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In Vivo Evaluation of Thiamine Hydrochloride with Gastro-Retentive Drug Delivery in Healthy Human Volunteers Using Gamma Scintigraphy. Pharmaceutics 2023; 15:pharmaceutics15020691. [PMID: 36840013 PMCID: PMC9960539 DOI: 10.3390/pharmaceutics15020691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/13/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023] Open
Abstract
A floating tablet system containing thiamine hydrochloride, a model drug with a narrow absorption window, was evaluated. The tablet was found to have a floating lag time of less than 30 s with a sustained drug release over 12 h during in vitro dissolution studies. The gastro-retentive property of the tablet in relation to the bioavailability of thiamine was determined in healthy human volunteers using gamma scintigraphy under fasted and fed conditions. The gastro-retentive time of the floating tablet could be prolonged up to 10 h under the fed state, compared to about 1.8 h in the fasted state. The prolonged gastric retention under the fed state resulted in a 2.8-fold increase in oral bioavailability of thiamine compared to that of the fasted state. There was also a 1.4-fold increase in thiamine absorption compared to that of a conventional immediate release tablet in the fed state. In the fasted state, the extent of thiamine absorption from the floating tablet was only about 70% of that absorbed from the immediate release tablet. Thus, to achieve a better performance, such floating tablet systems should be administered under a fed condition, to prolong the gastric retention time.
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Pawar MA, Shevalkar GB, Vavia PR. Design and Development of Gastro-retentive Drug Delivery System for Trazodone Hydrochloride: a Promising Alternative to Innovator's Controlled-Release Tablet. AAPS PharmSciTech 2022; 23:251. [PMID: 36071254 DOI: 10.1208/s12249-022-02404-8] [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: 04/26/2022] [Accepted: 08/22/2022] [Indexed: 11/30/2022] Open
Abstract
Trazodone hydrochloride (TZN) is a serotonin reuptake inhibitor that treats a major depressive disorder. It exhibits a short plasma half-life of 4.1 h and shows pH-dependent solubility. Above its pKa (6.74), solubility of TZN is very low, affecting its dissolution in the lower part of GIT. Hence, the present work aimed to develop gastro-retentive floating tablet of TZN. Central composite design was employed to optimize the formulation. Formulation variables like the concentration of HPMC-K100M, Polyox WSR 303 Leo, and sodium bicarbonate were evaluated for the responses like floating lag time and drug release. X-ray imaging study was performed on rabbits to determine the in vivo gastric retention of the optimized formulation. The accelerated stability study was conducted on optimized tablets as per ICH guidelines. Floating lag time and f2 value of the optimized formulation were found to be 2.51±0.02 min and 62.79, respectively. X-ray imaging studies in rabbits determined the in vivo gastro retention time. After 12 h of administration, tablet remained in the gastric region, indicating better retentive power. Accelerated stability studies showed sufficient formulation stability even after 3 months of storage. All these studies depict that the floating gastro-retentive system could be used as an alternative to the innovator formulation.
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Affiliation(s)
- Manoj A Pawar
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, University under Section 3 of UGC Act - 1956, Elite Status and Center of Excellence - Govt. of Maharashtra, Matunga (E), Mumbai, 400019, India
| | - Ganesh B Shevalkar
- Department of Pharmaceutics, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, 425405, India
| | - Pradeep R Vavia
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, University under Section 3 of UGC Act - 1956, Elite Status and Center of Excellence - Govt. of Maharashtra, Matunga (E), Mumbai, 400019, India.
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Wen Y, Zhu W, Zhang X, Sun SK. Fabrication of gelatin Bi 2S 3 capsules as a highly sensitive X-ray contrast agent for gastrointestinal motility assessment in vivo. RSC Adv 2022; 12:13645-13652. [PMID: 35530383 PMCID: PMC9069310 DOI: 10.1039/d2ra00993e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
Tiny BaSO4 rod-based X-ray imaging is the most frequently-used method for clinical diagnosis of gastrointestinal motility disorders. The BaSO4 rods usually have a small size to pass through the gastrointestinal tract smoothly, but suffer from unavoidably low sensitivity. Herein, we developed Bi2S3 capsules as a high-performance X-ray contrast agent for gastrointestinal motility assessment for the first time. The Bi2S3 capsules were synthesized by the encapsulation of commercial Bi2S3 powder into commercial gelatin capsules and subsequent coating of ultraviolet-curable resin. The prepared Bi2S3 capsules showed excellent biocompatibility in vitro and in vivo and superior X-ray attenuation ability due to the large atomic number and high K-edge value of Bi. The developed Bi2S3 capsules can serve as a small but highly sensitive X-ray contrast agent to quantitatively assess gastrointestinal motility in a vincristine-induced gastrointestinal motility disorder model in vivo by X-ray, CT and spectral CT imaging successfully, solving the intrinsic drawbacks of clinically used BaSO4.
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Affiliation(s)
- Ya Wen
- Department of Medical Imaging, Tianjin Medical University Tianjin 300203 China
| | - Wang Zhu
- Department of Radiographic Center, Wuhan Children's Hospital, Tongji Medical College of Huazhong University of Science and Technology Wuhan 430015 China
| | - Xuejun Zhang
- Department of Medical Imaging, Tianjin Medical University Tianjin 300203 China
| | - Shao-Kai Sun
- Department of Medical Imaging, Tianjin Medical University Tianjin 300203 China
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Salve V, Mishra R, Nandgude T. Development and Optimization of a Floating Multiparticulate Drug Delivery System for Norfloxacin. Turk J Pharm Sci 2020; 16:326-334. [PMID: 32454731 DOI: 10.4274/tjps.galenos.2018.99266] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/11/2018] [Indexed: 12/01/2022]
Abstract
Objectives Norfloxacin is a synthetic broad-spectrum antibacterial drug having poor bioavailability and pH-dependent solubility. The purpose of the present study was to develop a gastroretentive floating multiparticulate drug delivery system for norfloxacin. Materials and Methods Norfloxacin core pellets were prepared using microcrystalline cellulose (MCC) and polyvinylpyrrolidone K30 (PVP K30) by extrusion and spheronization. A 3-level, 3-factor, 17-run experimental Box-Behnken design was adopted to optimize levels of variables in the pellets' formulations. The selected independent variables were amounts of MCC and PVP K30 and spheronizing speed and the dependent variables were aspect ratio and hardness of pellets. Sodium bicarbonate and hydroxypropyl methylcellulose K15M in the ratios of 1:1, 1:2, and 2:1 (w/w) on a dry solid basis were incorporated into the norfloxacin pellets and they were further coated with Eudragit RL 100 using a fluidized bed processor to obtain weight gain of 5%, 10%, and 15% w/w. The fourier transform infrared spectrum, scanning electron microscopy, physical characterization, particle size distribution analysis, floating studies, and in vitro drug release studies of the pellets were evaluated. Results Among the floating multiparticulate pellets batches, batch B-22 was found to be optimized based on the criteria of attaining the minimum floating lag time (<10 min) and the maximum value of drug released 82.11% in 8 h. The percentage drug release for batches B-21 and B-23 was 91.12% in 5 h and 60.67% in 8 h, respectively. The drug release studies indicated that as the Eudragit RL 100 polymer coat increases the drug release decreases, producing sustained release of norfloxacin. The floating studies revealed that 70%-90% of pellets remained floating for up to 8 h. All the batches have excellent flow properties with angle of repose in the range of 25.5±0.49° to 28.02±0.30°, and Carr's index and Hausner's ratio in the range of 5% to 15% and 1.05±0.3 to 1.14±0.3, respectively. Conclusion The significant outcome obtained in the study is that such an approach can be effectively employed for improvement of the bioavailability of drugs having poor absorption in the lower part of the gastrointestinal tract with enhanced therapeutic efficacy.
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Affiliation(s)
- Vaibhav Salve
- Dr. D.Y. Patil Institute of Pharmaceutical Science and Research, Department of Pharmaceutics, Maharashtra, India
| | - Rakesh Mishra
- Dr. D.Y. Patil Institute of Pharmaceutical Science and Research, Department of Pharmaceutics, Maharashtra, India
| | - Tanaji Nandgude
- Dr. D.Y. Patil Institute of Pharmaceutical Science and Research, Department of Pharmaceutics, Maharashtra, India
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Bueno MS, Chierentin L, Bongioanni A, Nunes Salgado HR, Longhi MR, Garnero C. β-cyclodextrin complexation as an approach to enhance the biopharmaceutical properties of Norfloxacin B Hydrate. Carbohydr Res 2019; 485:107818. [PMID: 31542588 DOI: 10.1016/j.carres.2019.107818] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/12/2019] [Accepted: 09/12/2019] [Indexed: 10/26/2022]
Abstract
Binary systems of Norfloxacin B Hydrate with β-CD were explored by reliable biopharmaceutical studies as potential candidates for the preparation of drug delivery systems. Initially, studies of antimicrobial activity and solubility of the different polymorphic forms of Norfloxacin provided evidence to select Norfloxacin B Hydrate as the optimal solid form of Norfloxacin. Solid binary systems were preparing by kneading, freeze-drying, and physical mixture methods. The influence on the solubility, dissolution rate and chemical stability of Norfloxacin B Hydrate was investigated. These studies showed an increment of solubility and dissolution rate in physiological simulated fluids. However, the solid systems were moderated hygroscopically under accelerated storage conditions, which produces a destabilizing effect that accelerated the chemical reactivity of the drug in such conditions. Therefore, special cares must be considered in the manufacturing process and the packaging selection. Moreover, the experimental results proved that freeze-drying was not an appropriate method for the preparation. In conclusion, the Norfloxacin oral bioavailability can be improved with this binary systems, that could be applied in the production of an alternative pharmaceutical formulation of the drug.
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Affiliation(s)
- Maria Soledad Bueno
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA) CONICET and Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
| | - Lucas Chierentin
- Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista, Rodovia Araraquara-Jaú, Km 1, CEP: 14801-902, Araraquara, São Paulo, Brazil.
| | - Agustina Bongioanni
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA) CONICET and Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
| | - Hérida Regina Nunes Salgado
- Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista, Rodovia Araraquara-Jaú, Km 1, CEP: 14801-902, Araraquara, São Paulo, Brazil.
| | - Marcela Raquel Longhi
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA) CONICET and Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
| | - Claudia Garnero
- Unidad de Investigación y Desarrollo en Tecnología Farmacéutica (UNITEFA) CONICET and Departamento de Ciencias Farmacéuticas, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
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Kamble R, Sharma S, Mehta P. Norfloxacin mixed solvency based solid dispersions: An in-vitro and in-vivo investigation. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1016/j.jtusci.2016.11.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ravindra Kamble
- Department of Pharmaceutics, Bharati Vidyapeeth University, Poona College of Pharmacy, Pune, Maharashtra, India
| | - Sumeet Sharma
- Department of Pharmaceutics, Bharati Vidyapeeth University, Poona College of Pharmacy, Pune, Maharashtra, India
| | - Piyush Mehta
- Department of Quality Assurance, Bharati Vidyapeeth University Poona College of Pharmacy, Pune, Maharashtra, India
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Design, optimization and pharmacokinetics of novel prolonged gastroretentive drug delivery system of quetiapine fumarate. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2016. [DOI: 10.1007/s40005-016-0237-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Razavi M, Karimian H, Yeong CH, Chung LY, Nyamathulla S, Noordin MI. Gamma scintigraphic evaluation of floating gastroretentive tablets of metformin HCl using a combination of three natural polymers in rabbits. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:4373-86. [PMID: 26273196 PMCID: PMC4532171 DOI: 10.2147/dddt.s86263] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present research was aimed at formulating a metformin HCl sustained-release formulation from a combination of polymers, using the wet granulation technique. A total of 16 formulations (F1–F16) were produced using different combinations of the gel-forming polymers: tamarind kernel powder, salep (palmate tubers of Orchis morio), and xanthan. Post-compression studies showed that there were no interactions between the active drug and the polymers. Results of in vitro drug-release studies indicated that the F10 formulation which contained 5 mg of tamarind kernel powder, 33.33 mg of xanthan, and 61.67 mg of salep could sustain a 95% release in 12 hours. The results also showed that F2 had a 55% similarity factor with the commercial formulation (C-ER), and the release kinetics were explained with zero order and Higuchi models. The in vivo study was performed in New Zealand White rabbits by gamma scintigraphy; the F10 formulation was radiolabeled using samarium (III) oxide (153Sm2O3) to trace transit of the tablets in the gastrointestinal tract. The in vivo data supported the retention of F10 formulation in the gastric region for 12 hours. In conclusion, the use of a combination of polymers in this study helped to develop an optimal gastroretentive drug-delivery system with improved bioavailability, swelling, and floating characteristics.
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Affiliation(s)
- Mahboubeh Razavi
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Hamed Karimian
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Chai Hong Yeong
- Department of Biomedical Imaging and University Malaya Research Imaging Centre, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Lip Yong Chung
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Shaik Nyamathulla
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohamed Ibrahim Noordin
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia ; Center for Natural Products and Drug Discovery (CENAR), Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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Chierentin L, Garnero C, Chattah AK, Delvadia P, Karnes T, Longhi MR, Salgado HRN. Influence of β-cyclodextrin on the Properties of Norfloxacin Form A. AAPS PharmSciTech 2015; 16:683-91. [PMID: 25511811 DOI: 10.1208/s12249-014-0259-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 12/01/2014] [Indexed: 11/30/2022] Open
Abstract
Cyclodextrins are able to form host-guest complexes with hydrophobic molecules to result in the formation of inclusion complexes. The complex formation between norfloxacin form A and β-cyclodextrin was studied by exploring its structure affinity relationship in an aqueous solution and in the solid state. Kneading, freeze-drying, and physical mixture methods were employed to prepare solid complexes of norfloxacin and β-cyclodextrin. The solubility of norfloxacin significantly increased upon complexation with β-cyclodextrin as demonstrated by a solubility isotherm of the AL type along with the results of an intrinsic dissolution study. The complexes were also characterized in the solid stated by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffractometry, scanning electron microscopy (SEM), and solid-state nuclear magnetic resonance (ssNMR) spectrometry. The thermal analysis showed that the thermal stability of the drug is enhanced in the presence of β-cyclodextrin. Finally, the microbiological studies showed that the complexes have better potency when compared with pure drug.
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Development and characterization of novel site specific hollow floating microspheres bearing 5-Fu for stomach targeting. ScientificWorldJournal 2014; 2014:705259. [PMID: 25383377 PMCID: PMC4212548 DOI: 10.1155/2014/705259] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 08/20/2014] [Accepted: 08/22/2014] [Indexed: 11/18/2022] Open
Abstract
Multiple-unit-type oral floating hollow microspheres of 5-fluorouracil (5-Fu) were developed using modified solvent evaporation technique to prolong gastric residence time, to target stomach cancer, and to increase drug bioavailability. The prepared microspheres were characterized for micromeritic properties, floating behavior, entrapment efficiency, and scanning electron microscopy (SEM). The in vitro drug release and floating behavior were studied in simulated gastric fluid (SGF) at pH 1.2. The yield of microspheres was obtained up to 84.46 ± 6.47%. Microspheres showed passable flow properties. Based on optical microscopy, particle size was found to be ranging from 158.65 ± 12.02 to 198.67 ± 17.45 μm. SEM confirmed spherical size, perforated smooth surface, and a hollow cavity inside the microspheres. Different kinetic models for drug release were also applied on selected batches.
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Razavi M, Nyamathulla S, Karimian H, Noordin MI. Novel swellable polymer of orchidaceae family for gastroretentive drug delivery of famotidine. DRUG DESIGN DEVELOPMENT AND THERAPY 2014; 8:1315-29. [PMID: 25246773 PMCID: PMC4166908 DOI: 10.2147/dddt.s68517] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
This study aimed to develop hydrophilic, gastroretentive matrix tablets of famotidine with good floating and swelling properties. A novel gastroretentive drug delivery formulation was designed using salep, also known as salepi, a flour obtained from grinding dried palmate tubers of Orchis morio var mascula (Orchidaceae family). The main polysaccharide content of salep is glucomannan, highly soluble in cold and hot water, which forms a viscous solution. Salep was characterized for physicochemical properties, thermal stability, chemical interaction, and surface morphology using X-ray diffraction analysis, differential scanning calorimetry, Fourier transform infrared spectroscopy, and scanning electron microscopy. Ten different formulations (S1–S10) were prepared using famotidine to salep ratios from 1:0.5 to 1:5. Results demonstrated that all formulations were able to sustain the drug release for more than 24 hours. The S5 formulation, with a famotidine to salep ratio of 1:2.5, had the shortest floating lag time of 35 seconds and 100% drug release within 24 hours. The dissolution data were fitted into popular mathematical models to assess the mechanism of drug release. S5 showed Zero order release (R=0.9746) with Higuchi diffusion (R=0.9428). We conclude that salep, a novel polymer, can be used in controlled release formulations to sustain release for 24 hours, due to inherent swelling and gelling properties.
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Affiliation(s)
- Mahboubeh Razavi
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Shaik Nyamathulla
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia ; Center for Natural Products and Drug Discovery, Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Hamed Karimian
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Mohamed Ibrahim Noordin
- Department of Pharmacy, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia ; Center for Natural Products and Drug Discovery, Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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Bhardwaj P, Singh R, Swarup A. Development and characterization of newer floating film bearing 5-fluorouracil as a model drug. J Drug Deliv Sci Technol 2014. [DOI: 10.1016/s1773-2247(14)50092-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Pawar VK, Asthana S, Mishra N, Chaurasia M, Chourasia MK. Chitosan coated hydroxypropyl methylcellulose-ethylcellulose shell based gastroretentive dual working system to improve the bioavailability of norfloxacin. RSC Adv 2013. [DOI: 10.1039/c3ra42726a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Pawar VK, Kansal S, Asthana S, Chourasia MK. Industrial perspective of gastroretentive drug delivery systems: Physicochemical, biopharmaceutical, technological and regulatory consideration. Expert Opin Drug Deliv 2012; 9:551-65. [DOI: 10.1517/17425247.2012.677431] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Bomma R, Veerabrahma K. Development of gastroretentive drug delivery system for cefuroxime axetil:In vitroandin vivoevaluation in human volunteers. Pharm Dev Technol 2012; 18:1230-7. [DOI: 10.3109/10837450.2012.660698] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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16
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Kapil R, Dhawan S, Singh B, Garg B, Singh B. Systematic formulation development of once-a-day gastroretentive controlled release tablets of rivastigmine using optimized polymer blends. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50090-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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17
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Nanjwade B, Adichwal S, Sutar K. Development and evaluation of glipizide floating tablet. J Drug Deliv Sci Technol 2012. [DOI: 10.1016/s1773-2247(12)50055-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Adibkia K, Hamedeyazdan S, Javadzadeh Y. Drug release kinetics and physicochemical characteristics of floating drug delivery systems. Expert Opin Drug Deliv 2011; 8:891-903. [DOI: 10.1517/17425247.2011.574124] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Development and optimization of metoprolol succinate gastroretentive drug delivery system. ACTA PHARMACEUTICA 2010; 60:415-25. [PMID: 21169134 DOI: 10.2478/v10007-010-0031-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Metoprolol succinate (MS) gastroretentive (GR) controlled release system was formulated to increase gastric residence time leading to improved drug bioavailability. Box-Behnken model was followed using novel combinations of sodium alginate (SA), sodium carboxymethylcellulose (NaCMC), magnesium alumino metasilicate (MAS) as independent variables. Floating lag time (Flag), t25, t50, t75, diffusion exponent as dependent variables revealed that the amount of SA, NaCMC and MAS have a significant effect (p < 0.05) on t25, t50, t75 and Flag. MSGR tablets were prepared and evaluated for mass, thickness, hardness, friability, drug content and floating property. Tablets were studied for dissolution for 24 h and exhibited controlled release of MS with floating for 16 h. The release profile of the optimized batch MS01 fitted first-order kinetics (R2 = 0.9868, n = 0.543), indicating non-Fickian diffusion or anomalous transport by diffusion and swelling.
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Singh B, Rani A, Babita, Ahuja N, Kapil R. Formulation optimization of hydrodynamically balanced oral controlled release bioadhesive tablets of tramadol hydrochloride. Sci Pharm 2010; 78:303-23. [PMID: 21179349 PMCID: PMC3002789 DOI: 10.3797/scipharm.1001-04] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 04/12/2010] [Indexed: 11/22/2022] Open
Abstract
The directly compressible floating-bioadhesive tablets of tramadol were formulated using varying amounts Carbopol 971P (CP) and hydroxy-propylmethyl cellulose (HPMC), along with other requisite excipients. In vitro drug release profile, floatational characteristics and ex vivo bioadhesive strength using texture analyzer were determined, and systematically optimized using a 32 central composite design (CCD). The studies indicated successful formulation of gastroretentive compressed matrices with excellent controlled release, mucoadhesion and hydrodynamic balance. Comparison of the dissolution profiles of the optimized formulation, with optimal composition of CP:HPMC :: 80.0:125.0, with that of the marketed controlled release formulation other indicated analogy of drug release performance with each other. Validation of optimization study using eight confirmatory experimental runs indicated very high degree of prognostic ability of CCD with mean ± SEM of −0.06% ± 0.37. Further, the study successfully unravels the effect of the polymers on the selected response variables.
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Affiliation(s)
- Bhupinder Singh
- University Institute of Pharmaceutical Sciences, UGC Center of Advanced Studies, Panjab University 160 014, Chandigarh, India.
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