51
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Calina I, Demeter M, Vancea C, Scarisoreanu A, Meltzer V. E-beam radiation synthesis of xanthan-gum/carboxymethylcellulose superabsorbent hydrogels with incorporated graphene oxide. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2018. [DOI: 10.1080/10601325.2018.1424552] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ion Calina
- National Institute for Laser, Plasma and Radiation Physics, Accelerators Laboratory, 409 Atomistilor, Magurele, Romania
- Faculty of Physics, University of Bucharest, 405 Atomistilor, Magurele, Romania
| | - Maria Demeter
- National Institute for Laser, Plasma and Radiation Physics, Accelerators Laboratory, 409 Atomistilor, Magurele, Romania
- Faculty of Chemistry, University of Bucharest, Bucharest, Romania
| | - Catalin Vancea
- National Institute for Laser, Plasma and Radiation Physics, Accelerators Laboratory, 409 Atomistilor, Magurele, Romania
- Faculty of Physics, University of Bucharest, 405 Atomistilor, Magurele, Romania
| | - Anca Scarisoreanu
- National Institute for Laser, Plasma and Radiation Physics, Accelerators Laboratory, 409 Atomistilor, Magurele, Romania
| | - Viorica Meltzer
- Faculty of Chemistry, University of Bucharest, Bucharest, Romania
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52
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New comprehensive mathematical model for HPMC-MCC based matrices to design oral controlled release systems. Eur J Pharm Biopharm 2017; 121:61-72. [DOI: 10.1016/j.ejpb.2017.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/14/2017] [Accepted: 09/11/2017] [Indexed: 02/01/2023]
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53
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Gaikwad VL, Bhatia NM, Singhvi I, Mahadik KR, Bhatia MS. Computational Modeling of Polymeric Physicochemical Properties for Formulation Development of a Drug Containing Basic Functionality. J Pharm Sci 2017; 106:3337-3345. [DOI: 10.1016/j.xphs.2017.06.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 06/20/2017] [Accepted: 06/27/2017] [Indexed: 10/19/2022]
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54
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Lee YS, Song JG, Lee SH, Han HK. Sustained-release solid dispersion of pelubiprofen using the blended mixture of aminoclay and pH independent polymers: preparation and in vitro/in vivo characterization. Drug Deliv 2017; 24:1731-1739. [PMID: 29124978 PMCID: PMC8240988 DOI: 10.1080/10717544.2017.1399304] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 10/24/2017] [Accepted: 10/28/2017] [Indexed: 12/03/2022] Open
Abstract
The present study aimed to develop the sustained-release oral dosage form of pelubiprofen (PEL) by using the blended mixture of 3-aminopropyl functionalized-magnesium phyllosilicate (aminoclay) and pH-independent polymers. The sustained-release solid dispersion (SRSD) was prepared by the solvent evaporation method and the optimal composition of SRSD was determined as the weight ratio of drug: Eudragit® RL PO: Eudragit® RS PO of 1:1:2 in the presence of 1% of aminoclay (SRSD(F6)). The dissolution profiles of SRSD(F6) were examined at different pHs and in the simulated intestinal fluids. The drug release from SRSD(F6) was limited at pH 1.2 and gradually increased at pH 6.8, resulting in the best fit to Higuchi equation. The sustained drug release from SRSD(F6) was also maintained in simulated intestinal fluid at fasted-state (FaSSIF) and fed-state (FeSSIF). The structural characteristics of SRSD(F6) were examined by using powder X-ray diffraction (PXRD), differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FT-IR), indicating the change of drug crystallinity to an amorphous form. After oral administration in rats, SRSD(F6) exhibited the prolonged drug exposure in plasma. For both PEL and PEL-transOH (active metabolite), once a day dosing of SRSD(F6) achieved oral exposure (AUC) comparable to those from the multiple dosing (3 times a day) of untreated drug. In addition, the in vivo absorption of SRSD(F6) was well-correlated with the in vitro dissolution data, establishing a good level A in vitro/in vivo correlation. These results suggest that SRSD(F6) should be promising for the sustained-release of PEL, thereby reducing the dosing frequency.
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Affiliation(s)
- Yeo-Song Lee
- College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Jae Guen Song
- College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Sang Hoon Lee
- College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
| | - Hyo-Kyung Han
- College of Pharmacy, Dongguk University-Seoul, Goyang, Korea
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55
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Ghori MU, Grover LM, Asare-Addo K, Smith AM, Conway BR. Evaluating the swelling, erosion, and compaction properties of cellulose ethers. Pharm Dev Technol 2017; 23:183-197. [PMID: 28985687 DOI: 10.1080/10837450.2017.1389958] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Swelling, erosion, deformation, and consolidation properties can affect the performance of cellulose ethers, the most commonly used matrix former in hydrophilic sustained tablet formulations. The present study was designed to comparatively evaluate the swelling, erosion, compression, compaction, and relaxation properties of the cellulose ethers in a comprehensive study using standardised conditions. The interrelationship between various compressional models and the inherent deformation and consolidation properties of the polymers on the derived swelling and erosion parameters are consolidated. The impact of swelling (Kw) on erosion rates (KE) and the inter-relationship between Heckel and Kawakita plasticity constants was also investigated. It is evident from the findings that the increases in both substitution and polymer chain length led to higher Kw, but a lower KE; this was also true for all particle size fractions regardless of polymer grade. Smaller particle size and high substitution levels tend to increase the relative density of the matrix but reduce porosity, yield pressure (Py), Kawakita plasticity parameter (b-1) and elastic relaxation. Both KW versus KE (R2 = 0.949-0.980) and Py versus. b-1 correlations (R2 = 0.820-0.934) were reasonably linear with regards to increasing hydroxypropyl substitution and molecular size. Hence, it can be concluded that the combined knowledge of swelling and erosion kinetics in tandem with the in- and out-of-die compression findings can be used to select a specific polymer grade and further to develop and optimize formulations for oral controlled drug delivery applications.
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Affiliation(s)
- Muhammad U Ghori
- a Department of Pharmacy, School of Applied Sciences , University of Huddersfield , Queensgate , Huddersfield , UK
| | - Liam M Grover
- b School of Chemical Engineering , University of Birmingham , Edgbaston , Birmingham , UK
| | - Kofi Asare-Addo
- a Department of Pharmacy, School of Applied Sciences , University of Huddersfield , Queensgate , Huddersfield , UK
| | - Alan M Smith
- a Department of Pharmacy, School of Applied Sciences , University of Huddersfield , Queensgate , Huddersfield , UK
| | - Barbara R Conway
- a Department of Pharmacy, School of Applied Sciences , University of Huddersfield , Queensgate , Huddersfield , UK
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56
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Mendonsa NS, Thipsay P, Kim DW, Martin ST, Repka MA. Bioadhesive Drug Delivery System for Enhancing the Permeability of a BCS Class III Drug via Hot-Melt Extrusion Technology. AAPS PharmSciTech 2017; 18:2639-2647. [PMID: 28247291 PMCID: PMC5600703 DOI: 10.1208/s12249-017-0728-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 01/23/2017] [Indexed: 11/30/2022] Open
Abstract
As the buccal route of administration has the ability to avoid the GI tract and first-pass effect by directing the absorption toward the cheek area, the bioavailability of BCS class III drugs can be increased through this route. Only a handful of studies have been conducted using oleic acid as a permeation enhancer in any transbuccal drug delivery system. Therefore, the objectives of this novel study were to develop a buccal tablet using two concentrations of oleic acid for a model BCS class III drug via hot-melt extrusion technology and to investigate the effects of oleic acid on the physicochemical properties of the tablet. The model drug selected was ondansetron hydrochloride. Formulations consisting of polymers (hydroxypropyl methylcellulose and polyethylene oxide) and two concentrations of oleic acid were prepared by hot-melt extrusion techniques. A melting point depression of the drug was obtained in the extruded granules as seen by the DSC thermograms. The ex vivo permeation studies showed a greater permeation of the drug in the formulation containing 10% oleic acid (F2) as compared to the formulation containing 20% oleic acid (F1), although not statistically significant. The in vitro bioadhesion studies, swelling studies, and surface pH measurements of the tablets were also conducted. In conclusion, permeation studies exhibited the potential of oleic acid as a buccal permeation enhancer as a significant permeation of the drug was obtained in the formulations. Hot-melt extrusion technology was successfully employed to formulate buccal tablets of ondansetron hydrochloride.
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Affiliation(s)
- Nicole S Mendonsa
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - Priyanka Thipsay
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - Dong Wuk Kim
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA
| | - Scott T Martin
- Thermo Fisher Scientific, Tewksbury, Massachusetts, 01876, USA
| | - Michael A Repka
- Department of Pharmaceutics and Drug Delivery, School of Pharmacy, The University of Mississippi, University, Mississippi, 38677, USA.
- Pii Center for Pharmaceutical Technology, School of Pharmacy, The University of Mississippi, Oxford, Mississippi, 38677, USA.
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57
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Ammonio methacrylate copolymer as a carrier for water-insoluble drug, preparation and characterization of an oral controlled-release matrix tablet. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.06.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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58
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Alginate hydrogel improves anti-angiogenic bevacizumab activity in cancer therapy. Eur J Pharm Biopharm 2017; 119:271-282. [DOI: 10.1016/j.ejpb.2017.06.028] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Revised: 04/09/2017] [Accepted: 06/28/2017] [Indexed: 01/30/2023]
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59
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An overview of carboxymethyl derivatives of chitosan: Their use as biomaterials and drug delivery systems. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 77:1349-1362. [DOI: 10.1016/j.msec.2017.03.198] [Citation(s) in RCA: 140] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/21/2017] [Accepted: 03/21/2017] [Indexed: 11/19/2022]
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60
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Ispas-Szabo P, De Koninck P, Calinescu C, Mateescu MA. Carboxymethyl Starch Excipients for Drug Chronodelivery. AAPS PharmSciTech 2017; 18:1673-1682. [PMID: 27686941 DOI: 10.1208/s12249-016-0634-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Accepted: 09/12/2016] [Indexed: 01/03/2023] Open
Abstract
Carboxymethyl starch (CMS) is a pH-responsive excipient exhibiting also interesting properties for applications in delayed drug delivery systems. This work was aimed to investigate the release properties of monolithic and dry-coated tablets based on ionic sodium CMS and on protonated CMS, formulated with three model tracers: acetaminophen, acetylsalicylic acid (ASA), and sodium diclofenac. The sodium or protonated CMS were obtained from the same CMS synthesis by controlling the final pH of reaction media. The two forms of CMS were confirmed by the Fourier transform infrared spectroscopy. The in vitro dissolution profiles for monolithic and double core tablets were different and allowed a better understanding of characteristics of the two excipient forms. It was found that the protonated CMS exhibited a better stability in simulated gastric fluid in comparison to its sodium salt in monolithic dosage forms, whereas both excipients afforded a complete gastric protection of drugs when formulated as dry-coated dosages. Determination of water uptake and erosion rate of monolithic matrices based on the two CMS forms showed different mechanisms involved in the delivery of the three model active molecules in simulated intestinal media. When pancreatic enzymes were added in dissolution media, the drug release was accelerated showing that CMS is still a substrate for alpha-amylase. Both sodium and protonated starch excipients, formulated as dry-coated dosages, afforded a good gastro-protection and allowed a drug chronodelivery at various intervals up to 4-5 h. They could be considered as an alternative for delayed delivery and a solvent-free coating procedure.
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61
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Evaluations of the Effect of Sodium Metabisulphite on the Stability and Dissolution Rates of Various Model Drugs from the Extended Release Polyethylene Oxide Matrices. J Pharm Innov 2017. [DOI: 10.1007/s12247-017-9286-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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62
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Markl D, Zeitler JA, Rasch C, Michaelsen MH, Müllertz A, Rantanen J, Rades T, Bøtker J. Analysis of 3D Prints by X-ray Computed Microtomography and Terahertz Pulsed Imaging. Pharm Res 2017; 34:1037-1052. [PMID: 28004318 PMCID: PMC5382186 DOI: 10.1007/s11095-016-2083-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Accepted: 12/07/2016] [Indexed: 11/04/2022]
Abstract
PURPOSE A 3D printer was used to realise compartmental dosage forms containing multiple active pharmaceutical ingredient (API) formulations. This work demonstrates the microstructural characterisation of 3D printed solid dosage forms using X-ray computed microtomography (XμCT) and terahertz pulsed imaging (TPI). METHODS Printing was performed with either polyvinyl alcohol (PVA) or polylactic acid (PLA). The structures were examined by XμCT and TPI. Liquid self-nanoemulsifying drug delivery system (SNEDDS) formulations containing saquinavir and halofantrine were incorporated into the 3D printed compartmentalised structures and in vitro drug release determined. RESULTS A clear difference in terms of pore structure between PVA and PLA prints was observed by extracting the porosity (5.5% for PVA and 0.2% for PLA prints), pore length and pore volume from the XμCT data. The print resolution and accuracy was characterised by XμCT and TPI on the basis of the computer-aided design (CAD) models of the dosage form (compartmentalised PVA structures were 7.5 ± 0.75% larger than designed; n = 3). CONCLUSIONS The 3D printer can reproduce specific structures very accurately, whereas the 3D prints can deviate from the designed model. The microstructural information extracted by XμCT and TPI will assist to gain a better understanding about the performance of 3D printed dosage forms.
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Affiliation(s)
- Daniel Markl
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, UK
| | - J Axel Zeitler
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, UK
| | - Cecilie Rasch
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Maria Høtoft Michaelsen
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Anette Müllertz
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Jukka Rantanen
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Thomas Rades
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Johan Bøtker
- Department of Pharmacy, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark.
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63
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Iurian S, Turdean L, Tomuta I. Risk assessment and experimental design in the development of a prolonged release drug delivery system with paliperidone. Drug Des Devel Ther 2017; 11:733-746. [PMID: 28331293 PMCID: PMC5357073 DOI: 10.2147/dddt.s125323] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This study focuses on the development of a drug product based on a risk assessment-based approach, within the quality by design paradigm. A prolonged release system was proposed for paliperidone (Pal) delivery, containing Kollidon® SR as an insoluble matrix agent and hydroxypropyl cellulose, hydroxypropyl methylcellulose (HPMC), or sodium carboxymethyl cellulose as a hydrophilic polymer. The experimental part was preceded by the identification of potential sources of variability through Ishikawa diagrams, and failure mode and effects analysis was used to deliver the critical process parameters that were further optimized by design of experiments. A D-optimal design was used to investigate the effects of Kollidon SR ratio (X1), the type of hydrophilic polymer (X2), and the percentage of hydrophilic polymer (X3) on the percentages of dissolved Pal over 24 h (Y1–Y9). Effects expressed as regression coefficients and response surfaces were generated, along with a design space for the preparation of a target formulation in an experimental area with low error risk. The optimal formulation contained 27.62% Kollidon SR and 8.73% HPMC and achieved the prolonged release of Pal, with low burst effect, at ratios that were very close to the ones predicted by the model. Thus, the parameters with the highest impact on the final product quality were studied, and safe ranges were established for their variations. Finally, a risk mitigation and control strategy was proposed to assure the quality of the system, by constant process monitoring.
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Affiliation(s)
- Sonia Iurian
- Department of Pharmaceutical Technology and Biopharmacy, University of Medicine and Pharmacy Iuliu Haţieganu, Cluj-Napoca, Romania
| | - Luana Turdean
- Department of Pharmaceutical Technology and Biopharmacy, University of Medicine and Pharmacy Iuliu Haţieganu, Cluj-Napoca, Romania
| | - Ioan Tomuta
- Department of Pharmaceutical Technology and Biopharmacy, University of Medicine and Pharmacy Iuliu Haţieganu, Cluj-Napoca, Romania
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64
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Politis SN, Rekkas DM. Development of a fast, lean and agile direct pelletization process using experimental design techniques. Drug Dev Ind Pharm 2017; 43:545-557. [PMID: 28056567 DOI: 10.1080/03639045.2016.1269121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A novel hot melt direct pelletization method was developed, characterized and optimized, using statistical thinking and experimental design tools. Mixtures of carnauba wax (CW) and HPMC K100M were spheronized using melted gelucire 50-13 as a binding material (BM). Experimentation was performed sequentially; a fractional factorial design was set up initially to screen the factors affecting the process, namely spray rate, quantity of BM, rotor speed, type of rotor disk, lubricant-glidant presence, additional spheronization time, powder feeding rate and quantity. From the eight factors assessed, three were further studied during process optimization (spray rate, quantity of BM and powder feeding rate), at different ratios of the solid mixture of CW and HPMC K100M. The study demonstrated that the novel hot melt process is fast, efficient, reproducible and predictable. Therefore, it can be adopted in a lean and agile manufacturing setting for the production of flexible pellet dosage forms with various release rates easily customized between immediate and modified delivery.
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Affiliation(s)
- Stavros N Politis
- a Department of Pharmacy, National and Kapodistrian University of Athens , Panepistimiopolis Zografou , Athens , Greece
| | - Dimitrios M Rekkas
- a Department of Pharmacy, National and Kapodistrian University of Athens , Panepistimiopolis Zografou , Athens , Greece
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65
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Dzajkowska M, Hanna K, Anna M, Maja S, Dagmara D, Anna S, Malgorzata S. Prolonged-release minitablets with carbamazepine – preliminary observations in vitro. J Pharm Pharmacol 2016; 69:471-479. [DOI: 10.1111/jphp.12670] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 10/23/2016] [Indexed: 11/28/2022]
Abstract
Abstract
Objective
The aim was to develop prolonged-release minitablets (MT) with carbamazepine (CBZ).
Methods
Matrix-type 3-mm MT (5 mg CBZ) were prepared by direct compression using hydrophilic (hypromellose) or hydrophobic polymers (ethylcellulose, Kollidon SR, glyceryl behenate). Coated prolonged-release MT (2.5 mm/3 mg of CBZ) were produced using ethylcellulose or Eudragit RL/RS. The release tests were performed in a basket apparatus with water or 1% sodium lauryl sulphate solution as dissolution media.
Key findings
High-viscosity hypromellose used as a matrix polymer resulted in slow release of CBZ (80% released during 12 h). Dissolution was slower from hydrophobic matrices. Non-swelling MT cores were successfully coated with Eudragit RL/RS, which resulted in the prolonged release of CBZ (80%/14 h), depending on the film thickness and Eudragit composition. Careful choice of pore formers in the coating film allowed to reduce lag time. Ethylcellulose was unsuitable as coating polymer due to low permeability to CBZ and unsatisfying mechanical resistance of the films modified with hypromellose.
Conclusion
Prolonged release of CBZ was obtained from both matrix-type and coated MT. Further development of MT as a single unit or multicompartment prolonged-release new dosage form especially suitable for children has been justified.
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Affiliation(s)
- Magdalena Dzajkowska
- Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
| | - Kotlowska Hanna
- Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
| | - Madanecka Anna
- Polpharma SA Pharmaceutical Works, Starogard Gdanski, Poland
| | - Szczepanska Maja
- Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
| | - Doniza Dagmara
- Student Chapter of the International Society of Pharmaceutical Engineering (ISPE), Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
| | - Sosnowicz Anna
- Student Chapter of the International Society of Pharmaceutical Engineering (ISPE), Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
| | - Sznitowska Malgorzata
- Department of Pharmaceutical Technology, Medical University of Gdansk, Gdansk, Poland
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66
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Zhou X, Wang P, Wang J, Liu Z, Hong X, Xiao Y, Liu P, Hu X. Hydroxyethyl Pachyman as a novel excipient for sustained-release matrix tablets. Carbohydr Polym 2016; 154:1-7. [DOI: 10.1016/j.carbpol.2016.08.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 08/01/2016] [Accepted: 08/09/2016] [Indexed: 10/21/2022]
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67
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Multifractal Characterization of Pharmaceutical Hot-Melt Extrudates. Pharm Res 2016; 34:321-332. [DOI: 10.1007/s11095-016-2064-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/02/2016] [Indexed: 12/19/2022]
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68
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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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69
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Gaikwad VL, Bhatia MS, Singhvi I. Statistical significance of polymeric physicochemical properties in the development of formulations containing a drug from neutral class. ARAB J CHEM 2016. [DOI: 10.1016/j.arabjc.2015.06.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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70
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Raafat AI, Ali AEH. pH-controlled drug release of radiation synthesized graphene oxide/(acrylic acid-co-sodium alginate) interpenetrating network. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1818-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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71
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Sionkowska A, Kaczmarek B, Gadzala-Kopciuch R. Gentamicin release from chitosan and collagen composites. J Drug Deliv Sci Technol 2016. [DOI: 10.1016/j.jddst.2016.09.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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72
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Quantitative structure property relationship modeling of excipient properties for prediction of formulation characteristics. Carbohydr Polym 2016; 151:593-599. [DOI: 10.1016/j.carbpol.2016.05.114] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/21/2016] [Accepted: 05/31/2016] [Indexed: 11/18/2022]
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73
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Hu A, Chen C, Mantle MD, Wolf B, Gladden LF, Rajabi-Siahboomi A, Missaghi S, Mason L, Melia CD. The Properties of HPMC:PEO Extended Release Hydrophilic Matrices and their Response to Ionic Environments. Pharm Res 2016; 34:941-956. [DOI: 10.1007/s11095-016-2031-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 08/25/2016] [Indexed: 01/22/2023]
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74
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Alhijjaj M, Belton P, Qi S. An investigation into the use of polymer blends to improve the printability of and regulate drug release from pharmaceutical solid dispersions prepared via fused deposition modeling (FDM) 3D printing. Eur J Pharm Biopharm 2016; 108:111-125. [PMID: 27594210 DOI: 10.1016/j.ejpb.2016.08.016] [Citation(s) in RCA: 150] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/17/2016] [Accepted: 08/29/2016] [Indexed: 12/13/2022]
Abstract
FDM 3D printing has been recently attracted increasing research efforts towards the production of personalized solid oral formulations. However, commercially available FDM printers are extremely limited with regards to the materials that can be processed to few types of thermoplastic polymers, which often may not be pharmaceutically approved materials nor ideal for optimizing dosage form performance of poor soluble compounds. This study explored the use of polymer blends as a formulation strategy to overcome this processability issue and to provide adjustable drug release rates from the printed dispersions. Solid dispersions of felodipine, the model drug, were successfully fabricated using FDM 3D printing with polymer blends of PEG, PEO and Tween 80 with either Eudragit E PO or Soluplus. As PVA is one of most widely used polymers in FDM 3D printing, a PVA based solid dispersion was used as a benchmark to compare the polymer blend systems to in terms of processability. The polymer blends exhibited excellent printability and were suitable for processing using a commercially available FDM 3D printer. With 10% drug loading, all characterization data indicated that the model drug was molecularly dispersed in the matrices. During in vitro dissolution testing, it was clear that the disintegration behavior of the formulations significantly influenced the rates of drug release. Eudragit EPO based blend dispersions showed bulk disintegration; whereas the Soluplus based blends showed the 'peeling' style disintegration of strip-by-strip. The results indicated that interplay of the miscibility between excipients in the blends, the solubility of the materials in the dissolution media and the degree of fusion between the printed strips during FDM process can be used to manipulate the drug release rate of the dispersions. This brings new insight into the design principles of controlled release formulations using FDM 3D printing.
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Affiliation(s)
- Muqdad Alhijjaj
- School of Pharmacy, University of East Anglia, Norwich, Norfolk NR4 7TJ, UK; Department of Pharmaceutics, College of Pharmacy, University of Basrah, Basrah, Iraq
| | - Peter Belton
- School of Chemistry, University of East Anglia, Norwich, Norfolk NR4 7TJ, UK
| | - Sheng Qi
- School of Pharmacy, University of East Anglia, Norwich, Norfolk NR4 7TJ, UK.
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75
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Advances in mechanistic understanding of release rate control mechanisms of extended-release hydrophilic matrix tablets. Ther Deliv 2016; 7:553-72. [DOI: 10.4155/tde-2016-0026] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Approaches to characterizing and developing understanding around the mechanisms that control the release of drugs from hydrophilic matrix tablets are reviewed. While historical context is provided and direct physical characterization methods are described, recent advances including the role of percolation thresholds, the application on magnetic resonance and other spectroscopic imaging techniques are considered. The influence of polymer and dosage form characteristics are reviewed. The utility of mathematical modeling is described. Finally, how all the information derived from applying the developed mechanistic understanding from all of these tools can be brought together to develop a robust and reliable hydrophilic matrix extended-release tablet formulation is proposed.
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76
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Kono H, Oshima K, Hashimoto H, Shimizu Y, Tajima K. NMR characterization of sodium carboxymethyl cellulose: Substituent distribution and mole fraction of monomers in the polymer chains. Carbohydr Polym 2016; 146:1-9. [DOI: 10.1016/j.carbpol.2016.03.021] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 03/07/2016] [Accepted: 03/12/2016] [Indexed: 10/22/2022]
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77
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Inhibition of Glutathione Biosynthesis Sensitizes Plasmodium berghei to Antifolates. Antimicrob Agents Chemother 2016; 60:3057-64. [PMID: 26953195 DOI: 10.1128/aac.01836-15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Accepted: 03/03/2016] [Indexed: 01/13/2023] Open
Abstract
Glutathione plays a central role in maintaining cellular redox homeostasis, and modulations to this status may affect malaria parasite sensitivity to certain types of antimalarials. In this study, we demonstrate that inhibition of glutathione biosynthesis in the Plasmodium berghei ANKA strain through disruption of the γ-glutamylcysteine synthetase (γ-GCS) gene, which encodes the first and rate-limiting enzyme in the glutathione biosynthetic pathway, significantly sensitizes parasites in vivo to pyrimethamine and sulfadoxine, but not to chloroquine, artesunate, or primaquine, compared with control parasites containing the same pyrimethamine-resistant marker cassette. Treatment of mice infected with an antifolate-resistant P. berghei control line with a γ-GCS inhibitor, buthionine sulfoximine, could partially abrogate pyrimethamine and sulfadoxine resistance. The role of glutathione in modulating the malaria parasite's response to antifolates suggests that development of specific inhibitors against Plasmodium γ-GCS may offer a new approach to counter Plasmodium antifolate resistance.
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78
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Boni FI, Prezotti FG, Cury BSF. Gellan gum microspheres crosslinked with trivalent ion: effect of polymer and crosslinker concentrations on drug release and mucoadhesive properties. Drug Dev Ind Pharm 2016; 42:1283-90. [DOI: 10.3109/03639045.2015.1125915] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Fernanda Isadora Boni
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Fabíola Garavello Prezotti
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
| | - Beatriz Stringhetti Ferreira Cury
- Graduate Program in Pharmaceutical Sciences, Department of Drugs and Pharmaceuticals, School of Pharmaceutical Sciences, São Paulo State University – UNESP, Araraquara, SP, Brazil
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79
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Intratablet S-nitrosation: A New Approach for the Oral Administration of S-nitrosothiols as Nitric Oxide Donors. J Pharm Sci 2016; 105:359-61. [DOI: 10.1016/j.xphs.2015.10.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/21/2015] [Accepted: 10/12/2015] [Indexed: 11/20/2022]
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80
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Ofori-Kwakye K, Mfoafo KA, Kipo SL, Kuntworbe N, Boakye-Gyasi ME. Development and evaluation of natural gum-based extended release matrix tablets of two model drugs of different water solubilities by direct compression. Saudi Pharm J 2016; 24:82-91. [PMID: 26903772 PMCID: PMC4720012 DOI: 10.1016/j.jsps.2015.03.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 03/13/2015] [Indexed: 11/05/2022] Open
Abstract
The study was aimed at developing extended release matrix tablets of poorly water-soluble diclofenac sodium and highly water-soluble metformin hydrochloride by direct compression using cashew gum, xanthan gum and hydroxypropylmethylcellulose (HPMC) as release retardants. The suitability of light grade cashew gum as a direct compression excipient was studied using the SeDeM Diagram Expert System. Thirteen tablet formulations of diclofenac sodium (∼100 mg) and metformin hydrochloride (∼200 mg) were prepared with varying amounts of cashew gum, xanthan gum and HPMC by direct compression. The flow properties of blended powders and the uniformity of weight, crushing strength, friability, swelling index and drug content of compressed tablets were determined. In vitro drug release studies of the matrix tablets were conducted in phosphate buffer (diclofenac: pH 7.4; metformin: pH 6.8) and the kinetics of drug release was determined by fitting the release data to five kinetic models. Cashew gum was found to be suitable for direct compression, having a good compressibility index (ICG) value of 5.173. The diclofenac and metformin matrix tablets produced generally possessed fairly good physical properties. Tablet swelling and drug release in aqueous medium were dependent on the type and amount of release retarding polymer and the solubility of drug used. Extended release of diclofenac (∼24 h) and metformin (∼8-12 h) from the matrix tablets in aqueous medium was achieved using various blends of the polymers. Drug release from diclofenac tablets fitted zero order, first order or Higuchi model while release from metformin tablets followed Higuchi or Hixson-Crowell model. The mechanism of release of the two drugs was mostly through Fickian diffusion and anomalous non-Fickian diffusion. The study has demonstrated the potential of blended hydrophilic polymers in the design and optimization of extended release matrix tablets for soluble and poorly soluble drugs by direct compression.
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Affiliation(s)
- Kwabena Ofori-Kwakye
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
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81
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Shojaee S, Emami P, Mahmood A, Rowaiye Y, Dukulay A, Kaialy W, Cumming I, Nokhodchi A. An Investigation on the Effect of Polyethylene Oxide Concentration and Particle Size in Modulating Theophylline Release from Tablet Matrices. AAPS PharmSciTech 2015; 16:1281-9. [PMID: 25771738 PMCID: PMC4666262 DOI: 10.1208/s12249-015-0295-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 01/15/2015] [Indexed: 11/30/2022] Open
Abstract
Polyethylene oxide has been researched extensively as an alternative polymer to hydroxypropyl methylcellulose (HPMC) in controlled drug delivery due to its desirable swelling properties and its availability in a number of different viscosity grades. Previous studies on HPMC have pointed out the importance of particle size on drug release, but as of yet, no studies have investigated the effect of particle size of polyethylene oxide (polyox) on drug release. The present study explored the relationship between polymer level and particle size to sustain the drug release. Tablets produced contained theophylline as their active ingredient and consisted of different polyethylene oxide particle size fractions (20-45, 45-90, 90-180 and 180-425 μm). It was shown that matrices containing smaller particle sizes of polyox produced harder tablets than when larger polyox particles were used. The release studies showed that matrices consisting of large polyox particles showed a faster release rate than matrices made from smaller particles. Molecular weight (MW) of the polymer was a key determining step in attaining sustained release, with the high MW of polyox resulting in a delayed release profile. The results showed that the effect of particle size on drug release was more detrimental when a low concentration of polyox was used. This indicates that care must be taken when low levels of polyox with different particle size fractions are used. More robust formulations could be obtained when the concentration of polyox is high. Differential scanning calorimetry (DSC) traces showed that particle size had no major effect on the thermal behaviour of polyox particles.
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Affiliation(s)
- Saeed Shojaee
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Parastou Emami
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Ahmad Mahmood
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Yemisi Rowaiye
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Alusine Dukulay
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Waseem Kaialy
- School of Pharmacy, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, WV1 1LY, UK
| | - Iain Cumming
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Ali Nokhodchi
- School of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QG, UK.
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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82
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Lefnaoui S, Moulai-Mostefa N. Synthesis and evaluation of the structural and physicochemical properties of carboxymethyl pregelatinized starch as a pharmaceutical excipient. Saudi Pharm J 2015; 23:698-711. [PMID: 26702266 PMCID: PMC4669421 DOI: 10.1016/j.jsps.2015.01.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Accepted: 01/27/2015] [Indexed: 12/05/2022] Open
Abstract
A pregelatinized starch (PGS) was derivatized with sodium chloroacetate (SCA) in alcoholic medium under alkaline condition to produce carboxymethyl pregelatinized starch (CMPGS) with various degrees of substitution (DS). Influence of the molar ratio of SCA to the glucopyranose units (SCA/GU), reaction time, temperature and the amount of sodium hydroxide on the degree of substitution (DS) and the reaction efficiency (RE) was studied. An optimal concentration of 30% of NaOH, for a reaction time of 1 h at 50 °C and molar ratio (SCA/GU) equal to 1.0, yielded an optimal DS of 0.55 and a RE of 55%. SEM micrographs revealed that the carboxymethylation assigned the structural arrangement of CMPGS and caused the granular disintegration. Wide angle diffraction X-ray (XRD) showed that the crystallinity of starch was obviously varied after carboxymethylation. New bands in FTIR spectra at 1417 and 1603 cm(-1) indicated the presence of carboxymethyl groups. The solubility and viscosity of CMPGS increased with an increase in the degree of modification. In order to investigate the influence of DS on physical and drug release properties, CMPGS obtained with DS in the range of 0.12-0.55 was evaluated as tablet excipient for sustained drug release. Dissolution tests performed in phosphate buffer (pH 6.8), with Ibuprofen as drug model (25% loading) showed that CMPGS seems suitable to be used as sustained release excipient since the drug release was driven over a period up to 8 h. The in vitro release kinetics studies revealed that all formulations fit well with Korsmeyer-Peppas model and the mechanism of drug release is non-Fickian diffusion.
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Affiliation(s)
- Sonia Lefnaoui
- Materials and Environmental Laboratory, Faculty of Sciences and Technology, University of Medea, Ain D’Heb, 2001 Medea, Algeria
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83
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Knöös P, Svensson AV, Ulvenlund S, Wahlgren M. Release of a Poorly Soluble Drug from Hydrophobically Modified Poly (Acrylic Acid) in Simulated Intestinal Fluids. PLoS One 2015; 10:e0140709. [PMID: 26473964 PMCID: PMC4608824 DOI: 10.1371/journal.pone.0140709] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 09/28/2015] [Indexed: 12/02/2022] Open
Abstract
A large part of new pharmaceutical substances are characterized by a poor solubility and high hydrophobicity, which might lead to a difference in drug adsorption between fasted and fed patients. We have previously evaluated the release of hydrophobic drugs from tablets based on Pemulen TR2 and showed that the release can be manipulated by adding surfactants. Here we further evaluate the possibility to use Pemulen TR2 in controlled release tablet formulations containing a poorly soluble substance, griseofulvin. The release is evaluated in simulated intestinal media that model the fasted state (FaSSIF medium) or fed state (FeSSIF). The rheology of polymer gels is studied in separate experiments, in order to gain more information on possible interactions. The release of griseofulvin in tablets without surfactant varied greatly and the slowest release were observed in FeSSIF. Addition of SDS to the tablets eliminated the differences and all tablets showed a slow linear release, which is of obvious relevance for robust drug delivery. Comparing the data from the release studies and the rheology experiment showed that the effects on the release from the different media could to a large extent be rationalised as a consequence of the interactions between the polymer and the surfactants in the media. The study shows that Pemulen TR2 is a candidate for controlled release formulations in which addition of surfactant provides a way to eliminate food effects on the release profile. However, the formulation used needs to be designed to give a faster release rate than the tablets currently investigated.
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Affiliation(s)
- Patrik Knöös
- Department of Chemistry, Division of Physical Chemistry, Lund University, Lund, Sweden
| | | | | | - Marie Wahlgren
- Department of food technology engineering and nutrition, Lund University, Lund, Sweden
- * E-mail:
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84
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Ngwuluka NC, Choonara YE, Kumar P, du Toit LC, Modi G, Pillay V. An optimized gastroretentive nanosystem for the delivery of levodopa. Int J Pharm 2015; 494:49-65. [DOI: 10.1016/j.ijpharm.2015.08.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/03/2015] [Accepted: 08/05/2015] [Indexed: 12/15/2022]
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85
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Pectin/anhydrous dibasic calcium phosphate matrix tablets for in vitro controlled release of water-soluble drug. Int J Pharm 2015; 494:235-43. [DOI: 10.1016/j.ijpharm.2015.08.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 08/06/2015] [Accepted: 08/08/2015] [Indexed: 01/09/2023]
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86
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Obeidat WM, Nokhodchi A, Alkhatib H. Evaluation of Matrix Tablets Based on Eudragit®E100/Carbopol®971P Combinations for Controlled Release and Improved Compaction Properties of Water Soluble Model Drug Paracetamol. AAPS PharmSciTech 2015; 16:1169-79. [PMID: 25724162 PMCID: PMC4674641 DOI: 10.1208/s12249-015-0301-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 01/26/2015] [Indexed: 11/30/2022] Open
Abstract
The purpose of this work was to investigate the influence of Eudragit®E100 polymer in modifying the release rates and compaction properties of water soluble model drug paracetamol from Carbopol®971P NF polymer matrix tablets prepared by direct compression. The effects of the ratio of the two polymers, the total polymeric content, and the tablets mechanical strength on paracetamol release rates were investigated. Dissolution studies were conducted using USP XX Π rotating paddle apparatus at 50 rpm and 37°C at three different stages (pH 1.2, 4.8, and 6.8). Results showed that the polymers combination improved significantly the compaction properties of paracetamol tablets as evident by the higher crushing strengths (8.3 ± 0.4 Kp) compared to polymer-free tablets (3.4 ± 0.2 Kp) at intermediate compression pressure of 490 MPa. When combined with Carbopol®971P NF, Eudragit®E100 was found to be capable of extending paracetamol release for more than 12 h compared to 1 h for polymers-free tablets. The combined polymers were able to control paracetamol release in a pH independent pattern. The f2 (similarity factor) analysis showed that the ratio between the polymers and the total polymer concentration exhibited significant impact on drug release rates. In conclusion, Eudragit®E100 when combined with Carbopol®971P NF was capable of improving the compaction and sustained release properties of paracetamol. Korsmeyer-Peppas model was found to be the most suitable for fitting drug release data. The polymer combinations can potentially be used to control the release rates of highly water soluble drugs.
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Affiliation(s)
- Wasfy M Obeidat
- College of Pharmacy, Department of Pharmacy Pharmaceutical Technology, Jordan University of Science and Technology, Irbid, P.O. Box 3030, Jordan.
| | - Ali Nokhodchi
- JMS Building, School of Life Sciences, University of Sussex, Brighton, BN1 9QG, UK
| | - Hatim Alkhatib
- College of Pharmacy, Department of Pharmaceutics and Pharmaceutical Technology, Amman, Jordan
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87
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Characteristics of carboxymethyl cellulose/sericin hydrogels and the influence of molecular weight of carboxymethyl cellulose. Macromol Res 2015. [DOI: 10.1007/s13233-015-3116-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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88
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Sharma P, Modi SR, Bansal AK. Co-processing as a tool to improve aqueous dispersibility of cellulose ethers. Drug Dev Ind Pharm 2015; 41:1745-58. [DOI: 10.3109/03639045.2015.1058814] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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89
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Mahapatra AK, Sameeraja NH, Murthy PN. Development of modified-release tablets of zolpidem tartrate by biphasic quick/slow delivery system. AAPS PharmSciTech 2015; 16:579-88. [PMID: 25391273 PMCID: PMC4444639 DOI: 10.1208/s12249-014-0236-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 10/09/2014] [Indexed: 11/30/2022] Open
Abstract
Zolpidem tartrate is a non-benzodiazepine analogue of imidazopyridine of sedative and hypnotic category. It has a short half-life with usual dosage regimen being 5 mg, two times a day, or 10 mg, once daily. The duration of action is considered too short in certain circumstances. Thus, it is desirable to lengthen the duration of action. The formulation design was implemented by preparing extended-release tablets of zolpidem tartrate using the biphasic delivery system technology, where sodium starch glycolate acts as a superdisintegrant in immediate-release part and hydroxypropyl methyl cellulose as a release retarding agent in extended-release core. Tablets were prepared by direct compression. Both the core and the coat contained the drug. The pre-compression blends were evaluated for angle of repose, bulk density, and compressibility index. The tablets were evaluated for thickness, hardness, weight variation test, friability, and in vitro release studies. No interaction was observed between zolpidem tartrate and excipients from the Fourier transform infrared spectroscopy and differential scanning calorimetry analysis. The results of all the formulations prepared were compared with reference product Stilnoct®. Optimized formulations showed release patterns that match the United States Pharmacopeia (USP) guidelines for zolpidem tartrate extended-release tablets. The mechanism of drug release was studied using different mathematical models, and the optimized formulation has shown Fickian diffusion. Accelerated stability studies were performed on the optimized formulation.
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Affiliation(s)
- Anjan Kumar Mahapatra
- Department of Pharmaceutical Technology, Maharajah's College of Pharmacy, Vizianagaram-2, Andhra Pradesh, India,
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90
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Spizzirri UG, Cirillo G, Curcio M, Spataro T, Picci N, Iemma F. Coated biodegradable casein nanospheres: a valuable tool for oral drug delivery. Drug Dev Ind Pharm 2015; 41:2006-17. [PMID: 26023992 DOI: 10.3109/03639045.2015.1040415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Biodegradable casein nanospheres for the sustained release of bioactive molecules in the gastro-intestinal tract were prepared by precipitation polymerization using sodium methacrylate (NaMA) and N,N'-methylene bis-acrylamide (MEBA) as pH-responsive monomer and cross-linker. Three materials with different casein amount were obtained and characterized by scanning electron microscopy, dimensional analysis, water uptake, cytotoxicity and enzymatic degradation experiments. Nanospheres biodegradability was tuned by coating with polyacrylic acid. Coated and uncoated materials were investigated as delivery vehicles for diclofenac sodium salt. For un-coated samples, the release raise 100% in 30 h, while for coated specimens these values were lower than 70%, due to the diffusional constraints of polymer layer.
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Affiliation(s)
- Umile Gianfranco Spizzirri
- a Dipartimento di Farmacia e Scienze della Salute e della Nutrizione , Università della Calabria, Edificio Polifunzionale , Arcavacata di Rende , Italia
| | - Giuseppe Cirillo
- a Dipartimento di Farmacia e Scienze della Salute e della Nutrizione , Università della Calabria, Edificio Polifunzionale , Arcavacata di Rende , Italia
| | - Manuela Curcio
- a Dipartimento di Farmacia e Scienze della Salute e della Nutrizione , Università della Calabria, Edificio Polifunzionale , Arcavacata di Rende , Italia
| | - Tania Spataro
- a Dipartimento di Farmacia e Scienze della Salute e della Nutrizione , Università della Calabria, Edificio Polifunzionale , Arcavacata di Rende , Italia
| | - Nevio Picci
- a Dipartimento di Farmacia e Scienze della Salute e della Nutrizione , Università della Calabria, Edificio Polifunzionale , Arcavacata di Rende , Italia
| | - Francesca Iemma
- a Dipartimento di Farmacia e Scienze della Salute e della Nutrizione , Università della Calabria, Edificio Polifunzionale , Arcavacata di Rende , Italia
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91
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Shojaee S, Emami P, Mahmood A, Rowaiye Y, Dukulay A, Kaialy W, Cumming I, Nokhodchi A. An Investigation on the Effect of Polyethylene Oxide Concentration and Particle Size in Modulating Theophylline Release from Tablet Matrices. AAPS PharmSciTech 2015. [PMID: 25771738 DOI: 10.1208/s12249-015-0295-z.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Polyethylene oxide has been researched extensively as an alternative polymer to hydroxypropyl methylcellulose (HPMC) in controlled drug delivery due to its desirable swelling properties and its availability in a number of different viscosity grades. Previous studies on HPMC have pointed out the importance of particle size on drug release, but as of yet, no studies have investigated the effect of particle size of polyethylene oxide (polyox) on drug release. The present study explored the relationship between polymer level and particle size to sustain the drug release. Tablets produced contained theophylline as their active ingredient and consisted of different polyethylene oxide particle size fractions (20-45, 45-90, 90-180 and 180-425 μm). It was shown that matrices containing smaller particle sizes of polyox produced harder tablets than when larger polyox particles were used. The release studies showed that matrices consisting of large polyox particles showed a faster release rate than matrices made from smaller particles. Molecular weight (MW) of the polymer was a key determining step in attaining sustained release, with the high MW of polyox resulting in a delayed release profile. The results showed that the effect of particle size on drug release was more detrimental when a low concentration of polyox was used. This indicates that care must be taken when low levels of polyox with different particle size fractions are used. More robust formulations could be obtained when the concentration of polyox is high. Differential scanning calorimetry (DSC) traces showed that particle size had no major effect on the thermal behaviour of polyox particles.
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Affiliation(s)
- Saeed Shojaee
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Parastou Emami
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Ahmad Mahmood
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Yemisi Rowaiye
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Alusine Dukulay
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Waseem Kaialy
- School of Pharmacy, Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton, WV1 1LY, UK
| | - Iain Cumming
- Medway School of Pharmacy, Universities of Kent and Greenwich, Chatham, ME4 4 TB, UK
| | - Ali Nokhodchi
- School of Life Sciences, University of Sussex, Falmer, Brighton, BN1 9QG, UK. .,Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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92
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Punčochová K, Ewing AV, Gajdošová M, Sarvašová N, Kazarian SG, Beránek J, Štěpánek F. Identifying the mechanisms of drug release from amorphous solid dispersions using MRI and ATR-FTIR spectroscopic imaging. Int J Pharm 2015; 483:256-67. [PMID: 25686660 DOI: 10.1016/j.ijpharm.2015.02.035] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 02/10/2015] [Accepted: 02/12/2015] [Indexed: 10/24/2022]
Abstract
The dissolution mechanism of a poorly aqueous soluble drug from amorphous solid dispersions was investigated using a combination of two imaging methods: attenuated total reflection-Fourier transform infrared (ATR-FTIR) spectroscopic imaging and magnetic resonance imaging (MRI). The rates of elementary processes such as water penetration, polymer swelling, growth and erosion of gel layer, and the diffusion, release and in some cases precipitation of drug were evaluated by image analysis. The results from the imaging methods were compared with drug release profiles obtained by classical dissolution tests. The study was conducted using three polymeric excipients (soluplus, polyvinylpyrrolidone - PVP K30, hydroxypropylmethyl cellulose - HPMC 100M) alone and in combination with a poorly soluble drug, aprepitant. The imaging methods were complementary: ATR-FTIR imaging enabled a qualitative observation of all three components during the dissolution experiments, water, polymer and drug, including identifying structural changes from the amorphous form of drug to the crystalline form. The comparison of quantitative MRI data with drug release profiles enabled the different processes during dissolution to be established and the rate-limiting step to be identified, which - for the drug-polymer combinations investigated in this work - was the drug diffusion through the gel layer rather than water penetration into the tablet.
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Affiliation(s)
- Kateřina Punčochová
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic; Zentiva, k.s., U Kabelovny 130, Prague 10, Czech Republic
| | - Andrew V Ewing
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom
| | - Michaela Gajdošová
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic
| | - Nina Sarvašová
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic
| | - Sergei G Kazarian
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, United Kingdom.
| | - Josef Beránek
- Zentiva, k.s., U Kabelovny 130, Prague 10, Czech Republic
| | - František Štěpánek
- Department of Chemical Engineering, University of Chemistry and Technology Prague, Technická 3, 166 28 Prague 6, Czech Republic.
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93
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Relationships between surface free energy, surface texture parameters and controlled drug release in hydrophilic matrices. Int J Pharm 2015; 478:328-340. [DOI: 10.1016/j.ijpharm.2014.11.054] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Revised: 11/23/2014] [Accepted: 11/25/2014] [Indexed: 11/21/2022]
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94
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Risk based approach for design and optimization of site specific delivery of isoniazid. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2014. [DOI: 10.1007/s40005-014-0170-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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95
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Quality by Design approach to understand the physicochemical phenomena involved in controlled release of captopril SR matrix tablets. Int J Pharm 2014; 477:431-41. [DOI: 10.1016/j.ijpharm.2014.10.050] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Revised: 10/18/2014] [Accepted: 10/21/2014] [Indexed: 11/21/2022]
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96
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97
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Li L, Wang L, Li J, Jiang S, Wang Y, Zhang X, Ding J, Yu T, Mao S. Insights into the mechanisms of chitosan–anionic polymers-based matrix tablets for extended drug release. Int J Pharm 2014; 476:253-65. [DOI: 10.1016/j.ijpharm.2014.09.057] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 09/26/2014] [Accepted: 09/30/2014] [Indexed: 10/24/2022]
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98
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Shojaee S, Nokhodchi A, Cumming I. The role of fillers and sodium metabisulfite on drug release from aged polyox tablets. Drug Dev Ind Pharm 2014; 40:1451-8. [DOI: 10.3109/03639045.2013.828224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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99
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Park JB, Park YJ, Kang CY, Lee BJ. Modulation of microenvironmental pH and utilization of alkalizers in crystalline solid dispersion for enhanced solubility and stability of clarithromicin. Arch Pharm Res 2014; 38:839-48. [DOI: 10.1007/s12272-014-0471-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 08/19/2014] [Indexed: 11/24/2022]
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100
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