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Mukherjee S, Khanam J. Exploring the Effectiveness of Carboxymethylated and Crosslinked Albizia Procera Gum in Diltiazem Hydrochloride Matrix Tablets: A Comparative Analysis. Chem Pharm Bull (Tokyo) 2024:c23-00652. [PMID: 38644216 DOI: 10.1248/cpb.c23-00652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
This study investigates the efficacy of modified Albizia procera gum as a release-retardant polymer in Diltiazem hydrochloride (DIL) matrix tablets. Carboxymethylated Albizia procera gum (CAP) and ionically crosslinked carboxymethylated Albizia procera gum (Ca-CAP) were utilized, with Ca-CAP synthesized via crosslinking CAP with calcium ions (Ca2+) using calcium chloride (CaCl2). FTIR analysis affirmed polymer compatibility, while Differential scanning calorimetry (DSC) and X-ray diffraction (XRD) assessed thermal behavior and crystallinity, respectively. Zeta potential analysis explored surface charge and electrostatic interactions, while rheology examined flow and viscoelastic properties. Swelling and erosion kinetics provided insights into water penetration and stability. CAP's carboxymethyl groups (-CH2-COO-) heightened divalent cation reactivity, and crosslinking with CaCl2 produced Ca-CAP through -CH2-COO- and Ca2+ interactions. Structural similarities between the polymers were revealed by FTIR, with slight differences. DSC indicated modified thermal behavior in Ca-CAP, while Zeta potential analysis showcased negative charges, with Ca-CAP exhibiting lower negativity. XRD highlighted increased crystallinity in Ca-CAP due to calcium crosslinking. Minimal impact on RBC properties was observed with both polymers compared to the positive control as water for injection (WFI). Ca-CAP exhibited improved viscosity, strength, controlled swelling, and erosion, allowing prolonged drug release compared to CAP. Stability studies confirmed consistent six-month drug release, emphasizing Ca-CAP's potential as a stable, sustained drug delivery system over CAP. Robustness and accelerated stability tests supported these findings, underscoring the promise of Ca-CAP in controlled drug release applications.
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Affiliation(s)
| | - Jasmina Khanam
- Department of Pharmaceutical Technology, Jadavpur University
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Wilkins CA, Hamman H, Hamman JH, Steenekamp JH. Fixed-Dose Combination Formulations in Solid Oral Drug Therapy: Advantages, Limitations, and Design Features. Pharmaceutics 2024; 16:178. [PMID: 38399239 PMCID: PMC10892518 DOI: 10.3390/pharmaceutics16020178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 02/25/2024] Open
Abstract
Whilst monotherapy is traditionally the preferred treatment starting point for chronic conditions such as hypertension and diabetes, other diseases require the use of multiple drugs (polytherapy) from the onset of treatment (e.g., human immunodeficiency virus acquired immunodeficiency syndrome, tuberculosis, and malaria). Successful treatment of these chronic conditions is sometimes hampered by patient non-adherence to polytherapy. The options available for polytherapy are either the sequential addition of individual drug products to deliver an effective multi-drug regimen or the use of a single fixed-dose combination (FDC) therapy product. This article intends to critically review the use of FDC drug therapy and provide an insight into FDC products which are already commercially available. Shortcomings of FDC formulations are discussed from multiple perspectives and research gaps are identified. Moreover, an overview of fundamental formulation considerations is provided to aid formulation scientists in the design and development of new FDC products.
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Affiliation(s)
| | | | | | - Jan H. Steenekamp
- Centre of Excellence for Pharmaceutical Sciences (Pharmacen™), Faculty of Health Sciences, North-West University, Private Bag X6001, Potchefstroom 2520, South Africa; (C.A.W.); (H.H.); (J.H.H.)
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Mukherjee K, Dutta P, Giri TK. Al 3+/Ca 2+ cross-linked hydrogel matrix tablet of etherified tara gum for sustained delivery of tramadol hydrochloride in gastrointestinal milieu. Int J Biol Macromol 2023; 232:123448. [PMID: 36709815 DOI: 10.1016/j.ijbiomac.2023.123448] [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: 12/02/2022] [Revised: 01/16/2023] [Accepted: 01/24/2023] [Indexed: 01/28/2023]
Abstract
Tara gum (TG) was derivatized to carboxymethyl TG (CMTG) and then cross-linked with Al3+/Ca2+ ions to prepare Al/Ca cross-linked CMTG matrices for sustained delivery of Tramadol Hydrochloride (TH), a highly water-soluble drug. The effect of Al3+/Ca2+ ions concentration on swelling, erosion, and drug release behavior from Al/Ca-CMTG matrices was investigated. Al-CMTG matrices had greater cross-linking density, produced a more rigid and denser hydrogel layer than Ca-CMTG matrices. The rate of swelling, erosion, and in vitro drug release from Al-CMTG matrices was slower than from Ca-CMTG matrices. The most important finding of our study indicated that at the same concentration of cross-linking ions, the release of TH from Al-CMTG matrices was slower compared to Ca-CMTG matrices. The optimized formulation containing 9 % w/w AlCl3 in CMTG matrices released TH in a sustained manner up to 12 h in the gastrointestinal milieu. Moreover, it was observed that the prepared optimized formulation exhibited a more sustained release of TH compared to the marketed product.
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Affiliation(s)
- Kaushik Mukherjee
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, West Bengal, India
| | - Pallobi Dutta
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, West Bengal, India
| | - Tapan Kumar Giri
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, West Bengal, India.
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Cai R, Pan S, Li R, Xu X, Pan S, Liu F. Curcumin loading and colon release of pectin gel beads: Effect of different de-esterification method. Food Chem 2022; 389:133130. [DOI: 10.1016/j.foodchem.2022.133130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 04/18/2022] [Accepted: 04/29/2022] [Indexed: 11/29/2022]
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Effect of Solvents, Stabilizers and the Concentration of Stabilizers on the Physical Properties of Poly(d,l-lactide- co-glycolide) Nanoparticles: Encapsulation, In Vitro Release of Indomethacin and Cytotoxicity against HepG2-Cell. Pharmaceutics 2022; 14:pharmaceutics14040870. [PMID: 35456705 PMCID: PMC9028368 DOI: 10.3390/pharmaceutics14040870] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/20/2022] [Accepted: 04/12/2022] [Indexed: 01/27/2023] Open
Abstract
A biocompatible, biodegradable and FDA-approved polymer [Poly lactic-co-glycolic acid (PLGA)] was used to prepare the nanoparticles (NPs) to observe the effect of solvents, stabilizers and their concentrations on the physical properties of the PLGA-NPs, following the encapsulation and in vitro release of Indomethacin (IND). PLGA-NPs were prepared by the single-emulsion solvent evaporation technique using dichloromethane (DCM)/chloroform as the organic phase with Polyvinyl-alcohol (PVA)/Polyvinylpyrrolidone (PVP) as stabilizers to encapsulate IND. The effects of different proportions of PVA/PVP with DCM/chloroform on the physiochemical properties (particle size, the polydispersity index, the zeta potential by Malvern Zetasizer and morphology by SEM) of the NPs were investigated. DSC was used to check the physical state, the possible complexation of PLGA with stabilizer(s) and the crystallinity of the encapsulated drug. Stabilizers at all concentrations produced spherical, regular-shaped, smooth-surfaced discrete NPs. Average size of 273.2–563.9 nm was obtained when PVA (stabilizer) with DCM, whereas it ranged from 317.6 to 588.1 nm with chloroform. The particle size was 273.2–563.9 nm when PVP was the stabilizer with DCM, while it was 381.4–466.6 nm with chloroform. The zeta potentials of PVA-stabilized NPs were low and negative (−0.62 mV) while they were comparatively higher and positive for PVP-stabilized NPs (+17.73 mV). Finally, drug-loaded optimal NPs were composed of PLGA (40 mg) and IND (4 mg) in 1 mL DCM/chloroform with PVA/PVP (1–3%), which resulted in sufficient encapsulation (54.94–74.86%) and drug loading (4.99–6.81%). No endothermic peak of PVA/PVP appeared in the optimized formulation, which indicated the amorphous state of IND in the core of the PLGA-NPs. The in vitro release study indicated a sustained release of IND (32.83–52.16%) from the PLGA-NPs till 72 h and primarily followed the Higuchi matrix release kinetics followed by Korsmeyer–Peppas models. The cell proliferation assay clearly established that the organic solvents used to prepare PLGA-NPs had evaporated. The PLGA-NPs did not show any particular toxicity in the HepG2 cells within the dose range of IND (250–500 µg/mL) and at an equivalent concentration of PLGA-NPs (3571.4–7142.7 µg/mL). The cytotoxicity of the hepatotoxic drug (IND) was reduced by its encapsulation into PLGA-NPs. The outcomes of this investigation could be implemented to prepare PLGA-NPs of acceptable properties for the encapsulation of low/high molecular weight drugs. It would be useful for further in vitro and in vivo applications to use this delivery system.
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Zaitseva O, Khudyakov A, Sergushkina M, Solomina O, Polezhaeva T. Pectins as a universal medicine. Fitoterapia 2020; 146:104676. [DOI: 10.1016/j.fitote.2020.104676] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 05/19/2020] [Accepted: 06/10/2020] [Indexed: 02/06/2023]
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Physicochemical and microbiological characterization of pectin-based gelled emulsions coating applied on pre-cut carrots. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2019.105573] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Vlachou M, Tragou K, Siamidi A, Kikionis S, Chatzianagnostou AL, Mitsopoulos A, Ioannou E, Roussis V, Tsotinis A. Modified in vitro release of the chronobiotic hormone melatonin from matrix tablets based on the marine sulfated polysaccharide ulvan. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.11.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Adi-Dako O, Ofori-Kwakye K, Boakye-Gyasi ME, Oppong Bekoe S, Okyem S. In Vitro Evaluation of Cocoa Pod Husk Pectin as a Carrier for Chronodelivery of Hydrocortisone Intended for Adrenal Insufficiency. JOURNAL OF DRUG DELIVERY 2017; 2017:8284025. [PMID: 29435369 PMCID: PMC5757137 DOI: 10.1155/2017/8284025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 11/22/2017] [Accepted: 11/27/2017] [Indexed: 02/06/2023]
Abstract
This study evaluated the in vitro potential of cocoa pod husk (CPH) pectin as a carrier for chronodelivery of hydrocortisone intended for adrenal insufficiency. FTIR studies found no drug-CPH pectin interactions, and chemometric analysis showed that pure hydrocortisone bears closer similarity to hydrocortisone in hot water soluble pectin (HWSP) than hydrocortisone in citric acid soluble pectin (CASP). CPH pectin-based hydrocortisone matrix tablets (~300 mg) were prepared by direct compression and wet granulation techniques, and the tablet cores were film-coated with a 15% HPMC formulation for timed release, followed by a 12.5% Eudragit® S100 formulation for acid resistance. In vitro drug release studies of the uncoated and coated matrix tablets in simulated gastrointestinal conditions showed that wet granulation tablets exhibit greater retardation of drug release in aqueous medium than directly compressed tablets. CASP showed greater suppression of drug release in aqueous medium than HWSP. Wet granulation HWSP-based matrix tablets coated to a final coat weight gain of ~25% w/w were optimized for chronodelivery of hydrocortisone in the colon. The optimized tablets exhibited a lag phase of ~6 h followed by accelerated drug release in the colonic region and have potential to control night time cortisol levels in patients with adrenal insufficiency.
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Affiliation(s)
- Ofosua Adi-Dako
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
- School of Pharmacy, University of Ghana, Legon, Ghana
| | - Kwabena Ofori-Kwakye
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Mariam El Boakye-Gyasi
- Department of Pharmaceutics, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Samuel Oppong Bekoe
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
| | - Samuel Okyem
- Central Laboratory, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana
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Effect of Ca +2 ion on the release of diltiazem hydrochloride from matrix tablets of carboxymethyl xanthan gum graft polyacrylamide. Int J Biol Macromol 2017; 94:691-697. [DOI: 10.1016/j.ijbiomac.2016.09.096] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Revised: 08/28/2016] [Accepted: 09/11/2016] [Indexed: 11/20/2022]
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11
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Figueroa-Ochoa EB, Villar-Alvarez EM, Cambón A, Mistry D, Llovo J, Attwood D, Barbosa S, Soltero J, Taboada P. Lenghty reverse poly(butylene oxide)-poly(ethylene oxide)-poly(butylene oxide) polymeric micelles and gels for sustained release of antifungal drugs. Int J Pharm 2016; 510:17-29. [DOI: 10.1016/j.ijpharm.2016.06.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 05/31/2016] [Accepted: 06/06/2016] [Indexed: 12/21/2022]
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12
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Optimizing indomethacin-loaded chitosan nanoparticle size, encapsulation, and release using Box–Behnken experimental design. Int J Biol Macromol 2016; 87:329-40. [DOI: 10.1016/j.ijbiomac.2016.02.033] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 01/20/2016] [Accepted: 02/11/2016] [Indexed: 11/18/2022]
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13
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Physicochemical and Antimicrobial Properties of Cocoa Pod Husk Pectin Intended as a Versatile Pharmaceutical Excipient and Nutraceutical. JOURNAL OF PHARMACEUTICS 2016; 2016:7608693. [PMID: 27066294 PMCID: PMC4808676 DOI: 10.1155/2016/7608693] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 02/14/2016] [Indexed: 11/18/2022]
Abstract
The physicochemical and antimicrobial properties of cocoa pod husk (CPH) pectin intended as a versatile pharmaceutical excipient and nutraceutical were studied. Properties investigated include pH, moisture content, ash values, swelling index, viscosity, degree of esterification (DE), flow properties, SEM, FTIR, NMR, and elemental content. Antimicrobial screening and determination of MICs against test microorganisms were undertaken using agar diffusion and broth dilution methods, respectively. CPH pectin had a DE of 26.8% and exhibited good physicochemical properties. Pectin had good microbiological quality and exhibited pseudoplastic, shear thinning behaviour, and high swelling capacity in aqueous media. The DE, FTIR, and NMR results were similar to those of previous studies and supported highly acetylated low methoxy pectin. CPH pectin was found to be a rich source of minerals and has potential as a nutraceutical. Pectin showed dose-dependent moderate activity against gram positive and gram negative microorganisms but weak activity against Listeria spp. and A. niger. The MICs of pectin ranged from 0.5 to 4.0 mg/mL, with the highest activity against E. coli and S. aureus (MIC: 0.5-1.0 mg/mL) and the lowest activity against A. niger (MIC: 2.0-4.0 mg/mL). The study has demonstrated that CPH pectin possesses the requisite properties for use as a nutraceutical and functional pharmaceutical excipient.
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Jia D, Wang D, Wu H, Lian Q. Preparation and adsorption properties of magnetic Co0.5Ni0.5Fe2O4–chitosan nanoparticles. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216030294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Zheng XF, Lian Q, Yang H, Wang X. Surface Molecularly Imprinted Polymer of Chitosan Grafted Poly(methyl methacrylate) for 5-Fluorouracil and Controlled Release. Sci Rep 2016; 6:21409. [PMID: 26892676 PMCID: PMC4759818 DOI: 10.1038/srep21409] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 01/18/2016] [Indexed: 11/09/2022] Open
Abstract
The molecular surface imprinted graft copolymer of chitosan with methyl methacrylate (MIP-CS-g-PMMA) were prepared by free radical polymerization with 5-fluorouracil (5-FU) as the template molecule using initiator of ammonium persulfate as adsorption system. MIPs were characterized by FTIR, X-ray diffraction, thermo-gravimetric analysis, (1)H NMR and SEM. The mechanism of graft copolymerization and factors affected graft reaction were studied in details, and the optimum reaction conditions (to the highest %G and %E as the standard) were obtained at [MMA] 1.2 mol/L, [Chitosan] 16.67 mol/L, [initiator] 0.0062 mol/L, temperature 60 °C and reaction time 7 h. MIPs exhibited high recognition selectivity and excellent combining affinity to template molecular. The in vitro release of the 5-FU was highly pH-dependent and time delayed. The release behavior showed that the drugs did not release in simulated gastric fluid (pH = 1.0), and the drug release was small in the simulated small intestinal fluid (pH = 6.8), and drug abrupt release will be produced in the simulated colon fluid (pH = 7.4), indicating excellent colon-specific drug delivery behavior.
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Affiliation(s)
- Xue-Fang Zheng
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
| | - Qi Lian
- College of Chemical Engineering, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
| | - Hua Yang
- School of Chemistry and Chemical Engineering of Guangxi University, Nanning, 530004, China
| | - Xiuping Wang
- College of Life Science and Technology, Hebei Normal University of Science and Technology, Qinhuangdao 066600, China
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Lian Q, Cui Y, Zheng X, Wu H. Preparation and adsorption of magnetic Co0.5Ni0.5Fe2O4-chitosan nanoparticles. RUSS J APPL CHEM+ 2016. [DOI: 10.1134/s10704272150110208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Zheng XF, Lian Q, Yang H, Wu HX, Cheng C, Yin G, Zhang W. Preparation and characterization of temperature-memory nanoparticles of MIP-CS-g-PMMA. RSC Adv 2016. [DOI: 10.1039/c6ra22730a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A molecular imprinted graft copolymer of chitosan with methyl methacrylate (MIP-CS-g-PMMA) was prepared by free radical polymerization with aspirin as the template molecule and ammonium persulfate as the initiator.
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Affiliation(s)
- Xue-Fang Zheng
- College of Chemical Engineering
- Hebei Normal University of Science and Technology
- Qinhuangdao 066600
- China
| | - Qi Lian
- College of Chemical Engineering
- Hebei Normal University of Science and Technology
- Qinhuangdao 066600
- China
| | - Hua Yang
- School of Chemistry and Chemical Engineering of Guangxi University
- Nanning
- China
| | - Hai-Xia Wu
- Chemical and Pharmaceutical Engineering
- Hebei University of Science and Technology
- Shijiazhuang
- China
| | - Caihong Cheng
- Center of Analysis and Testing
- Hebei Normal University of Science and Technology
- Qinhuangdao 066600
- China
| | - Gengwen Yin
- Department of Research
- Hebei Normal University of Science and Technology
- Qinhuangdao 066600
- China
| | - Weiguo Zhang
- College of Urban Construction
- Hebei Normal University of Science and Technology
- Qinhuangdao 066600
- China
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18
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Controlled release of a model protein drug ovalbumin from thiolated hyaluronic acid matrix. J Drug Deliv Sci Technol 2015. [DOI: 10.1016/j.jddst.2015.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Lian Q, Zheng XF, Yang H. Potential applications of Ni0.5Mn0.5Fe2O4-chitosan nanoparticles as a drug delivery system. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2015. [DOI: 10.1134/s0036024415100258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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He W, Wu M, Huang S, Yin L. Matrix tablets for sustained release of repaglinide: Preparation, pharmacokinetics and hypoglycemic activity in beagle dogs. Int J Pharm 2015; 478:297-307. [DOI: 10.1016/j.ijpharm.2014.11.059] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 11/14/2014] [Accepted: 11/26/2014] [Indexed: 10/24/2022]
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21
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Wicker L, Kim Y, Kim MJ, Thirkield B, Lin Z, Jung J. Pectin as a bioactive polysaccharide – Extracting tailored function from less. Food Hydrocoll 2014. [DOI: 10.1016/j.foodhyd.2014.01.002] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Maity S, Sa B. Development and evaluation of Ca(+ 2) ion cross-linked carboxymethyl xanthan gum tablet prepared by wet granulation technique. AAPS PharmSciTech 2014; 15:920-7. [PMID: 24760471 PMCID: PMC4113612 DOI: 10.1208/s12249-014-0123-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2013] [Accepted: 04/01/2014] [Indexed: 11/30/2022] Open
Abstract
The objective of this work was to study the release behavior of prednisolone from calcium-cross-linked carboxymethyl xanthan gum (CMXG) tablets in dissolution medium having different pH values prevailing in the gastrointestinal lumen. Xanthan gum (XG) was derivatized to CMXG which was then cross-linked in situ with Ca(+2) ion during wet massing step of tablet preparation. Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry studies did not show any drug-polymer interaction although the drug underwent solid-state transformation during compression as evident from X-ray diffraction analysis. In vitro release study demonstrated that increase in the amount of Ca(+2) ion decreased the drug release, and beyond a certain amount, the drug release increased. While increase in both drug load and tablet crushing strength decreased the drug release, increase in exposure time in acid solution of pH 1.2 increased the overall release of the drug. The mechanism of drug release was non-Fickian/anomalous. The results indicated that variation in the amount of Ca(+2) ion can modulate the drug release from CMXG matrix tablets as needed.
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Affiliation(s)
- Siddhartha Maity
- Division of Pharmaceutics, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 India
| | - Biswanath Sa
- Division of Pharmaceutics, Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 India
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Ca-carboxymethyl xanthan gum mini-matrices: Swelling, erosion and their impact on drug release mechanism. Int J Biol Macromol 2014; 68:78-85. [DOI: 10.1016/j.ijbiomac.2014.04.036] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 03/19/2014] [Accepted: 04/17/2014] [Indexed: 11/24/2022]
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24
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Effect of ionic crosslink on the release of metronidazole from partially carboxymethylated guar gum tablet. Carbohydr Polym 2014; 106:414-21. [DOI: 10.1016/j.carbpol.2014.01.033] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 12/23/2013] [Accepted: 01/11/2014] [Indexed: 11/19/2022]
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25
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Wei X, Lu Y, Qi J, Wu B, Chen J, Xu H, Wu W. An in situ crosslinked compression coat comprised of pectin and calcium chloride for colon-specific delivery of indomethacin. Drug Deliv 2014; 22:298-305. [PMID: 24471938 DOI: 10.3109/10717544.2013.879965] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The use of pectin for colon-specific drug delivery has been extensively investigated; however, when used alone, pectin is often compromised due to its high solubility. This study explored the feasibility of using an in situ compression-coated crosslinking system, composed of pectin and calcium chloride, for colon-specific drug delivery. A pectin/calcium chloride (P/Ca) coating was compressed onto a core tablet. The colon specificity of the compression-coated tablet was verified by dissolution, pharmacokinetics and scintigraphy with (99m)Tc labeling. The in situ pectin and calcium chloride gel slowed the release of indomethacin. The lag time varied between 3 h and 7 h depending on the amount of calcium chloride and the coating weight. Pectinase triggered the release of indomethacin from the compression-coated tablet, which was then accelerated by the calcium chloride in the coating layer. The compression-coated tablet had a prolonged tmax and apparent t1/2, as well as a decreased Cmax and AUC0-t, compared with the core tablet counterpart. Evaluation with γ-scintigraphy verified colon-specific delivery of the compression-coated tablet. In conclusion, the P/Ca in situ crosslinking system worked well for colon-specific drug delivery.
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Affiliation(s)
- Xiuli Wei
- Key Laboratory of Smart Drug Delivery of Ministry of Education and PLA, School of Pharmacy, Fudan University , Shanghai , China and
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Jaipal A, Pandey M, Abhishek A, Vinay S, Charde S. Interaction of calcium sulfate with xanthan gum: Effect on in vitro bioadhesion and drug release behavior from xanthan gum based buccal discs of buspirone. Colloids Surf B Biointerfaces 2013; 111:644-50. [DOI: 10.1016/j.colsurfb.2013.06.052] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Revised: 06/27/2013] [Accepted: 06/29/2013] [Indexed: 10/26/2022]
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Silica-coated calcium pectinate beads for colonic drug delivery. Acta Biomater 2013; 9:6218-25. [PMID: 23219846 DOI: 10.1016/j.actbio.2012.11.031] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Revised: 10/15/2012] [Accepted: 11/27/2012] [Indexed: 11/21/2022]
Abstract
The aim of this work is to develop novel organic-inorganic hybrid beads for colonic drug delivery. For this purpose, calcium pectinate beads with theophylline are prepared by a cross-linking reaction between amidated low-methoxyl pectin and calcium ions. The beads are then covered with silica, starting from tetraethyoxysilane (TEOS), by a sol-gel process. The influence of TEOS concentration (0.25, 0.50, 0.75 and 1.00 M) during the process is studied in order to modulate the thickness of the silica layer around the pectinate beads and thus to control the drug release. The interactions between the silica coating and the organic beads are weak according to the physicochemical characterizations. A good correlation between physicochemical and in-vitro dissolution tests is observed. At concentrations of TEOS beyond 0.25 M, the silica layer is thick enough to act as a barrier to water uptake and to reduce the swelling ratio of the beads. The drug release is also delayed. Silica-coated pectinate beads are promising candidates for sustained drug delivery systems.
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Soares GA, Castro ADD, Cury BS, Evangelista RC. Blends of cross-linked high amylose starch/pectin loaded with diclofenac. Carbohydr Polym 2013; 91:135-42. [DOI: 10.1016/j.carbpol.2012.08.014] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 07/03/2012] [Accepted: 08/03/2012] [Indexed: 11/15/2022]
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Méndez J, Monteagudo A, Griebenow K. Stimulus-responsive controlled release system by covalent immobilization of an enzyme into mesoporous silica nanoparticles. Bioconjug Chem 2012; 23:698-704. [PMID: 22375899 DOI: 10.1021/bc200301a] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mesoporous silica nanoparticles (MSN) have emerged as an attractive class of drug delivery carriers for therapeutic agents. Herein, we explored the covalent immobilization of proteins into MSN to generate a stimulus-responsive controlled release system. First, MSN were functionalized with thiol groups using (mercaptopropyl)-trimethoxysilane (MPTMS). Functionalization was verified by X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FTIR) spectroscopy, and dynamic light scattering. The model enzyme carbonic anhydrase (CA) was coupled to sulfosuccinimidyl 6-[3'(2-pyridyldithio)-propionamido]hexanoate (Sulfo-LC-SPDP) at a low ratio of 1:1 to prevent enzyme inactivation and subsequently covalently immobilized into MSN via thiol-disulfide interchange. The enzyme could be released from MSN with 10 mM glutathione, which represents intracellular redox conditions, while it remained bound to the MSN at extracellular redox conditions represented by 1 μM glutathione. The activity of the released enzyme was >80% demonstrating that the enzyme was still largely functional and active after immobilization and release. Human cervical cancer (HeLa) cells were incubated with the MSN-CA bioconjugates at various concentrations for 24 h and the data show good biocompatibility. In summary, we demonstrate the potential of MSN as drug delivery systems for proteins.
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Affiliation(s)
- Jessica Méndez
- Department of Chemistry, University of Puerto Rico, Río Piedras Campus, P.O. Box 23346, San Juan, PR 00931-3346, USA
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Murphy C, Pillay V, Choonara YE, du Toit LC, Ndesendo VMK, Chirwa N, Kumar P. Optimization of a dual mechanism gastrofloatable and gastroadhesive delivery system for narrow absorption window drugs. AAPS PharmSciTech 2012; 13:1-15. [PMID: 22048877 DOI: 10.1208/s12249-011-9711-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2011] [Accepted: 10/06/2011] [Indexed: 02/07/2023] Open
Abstract
In order to overcome poor bioavailability of narrow absorption window drugs, a gastrosphere system comprising two mechanisms of gastric retention, namely buoyancy and gastroadhesion, has been investigated in this study employing poly(lactic-co-glycolic acid) (PLGA), polyacrylic acid (PAA), alginate, pectin, and a model drug metformin hydrochloride. Fifteen formulations were obtained using a Box-Behnken statistical design. The gastrosphere yield was above 80% in all cases; however, due to the high water solubility of metformin, drug entrapment efficacy was between 18% and 54%. Mean dissolution time and gastroadhesive strength were used as the formulation responses in order to optimize the formulation. Furthermore, the molecular mechanics force field simulations were performed to corroborate the experimental findings. Drug release profiles revealed three different release kinetics, namely, burst, first-order and zero-order release. Varying gastroadhesive results were obtained, and were highly sensitive to changes in polymer concentrations. FTIR revealed that strong bonds of PAA and PLGA were retained within the gastrosphere. Surface area and porosity analysis provided supporting evidence that the lyophilization process resulted in a significant increase in the porosity. Analysis of the surface morphology by SEM revealed that air pockets were spread over the entire surface of the gastrosphere, providing a visual proof of the high porosity and hence low density of the gastrosphere. The spatial disposition and energetic profile of the sterically constrained and geometrically optimized multi-polymeric complex of alginate, pectin, PAA, and PLGA corroborated the experimental results in terms of in vitro drug release and gastroadhesive strength of the fabricated gastrospheres.
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Physical properties of pectin–high amylose starch mixtures cross-linked with sodium trimetaphosphate. Int J Pharm 2012; 423:281-8. [DOI: 10.1016/j.ijpharm.2011.11.042] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 11/14/2011] [Accepted: 11/28/2011] [Indexed: 11/24/2022]
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Daniel-da-Silva AL, Moreira J, Neto R, Estrada AC, Gil AM, Trindade T. Impact of magnetic nanofillers in the swelling and release properties of κ-carrageenan hydrogel nanocomposites. Carbohydr Polym 2012; 87:328-335. [DOI: 10.1016/j.carbpol.2011.07.051] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/11/2011] [Accepted: 07/26/2011] [Indexed: 10/17/2022]
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Wong TW, Colombo G, Sonvico F. Pectin matrix as oral drug delivery vehicle for colon cancer treatment. AAPS PharmSciTech 2011; 12:201-14. [PMID: 21194013 DOI: 10.1208/s12249-010-9564-z] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Accepted: 11/30/2010] [Indexed: 02/08/2023] Open
Abstract
Colon cancer is the fourth most common cancer globally with 639,000 deaths reported annually. Typical chemotherapy is provided by injection route to reduce tumor growth and metastasis. Recent research investigates the oral delivery profiles of chemotherapeutic agents. In comparison to injection, oral administration of drugs in the form of a colon-specific delivery system is expected to increase drug bioavailability at target site, reduce drug dose and systemic adverse effects. Pectin is suitable for use as colon-specific drug delivery vehicle as it is selectively digested by colonic microflora to release drug with minimal degradation in upper gastrointestinal tract. The present review examines the physicochemical attributes of formulation needed to retard drug release of pectin matrix prior to its arrival at colon, and evaluate the therapeutic value of pectin matrix in association with colon cancer. The review suggests that multi-particulate calcium pectinate matrix is an ideal carrier to orally deliver drugs for site-specific treatment of colon cancer as (1) crosslinking of pectin by calcium ions in a matrix negates drug release in upper gastrointestinal tract, (2) multi-particulate carrier has a slower transit and a higher contact time for drug action in colon than single-unit dosage form, and (3) both pectin and calcium have an indication to reduce the severity of colon cancer from the implication of diet and molecular biology studies. Pectin matrix demonstrates dual advantages as drug carrier and therapeutic for use in treatment of colon cancer.
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Design and evaluation of matrix base with sigmoidal release profile for colon-specific delivery using a combination of Eudragit and non-ionic cellulose ether polymers. Drug Deliv Transl Res 2011; 1:132-46. [DOI: 10.1007/s13346-011-0016-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Caillard R, Mateescu M, Subirade M. Maillard-Type Cross-Linked Soy Protein Hydrogels as Devices for the Release of Ionic Compounds: An In Vitro Study. Food Res Int 2010. [DOI: 10.1016/j.foodres.2010.08.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Caillard R, Petit A, Subirade M. Design and evaluation of succinylated soy protein tablets as delayed drug delivery systems. Int J Biol Macromol 2009; 45:414-20. [DOI: 10.1016/j.ijbiomac.2009.06.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2009] [Revised: 06/24/2009] [Accepted: 06/24/2009] [Indexed: 10/20/2022]
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39
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Wei X, Chen Z, Lu Y, Xu H, Chen G, Wu W. Physicochemical characterization of a pectin/calcium matrix containing a large fraction of calcium chloride: Implications for sigmoidal release characteristics. J Appl Polym Sci 2009. [DOI: 10.1002/app.30306] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rutnakornpituk M, Meerod S, Boontha B, Wichai U. Magnetic core-bilayer shell nanoparticle: A novel vehicle for entrapmentof poorly water-soluble drugs. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.06.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wong TW, Wahab S, Anthony Y. Effects of Microwave on Drug Release Property of Poly(Methyl Vinyl Ether-co-Maleic Acid) Matrix. Drug Dev Ind Pharm 2008; 33:737-46. [PMID: 17654022 DOI: 10.1080/03639040601015513] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The drug release behavior of beads made of poly(methyl vinyl ether-co-maleic acid) was investigated with respect to the influence of microwave irradiation. The beads were prepared by an extrusion method with sodium diclofenac as a model water-soluble drug. The beads were subjected to microwave irradiation at 80 W for 5 and 20 min, and at 300 W for 1 min 20 s and 5 min 20 s. The profiles of drug dissolution, drug content, drug-polymer interaction, and polymer-polymer interaction were determined by using dissolution testing, drug content assay, differential scanning calorimetry, and Fourier transform infra-red spectroscopy. Keeping the level of supplied irradiation energy identical, treatment of beads by microwave at varying intensities of irradiation did not bring about similar drug release profiles. The extent and rate of drug released from beads were markedly enhanced through treating the samples by microwave at 80 W as a result of loss of polymer-polymer interaction via the (CH(2))(n) moiety, but decreased upon treating the beads by microwave at 300 W following polymer-polymer interaction via the O-H, COOH, and COO(-) moieties as well as drug-polymer interaction via the N-H, O-H, COO(-), and C-O moieties. The beads treated by microwave at 300 W exhibited a higher level of drug release retardation capacity than those that were treated by microwave at 80 W in spite of polymer-polymer interaction via the (CH(2))(n) moiety was similarly reduced in the matrix. The mechanism of drug release of both microwave-treated and untreated beads tended to follow zero order kinetics. The drug release was markedly governed by the state of polymer relaxation of the matrix and was in turn affected by the state of polymer-polymer and/or drug-polymer interaction in beads.
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Affiliation(s)
- Tin Wui Wong
- Particle Design Research Group, Non-Destructive Biomedical and Pharmaceutical Research Centre, Faculty of Pharmacy, Universiti Teknologi MARA, Shah Alam, Selangor, Malaysia.
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Wu B, Chen Z, Wei X, Sun N, Lu Y, Wu W. Biphasic release of indomethacin from HPMC/pectin/calcium matrix tablet: I. Characterization and mechanistic study. Eur J Pharm Biopharm 2007; 67:707-14. [PMID: 17540549 DOI: 10.1016/j.ejpb.2007.04.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2007] [Revised: 04/23/2007] [Accepted: 04/24/2007] [Indexed: 11/24/2022]
Abstract
Calcium-induced crosslinking of pectin acts as the dominating factor controlling drug release from pectin-based matrices. The same interaction was employed to modify indomethacin release from HPMC/pectin/calcium matrix in this study. The aim was to characterize the release profiles, and to study the formulation variables and the underlying mechanisms. The matrix tablet was made up of pectin HM 70, calcium chloride and HPMC K4M, and prepared by the wet granulation method. In vitro release was performed in water and characterized by the power law. Matrix erosion was evaluated by studying the weight loss and pectin release. Biphasic release of indomethacin from the HPMC/pectin/calcium matrix tablet was observed, and extraordinary power law exponent n values of over 1.0 were observed. Increase in calcium amount led to more significant retardation on drug release. The two power law parameters, n and K, correlated to the amount of calcium in the matrix. A lag time of over 4 h can be achieved at HPMC/pectin/calcium chloride amount of 100 mg/100 mg/100 mg. Both matrix weight loss and pectin release were linearly correlated to indomethacin release, indicating erosion-controlled drug release mechanisms. The hybrid matrix showed retarded erosion and hydration rate, which served as the basis for retarded indomethacin release. It is concluded that the pectin/calcium interaction can be employed to modify drug release from HPMC/pectin/calcium matrix tablet with biphasic release patterns for potential timed or site-specific drug delivery.
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Affiliation(s)
- Baojian Wu
- Department of Pharmaceutics, School of Pharmacy, Fudan University, Shanghai, PR China
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Biphasic release of indomethacin from HPMC/pectin/calcium matrix tablet: II. Influencing variables, stability and pharmacokinetics in dogs. Eur J Pharm Biopharm 2007; 69:294-302. [PMID: 17988844 DOI: 10.1016/j.ejpb.2007.10.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2007] [Revised: 10/01/2007] [Accepted: 10/01/2007] [Indexed: 11/22/2022]
Abstract
The pectin/calcium interaction, which is the basis for biphasic release of indomethacin from the HPMC/pectin/calcium chloride matrix tablet, is susceptible to influence of a variety of variables that is supposed to be encountered by the oral route. In this study, the effect of influencing variables on biphasic release characteristics, the stability and the pharmacokinetics of the hybrid matrix tablet were investigated. An increasing tendency of the overall release rate was observed from pH 1.2 to 7.4. The power law correlation n values increased with pH, while the release lag time or 10% release time (T0.1) decreased at pH 6.8 and 7.4. Ionic strength in the release media also influenced the biphasic release significantly at sodium chloride levels of over 0.5%. Obvious increase in overall release rate was observed at sodium chloride level of 0.9% with an n value of 1.20 and a T0.1 of 3.4h. At sodium chloride levels of over 2%, the pectin/calcium interaction was disrupted resulting in very fast release of indomethacin. Release in gradient pH media was similar to that in pH 6.8 citrate buffer. When pectinase (Pectinex Ultra SP-L) was added into the release medium in 22.2 pg/ml or over, obvious triggering on drug release was observed. The stress testing showed increased release at extreme relative humidity of 92.5%. Both accelerated testing for 6m and long-term testing for 12 m affirmed fine stability, especially in release characteristics. Pharmacokinetic study in dogs gave Tmax/Cmax of 4h/604 ng/ml and 3h/1662 ng/ml for HPMC/pectin/calcium and HPMC/pectin tablet, respectively. The plasma indomethacin level of the calcium-containing tablet was maintained at a much lower level for 3h with a MRT of 7.13 h, longer than 3.97 and 5.61 h for indomethacin crude drug and HPMC/pectin tablet, confirming delayed absorption. The AUC of the HPMC/pectin/calcium tablet was lower than that of the HPMC/pectin tablet and indomethacin crude drug showing incomplete absorption. It is concluded that the HPMC/pectin/calcium matrix tablet is potentially useful for colon-specific drug delivery.
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