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Rao MR, Deshpande S, Deshpande P. Dapsone-Loaded Mixed Micellar Gel for Treatment OF Acne Vulgaris. AAPS PharmSciTech 2023; 24:109. [PMID: 37100968 DOI: 10.1208/s12249-023-02564-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 04/04/2023] [Indexed: 04/28/2023] Open
Abstract
Mixed polymeric micelles are potential nanocarriers for topical drug delivery. Dapsone (DAP) is an antibacterial used as anti-acne agent, but challenged by low water solubility and poor skin permeability. In the present study, DAP-loaded mixed micellar gel was developed comprising Pluronics F-68 and F-127. Micelles were prepared by solvent evaporation method and particle size, ex vivo permeation, drug loading, and entrapment efficiency were determined. Central Composite Design was used to optimize formulation. Independent variables were concentration of Pluronics at three levels while micelle size and drug loading capacities were dependent variables. Droplet size ranged from 400 to 500 nm. Transmission electron microscopy revealed spherical morphology of micelles. Optimized micelles were incorporated into gel base using HPMC K100M, Sodium CMC, and Carbopol 980 as gelling agents. Gels were evaluated for pH, drug content, spreadability, rheology, syneresis, ex vivo permeation, and subacute dermal toxicity. Compared with solubility of free DAP (0.24+0.056 µg/ml), solubility in mixed micelles was 18.42±3.4 µg/ml in water at room temperature. Order of spreadability of gels was Na CMC < HPMC < Carbopol 980. Carbopol gels displayed thixotropy with index of 3.17. Syneresis for all gels from day 0 to day 30 was found to be in range of 4.2 to 15.6% w/w. Subacute dermal toxicity studies showed no signs of erythema and edema on rat skin until 21 days. These results suggest that mixed micelles can significantly increase solubility and permeability and sustain release of DAP and are suitable carriers for topical DAP delivery in anti-acne therapies.
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Affiliation(s)
- Monica Rp Rao
- Department of Pharmaceutics, AISSMS College of Pharmacy, Kennedy Road, Near R.T.O., Maharashtra, 411001, Pune, India.
| | - Sushant Deshpande
- Department of Pharmaceutical Quality Assurance, AISSMS College of Pharmacy, Kennedy Road, Near R.T.O., Pune, 411001, India
| | - Padmanabh Deshpande
- Department of Pharmaceutical Quality Assurance, AISSMS College of Pharmacy, Kennedy Road, Near R.T.O., Pune, 411001, India
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2
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Panda J, Rao MEB, Swain S, Patra CN, Jena BR. Formulation development, optimization and characterization of mucoadhesive minitablets of cefuroxime axetil: in vitro, ex vivo and in vivo pharmacokinetic evaluation. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2022. [DOI: 10.1186/s43088-022-00303-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The current study expands on the use of design of experiment in developing cefuroxime axetil mucoadhesive minitablets for treating antibiotic-associated colitis. A comprehensive QbD-based product development strategy was implemented, with the target product profile defined based on the desired product quality of mucoadhesive minitablets. The identified critical quality attributes are based on the target product profile. The goal was to find the optimum levels by using the concentrations of chitosan (mg) (X1), HPMC K100M (X2) and sodium carboxymethyl cellulose (X3) as the influential variables. The response surface methodology determines the dependent variables using 33 Box–Behnken design to optimize the selected critical factors. The friability (%), drug content (%) and mucoadhesive strength (%) characteristics of cefuroxime axetil mucoadhesive minitablets were evaluated using ANOVA for the observed responses or dependent variables.
Results
The study demonstrated that run 8 with optimum composition chitosan, HPMC K100M and sodium carboxy methyl cellulose, which are the mucoadhesive polymers, showed a desirable and promising drug release profile up to 24 h, higher percentage of drug content, mucoadhesion and swelling index.
Conclusions
The optimized mucoadhesive minitablets of cefuroxime axetil demonstrated desired formulation characteristics, including improved bioavailability and high control over the drug’s release rate and increased flexibility in adjusting both the dose and the drug’s release rate. In a nutshell, the studies support the successful development of mucoadhesive minitablets of cefuroxime axetil, which could be used to treat antibiotic-associated colitis.
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3
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Tidau M, Finke JH. Modified Release Kinetics in Dual Filament 3D Printed Individualized Oral Dosage Forms. Eur J Pharm Sci 2022; 175:106221. [PMID: 35662635 DOI: 10.1016/j.ejps.2022.106221] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Revised: 03/18/2022] [Accepted: 05/23/2022] [Indexed: 11/28/2022]
Abstract
On demand production of totally customizable combinative preparations is a central goal of a patient-centric pharmaceutical supply chain. Additive manufacturing techniques like fused deposition modeling (FDM) could be key technologies towards such individualized dosage forms. As so far only a limited number of studies on 3D printed combinative preparations applying FDM have been reported, a core-shell dosage form was the focus of the present study. Dosage forms with an initial and a sustained release part with theophylline as model API were successfully produced applying a dual nozzle FDM 3D printer. Investigations identified microstructural defects at the interface between the two formulations by means of µCT analysis. Dissolution testing proved the achievement of the intended release profile. In combination with additionally characterized release profile of single material prints of different shapes, the combinative release profiles could be predicted by developing model equations and taking into account the geometric composition. As these model approaches can accordingly facilitate the prediction of API release from 3D printed combinative preparations with only data from single material release. This is a first step towards a truly individualized and reliable patient-centric pharmaceutical supply via 3D printing.
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Affiliation(s)
- Marius Tidau
- TU Braunschweig, Institut für Partikeltechnik (iPAT); Volkmaroder Str. 5, 38104 Braunschweig, Germany; TU Braunschweig, Center of Pharmaceutical Engineering (PVZ), Franz-Liszt-Str. 35A, 38106 Braunschweig, Germany.
| | - Jan Henrik Finke
- TU Braunschweig, Institut für Partikeltechnik (iPAT); Volkmaroder Str. 5, 38104 Braunschweig, Germany; TU Braunschweig, Center of Pharmaceutical Engineering (PVZ), Franz-Liszt-Str. 35A, 38106 Braunschweig, Germany
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4
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Bhalodiya M, Chavda J, Mori D, Patel N, Manek R, Dudhat K. Formulation and evaluation of amorphous solid dispersion Boerhaavia diffusa methanolic root extract for improving dissolution properties. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102740] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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5
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Sriram A, Tangirala S, Atmakuri S, Hoque S, Modani S, Srivastava S, Mahajan S, Maji I, Kumar R, Khatri D, Madan J, Singh PK. Budding Multi-matrix Technology-a Retrospective Approach, Deep Insights, and Future Perspectives. AAPS PharmSciTech 2021; 22:264. [PMID: 34734325 DOI: 10.1208/s12249-021-02133-4] [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: 01/20/2021] [Accepted: 08/30/2021] [Indexed: 11/30/2022] Open
Abstract
The human race is consistently striving for achieving good health and eliminate disease-causing factors. For the last few decades, scientists have been endeavoring to invent and innovate technologies that can substitute the conventional dosage forms and enable targeted and prolonged drug release at a particular site. The novel multi-matrix technology is a type of matrix formulation where the formulation is embraced to have a matrix system with multiple number of matrices. The MMX technology embraces with a combination of outer hydrophilic layer and amphiphilic/lipophilic core layer, within which drug is encapsulated followed by enteric coating for extended/targeted release at the required site. In comparison to conventional oral drug delivery systems and other drug delivery systems, multi-matrix (MMX) technology formulations afford many advantages. Additionally, it attributes for targeting strategy aimed at the colon and offers modified prolonged drug release. Thus, it has emerged rapidly as a potential alternative option in targeted oral drug delivery. However, the development of this MMX technology formulations is a exigent task and also has its own set of limitations. Due to its promising advantages and colon targeting strategy over the other colon targeted drug delivery systems, premier global companies are exploiting its potential. This article review deep insights into the formulation procedures, drug delivery mechanism, advantages, limitations, safety and efficacy studies of various marketed drug formulations of MMX technology including regulatory perspectives and future perspectives.
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Neumann M, Heimhardt C, Seidlitz K, Koziolek M, Schneider F, Schiller C, Hanke U, Anschütz M, Knopke C, Donath F, Thoma R, Brätter C, Schug B, Franke H, Weitschies W. Development of a furosemide-containing expandable system for gastric retention. J Control Release 2021; 338:105-118. [PMID: 34416321 DOI: 10.1016/j.jconrel.2021.08.026] [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: 05/19/2021] [Revised: 07/28/2021] [Accepted: 08/16/2021] [Indexed: 10/20/2022]
Abstract
More than 50 years ago, the first gastroretentive dosage forms came up. Since then, no practical and at the same time reliable gastroretentive system is available on market. A major obstacle in the development of novel gastroretentive systems is the lack of proper predictive test methods. In the present work, we aimed at developing and fully characterizing an expandable gastroretentive system containing furosemide as model drug. On the one hand, we used well-established in vitro tests for drug dissolution and gastroretentive properties (paddle apparatus, swelling characteristics). On the other hand, we used two novel models (dissolution stress test device, mechanical antrum model) to assess these properties under biorelevant conditions. Moreover, we performed an in vivo study under fed and fasted conditions that combined blood sampling and a high-resolution imaging technique (magnetic marker monitoring) to determine gastrointestinal location with the assessment of a pharmacodynamic endpoint (urinary sodium excretion). In vitro dissolution tests confirmed prolonged drug release over more than 8 h independent from pH and with slight pressure sensitivity. Swelling studies indicated good swelling behavior within 4 h along with medium gastroretentive properties as determined with the mechanical antrum model. In vivo imaging showed prolonged gastric residence time after fed compared to fasted administration (481 min vs 38 min). Comparison of geometric means of AUCo-tlast of the model drug confirmed this observation with 10 times higher value after fed administration. Urinary excretion of sodium well reflected the increased sodium-reuptake inhibition due to higher furosemide exposure under fed conditions. However, the poor performance after fasted intake of the system is in line with data from several other gastroretentive formulations. The present study highlighted the value of novel test methods during the development of gastroretentive formulations. Yet, a system with reproducible gastroretentive properties especially under fasted conditions has to be designed.
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Affiliation(s)
- Marco Neumann
- Institute of Pharmacy, Department of Biopharmaceutics & Pharmaceutical Technology, Center of Drug Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Claudia Heimhardt
- Institute of Pharmacy, Department of Biopharmaceutics & Pharmaceutical Technology, Center of Drug Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Knut Seidlitz
- LTS Lohmann Therapie Systeme AG, LTS Lohmann Therapie-Systeme AG, Lohmannstr. 2, D-56626 Andernach, Germany
| | - Mirko Koziolek
- Institute of Pharmacy, Department of Biopharmaceutics & Pharmaceutical Technology, Center of Drug Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Felix Schneider
- Institute of Pharmacy, Department of Biopharmaceutics & Pharmaceutical Technology, Center of Drug Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Christiane Schiller
- LTS Lohmann Therapie Systeme AG, LTS Lohmann Therapie-Systeme AG, Lohmannstr. 2, D-56626 Andernach, Germany
| | - Ulrike Hanke
- LTS Lohmann Therapie Systeme AG, LTS Lohmann Therapie-Systeme AG, Lohmannstr. 2, D-56626 Andernach, Germany
| | | | | | - Frank Donath
- SocraTec R&D, Im Setzling 35, 61440 Oberursel, Germany
| | - Rudy Thoma
- Formula GmbH, Grenzallee 305b, 14167 Berlin, Germany
| | | | - Barbara Schug
- SocraTec R&D, Im Setzling 35, 61440 Oberursel, Germany
| | - Hanshermann Franke
- LTS Lohmann Therapie Systeme AG, LTS Lohmann Therapie-Systeme AG, Lohmannstr. 2, D-56626 Andernach, Germany
| | - Werner Weitschies
- Institute of Pharmacy, Department of Biopharmaceutics & Pharmaceutical Technology, Center of Drug Absorption and Transport, University of Greifswald, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany.
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7
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Cid AG, Ramírez-Rigo MV, Palena MC, Gonzo EE, Jimenez-Kairuz AF, Bermúdez JM. Dual Release Model to Evaluate Dissolution Profiles from Swellable Drug Polyelectrolyte Matrices. Curr Drug Deliv 2020; 17:511-522. [DOI: 10.2174/1567201817666200512093115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 11/25/2019] [Accepted: 03/31/2020] [Indexed: 11/22/2022]
Abstract
Background:
Mathematical modeling in modified drug release is an important tool that allows
predicting the release rate of drugs in their surrounding environment and elucidates the transport
mechanisms involved in the process.
Objective:
The aim of this work was to develop a mathematical model that allows evaluating the release
profile of drugs from polymeric carriers in which the swelling phenomenon is present.
Methods:
Swellable matrices based on ionic complexes of alginic acid or carboxymethylcellulose with
ciprofloxacin were prepared and the effect of adding the polymer sodium salt on the swelling process
and the drug release was evaluated. Experimental data from the ciprofloxacin release profiles were
mathematically adjusted, considering the mechanisms involved in each stage of the release process.
Results:
A proposed model, named “Dual Release” model, was able to properly fit the experimental
data of matrices presenting the swelling phenomenon, characterized by an inflection point in their release
profile. This entails applying the extended model of Korsmeyer-Peppas to estimate the percentage
of drug released from the first experimental point up to the inflection point and then a model called
Lumped until the final time, allowing to adequately represent the complete range of the drug release
profile. Different parameters of pharmaceutical relevance were calculated using the proposed model to
compare the profiles of the studied matrices.
Conclusion:
The “Dual Release” model proposed in this article can be used to predict the behavior of
complex systems in which different mechanisms are involved in the release process.
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Affiliation(s)
- Alicia Graciela Cid
- Instituto de Investigaciones para la Industria Quimica, Consejo Nacional de Investigaciones Científicas y Tecnicas - Universidad Nacional de Salta, Salta, Argentina
| | | | - María Celeste Palena
- Departamento de Ciencias Farmaceuticas, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - Elio Emilio Gonzo
- Instituto de Investigaciones para la Industria Quimica, Consejo Nacional de Investigaciones Científicas y Tecnicas - Universidad Nacional de Salta, Salta, Argentina
| | - Alvaro Federico Jimenez-Kairuz
- Departamento de Ciencias Farmaceuticas, Facultad de Ciencias Quimicas, Universidad Nacional de Cordoba, Cordoba, Argentina
| | - José María Bermúdez
- Instituto de Investigaciones para la Industria Quimica, Consejo Nacional de Investigaciones Científicas y Tecnicas - Universidad Nacional de Salta, Salta, Argentina
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8
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Danielak D, Milanowski B, Wentowski K, Nogowska M, Kątny M, Rogowski P, Konwicki Ł, Puk E, Pieczuro J, Bawiec M, Garbacz G, Lulek J. Physiologically Based Dissolution Testing in a Drug Development Process-a Case Study of a Successful Application in a Bioequivalence Study of Trazodone ER Formulations Under Fed Conditions. AAPS PharmSciTech 2020; 21:161. [PMID: 32488427 PMCID: PMC7266804 DOI: 10.1208/s12249-020-01662-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/13/2020] [Indexed: 01/24/2023] Open
Abstract
Development of generic extended-release (ER) formulations is challenging. Especially under fed conditions, the risk of failure in bioequivalence trials is high because of long gastric residence times and susceptibility to food effects. We describe the development of a generic trazodone ER formulation that was aided with a biorelevant dissolution evaluation. Trazodone hydrochloride 300-mg monolithic matrix tablets were dissolved both in USP and EMA compliant conditions and in the StressTest device that simulated both physicochemical and mechanical conditions of the gastrointestinal passage. The final formulation was tested against the originator, Trittico XR 300 mg, in a randomized cross-over bioequivalence trial with 44 healthy volunteers, in agreement with EMA guidelines. Initially developed formulations dissolved trazodone similarly to the originator under standard conditions (f2 factor above 50), but their dissolution kinetics differed significantly in the biorelevant tests. The formulation was optimized by the addition of low-viscosity hypromellose and mannitol. The final formulation was approved for the bioequivalence trial. Calculated Cmax were 1.92 ± 0.77 and 1.92 ± 0.63 [μg/mL], AUC0-t were 27.46 ± 8.39 and 29.96 ± 9.09 [μg∙h/mL], and AUC0-∞ were 28.22 ± 8.91 and 30.82 ± 9.41 [μg∙h/mL] for the originator and test formulations, respectively. The 90% confidence intervals of all primary pharmacokinetic parameters fell within the 80-125% range. In summary, biorelevant dissolution tests supported successful development of a generic trazodone ER formulation pharmaceutically equivalent with the originator under fed conditions. Employment of biorelevant dissolution tests may decrease the risk of failure in bioequivalence trials of ER formulations.
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Affiliation(s)
- Dorota Danielak
- Department of Physical Pharmacy and Pharmacokinetics, Faculty of Pharmacy, Poznan University of Medical Sciences, 6 Święcickiego st, 60-781, Poznań, Poland.
| | - Bartłomiej Milanowski
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 6 Grunwaldzka st, 60-780, Poznań, Poland
| | | | - Maria Nogowska
- Biofarm Sp. z o.o, 13 Wałbrzyska st, 60-198, Poznań, Poland
| | - Michał Kątny
- Biofarm Sp. z o.o, 13 Wałbrzyska st, 60-198, Poznań, Poland
| | - Piotr Rogowski
- Biofarm Sp. z o.o, 13 Wałbrzyska st, 60-198, Poznań, Poland
| | | | - Ewa Puk
- Biofarm Sp. z o.o, 13 Wałbrzyska st, 60-198, Poznań, Poland
| | | | - Marek Bawiec
- Institute of Computer Engineering, Control and Robotics, Wroclaw University of Technology, 27 Wybrzeże Wyspańskiego st, 50-370, Wrocław, Poland
| | - Grzegorz Garbacz
- Physiolution GmbH, Walther-Rathenau Strasse 49a, 17489, Greifswald, Germany
| | - Janina Lulek
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Poznan University of Medical Sciences, 6 Grunwaldzka st, 60-780, Poznań, Poland
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9
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Abouhussein D, El Nabarawi MA, Shalaby SH, El-Bary AA. Cetylpyridinium chloride chitosan blended mucoadhesive buccal films for treatment of pediatric oral diseases. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101676] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Mohamed MI, Al-Mahallawi AM, Awadalla SM. Development and optimization of osmotically controlled drug delivery system for poorly aqueous soluble diacerein to improve its bioavailability. Drug Dev Ind Pharm 2020; 46:814-825. [DOI: 10.1080/03639045.2020.1757696] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Magdy I. Mohamed
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Abdulaziz M. Al-Mahallawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October University for Modern Science and Arts (MSA), Giza, Egypt
| | - Sami M. Awadalla
- Department of Pharmaceutics, Faculty of Pharmacy, Khartoum University, Khartoum, Sudan
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11
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Simancas-Herbada R, Fernández-Carballido A, Aparicio-Blanco J, Slowing K, Rubio-Retama J, López-Cabarcos E, Torres-Suárez AI. Controlled Release of Highly Hydrophilic Drugs from Novel Poly(Magnesium Acrylate) Matrix Tablets. Pharmaceutics 2020; 12:E174. [PMID: 32093038 PMCID: PMC7076391 DOI: 10.3390/pharmaceutics12020174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 11/22/2022] Open
Abstract
The potential of a new poly(magnesium acrylate) hydrogel (PAMgA) as a pharmaceutical excipient for the elaboration of matrix tablets for the extended release of highly hydrophilic drugs was evaluated. The polymer was synthetized with two different crosslinking degrees that were characterized by FTIR and DSC. Their acute oral toxicity was determined in a mouse model, showing no toxicity at doses up to 10 g/kg. Matrix tablets were prepared using metformin hydrochloride as a model drug and the mechanisms involved in drug release (swelling and/or erosion) were investigated using biorrelevant media. This new hydrogel effectively controlled the release of small and highly hydrophilic molecules as metformin, when formulated in matrix tablets for oral administration. The rate of metformin release from PAMgA matrices was mainly controlled by its diffusion through the gel layer (Fickian diffusion). The swelling capacity and the erosion of the matrix tablets influenced the metformin release rate, that was slower at pH 6.8, where polymer swelling is more intensive, than in gastric medium, where matrix erosion is slightly more rapid. The crosslinking degree of the polymer significantly influenced its swelling capacity in acid pH, where swelling is moderate, but not in intestinal fluid, where swelling is more intense.
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Affiliation(s)
- Rebeca Simancas-Herbada
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (R.S.-H.); (A.F.-C.); (J.A.-B.)
| | - Ana Fernández-Carballido
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (R.S.-H.); (A.F.-C.); (J.A.-B.)
- Institute of Industrial Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Juan Aparicio-Blanco
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (R.S.-H.); (A.F.-C.); (J.A.-B.)
- Institute of Industrial Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
| | - Karla Slowing
- Department of Pharmacology, Pharmacognosy and Botany, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain;
| | - Jorge Rubio-Retama
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (J.R.-R.); (E.L.-C.)
| | - Enrique López-Cabarcos
- Department of Chemistry in Pharmaceutical Sciences, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (J.R.-R.); (E.L.-C.)
| | - Ana-Isabel Torres-Suárez
- Department of Pharmaceutics and Food Technology, Faculty of Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain; (R.S.-H.); (A.F.-C.); (J.A.-B.)
- Institute of Industrial Pharmacy, Complutense University of Madrid, 28040 Madrid, Spain
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12
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Fitaihi RA, Aleanizy FS, Elsamaligy S, Mahmoud HA, Bayomi MA. Role of chitosan on controlling the characteristics and antifungal activity of bioadhesive fluconazole vaginal tablets. Saudi Pharm J 2018; 26:151-161. [PMID: 30166911 PMCID: PMC6111229 DOI: 10.1016/j.jsps.2017.12.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 12/19/2017] [Indexed: 11/22/2022] Open
Abstract
Vaginal fluconazole (FLZ) prolonged release tablets containing chitosan in physical blends with other bioadhesive polymers were designed. Chitosan was mixed with hydroxypropyl methylcellulose (HPMC), guar gum or sodium carboxymethyl cellulose (NaCMC) at different ratios and directly compressed into tablets. In-vitro release profiles of FLZ were monitored at pH 4.8. Compressing chitosan with HPMC at different ratios slowed FLZ release, however, time for 80% drug release (T80) did not exceed 4.3 h for the slowest formulation (F11). Adding of chitosan to guar gum at 1:2 ratio (F3) showed delayed release with T80 17.4 h while, in presence of PVP at 1:2:1 ratio (F5), T80 was 8.8 h. A blend of chitosan and NaCMC at 1:2 ratio (F15) showed prolonged drug release with T80 11.16 h. Formulations F5 and F15 showed fair physical characteristics for the powder and tablets and were subjected to further studies. Fast swelling was observed for F15 that reached 1160.53 ± 13.02% in 4 h with 2 h bioadhesion time to mouse peritoneum membrane compared with 458.83 ± 7.09% swelling with bioadhesion time exceeding 24 h for F5. Extensive swelling of F15 could indicate possible dehydration effect on vaginal mucosa. Meanwhile, antifungal activity against C. albicans was significantly high for F5.
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Affiliation(s)
- Rawan A. Fitaihi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Fadilah S. Aleanizy
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
| | - Samar Elsamaligy
- Department of Pharmaceutics, Faculty of Pharmacy, Helwan University, Ain Helwan, Cairo, Egypt
| | - Hanaa A. Mahmoud
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
- Department of Pharmaceutics, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Mohsen A. Bayomi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia
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13
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Li W, Huo M, Sen Chaudhuri A, Yang C, Cao D, Wu Z, Qi X. Self-assembled polyelectrolyte complexes films as efficient compression coating layers for controlled-releasing tablets. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:67. [PMID: 28337667 DOI: 10.1007/s10856-017-5886-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 03/15/2017] [Indexed: 06/06/2023]
Abstract
Currently, polysaccharide-based hydrogels are widely studied macromolecular networks to modify drug dissolution from controlled-releasing matrix tablets. Among them, polyelectrolyte complexes (PEC) films consisted of chitosan (CS) and sodium alginate (SA) could be obtained via spontaneously assembling under physiological gastrointestinal environment. Here, we utilized these self-assembled PEC films as an efficient coating materials to develop controlled-released matrix tablets through compression coating process, with paracetamol (APAP) as model drug. The constitutive and morphology characteristic studies on these PEC films illustrated that the mixture of CS and SA with the weight ratio of 1:1 would be an promising outer layer for compression-coating tablets. In addition, the in vitro drug releasing behavior experiments demonstrated that the optimized compression coating tablets displayed satisfied zero-order drug releasing profits. Furthermore, the in vivo pharmacokinetic studies of these APAP loaded compression-coated tablets in New Zealand rabbits gave that the Tmax (12.32 ± 1.05 h) was significantly prolonged (p < 0.01), compared to that (0.89 ± 0.26 h) of common APAP tablets (Jinfuning®) after oral administration. These studies suggest that the compression-coated tablets with self-assembled PEC film as coating outer layer may be a promising strategy for peroral controlled release delivery system of water soluble drugs.
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MESH Headings
- Acetaminophen/administration & dosage
- Acetaminophen/chemistry
- Acetaminophen/pharmacokinetics
- Administration, Oral
- Animals
- Calorimetry, Differential Scanning
- Chemistry, Pharmaceutical
- Delayed-Action Preparations/administration & dosage
- Delayed-Action Preparations/chemistry
- Delayed-Action Preparations/pharmacokinetics
- Hydrogels
- In Vitro Techniques
- Microscopy, Electron, Scanning
- Models, Biological
- Polyelectrolytes/chemistry
- Polysaccharides/chemistry
- Rabbits
- Spectroscopy, Fourier Transform Infrared
- Surface Properties
- Tablets, Enteric-Coated/administration & dosage
- Tablets, Enteric-Coated/chemistry
- Tablets, Enteric-Coated/pharmacokinetics
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Affiliation(s)
- Wenyan Li
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Mengmeng Huo
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Arka Sen Chaudhuri
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Chen Yang
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Dazhong Cao
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Zhenghong Wu
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
| | - Xiaole Qi
- Key Laboratory of Modern Chinese Medicines, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
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14
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Liu Y, Thompson M, O'Donnell K, Grasman N. Effect of temperature on the wetting behavior of hydroxypropyl methylcellulose in a twin-screw granulator. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.08.032] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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15
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Zhao S, Yu F, Liu N, Di Z, Yan K, Liu Y, Li Y, Zhang H, Yang Y, Yang Z, Li Z, Mei X. Synchronous delivery of felodipine and metoprolol tartrate using monolithic osmotic pump technology. Drug Dev Ind Pharm 2016; 42:1723-31. [PMID: 27074758 DOI: 10.3109/03639045.2016.1171332] [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: 11/13/2022]
Abstract
The synchronous sustained-release of two drugs was desired urgently for patients needing combination therapy in long term. However, sophisticated technologies were used generally to realize the simultaneous delivery of two drugs especially those with different physico-chemical properties. The purpose of this study was to obtain the concurrent release of felodipine and metoprolol tartrate, two drugs with completely different solubilities, in a simple monolithic osmotic pump system (FMOP). Two types of blocking agents were used in monolithic osmotic pump tablets and the synchronous sustained-release of FMOP was acquired in vitro. The tablets were also administered to beagle dogs and the plasma levels of FMOP were determined by HPLC-MS/MS. The pharmacokinetic parameters were calculated using a non-compartmental model. Cmax of both felodipine and metoprolol from the osmotic pump tablets were lower, tmax and mean residence time of both felodipine and metoprolol from the osmotic pump tablets were longer significantly than those from immediate release tablets. These results verified prolonged release of felodipine and metoprolol tartrate from osmotic pump formulations. The similar absorption rate between felodipine and metoprolol in beagles was also obtained by this osmotic pump formulation. Therefore, it could be supposed that the accordant release of two drugs with completely different solubilities may be realized just by using monolithic osmotic pump technology.
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Affiliation(s)
- Shiqing Zhao
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Fanglin Yu
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Nan Liu
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Zhong Di
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Kun Yan
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Yan Liu
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Ying Li
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Hui Zhang
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Yang Yang
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Zhenbo Yang
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Zhiping Li
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
| | - Xingguo Mei
- a Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
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16
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Du P, Jiang Q, Yang R, Liu C, Li Y, Wang L, Xue P, Fu Q, Zhang T. Nanonization of andrographolide by a wet milling method: the effects of vitamin E TPGS and oral bioavailability enhancement. RSC Adv 2016. [DOI: 10.1039/c6ra16002f] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Andrographolide (AND) has wide prospects in clinical use, but suffers from the restriction of poor oral bioavailability, due to its low solubility, rapid and extensive metabolism and efflux by P-glycoprotein (P-gp).
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Affiliation(s)
- Ping Du
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Qikun Jiang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Rujie Yang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Cuiru Liu
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Yingchao Li
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Liyuan Wang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Peng Xue
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Qiang Fu
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
| | - Tianhong Zhang
- Department of Pharmaceutical Analysis
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- PR China
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17
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Stamatopoulos K, Batchelor HK, Alberini F, Ramsay J, Simmons MJ. Understanding the impact of media viscosity on dissolution of a highly water soluble drug within a USP 2 mini vessel dissolution apparatus using an optical planar induced fluorescence (PLIF) method. Int J Pharm 2015; 495:362-373. [DOI: 10.1016/j.ijpharm.2015.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 09/04/2015] [Accepted: 09/05/2015] [Indexed: 10/23/2022]
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18
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Ikram M, Gilhotra N, Gilhotra RM. Formulation and optimization of mucoadhesive buccal patches of losartan potassium by using response surface methodology. Adv Biomed Res 2015; 4:239. [PMID: 26682205 PMCID: PMC4673708 DOI: 10.4103/2277-9175.168606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Accepted: 06/14/2015] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND This study was undertaken with an aim to systematically design a model of factors that would yield an optimized sustained release dosage form of an anti-hypertensive agent, losartan potassium, using response surface methodology (RSM) by employing 3(2) full factorial design. MATERIALS AND METHODS Mucoadhesive buccal patches were prepared using different grades of hydroxypropyl methylcellulose (HPMC) (K4M and K100M) and polyvinylpyrrolidone-K30 by solvent casting method. The amount of the release retardant polymers - HPMC K4M (X1) and HPMC K100M (X2) was taken as an independent variable. The dependent variables were the burst release in 30 min (Y1), cumulative percentage release of drug after 8 h (Y2) and swelling index (Y3) of the patches. In vitro release and swelling studies were carried out and the data were fitted to kinetic equations. RESULTS The physicochemical, bioadhesive, and swelling properties of patches were found to vary significantly depending on the viscosity of the polymers and their combination. Patches showed an initial burst release preceding a more gradual sustained release phase following a nonfickian diffusion process. DISCUSSION The results indicate that suitable bioadhesive buccal patches with desired permeability could be prepared, facilitated with the RSM.
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Affiliation(s)
- Md. Ikram
- School of Pharmacy, Suresh Gyan Vihar University, Jaipur, Rajasthan, India
| | - Neeraj Gilhotra
- Department of Pharmacy, Maharshi Dayanand University, Rohtak, Haryana, India
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19
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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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20
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Yassin S, Su K, Lin H, Gladden LF, Zeitler JA. Diffusion and swelling measurements in pharmaceutical powder compacts using terahertz pulsed imaging. J Pharm Sci 2015; 104:1658-67. [PMID: 25645509 PMCID: PMC4415463 DOI: 10.1002/jps.24376] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 12/16/2014] [Accepted: 01/07/2015] [Indexed: 11/16/2022]
Abstract
Tablet dissolution is strongly affected by swelling and solvent penetration into its matrix. A terahertz-pulsed imaging (TPI) technique, in reflection mode, is introduced as a new tool to measure one-dimensional swelling and solvent ingress in flat-faced pharmaceutical compacts exposed to dissolution medium from one face of the tablet. The technique was demonstrated on three tableting excipients: hydroxypropylmethyl cellulose (HPMC), Eudragit RSPO, and lactose. Upon contact with water, HPMC initially shrinks to up to 13% of its original thickness before undergoing expansion. HPMC and lactose were shown to expand to up to 20% and 47% of their original size in 24 h and 13 min, respectively, whereas Eudragit does not undergo dimensional change. The TPI technique was used to measure the ingress of water into HPMC tablets over a period of 24 h and it was observed that water penetrates into the tablet by anomalous diffusion. X-ray microtomography was used to measure tablet porosity alongside helium pycnometry and was linked to the results obtained by TPI. Our results highlight a new application area of TPI in the pharmaceutical sciences that could be of interest in the development and quality testing of advanced drug delivery systems as well as immediate release formulations. © 2015 Wiley Periodicals, Inc. and the American Pharmacists Association J Pharm Sci 104:1658–1667, 2015
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Affiliation(s)
- Samy Yassin
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
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21
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Zhang B, Zhang T, Wang Q, Ren T. Microorganism-based monodisperse microcapsules: encapsulation of the fungicide tebuconazole and its controlled release properties. RSC Adv 2015. [DOI: 10.1039/c5ra01629k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A controlled release system was prepared, it based on UF modified PCC cells in which TEB are loaded into cells. It can control the drug release rate, depress the initial “burst effect”, and was efficacious in controlling wheat powdery mildew.
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Affiliation(s)
- Bo Zhang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering/Key Laboratory of Green Pesticide and Agricultural Bioengineering
- Ministry of Education
- Guizhou University
- Guiyang
- P. R. China
| | - Teng Zhang
- The Key Laboratory of Resource Chemistry of Ministry of Education
- The Development Centre of Plant Germplasm Resources
- College of Life and Environmental Science
- Shanghai Normal University
- Shanghai
| | - Quanxi Wang
- The Key Laboratory of Resource Chemistry of Ministry of Education
- The Development Centre of Plant Germplasm Resources
- College of Life and Environmental Science
- Shanghai Normal University
- Shanghai
| | - Tianrui Ren
- The Key Laboratory of Resource Chemistry of Ministry of Education
- The Development Centre of Plant Germplasm Resources
- College of Life and Environmental Science
- Shanghai Normal University
- Shanghai
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22
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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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23
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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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24
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Ramburrun P, Kumar P, Choonara YE, Bijukumar D, du Toit LC, Pillay V. A review of bioactive release from nerve conduits as a neurotherapeutic strategy for neuronal growth in peripheral nerve injury. BIOMED RESEARCH INTERNATIONAL 2014; 2014:132350. [PMID: 25143934 PMCID: PMC4131113 DOI: 10.1155/2014/132350] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 05/04/2014] [Indexed: 02/07/2023]
Abstract
Peripheral nerve regeneration strategies employ the use of polymeric engineered nerve conduits encompassed with components of a delivery system. This allows for the controlled and sustained release of neurotrophic growth factors for the enhancement of the innate regenerative capacity of the injured nerves. This review article focuses on the delivery of neurotrophic factors (NTFs) and the importance of the parameters that control release kinetics in the delivery of optimal quantities of NTFs for improved therapeutic effect and prevention of dose dumping. Studies utilizing various controlled-release strategies, in attempt to obtain ideal release kinetics, have been reviewed in this paper. Release strategies discussed include affinity-based models, crosslinking techniques, and layer-by-layer technologies. Currently available synthetic hollow nerve conduits, an alternative to the nerve autografts, have proven to be successful in the bridging and regeneration of primarily the short transected nerve gaps in several patient cases. However, current research emphasizes on the development of more advanced nerve conduits able to simulate the effectiveness of the autograft which includes, in particular, the ability to deliver growth factors.
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Affiliation(s)
- Poornima Ramburrun
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Pradeep Kumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Yahya E. Choonara
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Divya Bijukumar
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Lisa C. du Toit
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
| | - Viness Pillay
- Wits Advanced Drug Delivery Platform Research Unit, Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa
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25
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Mouzam MI, Dehghan MHG. Characterization and In Vitro Evaluation of Freeze-Dried Nasal Insert Composed of Chlorpheniramine Maleate with Ionic and Nonionic Polymer for Intranasal Delivery. INT J POLYM MATER PO 2014. [DOI: 10.1080/00914037.2013.830257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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26
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Garbacz G, Kandzi A, Koziolek M, Mazgalski J, Weitschies W. Release characteristics of quetiapine fumarate extended release tablets under biorelevant stress test conditions. AAPS PharmSciTech 2014; 15:230-6. [PMID: 24297600 PMCID: PMC3909154 DOI: 10.1208/s12249-013-0050-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 10/22/2013] [Indexed: 12/31/2022] Open
Abstract
The aim of the present work was the investigation of robustness and reliability of drug release from 50 to 400 mg quetiapine extended release HPMC matrix tablets towards mechanical stresses of biorelevant intensity. The tests were performed under standard conditions (USP apparatus II) as well as under simulated gastrointestinal stress conditions. Mechanical stresses including pressure and agitation were applied by using the biorelevant dissolution stress test apparatus as it has been introduced recently. Test algorithms already established in previous studies were applied to simulate fasting gastrointestinal conditions. The dissolution experiments demonstrated striking differences in the product performance among standard and stress test conditions as well as dose strengths. In USP apparatus II, dissolution profiles were affected mainly by media pH. The dissolution experiments performed in biorelevant dissolution stress test device demonstrated that stress events of biorelevant intensity provoked accelerated drug release from the tablets.
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Affiliation(s)
- Grzegorz Garbacz
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Strasse 3, 17487, Greifswald, Germany,
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27
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Franek F, Holm P, Larsen F, Steffansen B. Interaction between fed gastric media (Ensure Plus®) and different hypromellose based caffeine controlled release tablets: comparison and mechanistic study of caffeine release in fed and fasted media versus water using the USP dissolution apparatus 3. Int J Pharm 2013; 461:419-26. [PMID: 24342711 DOI: 10.1016/j.ijpharm.2013.12.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 12/04/2013] [Accepted: 12/06/2013] [Indexed: 11/29/2022]
Abstract
The aim of the study was to investigate caffeine release in fed and fasted state media from three controlled release matrix tablets containing different HPMC viscosity grades. The biorelevant in vitro dissolution methods utilize the USP 3 dissolution apparatus and biorelevant media to simulate fed and fasted gastro-intestinal dissolution conditions. The effect of tablet reciprocation rate (dip speed) in dissolution media (10 and 15 dips per minute) and media (water, fed and fasted) on caffeine release rate from - and erosion rate of - 100, 4000 and 15,000 mPa s HPMC viscosity tablets was investigated using factorial designed experiments. Furthermore, the mechanism of release in Ensure Plus(®), a nutrition drink similar in composition to the FDA standard meal, was investigated by studying tablet swelling using texture analysis. Altering dip speed has negligible effect on release and erosion rates. Using fasted media instead of water slightly decreases caffeine release from 100 and 4000 mPa s HPMC viscosity tablets as well as erosion rates, while 15,000 mPa s tablets remain unaffected. Fed compared to fasted media decreases caffeine release rate, and the food effect is greater for the 100 mPa s viscosity tablets compared to the 4000 and 15,000 mPa s viscosity tablets. The investigation using texture analysis indicates that Ensure Plus(®) becomes rate-limiting for caffeine release from HPMC tablets by forming a hydrophobic barrier around the tablets. The barrier decreases tablet water permeation, which decreases erosion rate in 100 mPa s viscosity tablets, swelling in 15,000 mPa s viscosity tablets and caffeine release from both tablets. This observed interaction between Ensure Plus(®) and the HPMC tablets may translate into decreased drug release rate in the fed stomach, which may decrease the amount of drug available for absorption in the small intestine and thus reduce systemic drug exposure and maximum plasma concentration.
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Affiliation(s)
- Frans Franek
- Section for Pharmaceutical Design and Drug Delivery, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 København Ø, Denmark
| | - Per Holm
- Biologics and Pharmaceutical Science, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Frank Larsen
- Clinical Pharmacology, H. Lundbeck A/S, Ottiliavej 9, DK-2500 Valby, Denmark
| | - Bente Steffansen
- Section for Pharmaceutical Design and Drug Delivery, Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 København Ø, Denmark.
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28
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Machín R, Isasi JR, Vélaz I. Hydrogel matrices containing single and mixed natural cyclodextrins. Mechanisms of drug release. Eur Polym J 2013. [DOI: 10.1016/j.eurpolymj.2013.08.020] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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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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30
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Oliveira PR, Mendes C, Klein L, Sangoi MDS, Bernardi LS, Silva MAS. Formulation development and stability studies of norfloxacin extended-release matrix tablets. BIOMED RESEARCH INTERNATIONAL 2013; 2013:716736. [PMID: 24083235 PMCID: PMC3780477 DOI: 10.1155/2013/716736] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/25/2013] [Accepted: 07/31/2013] [Indexed: 11/18/2022]
Abstract
The aim of this research was to develop a new hydrophilic matrix system containing norfloxacin (NFX). Extended-release tablets are usually intended for once-a-day administration with benefits to the patient and lower discontinuation of the therapy. Formulations were developed with hydroxypropylmethylcellulose or poly(ethylene oxide) as hydrophilic polymers, with different molecular weights (MWs) and concentrations (20 and 30%). The tablets were found to be stable (6 months at 40 ± 2°C and 75 ± 5% relative humidity), and the film-coating process is recommended to avoid NFX photodegradation. The dissolution profiles demonstrated an extended-release of NFX for all developed formulations. Dissolution curves analyzed using the Korsmeyer exponential equation showed that drug release was controlled by both drug diffusion and polymer relaxation or erosion mechanisms. A more erosion controlled system was obtained for the formulations containing lower MW and amount of polymer. With the increase in both MW and amount of polymer in the formulation, the gel layer became stronger, and the dissolution was more drug-diffusion dependent. Formulations containing intermediate MW polymers or high concentration (30%) of low MW polymers demonstrated a combination of extended and complete in vitro drug release. This way, these formulations could provide an increased bioavailability in vivo.
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Affiliation(s)
- Paulo Renato Oliveira
- Post Graduation Program in Pharmaceutical Sciences, Universidade Estadual do Centro Oeste (UNICENTRO), 85040-080 Guarapuava, PR, Brazil
| | - Cassiana Mendes
- Post Graduation Program in Pharmacy, Health Science Centre, Federal University of Santa Catarina, Quality Control Laboratory, J/K 207, 88040-900 Florianópolis, SC, Brazil
| | - Lilian Klein
- Post Graduation Program in Pharmaceutical Sciences, Universidade Estadual do Centro Oeste (UNICENTRO), 85040-080 Guarapuava, PR, Brazil
| | - Maximiliano da Silva Sangoi
- Laboratory of Quality Control and Pharmaceutical Analysis, Faculty of Pharmacy, Federal University of Rio de Janeiro, 27930-560 Macaé, RJ, Brazil
| | - Larissa Sakis Bernardi
- Post Graduation Program in Pharmaceutical Sciences, Universidade Estadual do Centro Oeste (UNICENTRO), 85040-080 Guarapuava, PR, Brazil
| | - Marcos Antônio Segatto Silva
- Post Graduation Program in Pharmacy, Health Science Centre, Federal University of Santa Catarina, Quality Control Laboratory, J/K 207, 88040-900 Florianópolis, SC, Brazil
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Gallo L, Piña J, Bucalá V, Allemandi D, Ramírez-Rigo MV. Development of a modified-release hydrophilic matrix system of a plant extract based on co-spray-dried powders. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2013.03.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Utilization of environmental waste cyanobacteria as a pesticide carrier: Studies on controlled release and photostability of avermectin. Colloids Surf B Biointerfaces 2013; 102:341-7. [DOI: 10.1016/j.colsurfb.2012.07.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 06/26/2012] [Accepted: 07/04/2012] [Indexed: 11/18/2022]
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33
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Direct measurement of the time-dependent mechanical response of HPMC and PEO compacts during swelling. Int J Pharm 2012; 434:494-501. [DOI: 10.1016/j.ijpharm.2012.05.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 04/12/2012] [Accepted: 05/01/2012] [Indexed: 11/21/2022]
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34
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Savaşer A, Taş Ç, Bayrak Z, Özkan CK, Özkan Y. Effect of different polymers and their combinations on the release of metoclopramide HCl from sustained-release hydrophilic matrix tablets. Pharm Dev Technol 2012; 18:1122-30. [DOI: 10.3109/10837450.2012.710240] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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35
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Kim JY, Kim DW, Kuk YM, Park CW, Rhee YS, Oh TO, Weon KY, Park ES. Investigation of an active film coating to prepare new fixed-dose combination tablets for treatment of diabetes. Int J Pharm 2012; 427:201-8. [DOI: 10.1016/j.ijpharm.2012.01.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 01/06/2012] [Accepted: 01/29/2012] [Indexed: 11/26/2022]
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36
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Choi DH, Shin S, Viet Truong NK, Jeong SH. A new experimental design method to optimize formulations focusing on a lubricant for hydrophilic matrix tablets. Drug Dev Ind Pharm 2012; 38:1117-27. [DOI: 10.3109/03639045.2011.641563] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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37
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Jian H, Zhu L, Zhang W, Sun D, Jiang J. Galactomannan (from Gleditsia sinensis Lam.) and xanthan gum matrix tablets for controlled delivery of theophylline: In vitro drug release and swelling behavior. Carbohydr Polym 2012. [DOI: 10.1016/j.carbpol.2011.10.043] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Srikrishnan S, Randall A, Baldi P, Da Silva NA. Rationally selected single-site mutants of the Thermoascus aurantiacus endoglucanase increase hydrolytic activity on cellulosic substrates. Biotechnol Bioeng 2012; 109:1595-9. [PMID: 22180009 DOI: 10.1002/bit.24414] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 11/29/2011] [Accepted: 12/05/2011] [Indexed: 11/09/2022]
Abstract
Variants of the Thermoascus aurantiacus Eg1 enzyme with higher catalytic efficiency than wild-type were obtained via site-directed mutagenesis. Using a rational mutagenesis approach based on structural bioinformatics and evolutionary analysis, two positions (F16S and Y95F) were identified as priority sites for mutagenesis. The mutant and parent enzymes were expressed and secreted from Pichia pastoris and the single site mutants F16S and Y95F showed 1.7- and 4.0-fold increases in k(cat) and 1.5- and 2.5-fold improvements in hydrolytic activity on cellulosic substrates, respectively, while maintaining thermostability. Similar to the parent enzyme, the two variants were active between pH 4.0 and 8.0 and showed optimal activity at temperature 70°C at pH 5.0. The purified enzymes were active at 50°C for over 12 h and retained at least 80% of initial activity for 2 h at 70°C. In contrast to the improved hydrolysis seen with the single mutation enzymes, no improvement was observed with a third variant carrying a combination of both mutations, which instead showed a 60% reduction in catalytic efficiency. This work further demonstrates that non-catalytic amino acid residues can be engineered to enhance catalytic efficiency in pretreatment enzymes of interest.
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Affiliation(s)
- Sneha Srikrishnan
- Department of Chemical Engineering and Materials Science, The Henry Samueli School of Engineering, University of California, Irvine, California, USA
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39
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Moodley K, Pillay V, Choonara YE, du Toit LC, Ndesendo VMK, Kumar P, Cooppan S, Bawa P. Oral drug delivery systems comprising altered geometric configurations for controlled drug delivery. Int J Mol Sci 2011; 13:18-43. [PMID: 22312236 PMCID: PMC3269670 DOI: 10.3390/ijms13010018] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 12/06/2011] [Accepted: 12/06/2011] [Indexed: 11/16/2022] Open
Abstract
Recent pharmaceutical research has focused on controlled drug delivery having an advantage over conventional methods. Adequate controlled plasma drug levels, reduced side effects as well as improved patient compliance are some of the benefits that these systems may offer. Controlled delivery systems that can provide zero-order drug delivery have the potential for maximizing efficacy while minimizing dose frequency and toxicity. Thus, zero-order drug release is ideal in a large area of drug delivery which has therefore led to the development of various technologies with such drug release patterns. Systems such as multilayered tablets and other geometrically altered devices have been created to perform this function. One of the principles of multilayered tablets involves creating a constant surface area for release. Polymeric materials play an important role in the functioning of these systems. Technologies developed to date include among others: Geomatrix(®) multilayered tablets, which utilizes specific polymers that may act as barriers to control drug release; Procise(®), which has a core with an aperture that can be modified to achieve various types of drug release; core-in-cup tablets, where the core matrix is coated on one surface while the circumference forms a cup around it; donut-shaped devices, which possess a centrally-placed aperture hole and Dome Matrix(®) as well as "release modules assemblage", which can offer alternating drug release patterns. This review discusses the novel altered geometric system technologies that have been developed to provide controlled drug release, also focusing on polymers that have been employed in such developments.
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Affiliation(s)
- Kovanya Moodley
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Viness Pillay
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Yahya E. Choonara
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Lisa C. du Toit
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Valence M. K. Ndesendo
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Pradeep Kumar
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Shivaan Cooppan
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
| | - Priya Bawa
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown, Johannesburg 2193, South Africa; E-Mails: (K.M.); (Y.E.C.); (L.C.T.); (P.K.); (V.M.K.N.); (S.C.); (P.B.)
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40
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Sustained release of 5-fluorouracil by incorporation into sodium carboxymethylcellulose sub-micron fibers. Int J Pharm 2011; 419:240-6. [DOI: 10.1016/j.ijpharm.2011.07.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 07/06/2011] [Accepted: 07/07/2011] [Indexed: 11/19/2022]
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41
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Phaechamud T, Mueannoom W, Tuntarawongsa S, Chitrattha S. Preparation of Coated Valproic Acid and Sodium Valproate Sustained-release Matrix Tablets. Indian J Pharm Sci 2011; 72:173-83. [PMID: 20838520 PMCID: PMC2929775 DOI: 10.4103/0250-474x.65026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 11/18/2009] [Accepted: 02/04/2010] [Indexed: 11/30/2022] Open
Abstract
The aim of this research was to investigate the technique for preparation of coated valproic acid and sodium valproate sustained-release matrix tablets. Different diluents were tested and selected as the effective absorbent for oily valproic acid. Effect of the amount of absorbent and hydroxypropylmethylcellulose on drug release from valproic acid-sodium valproate matrix tablets prepared with wet granulation technique was evaluated in pH change system. Colloidal silicon dioxide effectively adsorbed liquid valproic acid during wet granulation and granule preparation. The amounts of colloidal silicon dioxide and hydroxypropylmethylcellulose employed in tablet formulations affected drug release from the tablets. The drug release was prominently sustained for over 12 h using hydroxypropylmethylcellulose-based hydrophilic matrix system. The mechanism of drug release through the matrix polymer was a diffusion control. The drug release profile of the developed matrix tablet was similar to Depakine Chrono®, providing the values of similarity factor (f2) and difference factor (f1) of 85.56 and 2.37, respectively. Eudragit® L 30 D-55 was used as effective subcoating material for core matrix tablets before over coating with hydroxypropylmethylcellulose film with organic base solvent. Drug release profile of coated matrix tablet was almost similar to that of Depakine Chrono®.
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Affiliation(s)
- T Phaechamud
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Silpakorn University, Nakhon, Pathom-73000, Thailand
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42
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Choi DH, Jung YJ, Wang HS, Yoon JH, Jeong SH. Evaluation of Physical Properties as Magnesium Stearate Blendedin Hydrophilic Matrix Tablets. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2011. [DOI: 10.4333/kps.2011.41.2.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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43
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Shin S, Choi DH, Truong NKV, Kim NA, Chu KR, Jeong SH. Time-oriented experimental design method to optimize hydrophilic matrix formulations with gelation kinetics and drug release profiles. Int J Pharm 2011; 407:53-62. [DOI: 10.1016/j.ijpharm.2011.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2010] [Revised: 01/06/2011] [Accepted: 01/11/2011] [Indexed: 11/25/2022]
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44
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Chaibva FA, Walker RB. The use of response surface methodology for the formulation and optimization of salbutamol sulfate hydrophilic matrix sustained release tablets. Pharm Dev Technol 2011; 17:594-606. [DOI: 10.3109/10837450.2011.557731] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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45
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Ndesendo VMK, Pillay V, Choonara YE, du Toit LC, Kumar P, Buchmann E, Meyer LC, Khan RA. Optimization of a polymer composite employing molecular mechanic simulations and artificial neural networks for a novel intravaginal bioadhesive drug delivery device. Pharm Dev Technol 2011; 17:407-20. [DOI: 10.3109/10837450.2010.546406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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46
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Scheubel E, Adamy L, Hoffart V, Cardot JM. Selection of the most suitable dissolution method for an extended release formulation based on IVIVC level A obtained on cynomolgus monkey. Drug Dev Ind Pharm 2011; 36:1320-9. [PMID: 20849348 DOI: 10.3109/03639041003801877] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE The purpose of this study is primarily to identify the most suitable in vitro dissolution method(s) for their ability to predict the in vivo performance of extended release prototype tablet formulations designed for a new chemical entity, Biopharmaceutic Classification System class II drug, weak base, based on the data collected in cynomolgus monkey. MATERIALS AND METHODS Different types of buffer at different pH were selected as dissolution medium resulting in a broad variety of release patterns (slow to fast). The in vivo and in vitro data were put in relation. RESULTS As a consequence of the discrimination between both tested formulations, the in vitro-in vivo correlation (IVIVC) qualities and shapes changed significantly. The obtained level A showed that the simple HCl medium was superior to biorelevant media and media containing surfactant when investigating IVIVCs in cynomolgus monkey. In addition, the results of dissolution in HCl suggested rather a diffusion mechanism of the extended release matrix formulation as the main factor of the release. CONCLUSION Adjusting dissolution testing conditions to match the behavior of the formulations in vitro with that in vivo by taking into account the properties of the drug and the formulation is a straightforward and useful approach in identifying a predictive method in the development of the IVIVC. These investigations will definitely help by derisking of new formulations as well as by rating changes in existing formulations with regard to their impact on bioavailability before entry into human.
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Affiliation(s)
- Emmanuel Scheubel
- Galenical and Analytical Development, F. Hoffman-La Roche Ltd., Pharmaceutical Division, Basel, Switzerland.
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47
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Design and In Vitro Evaluation of a Film-Controlled Dosage Form Self-Converted from Monolithic Tablet in Gastrointestinal Environment. J Pharm Sci 2010; 99:4678-90. [DOI: 10.1002/jps.22163] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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48
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Dumitriu RP, Mitchell GR, Vasile C. Multi-responsive hydrogels based on N-isopropylacrylamide and sodium alginate. POLYM INT 2010. [DOI: 10.1002/pi.2929] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Santos JV, Batista de Carvalho LAE, Pina MET. The influence of the compression force on zidovudine release from matrix tablets. AAPS PharmSciTech 2010; 11:1442-8. [PMID: 20842543 PMCID: PMC2974152 DOI: 10.1208/s12249-010-9497-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Accepted: 07/23/2010] [Indexed: 11/30/2022] Open
Abstract
The aim of the present work is the study of different zidovudine (AZT) formulations containing polymers (both cellulosic and acrylic), in order to evaluate the influence of the compression force on the antiviral release from the matrix tablets. The results evidenced that the formulations compressed at 500 and 1,000 MPa exhibit a higher hardness than those prepared at 100 MPa. The effect of the compression force on the drug release was analyzed and a statistically significant difference was observed (P < 0.05). Using lower compression forces leads to slightly better release profiles, i.e., profiles close to an ideal Higuchi kinetics for a total release of drug in a 12-h period, allowing to conclude that a compression force higher than 100 MPa is unnecessary.
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Affiliation(s)
- Jucimary V. Santos
- />Centro de Estudos Farmacêuticos (CEF), Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Luís A. E. Batista de Carvalho
- />Molecular Physical–Chemistry R&D Unit, Chemistry Department, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Maria Eugénia Tavares Pina
- />Centro de Estudos Farmacêuticos (CEF), Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
- />Molecular Physical–Chemistry R&D Unit, Chemistry Department, Faculty of Sciences and Technology, University of Coimbra, 3004-535 Coimbra, Portugal
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50
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Gajdziok J, Bajerová M, Chalupová Z, Rabišková M. Oxycellulose as mucoadhesive polymer in buccal tablets. Drug Dev Ind Pharm 2010; 36:1115-30. [DOI: 10.3109/03639041003690031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Jan Gajdziok
- Department of Pharmaceutics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Martina Bajerová
- Department of Pharmaceutics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Zuzana Chalupová
- Department of Pharmaceutics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
| | - Miloslava Rabišková
- Department of Pharmaceutics, Faculty of Pharmacy, University of Veterinary and Pharmaceutical Sciences, Brno, Czech Republic
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