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Kojima H, Yoshida T, Kondo H, Sako K. Drug Extended-Release System Utilizing Micelle Formation of Highly Water-Soluble Drugs and a Counter Polymer. Mol Pharm 2023; 20:6056-6065. [PMID: 37955875 DOI: 10.1021/acs.molpharmaceut.3c00377] [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] [Indexed: 11/14/2023]
Abstract
The objective of this study is to clarify the mechanism of extending release of highly water-soluble drugs via counter polymer (CP) utilization in poly(ethylene oxide) (PEO)/polyethylene glycol (PEG) matrix tablets. Carbomer, poly(acrylic acid), was used as a CP, which has the opposite charges to the drugs. The in vitro release of several highly water-soluble drugs from PEO/PEG tablet with or without CP were tested, the relationship between the sustained release effect by a CP (SRE) and the physicochemical properties of the drugs was investigated. The results demonstrated that the utilization of CP can extend the release of some highly water-soluble drugs by effectively controlling the drug diffusion through matrices. On the other hand, the effectiveness of CP was different depending on the drugs applied. There were not statistical correlations between SRE and physicochemical properties such as solubility, molecular weight, and charge intensity of the drugs, while a micelle forming property of the drugs played an important role in SRE by CP. It was concluded that CP, Carbomer, having negative charges could effectively interact with opposite charges on the surface of stable drug micelles, which could result in a significant decrease in drug diffusion leading to extended drug release. It is considered that the system utilizing CP is a promising approach to achieve extended release of highly water-soluble drugs with a reasonable tablet size, especially in the case of large drug loading.
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Affiliation(s)
- Hiroyuki Kojima
- Pharmaceutical Research and Technology Laboratories, Astellas Pharma Inc. 180 Ozumi, Yaizu 425-0072, Shizuoka, Japan
| | - Takayuki Yoshida
- Pharmaceutical Research and Technology Laboratories, Astellas Pharma Inc. 180 Ozumi, Yaizu 425-0072, Shizuoka, Japan
| | - Hiromu Kondo
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku 422-8526, Shizuoka, Japan
| | - Kazuhiro Sako
- Pharmaceutical Research and Technology Laboratories, Astellas Pharma Inc. 180 Ozumi, Yaizu 425-0072, Shizuoka, Japan
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2
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Elsaady SA, Aboushelib MN, Al-Wakeel E, Badawi MF. A novel intra-tumoral drug delivery carrier for treatment of oral squamous cell carcinoma. Sci Rep 2023; 13:11984. [PMID: 37491569 PMCID: PMC10368636 DOI: 10.1038/s41598-023-38230-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 07/05/2023] [Indexed: 07/27/2023] Open
Abstract
The treatment of oral squamous cell carcinoma (OSCC) includes systemic chemotherapy and is associated with aggressive side effects on patients. This study evaluated a new intra-tumor-targeted drug delivery method for the treatment of OSCC induced on the dorsum of the tongue in white mice. The induced tumors were examined by needle biopsy. A targeted anticancer drug (Cetuximab) and [Cisplatin and 5 Fluorouracil (5-FU)] chemotherapeutic agents were loaded on polyethylene glycol-polylactide-polyethylene glycol (PEG-PLA-PEG) nanoparticles (NPs) designed for intralesional injection while systemic administration was used as control. Fourier transform infrared spectroscopy (FTIR) was performed to study NP chemical structure, a drug release profile was conducted to study release kinetics, and histopathological evaluation was performed before and after treatment to evaluate tissue reactions (n-28, ά = 0.05). The drug release profile was characteristic of the chemotherapeutic agent showing early quick ascend followed by sustained slow release. FTIR peaks identified the polymeric structure of the drug nano-carrier. Histopathologic examination of chemically induced OSCC revealed different grades ranging from non-invasive to invasive stages of OSCC. Intra-tumoral test group revealed significant remission of observed cancer grade compared to the systemically administered group (X2 = 12.63, P < 0.001). Finally, using synthesized PEG-PLA-PEG NPs for intralesional injection is a promising route for the treatment of OSCC.
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Affiliation(s)
- Shimaa A Elsaady
- Dental Biomaterials, Faculty of Dentistry, Zagazig University, Mansoura, Egypt.
| | | | - Essam Al-Wakeel
- Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Manal F Badawi
- Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
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3
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Luo J, Yang L, Chueng STD, Conley B, Rathnam C, Lee KB. Advanced Drug Delivery Modulation via Hybrid Nanofibers Enhances Stem Cell Differentiation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:34488-34501. [PMID: 35862271 PMCID: PMC9357201 DOI: 10.1021/acsami.2c10288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Seamlessly integrating soluble factors onto biomedical scaffolds with a precisely manufactured topography for efficient cell control remains elusive since many scaffold fabrication techniques degrade payloads. Surface adsorption of payloads onto synthesized nanoscaffolds retains bioactivity by removing exposure to harsh processing conditions at the expense of inefficient drug loading and uncontrolled release. Herein, we present a nanomaterial composite scaffold paradigm to improve physicochemical surface adsorption pharmacokinetics. As a proof of concept, we integrated graphene oxide (GO) and manganese dioxide (MnO2) nanosheets onto nanofibers to increase loading capacity and tune drug release. Non-degradable GO enhances payload retention, while biodegradable MnO2 enables cell-responsive drug release. To demonstrate the utility of this hybrid nanomaterial scaffold paradigm for tissue engineering, we adsorbed payloads ranging from small molecules to proteins onto the scaffold to induce myogenesis and osteogenesis for multiple stem cell lines. Scaffolds with adsorbed payloads enabled more efficient differentiation than media supplementation using equivalent quantities of differentiation factors. We attribute this increased efficacy to a reverse uptake mechanism whereby payloads are localized around seeded cells, increasing delivery efficiency for guiding differentiation. Additionally, we demonstrate spatial control over cells since differentiation factors are delivered locally through the scaffold. When co-culturing scaffolds with and without adsorbed payloads, only cells seeded on payload-adsorbed scaffolds underwent differentiation. With this modular technology being capable of enhancing multiple differentiation fates for specific cell lines, this technology provides a promising alternative for current tissue engineering scaffolds.
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Affiliation(s)
- Jeffrey Luo
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Letao Yang
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Sy-Tsong Dean Chueng
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Brian Conley
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Christopher Rathnam
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
| | - Ki-Bum Lee
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, NJ 08854, USA
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4
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Asare-Addo K, Totea AM, Nokhodchi A. Drug release from magnesium aluminium silicate-polyethylene oxide (PEO) nanocomposite matrices: An investigation using the USP III apparatus. Eur J Pharm Sci 2020; 153:105474. [PMID: 32702388 DOI: 10.1016/j.ejps.2020.105474] [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: 05/20/2020] [Revised: 07/14/2020] [Accepted: 07/18/2020] [Indexed: 10/23/2022]
Abstract
This work investigated the use of the USP III apparatus in discriminating simulated fed and fasted conditions as well as ionic strength on veegum-polyethylene (PEO) (called clay-PEO matrices hereafter) matrices. The successful formulations were characterised using differential scanning calorimetry (DSC) and evaluated for their physical properties. Isothermal calorimetry (ITC) was used to evaluate the thermodynamics of the complexation processes. The effect of agitation sequences on the matrices as evaluated from the USP III suggested an increase in polymer content to significantly decrease the burst release experienced using diltiazem hydrochloride (DILT) as a model cationic drug. The manufacturing methods showed superior performance in relation to a decrease in burst release over the physical manufactured counterparts. The clay-PEO matrices also showed robustness (no matrix failure) in up to 0.2 M ionic strength solutions mimicking the upper limit experienced in the GI tract. ITC results revealed that the binding between DILT and PEO was enthalpy and entropy-driven. Furthermore, the binding between veegum and DILT in the presence of PEO was shown to be enthalpy-driven and entropically unfavourable, which was also the case for the binding between veegum and PEO thus giving insights to how the matrices were performing on a molecular level.
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Affiliation(s)
- Kofi Asare-Addo
- University of Huddersfield, Department of Pharmacy, Queensgate, Huddersfield, HD1 3DH.
| | - Ana-Maria Totea
- University of Huddersfield, Department of Pharmacy, Queensgate, Huddersfield, HD1 3DH
| | - Ali Nokhodchi
- Pharmaceutics Research Laboratory, School of Life Sciences, University of Sussex, Brighton, BN1 9QJ, UK.
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5
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Totea AM, Dorin I, Laity PR, Sabin J, Conway BR, Waters L, Asare-Addo K. A molecular understanding of magnesium aluminium silicate - drug, drug - polymer, magnesium aluminium silicate - polymer nanocomposite complex interactions in modulating drug release: Towards zero order release. Eur J Pharm Biopharm 2020; 154:270-282. [PMID: 32717386 DOI: 10.1016/j.ejpb.2020.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/06/2020] [Accepted: 07/22/2020] [Indexed: 10/23/2022]
Abstract
This study reports the use of ITC in understanding the thermodynamics occurring for a controlled release system in which complexation has been exploited. In this study, a model drug, propranolol hydrochloride (PPN) was complexed with magnesium aluminium silicate (MAS) and these complexes were used in combination with polyethylene oxide (PEO) as a hydrophilic carrier at various concentrations to sustain the release of PPN. DSC, XRPD, ATR-FTIR and SEM/EDX were successfully used in characterising the produced complexes. 2D- SAXS data patterns for MAS and the produced complexes were shown to be symmetric and circular with the particles showing no preferred orientation at the nanometre scale. ITC studies showed differences between PPN adsorption onto MAS compared with PPN adsorption onto a MAS-PEO mixture. At both temperatures studied the binding affinity Ka was greater for the titration of PPN into the MAS-PEO mixture (5.37E + 04 ± 7.54E + 03 M at 25 °C and 8.63E + 04 ± 6.11E + 03 M at 37 °C), compared to the affinity obtained upon binding between PPN and MAS as previously reported suggesting a stronger binding with implications for the dissolution process. MAS-PPN complexes with the PEO polymer compacts displayed desired manufacturing and formulation properties for a formulator including, reduced plastic recovery therefore potentially reducing the risk of cracking/splitting and on tooling wear, controlled release of PPN at a significantly low (5%) polymer level as well as a zero-order release profile (case II transport) using up to 50% polymer level.
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Affiliation(s)
- A M Totea
- School of Applied Sciences, Department of Pharmacy, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - I Dorin
- Biomolecular Formulation and Characterization Sciences, UCB, Slough SL3WE, UK
| | - P R Laity
- Department of Materials Science and Engineering, University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
| | - Juan Sabin
- AFFINImeter, Edificio Emprendia, Campus Vida, Santiago de Compostela, Spain
| | - B R Conway
- School of Applied Sciences, Department of Pharmacy, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - L Waters
- School of Applied Sciences, Department of Pharmacy, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK
| | - K Asare-Addo
- School of Applied Sciences, Department of Pharmacy, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
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6
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Vanza JD, Patel RB, Dave RR, Patel MR. Polyethylene oxide and its controlled release properties in hydrophilic matrix tablets for oral administration. Pharm Dev Technol 2020; 25:1169-1187. [PMID: 32772604 DOI: 10.1080/10837450.2020.1808015] [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] [Indexed: 10/23/2022]
Abstract
Polymers are excipients that modify the rate of drug release from pharmaceutical dosage forms. Hydrophilic polymer-based controlled drug delivery system is more advantageous as compared to the conventional delivery system as it reduces the dosing frequency, improves therapeutic efficacy, reduces side-effects, and probably enhances patient compliance. Polyethylene oxide (PEO), a nonionic hydrophilic polymer, is one of the most widely used polymers for extending the drug release. This review mainly focuses on the PEO marketed by, but not limited to, The Dow Chemical Company under the trade name of POLYOXTM. It is commercially available polyethylene oxide polymer existing in various molecular weight and viscosity grades depending upon the application. This study essentially discusses chemistry, physicochemical properties, and the impact of formulation and processing variables on the release of drug from hydrophilic PEO matrix tablets. Moreover, it also summarizes the stability, patents, and regulatory perspectives of POLYOX that can further influence the future developments of controlled release dosage forms.
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Affiliation(s)
- Jigar D Vanza
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology (CHARUSAT), Changa, India
| | - Rashmin B Patel
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology (CHARUSAT), Changa, India
| | - Richa R Dave
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology (CHARUSAT), Changa, India
| | - Mrunali R Patel
- Ramanbhai Patel College of Pharmacy, Charotar University of Science and Technology (CHARUSAT), Changa, India
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7
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Gelatin content governs hydration induced structural changes in silica-gelatin hybrid aerogels - Implications in drug delivery. Acta Biomater 2020; 105:131-145. [PMID: 31953196 DOI: 10.1016/j.actbio.2020.01.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 12/22/2019] [Accepted: 01/10/2020] [Indexed: 12/26/2022]
Abstract
Silica-gelatin hybrid aerogels of varying gelatin content (from 4 wt.% to 24 wt.%) can be conveniently impregnated with hydrophobic active agents (e.g. ibuprofen, ketoprofen) in supercritical CO2 and used as drug delivery systems. Contrast variation neutron scattering (SANS) experiments show the molecular level hybridization of the silica and the gelatin components of the aerogel carriers. The active agents are amorphous, and homogeneously dispersed in these porous, hybrid matrices. Importantly, both fast and retarded drug release can be achieved with silica-gelatin hybrid aerogels, and the kinetics of drug release is governed by the gelatin content of the carrier. In this paper, for the first time, a molecular level explanation is given for the strong correlation between the composition and the functionality of a family of aerogel based drug delivery systems. Characterization of the wet aerogels by SANS and by NMR diffusiometry, cryoporometry and relaxometry revealed that the different hydration mechanisms of the aerogels are responsible for the broad spectrum of release kinetics. Low-gelatin (4-11 wt.%) aerogels retain their open-porous structure in water, thus rapid matrix erosion dictates fast drug release from these carriers. In contrast to this, wet aerogels of high gelatin content (18-24 wt.%) show well pronounced hydrogel-like characteristics, and a wide gradual transition zone forms in the solid-liquid interface. The extensive swelling of the high-gelatin hybrid backbone results in the collapse of the open porous structure, that limits mass transport towards the release medium, resulting in slower, diffusion controlled drug release. STATEMENT OF SIGNIFICANCE: Developing new drug delivery systems is a key aspect of pharmaceutical research. Supercritically dried mesoporous aerogels are ideal carriers for small molecular weight drugs due to their open porous structures and large specific surface areas. Hybrid silica-gelatin aerogels can display both fast and retarded drug release properties based on the gelatin contents of their backbones. The structural characterization of the aerogels by SANS and by NMR diffusiometry, cryoporometry and relaxometry revealed that the different hydration mechanisms of the hybrid backbones are responsible for the broad spectrum of release kinetics. The molecular level understanding of the functionality of these hybrid inorganic-biopolymer drug delivery systems facilitates the realization of quality-by-design in this research field.
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8
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Han P, Chung SH, Chang CH, Manthiram A. Bifunctional Binder with Nucleophilic Lithium Polysulfide Immobilization Ability for High-Loading, High-Thickness Cathodes in Lithium-Sulfur Batteries. ACS APPLIED MATERIALS & INTERFACES 2019; 11:17393-17399. [PMID: 31012569 DOI: 10.1021/acsami.9b02399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Lithium-sulfur batteries remain a promising next-generation renewable energy storage device due to their high theoretical energy density over the current commercial lithium-ion battery technology. However, to have any practical viability toward reaching the theoretical value, high-loading cathodes with sufficient sulfur content and specifically the effect of nonconductive binders must be investigated. We consider the limitations of conventional binders for high-loading, high-thickness cathodes by integrating a bifunctional binder with a linear polyethylene chain and maleate-capped ends. The linear polymer allows for flexibility within the high-loading cathode whereas the maleate ends improve the polysulfide trapping ability with carbon-sulfur binding. With the strong polysulfide immobilization ability due to the nucleophilic binding, the binder achieves high sulfur loadings of 12 mg cm-2 with a high sulfur content of 80 wt %. The work serves as a proof of concept for exploring the incorporation of polymeric materials into sulfur cathodes to realize practical viability.
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Affiliation(s)
- Pauline Han
- Materials Science and Engineering Program & Texas Materials Institute , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Sheng-Heng Chung
- Materials Science and Engineering Program & Texas Materials Institute , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Chi-Hao Chang
- Materials Science and Engineering Program & Texas Materials Institute , The University of Texas at Austin , Austin , Texas 78712 , United States
| | - Arumugam Manthiram
- Materials Science and Engineering Program & Texas Materials Institute , The University of Texas at Austin , Austin , Texas 78712 , United States
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9
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Kamal H, Abd-Elrahim F, Lotfy S. Characterization and some properties of cellulose acetate-co-polyethylene oxide blends prepared by the use of gamma irradiation. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2014.01.003] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- H. Kamal
- National Center for Radiation Research and Technology, Atomic Energy Authority, P.O. Box 29, Nasr City, Cairo, 11731, Egypt
| | | | - S. Lotfy
- National Center for Radiation Research and Technology, Atomic Energy Authority, P.O. Box 29, Nasr City, Cairo, 11731, Egypt
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10
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Zhang X, Gu X, Wang X, Wang H, Mao S. Tunable and sustained-release characteristics of venlafaxine hydrochloride from chitosan-carbomer matrix tablets based on in situ formed polyelectrolyte complex film coating. Asian J Pharm Sci 2018; 13:566-574. [PMID: 32104430 PMCID: PMC7032170 DOI: 10.1016/j.ajps.2018.01.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 01/09/2018] [Indexed: 11/28/2022] Open
Abstract
The objective of this study is to design sustained-release tablets using matrix technology, which can well control the release of highly water-soluble drugs with good system robustness and simple preparation process. Taking venlafaxine hydrochloride (VH) as a drug model, the feasibility of using chitosan (CS), carbomer (CBM) combination system to achieve this goal was studied. Formulation and process variables influencing drug release from CS-CBM matrix tablets were investigated. It was found that CS-CBM combination system weakened the potential influence of CS, CBM material properties and gastric emptying time on drug release profile. Demonstrated by direct observation, differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR), in situ self-assembled polyelectrolyte complex (PEC) film was formed on the tablet surface during gastrointestinal tract transition, which contributed to the tunable and robust control of drug release. The sustained drug release behavior was further demonstrated in vivo in Beagle dogs, with level A in vitro and in vivo correlation (IVIVC) established successfully. In conclusion, CS-CBM matrix tablets are promising system to tune and control the release of highly water-soluble drugs with good system robustness.
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Affiliation(s)
- Xiaofei Zhang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiangqin Gu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaodan Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Huimin Wang
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shirui Mao
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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11
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Esim O, Savaser A, Ozkan C, Bayrak Z, Tas C, Ozkan Y. Effect of polymer type on characteristics of buccal tablets using factorial design. Saudi Pharm J 2018; 26:53-63. [PMID: 29379333 PMCID: PMC5783814 DOI: 10.1016/j.jsps.2017.10.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 10/24/2017] [Indexed: 11/22/2022] Open
Abstract
A two factor three level factorial design was used to investigate the effects of carbopol and cationic hydrophilic polymers which have a common use in buccal drug formulations. Statistical models with interaction terms were derived to evaluate influence of carbopol (X1) and chitosan (X2) on tablet disintegration (Y1) and dissolution (Y2), mechanical properties (Y3), swelling (Y4). Tablet disintegration studies were carried out using two different pH environments within buccal region pH limits and also two different commonly used dissolution methods for buccal tablets were also investigated to compare the effect of polymer type on dissolution. Polymer type and ratio affect the characteristics of the buccal tablets due to their different physicochemical behavior at buccal pH. Also significant variances between dissolution profiles for buccal tablets, using either USP Paddle or flow through cell methods were found. These results indicate that both polymer type and ratio as well as combination of them effects the drug behavior in different ways.
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Affiliation(s)
- O. Esim
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - A. Savaser
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - C.K. Ozkan
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - Z. Bayrak
- Ministry of National Defense, Ankara, Turkey
| | - C. Tas
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
| | - Y. Ozkan
- University of Health Sciences, Gulhane Campus, Department of Pharmaceutical Sciences, Etlik, Ankara, Turkey
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12
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Mithu SH, Haque SN, Chowdhry BZ, Nokhodchi A, Maniruzzaman M. RETRACTED: Evaluation of the surface chemistry and drug-polymer interaction of semi-crystalline micro-particles for the development of controlled release formulations. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 76:559-567. [DOI: 10.1016/j.msec.2017.03.154] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 03/12/2017] [Accepted: 03/14/2017] [Indexed: 12/11/2022]
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13
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Li J, Luo C, Zhang D, Li M, Fu Q, He Z. Formulation and development of ternary hybrid matrix tablets of diltiazem hydrochloride. POWDER TECHNOL 2016. [DOI: 10.1016/j.powtec.2016.02.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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14
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Development of pH-sensitive self-nanoemulsifying drug delivery systems for acid-labile lipophilic drugs. Chem Phys Lipids 2016; 196:81-8. [DOI: 10.1016/j.chemphyslip.2016.02.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/18/2016] [Accepted: 02/22/2016] [Indexed: 11/18/2022]
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15
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Yang F, Su Y, Zhu L, Brown CD, Rosen LA, Rosenberg KJ. Rheological and solid-state NMR assessments of copovidone/clotrimazole model solid dispersions. Int J Pharm 2016; 500:20-31. [DOI: 10.1016/j.ijpharm.2016.01.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/10/2016] [Accepted: 01/14/2016] [Indexed: 01/09/2023]
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16
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Maniruzzaman M, Snowden MJ, Bradely MS, Douroumis D. Studies of intermolecular interactions in solid dispersions using advanced surface chemical analysis. RSC Adv 2015. [DOI: 10.1039/c5ra13176f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of this study is to utilise an advanced surface chemical analysis based on X-ray photoelectron spectroscopy (XPS) to determine and characterise drug/polymer interactions in solid dispersions manufactured via hot melt extrusion (HME).
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Affiliation(s)
- M. Maniruzzaman
- Faculty of Engineering and Science
- University of Greenwich
- Chatham Maritime
- UK
| | - Martin J. Snowden
- Faculty of Engineering and Science
- University of Greenwich
- Chatham Maritime
- UK
| | - Mike S. Bradely
- Faculty of Engineering and Science
- University of Greenwich
- Chatham Maritime
- UK
| | - D. Douroumis
- Faculty of Engineering and Science
- University of Greenwich
- Chatham Maritime
- UK
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17
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Bigucci F, Abruzzo A, Vitali B, Saladini B, Cerchiara T, Gallucci MC, Luppi B. Vaginal inserts based on chitosan and carboxymethylcellulose complexes for local delivery of chlorhexidine: Preparation, characterization and antimicrobial activity. Int J Pharm 2015; 478:456-63. [DOI: 10.1016/j.ijpharm.2014.12.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/01/2014] [Accepted: 12/05/2014] [Indexed: 10/24/2022]
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18
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Sharma OP, Shah MV, Parikh DC, Mehta TA. Formulation optimization of gastroretentive drug delivery system for allopurinol using experimental design. Expert Opin Drug Deliv 2014; 12:513-24. [DOI: 10.1517/17425247.2014.944861] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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19
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Vaishya RD, Gokulgandhi M, Patel S, Minocha M, Mitra AK. Novel dexamethasone-loaded nanomicelles for the intermediate and posterior segment uveitis. AAPS PharmSciTech 2014; 15:1238-51. [PMID: 24895075 DOI: 10.1208/s12249-014-0100-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2013] [Accepted: 02/23/2014] [Indexed: 11/30/2022] Open
Abstract
Development and characterization of dexamethasone (DEX)-encapsulated polymeric nanomicelles have been reported. A low molecular weight di-block copolymer was synthesized and characterized for its structure, molecular weights, critical micelle concentration (CMC), and cytotoxicity in ocular cells. In order to delineate the effects of drug-polymer interactions on drug solubilization in micelle core, a response surface methodology was generated with the help of SAS 9.02 (exploratory model). The method for preparing micelle was modified based on the results obtained from exploratory model. The formulation was optimized by response surface methodology (optimization model) to achieve DEX solubility of above 1 mg/mL. The optimized formulation was characterized for DEX solubility, nanomicelle size, polydispersity index, surface morphology, in vitro transport across conjunctival cell line, and ex vivo transport across excised rabbit sclera. Nanomicelles exhibited average sizes in range of 25-30 nm with unimodel size distribution and low polydispersity of 0.125. Nanomicelles increased DEX permeability by 2 times across conjunctival cell line and by 2.5 times across the excised rabbit sclera as compared to DEX suspension. A design of experiment (DOE) strategy was successfully applied to understand the effects of drug-polymer interaction on drug solubility. DOE was also employed to achieve optimal formulation with high DEX solubility. Nanomicellar formulation significantly enhanced DEX permeability across the excised rabbit sclera. Therefore, nanomicellar formulation may provide therapeutic levels in the back of the eye following topical administration.
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De Robertis S, Bonferoni MC, Elviri L, Sandri G, Caramella C, Bettini R. Advances in oral controlled drug delivery: the role of drug-polymer and interpolymer non-covalent interactions. Expert Opin Drug Deliv 2014; 12:441-53. [PMID: 25267345 DOI: 10.1517/17425247.2015.966685] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION After more than four decades of intense research, oral controlled drug delivery systems (DDSs) still represent a topic of major interest for pharmaceutical scientist and formulators. This can be explained in part by considering the economic value of oral DDSs whose market accounts for more than half of the overall drug delivery market. Polymeric systems based on drug-polymer non-covalent interaction represent a limited, but growing part of the field. Despite the large amount of literature and published reviews covering specific aspects, there is still need for a review of the relevant literature providing a general picture of the topic. AREAS COVERED The present review aims at presenting the latest findings in drug-polymer and interpolymer non-covalent interactions in oral controlled delivery while providing a specific perspective and a critical point of view, particularly on the tools and methods used for the study of these DDSs. Four main sections are considered: i) ionic interactions between drugs and polymers; ii) interpolymer complexes; iii) hydrogen bond; and iv) hydrophobic interactions. EXPERT OPINION The largest part of the scientific literature deals with systems based on drug-polymer ionic interactions while hydrogen bonding and hydrophobic interaction though, very promising, are more difficult to exploit, and therefore less studied. An accurate and exhaustive representation of the specific role of the chemical functions in establishing predictable interactions between drug and polymers is still required.
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Affiliation(s)
- Simona De Robertis
- PhD Student, University of Parma, Department of Pharmacy , Parma , Italy
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Bardajee GR, Hooshyar Z. One-pot synthesis of biocompatible superparamagnetic iron oxide nanoparticles/hydrogel based on salep: characterization and drug delivery. Carbohydr Polym 2013; 101:741-51. [PMID: 24299834 DOI: 10.1016/j.carbpol.2013.10.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 08/29/2013] [Accepted: 10/09/2013] [Indexed: 11/30/2022]
Abstract
This work describes synthesis of biocompatible magnetic iron oxide nanoparticles/hydrogel based on salep (MION-salep hydrogel) by a facile one-pot strategy. The prepared sample was characterized by techniques like scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDAX), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA), and vibrating sample magnetometer (VSM). The obtained MION had an 8 nm diameter with a narrow size distribution and was superparamagnetic with large saturation magnetization at room temperature. The most attractive feature of the obtained sample was its swelling properties under external magnetic field (EMF), different temperatures, and pHs. Moreover, MION-salep hydrogel showed ability to deferasirox release at pH=7 with non-Fickian diffusion mechanism. An in vitro cytotoxicity study implied that the as-synthesized sample is nontoxic.
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Li L, Wang L, Shao Y, Tian Y, Li C, Li Y, Mao S. Elucidation of release characteristics of highly soluble drug trimetazidine hydrochloride from chitosan-carrageenan matrix tablets. J Pharm Sci 2013; 102:2644-54. [PMID: 23754467 DOI: 10.1002/jps.23632] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 04/28/2013] [Accepted: 05/16/2013] [Indexed: 11/11/2022]
Abstract
The aim of this study was to better understand the underlying drug release characteristics from matrix tablets based on the combination of chitosan (CS) and different types of carrageenans [kappa (κ)-CG, iota (ι)-CG, and lambda (λ)-CG]. Highly soluble trimetazidine hydrochloride (TH) was used as a model drug. First, characteristics of drug release from different formulations were investigated, and then in situ complexation capacity of CG with TH and CS was studied by differential scanning calorimetry and Fourier transform infrared spectroscopy. Erosion and swelling of matrix were also characterized to better understand the drug-release mechanisms. Effects of pH and ionic strength on drug release were also studied. It was found that not only ι-CG and λ-CG could reduce the burst release of TH by the effect of TH-CG interaction, CS-ι-CG- and CS-λ-CG-based polyelectrolyte film could further modify the controlled-release behavior, but not CS-κ-CG. High pH and high ionic strength resulted in faster drug release from CS-κ-CG- and CS-ι-CG-based matrix, but drug release from CS-λ-CG-based matrix was less sensitive to pH and ionic strength. In conclusion, CS-λ-CG-based matrix tablets are quite promising as controlled-release drug carrier based on multiple mechanisms.
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Affiliation(s)
- Liang Li
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
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