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Liu H, Bao Y, Lai X, Feng Y, Yang D, Sun R, Firempong CK, He H. Construction and in vitro/ in vivo evaluation of menantine hydrochloride oral liquid sustained-release drug delivery system. Drug Dev Ind Pharm 2024; 50:363-375. [PMID: 38482839 DOI: 10.1080/03639045.2024.2329746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 02/09/2024] [Indexed: 03/24/2024]
Abstract
OBJECTIVE The purpose of the present study was to formulate a menantine hydrochloride (MH) sustained-release suspension. METHODS Menantine hydrochloride drug resin complex (MH-DRC) was prepared with strong acid cation exchange resin as carrier using water bath method. The MH-DRC was characterized using scanning electron microscopy, X-ray diffraction and infrared spectroscopy. The MH-coated microcapsule (MH-CM) with optimized formulation was further dispersed in a suitable medium to obtain a sustained-release suspension. The rats were given both the MH sustained-release suspension and the commercial MH sustained-release capsule by intragastric administration. The plasma concentration-time curves and related pharmacokinetic parameters were also investigated using a non-atrioventricular model. RESULTS MH and ion-exchange resin were ionically bonded. AmberliteIRP®69 had a higher affinity for MH at the initial concentration of 5 mg·mL-1 and a reaction temperature of 25.0 ± 0.5 °C. In vitro drug release profile showed that both the drug resin complex and the coated microcapsules had a certain level of sustained-release effect. The t1/2 of MH sustained-release suspension was extended from 68.44 h to 72.79 h with the peak blood concentration being decreased to 3.56 μg·mL-1 and the Tmax extended to 12 h compared with the commercial MH sustained-release capsule. The concentration-time curve of the self-made MH sustained-release suspension was flattened and the average relative bioavailability (Fr) was 116.65% compared with the commercial MH sustained-release capsules. CONCLUSIONS The findings showed that the MH sustained-release suspension was successfully formulated with acceptable pharmacokinetic indices for effective treatment of Alzheimer's disease.
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Affiliation(s)
- Hongfei Liu
- College of Pharmacy, Jiangsu University, Zhenjiang, China
- Jiangsu Sunan Pharmaceutical Industrial Co., Ltd, Zhenjiang, P.R. China
| | - Ying Bao
- College of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Xiangping Lai
- College of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Yingshu Feng
- Zhenjiang Key Laboratory of Functional Chemistry, Institute of Medicine & Chemical Engineering, Zhenjiang College, Zhenjiang, China
| | - Dan Yang
- Yangtze River Pharmaceutical Group Nanjing Hailing Pharmaceutical Company, Nanjing, China
| | - Rui Sun
- College of Pharmacy, Jiangsu University, Zhenjiang, China
| | | | - Haibing He
- Department of Pharmaceutics, Shen yang Pharmaceutical University, Shen yang, China
- Jiangsu Haizhihong Biomedical Co., Ltd, Nantong, P.R. China
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Youssef SH, Kim S, Khetan R, Afinjuomo F, Song Y, Garg S. The development of 5-fluorouracil biodegradable implants: A comparative study of PCL/PLGA blends. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
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Mariz M, Murta J, Gil MH, Ferreira P. An ocular insert with zero-order extended delivery: Release kinetics and mathematical models. Eur J Pharm Biopharm 2022; 181:79-87. [PMID: 36351492 DOI: 10.1016/j.ejpb.2022.10.023] [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: 08/09/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/08/2022]
Abstract
Ocular inserts (InEye®), were prepared based on two distinct formulations of PCL-PEG-PCL block copolymers - one with 33 % and the other with 24 % of PEG 600. Ring-open-polymerisation was used to link ε-caprolactone monomers to PEG hydroxyl end-groups. Molecular weight, PCL/PEG ratio, mass loss and swelling of different polymeric samples where determined. Based on the previously prepared block copolymers, ophthalmic inserts were assembled. These were prepared with an ellipsoidal shape by dripping melted polymer over a micro-tablet of moxifloxacin, used as drug model for this study, which therefore became entrapped in a central core coated with a polymer layer that functioned as a control-release barrier. The release kinetics of the model drug revealed a strong dependence on the PEG percentage on the polymer. Inserts' size and the amount of drug immobilized also had an important effect on the drug release profile. All release profiles followed a zero-order pattern, with 95 % of the drug being release at a constant rate. With drug releases varying from 20 to 200 days, and no initial burst, InEye® performance is unique among drug delivery systems and seems to be a very promising new formulation technology for preparing tailor-made ophthalmic inserts for prolonged and constant release of drug, which is needed for chronic diseases such as glaucoma, where compliance to treatment is essential for preventing optic-nerve lesions.
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Affiliation(s)
- M Mariz
- University of Coimbra, Chemical Engineering Department, CIEPQPF, 3030-790 Coimbra, Portugal.
| | - J Murta
- Department of Ophthalmology, Coimbra University Hospital Centre (CHUC), Praceta Professor Mota Pinto, 3004-561, Portugal
| | - M H Gil
- University of Coimbra, Chemical Engineering Department, CIEPQPF, 3030-790 Coimbra, Portugal
| | - P Ferreira
- University of Coimbra, Chemical Engineering Department, CIEPQPF, 3030-790 Coimbra, Portugal; Polytechnic Institute of Coimbra, ISEC, DEQB, Rua Pedro Nunes, Quinta da Nora, Coimbra 3030-199, Portugal.
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Agrawal S, Fernandes J, Shaikh F, Patel V. Quality aspects in the development of pelletized dosage forms. Heliyon 2022; 8:e08956. [PMID: 35243077 PMCID: PMC8873546 DOI: 10.1016/j.heliyon.2022.e08956] [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: 11/15/2021] [Revised: 01/27/2022] [Accepted: 02/11/2022] [Indexed: 12/03/2022] Open
Abstract
The aim of this work was to identify and collate the major common challenges that arise during pellet development. These challenges focus on aspects right from raw material properties until the final drying process of the pelletization. The challenges associated with the particle size of drug and excipients, physicochemical properties, drug excipient interaction and the effect of type/grade and amount of raw material on the pellet properties are covered in this review. Technological and process related challenges within the commonly used pelletization techniques such as extrusion-spheronization, hot-melt extrusion and layering techniques are also emphasized. The paper likewise gives an insight to the possible ways of addressing the quality of pellets during development.
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Kriplani P, Guarve K, Baghel US. Novel Herbal Topical Patch Containing Curcumin and Arnica montana for the Treatment of Osteoarthritis. Curr Rheumatol Rev 2020; 16:43-60. [PMID: 30767746 DOI: 10.2174/1573397115666190214164407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 01/30/2019] [Accepted: 02/07/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Osteoarthritis (OA) ranks fifth among all forms of disability affecting 10% of the world population. Current treatments available are associated with multiple side effects and do not slow down the progression of the disease. Moreover, no such effective treatment is available to date in various systems of medicine to treat osteoarthritis. Curcumin and Arnica have shown evident clinical advances in the treatment of osteoarthritis. OBJECTIVE The aim of the present study was to design, optimize and characterize novel herbal transdermal patches of curcumin and Arnica montana using factorial design. METHODS A multiple factorial design was employed to investigate the effect of hydroxypropyl methyl cellulose, ethyl cellulose and jojoba oil on elongation and drug release. Transdermal patches were evaluated by FTIR, DSC, FESEM, ex vivo drug permeation, anti osteoarthritic activity and analgesic activity. RESULTS Independent variables exhibited a significant effect on the physicochemical properties of the prepared formulations. The higher values of drug release and elongation were observed with the higher concentration of hydroxypropyl methylcellulose and jojoba oil. Anti osteoarthritic activity was assessed by complete Freund's adjuvant arthritis model; using rats and analgesic activity by Eddy's hot plate method, using mice. Combination patch exhibited good anti osteoarthritic and analgesic activity as compare to individual drug patches. CONCLUSION The design results revealed that the combination patch exhibited good physicochemical, anti osteoarthritic and analgesic activity for the treatment of osteoarthritis in animals. More plants and their combinations should be explored to get reliable, safe and effective formulations that can compete with synthetic drugs.
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Affiliation(s)
- Priyanka Kriplani
- Guru Gobind Singh College of Pharmacy, Yamunanagar 135001, Haryana, India.,Department of Research, Innovation and Consultancy (RIC), l.K. Gujral Punjab Technical University, Jalandhar 144603, Punjab, India
| | - Kumar Guarve
- Guru Gobind Singh College of Pharmacy, Yamunanagar 135001, Haryana, India
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Nita L, Chiriac A, Bercea M, Ghilan A, Rusu A, Dumitriu R, Mititelu-Tartau L. Multifunctional hybrid 3D network based on hyaluronic acid and a copolymer containing pendant spiroacetal moieties. Int J Biol Macromol 2019; 125:191-202. [DOI: 10.1016/j.ijbiomac.2018.12.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 11/27/2018] [Accepted: 12/04/2018] [Indexed: 02/07/2023]
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Gracia R, Yus C, Abian O, Mendoza G, Irusta S, Sebastian V, Andreu V, Arruebo M. Enzyme structure and function protection from gastrointestinal degradation using enteric coatings. Int J Biol Macromol 2018; 119:413-422. [DOI: 10.1016/j.ijbiomac.2018.07.143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 07/19/2018] [Accepted: 07/23/2018] [Indexed: 12/18/2022]
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Oral Modified Release Multiple-Unit Particulate Systems: Compressed Pellets, Microparticles and Nanoparticles. Pharmaceutics 2018; 10:pharmaceutics10040176. [PMID: 30287798 PMCID: PMC6321440 DOI: 10.3390/pharmaceutics10040176] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/07/2018] [Accepted: 09/16/2018] [Indexed: 01/06/2023] Open
Abstract
Oral modified-release multiparticulate dosage forms, which are also referred to as oral multiple-unit particulate systems, are becoming increasingly popular for oral drug delivery applications. The compaction of polymer-coated multiparticulates into tablets to produce a sustained-release dosage form is preferred over hard gelatin capsules. Moreover, multiparticulate tablets are a promising solution to chronic conditions, patients’ adherence, and swallowing difficulties if incorporated into orodispersible matrices. Nonetheless, the compaction of multiparticulates often damages the functional polymer coat, which results in a rapid release of the drug substance and the subsequent loss of sustained-release properties. This review brings to the forefront key formulation variables that are likely to influence the compaction of coated multiparticulates into sustained-release tablets. It focusses on the tabletting of coated drug-loaded pellets, microparticles, and nanoparticles with a designated section on each. Furthermore, it explores the various approaches that are used to evaluate the compaction behaviour of particulate systems.
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Shin TH, Im SH, Goh MS, Lee ES, Ho MJ, Kim CH, Kang MJ, Choi YW. Novel Extended-Release Multiple-Unit System of Imidafenacin Prepared by Fluid-Bed Coating Technique. AAPS PharmSciTech 2018; 19:2639-2645. [PMID: 29931609 DOI: 10.1208/s12249-018-1100-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 06/06/2018] [Indexed: 11/30/2022] Open
Abstract
The objective of this study was to formulate once-a-day extended-release (ER) pellet system of imidafenacin (IDN), a recently approved urinary antispasmodic agent with twice-a-day dosing regimen. The sugar sphere pellets were firstly layered with IDN and hypromellose and then coated with Eudragit RS (copolymers of acrylic and methacrylic acid esters), employed as a release modifier, using a fluid-bed coater. Solid-state characterizations using solid-state X-ray diffraction and differential scanning calorimeter indicated that the antispasmodic agent was homogeneously layered onto the pellets in an amorphous state. Drug release from multiple-unit ER system was effectively retarded in proportion to the amount of Eudragit RS in the outer layer, with a high correlation value above 0.86. In a pharmacokinetic evaluation in beagle dogs, the plasma concentration profile of IDN was markedly protracted by ER pellets, exhibiting delayed the time needed to reach the maximum drug concentration and the elimination half-life in plasma, compared to the commercial immediate release form (Uritos® tablet, Kyorin Pharmaceutical Co., Ltd., Japan). Therefore, the novel ER pellets can be a promising tool for oral IDN therapy, providing a once-a-day dosing regimen, and thus, improving patient compliance.
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Chaudhary RS, Patel T, Kumar JR, Chan M. Effect of substitution of plasticizer dibutyl phthalate with dibutyl sebacate on Eudragit ® RS30D drug release rate control. Pharm Dev Technol 2018; 24:276-282. [PMID: 29688126 DOI: 10.1080/10837450.2018.1469151] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
In the current study, the influence of type of plasticizer used with Eudragit® RS 30D on the drug release was investigated in solid dosage form extrusion/spheronization, and film coating. The drug pellets were coated for controlling drug release with Eudragit® RS 30D containing dibutyl phthalate and compared with dibutyl sebacate as an alternative plasticizer. To study the influence of pH of the dissolution medium on the drug release profile, capsules are tested for drug release profile at pH 1.2, 4.4, and 6.3. Additionally, the aging effect on the curing of Eudragit® RS 30D is evaluated by exposing the capsules dosage form to room temperature (25 °C ± 2 °C/60% ± 5% RH) for time 0, 3, 6, and 9 months, accelerated temperature (40 °C ± 2 °C/75% ± 5% RH) for time 0, 3, and 6 months, and intermediate temperature (30 °C ± 2 °C/65% ± 5% RH) for time 0, 6, and 9 months. The replacement of dibutyl phthalate, with dibutyl sebacate for polymer coating system in similar concentration is comparable with respect to plasticization effect. The coalescence of the polymer particles is not changed and requires no additional processing parameter control or additional curing time.
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Patra CN, Priya R, Swain S, Kumar Jena G, Panigrahi KC, Ghose D. Pharmaceutical significance of Eudragit: A review. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2017. [DOI: 10.1016/j.fjps.2017.02.001] [Citation(s) in RCA: 101] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Jennings CL, Dziubla TD, Puleo DA. Combined Effects of Drugs and Plasticizers on the Properties of Drug Delivery Films. J BIOACT COMPAT POL 2016; 31:323-333. [PMID: 27821905 DOI: 10.1177/0883911515627178] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Formation of scar tissue may be reduced or prevented if wounds were locally treated with a combination of molecules tuned to the different healing phases, guiding tissue regeneration along a scar free path. To this end, drug delivery devices made of cellulose acetate phthalate and Pluronic F-127 were loaded with either quercetin or pirfenidone and plasticized with either triethyl citrate (TEC) or tributyl citrate (TBC). Quercetin inhibits oxidative stress, and pirfenidone has been shown to reduce production of pro-inflammatory and fibrogenic molecules. The combined effects of drug and plasticizer on erosion, release, and mechanical properties of the drug delivery films were investigated. TEC-plasticized films containing quercetin released drug at a slower rate than did TBC films. Pirfenidone-loaded films released drug at a faster rate than erosion occurred for both types of plasticizers. Higher plasticizer contents of both TEC and TBC increased the elongation and decreased the elastic modulus. In contrast, increased pirfenidone loading in both TEC and TBC films resulted in a significantly higher modulus, an anti-plasticizer effect. Adding pirfenidone significantly decreased elongation for all film types, but quercetin-loaded samples had significantly greater elongation with increasing drug content. Films containing quercetin elongated more than did pirfenidone-loaded films. Quercetin is over 1.5 times larger than pirfenidone, has water solubility over 12 times lower, and has 6 times more bonding sites than pirfenidone. These differences affected how the two drugs interacted with cellulose acetate phthalate and Pluronic F-127 and thereby determined polymer properties. Drug release, erosion, and mechanical properties of association polymer films can be tailored by the characteristics of the drugs and plasticizers included in the system.
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Affiliation(s)
- Cheryl L Jennings
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA
| | - Thomas D Dziubla
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY, USA
| | - David A Puleo
- Department of Biomedical Engineering, University of Kentucky, Lexington, KY, USA
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Enayatifard R, Mahjoob A, Ebrahimi P, Ebrahimnejad P. Evaluation of the effect of physical variables on in vitro release of diclofenac pellets using Box-Behnken design. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2015; 18:710-4. [PMID: 26351563 PMCID: PMC4556766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 05/16/2015] [Indexed: 11/23/2022]
Abstract
OBJECTIVES A Box-Behnken design was used for evaluation of Eudragit coated diclofenac pellets. The purpose of this work was to optimize diclofenac pellets to improve the physicochemical properties using experimental design. MATERIALS AND METHODS Diclofenac was loaded onto the non-pareil beads using conventional coating pan. Film coating of pellets was done at the same pan. The effect of plasticizer level, curing temperature and curing time was determined on the release of diclofenac from pellets coated with polymethacrylates. RESULTS Increasing the plasticizer in the coating formula led to decrease in drug release and increasing the curing temperature and time resulted in higher drug release. The optimization process generated an optimum of 35% drug release at 3 hr. The level of plasticizer concentration, curing temperature and time were 20% w/w, 55 °C and 24 hr, respectively. CONCLUSION This study showed that by controllinig the physical variables optimum drug release were obtained.
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Affiliation(s)
- Reza Enayatifard
- Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran,Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Aiding Mahjoob
- Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran
| | - Pouneh Ebrahimi
- Department of Chemistry, Faculty of Basic Sciences, Golestan University, Gorgan, Iran
| | - Pedram Ebrahimnejad
- Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran,Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran,Corresponding author: Pedram Ebrahimnejad. Department of Pharmaceutics, Faculty of Pharmacy, Mazandaran University of Medical Sciences, Sari, Iran. Tel: +98-151-3543081; Fax: +98-151-2261626;
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Liu Z, Wang W, Chen H, Liu J, Zhang W. Novel application method of talcum powder to prevent sticking tendency and modify release of esomeprazole magnesium enteric-coated pellets. Pharm Dev Technol 2015; 21:405-14. [DOI: 10.3109/10837450.2015.1016616] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Ahmad H, Khalifeh I, Alkhalidi B, Aiedeh K, Alkhatib HS. Application of active layering and coating techniques in the development of a multiparticulate, controlled release dosage form of a high-dose, highly soluble drug. Pharm Dev Technol 2013; 19:556-64. [PMID: 23767814 DOI: 10.3109/10837450.2013.805778] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT The success of the development of controlled release, multilayered, multiparticulate dosage form of a high-dose, highly-soluble drug is dependent upon proper material and processing choices. OBJECTIVE To develop a controlled release dosage form of diltiazem hydrochloride using active layering and coating. METHODS Active layering was achieved by spraying a drug solution onto sugar cores using polyvinyl alcohol - polyethylene glycol as a binder. Layered pellets with highest loading and lowest binder content were coated using aqueous dispersions of polyvinyl acetate (PVAc). The effects of the plasticizer and curing on drug release were evaluated. RESULTS AND DISCUSSION The binder level had no effect on the process efficiency. Drug release from PVAc-coated pellets was slowed by increasing PVAc level. Plasticization slowed drug release in comparison to nonplasticized formulations. Curing affected drug release of nonplasticized formulations only. Protection against humidity was essential in stabilizing drug release under stability study conditions. CONCLUSION Materials and process used were suitable to face the challenge posed by the high dose of the water-soluble drug on the success of the formulation. The effects of the plasticizer, curing and ability of packaging to protect against elevated humidity on the performance of the studied system should be considered in development.
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Affiliation(s)
- Haitham Ahmad
- Department of Pharmaceutics and Pharmaceutical Technology, Faculty of Pharmacy, University of Jordan , Amman , Jordan and
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Ha JM, Kim JY, Oh TO, Rhee YS, Chi SC, Kuk H, Park CW, Park ES. Preparation and evaluation of sustained-release doxazosin mesylate pellets. Chem Pharm Bull (Tokyo) 2013; 61:371-8. [PMID: 23385960 DOI: 10.1248/cpb.c12-00767] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Doxazosin mesylate (DXM) sustained release pellets were prepared by an extrusion-spheronization and fluid-bed coating technique. The core pellets containing DXM were prepared by extrusion-spheronization technique, and coated by a fluid-bed coater to control the release of DXM. The factors affecting to properties of pellets, such as diluent content, type and coating level of coating agents and plasticizers were studied in the present study. Polymethacrylate derivatives (Eudragit® RS PO and RL PO) were used for coating agents, and polyethylene glycol 6000 (PEG 6000), triethyl citrate (TEC) and castor oil were as plasticizers. To evaluate the properties of prepared pellets, the size of prepared pellets was investigated by sieve analysis technique and the morphology of pellets was evaluated by scanning electron microscopy. Through the dissolution test, factors that have an effect on the dissolution of the drug were evaluated. As the content ratio of microcrystalline cellulose (MCC) had increased, the dissolution was proportionally sustained. Eudragit® RS PO had more marked sustaining effect on the dissolution rate than Eudragit® RL PO, and the effect was more pronounced with the increased coating level. PEG 6000 was an appropriate plasticizer for DXM pellets, and increasing the content of PEG 6000, was also slightly decreasing the dissolution rate.
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Stange U, Führling C, Gieseler H. Taste masking of naproxen sodium granules by fluid-bed coating. Pharm Dev Technol 2013; 19:137-47. [DOI: 10.3109/10837450.2012.757784] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Preparation and evaluation of spray-dried hyaluronic acid microspheres for intranasal delivery of fexofenadine hydrochloride. Eur J Pharm Sci 2010; 40:9-15. [DOI: 10.1016/j.ejps.2010.02.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2009] [Revised: 01/22/2010] [Accepted: 02/03/2010] [Indexed: 11/23/2022]
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