. Continuous Twin Screw Granulation: A Review of Recent Progress and Opportunities in Formulation and Equipment Design. Pharmaceutics 2021; 13:668. [PMID: 34066921 PMCID: PMC8148523 DOI: 10.3390/pharmaceutics13050668] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 04/30/2021] [Accepted: 05/02/2021] [Indexed: 11/16/2022] Open
Abstract
Continuous twin screw wet granulation is one of the key continuous manufacturing technologies that have gained significant interest in the pharmaceutical industry as well as in academia over the last ten years. Given its considerable advantages compared to wet granulation techniques operated in batch mode such as high shear granulation and fluid bed granulation, several equipment manufacturers have designed their own manufacturing setup. This has led to a steep increase in the research output in this field. However, most studies still focused on a single (often placebo) formulation, hence making it difficult to assess the general validity of the obtained results. Therefore, current review provides an overview of recent progress in the field of continuous twin screw wet granulation, with special focus on the importance of the formulation aspect and raw material properties. It gives practical guidance for novel and more experienced users of this technique and highlights some of the unmet needs that require further research.
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Affiliation(s)
| | | | - Valérie Vanhoorne
- Laboratory of Pharmaceutical Technology, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, B-9000 Ghent, Belgium; (C.P.); (C.V.)
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7
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Soni A, Paprikar A, Lin S. Effect of alkalizing agent on abuse deterrent potential of multiple-unit ingestion of bilayer abuse-deterrent extended-release tablets using propranolol as model drug for opioids overdose crisis. Int J Pharm 2021; 600:120480. [PMID: 33722755 DOI: 10.1016/j.ijpharm.2021.120480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 12/25/2022]
Abstract
The objective of present study is to develop bilayer abuse-deterrent extended-release tablets (ADERTs) using propranolol HCl as model drug for opioids overdose crisis. Bilayer ADERTs were fabricated by direct compression and formulated with polymer matrix in extended-release drug layer coupled with alkalizing and aversive agents in fast-disintegrating pH modifying layer. Various alkalizing agents, like magnesium hydroxide, aluminum hydroxide, calcium carbonate, and calcium hydroxide, were evaluated for their abuse-deterrent potential via in-vitro drug release and extraction studies. Based on the outcomes, magnesium hydroxide was selected as an alkalizing agent, since it raised the pH of dissolving media near to pKa of the drug studied in this investigation. The formulated bilayer ADERTs with magnesium hydroxide provided similar drug release profiles as compared to conventional extended-release tablets for single-unit ingestion. However, upon ingestion of multiple-unit bilayer ADERTs, the fast-disintegrating pH modifying layer increases pH of dissolving media, while extended-release layer increases micro-environmental pH within tablets. Retarding drug release owing to low solubility of basic drug at higher pH was observed. Therefore, the application of alkalizing agent has impact on pH-dependent solubility of drug like opioids and demonstrate its useful potential to be incorporated in bilayer ADERTs for opioids overdose crisis.
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Affiliation(s)
- Ankit Soni
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA
| | - Anuja Paprikar
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA
| | - Senshang Lin
- College of Pharmacy and Health Sciences, St. John's University, Queens, NY 11439, USA.
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8
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Use of Eudragit RS PO, HPMC K100M, Ethyl Cellulose, and Their Combination for Controlling Nicorandil Release from the Bilayer Tablets with Atorvastatin as an Immediate-Release Layer. J Pharm Innov 2020. [DOI: 10.1007/s12247-020-09513-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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9
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Portier C, Vigh T, Di Pretoro G, De Beer T, Vervaet C, Vanhoorne V. Continuous twin screw granulation: Impact of binder addition method and surfactants on granulation of a high-dosed, poorly soluble API. Int J Pharm 2020; 577:119068. [DOI: 10.1016/j.ijpharm.2020.119068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/14/2020] [Accepted: 01/17/2020] [Indexed: 10/25/2022]
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10
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Takano R, Maurer R, Jacob L, Stowasser F, Stillhart C, Page S. Formulating Amorphous Solid Dispersions: Impact of Inorganic Salts on Drug Release from Tablets Containing Itraconazole-HPMC Extrudate. Mol Pharm 2019; 17:2768-2778. [DOI: 10.1021/acs.molpharmaceut.9b01109] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Ryusuke Takano
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
- Discovery Technology Department, Chugai Pharmaceutical Co., Ltd, Shizuoka 412-8513, Japan
| | - Reto Maurer
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Laurence Jacob
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Frank Stowasser
- Roche Pharmaceutical Research and Early Development (pRED), Roche Innovation Center Basel, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Cordula Stillhart
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
| | - Susanne Page
- Pharmaceutical Research and Development, F. Hoffmann-La Roche Ltd, Basel 4070, Switzerland
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11
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Sütekin SD, Atıcı AB, Güven O, Hoffman AS. Controlling of free radical copolymerization of styrene and maleic anhydride via RAFT process for the preparation of acetaminophen drug conjugates. Radiat Phys Chem Oxf Engl 1993 2018. [DOI: 10.1016/j.radphyschem.2018.02.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Fayed MH, Abdel-Rahman SI, Alanazi FK, Ahmed MO, Tawfeek HM, Al-Shdefat RI. New gentle-wing high-shear granulator: impact of processing variables on granules and tablets characteristics of high-drug loading formulation using design of experiment approach. Drug Dev Ind Pharm 2017; 43:1584-1600. [PMID: 28480773 DOI: 10.1080/03639045.2017.1326930] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The aim of this work was to study the application of design of experiment (DoE) approach in defining design space for granulation and tableting processes using a novel gentle-wing high-shear granulator. According to quality-by-design (QbD) prospective, critical attributes of granules, and tablets should be ensured by manufacturing process design. A face-centered central composite design has been employed in order to investigate the effect of water amount (X1), impeller speed (X2), wet massing time (X3), and water addition rate (X4) as independent process variables on granules and tablets characteristics. Acetaminophen was used as a model drug and granulation experiments were carried out using dry addition of povidone k30. The dried granules have been analyzed for their size distribution, density, and flow pattern. Additionally, the produced tablets have been investigated for; weight uniformity, breaking force, friability and percent capping, disintegration time, and drug dissolution. Results of regression analysis showed that water amount, impeller speed and wet massing time have significant (p < .05) effect on granules and tablets characteristics. However, the water amount had the most pronounced effect as indicated by its higher parameter estimate. On the other hand, water addition rate showed a minimal impact on granules and tablets properties. In conclusion, water amount, impeller speed, and wet massing time could be considered as critical process variables. Thus, understanding the relationship between these variables and quality attributes of granules and corresponding tablets provides the basis for adjusting granulation variables in order to optimize product performance.
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Affiliation(s)
- Mohamed H Fayed
- a Department of Pharmaceutics, College of Pharmacy , Prince Sattam Bin Abdulaziz University , Al-kharj , Saudi Arabia
| | - Sayed I Abdel-Rahman
- b Department of Industrial Pharmacy, Faculty of Pharmacy , Assiut University , Assiut , Egypt
| | - Fars K Alanazi
- c Kayyali Chair for Pharmaceutical Industries, Department of Pharmaceutics, College of Pharmacy , King Saud University , Riyadh , Saudi Arabia
| | - Mahrous O Ahmed
- b Department of Industrial Pharmacy, Faculty of Pharmacy , Assiut University , Assiut , Egypt
| | - Hesham M Tawfeek
- b Department of Industrial Pharmacy, Faculty of Pharmacy , Assiut University , Assiut , Egypt
| | - Ramadan I Al-Shdefat
- a Department of Pharmaceutics, College of Pharmacy , Prince Sattam Bin Abdulaziz University , Al-kharj , Saudi Arabia
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13
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Kang WH, Nguyen HV, Park C, Choi YW, Lee BJ. Modulation of microenvironmental pH for dual release and reduced in vivo gastrointestinal bleeding of aceclofenac using hydroxypropyl methylcellulose-based bilayered matrix tablet. Eur J Pharm Sci 2017; 102:85-93. [DOI: 10.1016/j.ejps.2017.02.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 01/16/2017] [Accepted: 02/27/2017] [Indexed: 11/24/2022]
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14
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New blends of hydroxypropylmethylcellulose and Gelucire 44/14: physical property and controlled release of drugs with different solubility. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0322-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Lee Y, Kim K, Kim M, Choi DH, Jeong SH. Orally disintegrating films focusing on formulation, manufacturing process, and characterization. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0311-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Dual release and molecular mechanism of bilayered aceclofenac tablet using polymer mixture. Int J Pharm 2016; 515:233-244. [DOI: 10.1016/j.ijpharm.2016.10.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/26/2016] [Accepted: 10/09/2016] [Indexed: 11/20/2022]
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17
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Hamed R, Al Baraghthi T, Sunoqrot S. Correlation between the viscoelastic properties of the gel layer of swollen HPMC matrix tablets and their in vitro drug release. Pharm Dev Technol 2016; 23:838-848. [PMID: 27808590 DOI: 10.1080/10837450.2016.1257022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Drug release from hydroxypropyl methylcellulose (HPMC) hydrophilic matrix tablets is controlled by drug diffusion through the gel layer of the matrix-forming polymer upon hydration, matrix erosion or combination of diffusion and erosion mechanisms. In this study, the relationship between viscoelastic properties of the gel layer of swollen intact matrix tablets and drug release was investigated. Two sets of quetiapine fumarate (QF) matrix tablets were prepared using the high viscosity grade HPMC K4M at low (70 mg/tablet) and high (170 mg/tablet) polymer concentrations. Viscoelastic studies using a controlled stress rheometer were performed on swollen matrices following hydration in the dissolution medium for predetermined time intervals. The gel layer of swollen tablets exhibited predominantly elastic behavior. Results from the in vitro release study showed that drug release was strongly influenced by the viscoelastic properties of the gel layer of K4M tablets, which was further corroborated by results from water uptake studies conducted on intact tablets. The results provide evidence that the viscoelastic properties of the gel layer can be exploited to guide the selection of an appropriate matrix-forming polymer, to better understand the rate of drug release from matrix tablets in vitro and to develop hydrophilic controlled-release formulations.
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Affiliation(s)
- Rania Hamed
- a Department of Pharmacy, Faculty of Pharmacy , Al-Zaytoonah University of Jordan , Amman , Jordan
| | - Tamadur Al Baraghthi
- a Department of Pharmacy, Faculty of Pharmacy , Al-Zaytoonah University of Jordan , Amman , Jordan
| | - Suhair Sunoqrot
- a Department of Pharmacy, Faculty of Pharmacy , Al-Zaytoonah University of Jordan , Amman , Jordan
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18
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Nabais T, Zaraa S, Leclair G. Spray-dried high-amylose sodium carboxymethyl starch: impact of α-amylase on drug-release profile. Drug Dev Ind Pharm 2016; 42:1887-93. [DOI: 10.1080/03639045.2016.1181080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Teresa Nabais
- Faculté de pharmacie, Université de Montréal, Montreal, Quebec, Canada
| | - Sarra Zaraa
- Faculté de pharmacie, Université de Montréal, Montreal, Quebec, Canada
| | - Grégoire Leclair
- Faculté de pharmacie, Université de Montréal, Montreal, Quebec, Canada
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Ali T, Shoaib MH, Yousuf RI, Jabeen S, Muhammad IN, Tariq A. Use of hydrophilic and hydrophobic polymers for the development of controlled release tizanidine matrix tablets. BRAZ J PHARM SCI 2014. [DOI: 10.1590/s1984-82502014000400016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of the present study was to develop tizanidine controlled release matrix. Formulations were designed using central composite method with the help of design expert version 7.0 software. Avicel pH 101 in the range of 14-50% was used as a filler, while HPMC K4M and K100M in the range of 25-55%, Ethylcellulose 10 ST and 10FP in the range of 15 - 45% and Kollidon SR in the range of 25-60% were used as controlled release agents in designing different formulations. Various physical parameters including powder flow for blends and weight variation, thickness, hardness, friability, disintegration time and in-vitro release were tested for tablets. Assay of tablets were also performed as specified in USP 35 NF 32. Physical parameters of both powder blend and compressed tablets such as compressibility index, angle of repose, weight variation, thickness, hardness, friability, disintegration time and assay were evaluated and found to be satisfactory for formulations K4M2, K4M3, K4M9, K100M2, K100M3, K100M9, E10FP2, E10FP9, KSR2, KSR3 & KSR9. In vitro dissolution study was conducted in 900 ml of 0.1N HCl, phosphate buffer pH 4.5 and 6.8 medium using USP Apparatus II. In vitro release profiles indicated that formulations prepared with Ethocel 10 standard were unable to control the release of drug while formulations K4M2, K100M9, E10FP2 & KSR2 having polymer content ranging from 40-55% showed a controlled drug release pattern in the above mentioned medium. Zero-order drug release kinetics was observed for formulations K4M2, K100M9, E10FP2 & KSR2. Similarity test (f2) results for K4M2, E10FP2 & KSR2 were found to be comparable with reference formulation K100M9. Response Surface plots were also prepared for evaluating the effect of independent variable on the responses. Stability study was performed as per ICH guidelines and the calculated shelf life was 24-30 months for formulation K4M2, K100M9 and E10FP2.
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Cho JH, Kim YI, Kim DW, Yousaf AM, Kim JO, Woo JS, Yong CS, Choi HG. Development of novel fast-dissolving tacrolimus solid dispersion-loaded prolonged release tablet. Eur J Pharm Sci 2014; 54:1-7. [PMID: 24388864 DOI: 10.1016/j.ejps.2013.12.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Revised: 11/28/2013] [Accepted: 12/24/2013] [Indexed: 11/29/2022]
Abstract
The goal of this research was to develop a novel prolonged release tablet bioequivalent to the commercial sustained release capsule. A number of tacrolimus-loaded fast-dissolving solid dispersions containing various amounts of DOSS were prepared using the spray drying technique. Their solubility, dissolution and pharmacokinetics in rats were studied. DOSS increased drug solubility and dissolution in the solid dispersions. Compared with the drug powder, the solubility, dissolution and bioavailability of tacrolimus with the fast-dissolving solid dispersion containing tacrolimus/HP-β-CD/DOSS in the weight ratio of 5:40:4 were boosted by approximately 700-, 30- and 2-fold, respectively. Several tablet formulations were accomplished with this solid dispersion in combination with various ratios of HPMC/ethylcellulose. The release behaviour and pharmacokinetic studies in beagle dogs were assessed compared with the commercial prolonged release capsule. A decrease in HPMC/ethylcellulose ratios reduced the dissolution of tacrolimus from the tablets. Particularly, the tacrolimus-loaded prolonged release tablet consisting of fast-dissolving tacrolimus solid dispersion, HPMC, ethylcellulose and talc at the weight ratio of 20:66:112:2 exhibited a dissolution profile similar to that produced by the commercial prolonged release capsule. Furthermore, there were no significant differences in the AUC, Cmax, Tmax and MRT values between them in beagle dogs. Consequently, this tacrolimus-loaded prolonged release tablet might be bioequivalent to the tacrolimus-loaded commercial capsule.
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Affiliation(s)
- Jung Hyun Cho
- College of Pharmacy, Yeungnam University, 214-1, Dae-Dong, Gyongsan 712-749, South Korea
| | - Yong-Il Kim
- College of Pharmacy, Yeungnam University, 214-1, Dae-Dong, Gyongsan 712-749, South Korea; Pharmaceutical Research Centre, Hanmi Pharm. Co., Paltan-myeon, 893-5, Hwaseong, Gyeonggi-Do 445-913, South Korea
| | - Dong-Wuk Kim
- College of Pharmacy & Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 426-791, South Korea
| | - Abid Mehmood Yousaf
- College of Pharmacy & Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 426-791, South Korea
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, 214-1, Dae-Dong, Gyongsan 712-749, South Korea
| | - Jong Soo Woo
- Pharmaceutical Research Centre, Hanmi Pharm. Co., Paltan-myeon, 893-5, Hwaseong, Gyeonggi-Do 445-913, South Korea.
| | - Chul Soon Yong
- College of Pharmacy, Yeungnam University, 214-1, Dae-Dong, Gyongsan 712-749, South Korea.
| | - Han-Gon Choi
- College of Pharmacy, Yeungnam University, 214-1, Dae-Dong, Gyongsan 712-749, South Korea; College of Pharmacy & Institute of Pharmaceutical Science and Technology, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 426-791, South Korea.
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Qiu Y, Li X, Duan JZ. Influence of drug property and product design on in vitro-in vivo correlation of complex modified-release dosage forms. J Pharm Sci 2013; 103:507-16. [PMID: 24338862 DOI: 10.1002/jps.23804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 10/06/2013] [Accepted: 10/29/2013] [Indexed: 11/09/2022]
Abstract
The present study examines how drug's inherent properties and product design influence the evaluation and applications of in vitro-in vivo correlation (IVIVC) for modified-release (MR) dosage forms consisting of extended-release (ER) and immediate-release (IR) components with bimodal drug release. Three analgesic drugs were used as model compounds, and simulations of in vivo pharmacokinetic profiles were conducted using different release rates of the ER component and various IR percentages. Plasma concentration-time profiles exhibiting a wide range of tmax and maximum observed plasma concentration (Cmax) were obtained from superposition of the simulated IR and ER profiles based on a linear IVIVC. It was found that depending on the drug and dosage form design, direct use of the superposed IR and ER data for IVIVC modeling and prediction may (1) be acceptable within errors, (2) become unreliable and less meaningful because of the confounding effect from the non-negligible IR contribution to Cmax, or (3) be meaningless because of the insensitivity of Cmax to release rate change of the ER component. Therefore, understanding the drug, design and drug release characteristics of the product is essential for assessing the validity, accuracy, and reliability of IVIVC of complex MR products obtained via directly modeling of in vivo data.
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Affiliation(s)
- Yihong Qiu
- Oral Drug Products, Manufacturing Science and Technology, AbbVie Inc, North Chicago, Illinois
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22
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Efficacy of gastro-retentive forms of ecabet sodium in the treatment of gastric ulcer in rats. Arch Pharm Res 2013; 37:1053-62. [PMID: 24254934 DOI: 10.1007/s12272-013-0278-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 10/22/2013] [Indexed: 12/28/2022]
Abstract
The purpose of the present study is to investigate the influence of gastric retention of ecabet sodium (ECS) on its mucoprotective effect in rat ulcer models. Mini-tablets containing 9 mg ECS were prepared using the direct compression method. The release rates of ECS mini-tablets were controlled by the amount and viscosity grade of hydroxypropylmethyl cellulose incorporated. Gastric retention of ECS mini-tablets after oral administration to rats was visually confirmed using a fluorescence imaging system. Because ECS mini-tablets exhibited size-dependent gastric retention, their gastric retention time was prolonged as the release rate decreased. In the in vivo efficacy study, gastro-retentive dosage forms of ECS did not influence the mucoprotective effect in the immediate irritation model but enhanced the effect in the delayed irritation model compared with ECS suspension. This finding indicates that the duration of the mucoprotective effect of ECS can be extended by the employment of gastro-retentive dosage formulations and provides a rationale for development of ECS gastro-retentive dosage forms.
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Tran PHL, Tran TTD, Piao ZZ, Van Vo T, Park JB, Lim J, Oh KT, Rhee YS, Lee BJ. Physical properties and in vivo bioavailability in human volunteers of isradipine using controlled release matrix tablet containing self-emulsifying solid dispersion. Int J Pharm 2013; 450:79-86. [DOI: 10.1016/j.ijpharm.2013.04.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2012] [Revised: 02/24/2013] [Accepted: 04/08/2013] [Indexed: 10/26/2022]
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24
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Hughey JR, Keen JM, Miller DA, Kolter K, Langley N, McGinity JW. The use of inorganic salts to improve the dissolution characteristics of tablets containing Soluplus®-based solid dispersions. Eur J Pharm Sci 2013; 48:758-66. [DOI: 10.1016/j.ejps.2013.01.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 12/18/2012] [Accepted: 01/01/2013] [Indexed: 10/27/2022]
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25
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Cao QR, Choi JS, Liu Y, Xu WJ, Yang M, Lee BJ, Cui JH. A formulation approach for development of HPMC-based sustained release tablets for tolterodine tartrate with a low release variation. Drug Dev Ind Pharm 2012; 39:1720-30. [DOI: 10.3109/03639045.2012.730528] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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26
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Cao QR, Liu Y, Xu WJ, Lee BJ, Yang M, Cui JH. Enhanced oral bioavailability of novel mucoadhesive pellets containing valsartan prepared by a dry powder-coating technique. Int J Pharm 2012; 434:325-33. [DOI: 10.1016/j.ijpharm.2012.05.076] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2012] [Revised: 05/29/2012] [Accepted: 05/31/2012] [Indexed: 11/26/2022]
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Evaluation of oral carvedilol microparticles prepared by simple emulsion technique using poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and polycaprolactone as polymers. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2011.02.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Cho KH, Choi YK, Kang JH, Choi HG, Yong CS, Park YJ. Development of a novel combination tablet containing trimebutine maleate and mosapride citrate for the treatment of functional dyspepsia. Int J Pharm 2010; 400:145-52. [PMID: 20826201 DOI: 10.1016/j.ijpharm.2010.08.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 08/11/2010] [Accepted: 08/31/2010] [Indexed: 10/19/2022]
Abstract
To develop a novel combination tablet which contained 100 mg trimebutine maleate and 5 mg mosapride citrate (TMCT) for the treatment of functional dyspepsia, the wet granulation method was used to prepare TMCTs with various amounts of diluents and stabilizers. The levels of impurities, the stability and the dissolution of the TMCTs were investigated. The oral bioavailability of drugs in the TMCTs was then evaluated and compared to the simultaneous oral administration of trimebutine maleate-loaded and mosapride citrate-loaded commercial products in the beagle dog. Among the diluents tested, D-mannitol was selected, since the microcrystalline cellulose and lactose did not inhibit the production of drug impurities due to their hygroscopic properties and chemical interactions, respectively. Furthermore, succinic acid was selected as the stabilizer because it gave the lowest level of total drug impurities of the organic acids tested. The combination tablet of trimebutine maleate and mosapride citrate prepared with D-mannitol and succinic acid gave a total drug content higher than 95% and total impurities lower than 0.5% at 25°C/60% RH and 40°C/75% RH during a 6-month period, indicating that the tablets were stable for at least 6 months. Furthermore, this combination tablet showed a similar dissolution to the trimebutine maleate-loaded and mosapride citrate-loaded commercial products and gave insignificantly different absorption compared to these commercial products in beagle dogs. Thus, the combination tablet of trimebutine maleate and mosapride citrate prepared with D-mannitol and succinic acid would be a stable and effective oral pharmaceutical product for the treatment of functional dyspepsia.
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Affiliation(s)
- Kwan Hyung Cho
- College of Pharmacy, Yeungnam University, 214-1 Dae-Dong, Gyongsan 712-749, South Korea
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Lim HT, Balakrishnan P, Oh DH, Joe KH, Kim YR, Hwang DH, Lee YB, Yong CS, Choi HG. Development of novel sibutramine base-loaded solid dispersion with gelatin and HPMC: Physicochemical characterization and pharmacokinetics in beagle dogs. Int J Pharm 2010; 397:225-30. [DOI: 10.1016/j.ijpharm.2010.07.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Revised: 06/29/2010] [Accepted: 07/08/2010] [Indexed: 10/19/2022]
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31
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Matharu AS, Motto MG, Patel MR, Simonelli AP, Dave RH. Evaluation of hydroxypropyl methylcellulose matrix systems as swellable gastro-retentive drug delivery systems (GRDDS). J Pharm Sci 2010; 100:150-63. [PMID: 20572054 DOI: 10.1002/jps.22252] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2009] [Revised: 04/21/2010] [Accepted: 04/22/2010] [Indexed: 11/06/2022]
Abstract
Utilizing gastro-retentive drug delivery systems (GRDDS) to increase absorption of weakly basic drugs by extending their transit time is a promising approach. Swellable systems were evaluated for this purpose. Such systems demonstrate dual mechanism of release-diffusion and erosion. GRDDS requires maintaining its dimensions, which demands diffusion as a predominant mechanism of release (Fickian). In this work, dypyridamole, a weakly basic drug, together with various grades of hydroxypropyl methylcellulose and different excipients were evaluated for release and swelling properties. Dissolution data were analyzed by curve fitting to various models to estimate predominant release mechanism. It was found that matrices containing a swellable diluent like microcrystalline cellulose demonstrated predominantly Fickian mechanism of release, whereas soluble diluents (lactose and mannitol) contributed to a mixed mechanism of release. Addition of copovidone increased the swelling and survivability, whereas sodium chloride altered the erosion behavior. A correlation between matrix weight loss and drug release was obtained, which further consolidated the analysis. Correlation for the soluble excipients was linear, whereas that for the swellable excipient was nonlinear, implying predominance of Fickian release mechanism for the latter. Hence, the selection of excipients can influence matrix survivability and release kinetics, which can be used for developing GRDDS.
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Affiliation(s)
- Amol S Matharu
- Division of Pharmaceutical Sciences, Arnold & Marie Schwartz College of Pharmacy and Health Sciences, Long Island University, Brooklyn, New York 11201, USA
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Wang YJ, Ravenelle F, Zhu XX. NMR imaging study of cross-linked high-amylose starch tablets — The effect of drug loading. CAN J CHEM 2010. [DOI: 10.1139/v09-170] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
NMR imaging techniques were used to study the effect of drug loading in cross-linked high-amylose starch tablets. The tablets contained acetaminophen with loading levels from 10 to 40 wt%. The absolute amount of the drug released increased with a larger amount of drug loading, but the percentages of drug released had only minor differences for the different tablets, probably due to the rapid formation of a gel layer for all the tablets, which slowed down drug release significantly. The release of drugs from the tablets in all cases is dominated by a diffusion mechanism before the disappearance of the dry core of the tablets. Radial and axial swelling and water uptake were found to increase with the amount of drug loading. The diffusion rates of water were comparable at the initial stage for all the tablets with different loadings, but became faster later for the tablets with higher amounts of drug loading as water diffusion may be facilitated by the hydrophilicity of the drug.
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Affiliation(s)
- Y. J. Wang
- Département de Chimie, Université de Montréal, C. P. 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - F. Ravenelle
- Département de Chimie, Université de Montréal, C. P. 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - X. X. Zhu
- Département de Chimie, Université de Montréal, C. P. 6128, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
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Llusa M, Levin M, Snee RD, Muzzio FJ. Measuring the hydrophobicity of lubricated blends of pharmaceutical excipients. POWDER TECHNOL 2010. [DOI: 10.1016/j.powtec.2009.10.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Lee T, Hsu FB. A Cross-Performance Relationship Between Carr's Index and Dissolution Rate Constant: The Study of Acetaminophen Batches. Drug Dev Ind Pharm 2008; 33:1273-84. [DOI: 10.1080/03639040701542390] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Lee T, Hou HJ, Hsieh HY, Su YC, Wang YW, Hsu FB. The Prediction of the Dissolution Rate Constant by Mixing Rules: The Study of Acetaminophen Batches. Drug Dev Ind Pharm 2008; 34:522-35. [DOI: 10.1080/03639040701744194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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36
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Phaechamud T, Ritthidej GC. Formulation variables influencing drug release from layered matrix system comprising chitosan and xanthan gum. AAPS PharmSciTech 2008; 9:870-7. [PMID: 18654863 DOI: 10.1208/s12249-008-9127-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2008] [Accepted: 06/16/2008] [Indexed: 11/30/2022] Open
Abstract
The purpose of this study was to investigate the formulation variables influencing the drug release from the layered tablets containing chitosan and xanthan gum as matrix component. Increasing the amount of lactose could diminish pH sensitive release behavior of these matrix tablets. Effect of formulation variables on drug release from the prepared three-layered matrix tablets was investigated. The amount of drug loading did not affect the drug release which was influenced by the hydrodynamic force and the matrix composition. An increase in stirring rate correspondingly increased the release rate. Moreover, incorporation of soluble diluents in core or barrier could enhance the drug release. Least square fitting the experimental dissolution data to the mathematical expressions (power law, first order, Higuchi's and zero order) was carried out to study the drug release mechanism. Most dissolution profiles of the prepared three-layered tablets provided a better fit to zero order kinetic than to first order kinetic and Higuchi's equation.
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38
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Wei Y, Cheng F, Hou G, Sun S. Amphiphilic cellulose: Surface activity and aqueous self-assembly into nano-sized polymeric micelles. REACT FUNCT POLYM 2008. [DOI: 10.1016/j.reactfunctpolym.2008.02.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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39
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Mukherjee B, Dinda SC, Barik BB. Gum cordia: a novel matrix forming material for enteric resistant and sustained drug delivery--a technical note. AAPS PharmSciTech 2008; 9:330-3. [PMID: 18446499 DOI: 10.1208/s12249-008-9051-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Accepted: 01/22/2008] [Indexed: 11/30/2022] Open
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Nirmal J, Saisivam S, Peddanna C, Muralidharan S, Godwinkumar S, Nagarajan M. Bilayer Tablets of Atorvastatin Calcium and Nicotinic Acid: Formulation and Evaluation. Chem Pharm Bull (Tokyo) 2008; 56:1455-8. [DOI: 10.1248/cpb.56.1455] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Nabais T, Brouillet F, Kyriacos S, Mroueh M, Amores da Silva P, Bataille B, Chebli C, Cartilier L. High-amylose carboxymethyl starch matrices for oral sustained drug-release: In vitro and in vivo evaluation. Eur J Pharm Biopharm 2007; 65:371-8. [PMID: 17275270 DOI: 10.1016/j.ejpb.2006.12.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2006] [Revised: 12/05/2006] [Accepted: 12/06/2006] [Indexed: 11/23/2022]
Abstract
High-amylose corn starch, that contains 70% of amylose chains and 30% of amylopectin, has been used to obtain substituted amylose (SA) polymers. Tablets have been prepared by direct compression, i.e. dry mixing of drug and SA, followed by compression, which is the easiest way to manufacture an oral dosage form. Until now, their controlled-release properties have been assessed only by an in vitro dissolution test. Amylose-based polymers are normally subject to biodegradation by alpha-amylase enzymes present in the gastrointestinal tract, but matrix systems show no significant degradation of tablets by alpha-amylase in vitro. High-amylose sodium carboxymethyl starch (HASCA) is an interesting excipient for sustained drug-release in solid oral dosage forms. In addition to the easy manufacture of tablets by direct compression, the results show that in vitro drug-release from an optimized HASCA formulation is not affected by either acidic pH value or acidic medium residence time. In addition, a compressed blend of HASCA with an optimized quantity of sodium chloride provides a pharmaceutical sustained-release tablet with improved integrity for oral administration. In vivo studies demonstrate extended drug absorption, showing that the matrix tablets do not disintegrate immediately. Nevertheless, acetaminophen does not seem to be the most appropriate drug for this type of formulation.
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Affiliation(s)
- T Nabais
- Faculty of Pharmacy, University of Montreal, Montreal, Que., Canada
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42
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. SMS, . MNH, . KMI, . MA, . MSA, . MR. Effect of Bio-adhesive Polymers like HPMC, Gelatin, Na-CMC and Xanthan Gum on Theophylline Release from Respective Tablets. INT J PHARMACOL 2006. [DOI: 10.3923/ijp.2006.504.508] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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