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Mir TA, Ganie SA, Ali A, Assiri MA, Imtiyaz K, Rizvi MMA, Mazumdar N, Rather LJ. Gamma-Irradiated Gum Arabic Grafted with 2-Hydroxyethyl Methacrylate: A Novel Superabsorbent Polymer for Controlled Folic Acid Release. Macromol Rapid Commun 2024:e2400258. [PMID: 39018482 DOI: 10.1002/marc.202400258] [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: 04/20/2024] [Revised: 06/22/2024] [Indexed: 07/19/2024]
Abstract
This study explores the synthesis and characterization of superabsorbent hydrogels derived from chemically modified gum Arabic, designed for controlled folic acid release. The synthesis involves a two-step process: carboxymethylation followed by grafting with 2-hydroxyethyl methacrylate via gamma irradiation. The resulting hydrogels exhibit enhanced mechanical strength and controlled diffusivity, essential for nutrient delivery systems. Key factors such as copolymer composition and irradiation dose are investigated, affecting the synthesis process. Systematic studies of swelling behaviors reveal that the hydrogel achieves a maximum swelling of 888.1% at 40 °C. The hydrogels are loaded with folic acid, and in vitro, sustained release profiles are examined under various pH conditions. The maximum release of 83.3% is observed after 24 h at pH 7.0, following a Korsmeyer-Peppas release mechanism. Different characterization techniques, confirm the successful synthesis and unique properties of the superabsorbent hydrogels. Rheological behavior analysis, scanning electron microscopy, and biocompatibility assessments provide a comprehensive understanding of the hydrogel structures. Gamma irradiation ensures a homogeneous network structure, crucial for optimal swelling behavior and mechanical properties. This research highlights the potential of eco-friendly biopolymer hydrogels in precise drug delivery applications, leveraging the safety and process control benefits of gamma irradiation.
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Affiliation(s)
- Tariq Ahmad Mir
- Material (Polymer) Research laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India
| | - Showkat Ali Ganie
- State Key Laboratory of Resource Insects, Chongqing Engineering Research Centre for Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing, 400715, P. R. China
| | - Akbar Ali
- Department of Chemistry, Kargil Campus, University of Ladakh, Kargil, 194103, India
| | - Mohammed A Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, 61413, Saudi Arabia
| | - Khalid Imtiyaz
- Genome Biology Lab, Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - M Moshahid Alam Rizvi
- Genome Biology Lab, Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Nasreen Mazumdar
- Material (Polymer) Research laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi, 110025, India
| | - Luqman Jameel Rather
- State Key Laboratory of Resource Insects, Chongqing Engineering Research Centre for Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Science, Southwest University, Chongqing, 400715, P. R. China
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Natori N, Shibano Y, Hiroki A, Taguchi M, Miyajima A, Yoshizawa K, Kawano Y, Hanawa T. Preparation and Evaluation of Hydrogel Film Containing Tramadol for Reduction of Peripheral Neuropathic Pain. J Pharm Sci 2023; 112:132-137. [PMID: 35605686 DOI: 10.1016/j.xphs.2022.05.013] [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: 02/24/2022] [Revised: 05/16/2022] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
Abstract
To develop and assess new dosage forms for the alternative to existing oral medication for peripheral neuropathy, a hydrogel film in the skin patch formation containing tramadol hydrochloride (TRA), a water-soluble drug used as an analgesic, was prepared and evaluated. A hydrogel film composed of 20%(w/w) hydroxypropyl methylcellulose (HPMC) irradiated with electron beams had high transparency and elasticity similar to commercially available wound dressings and soft tissues, suggesting that it is a suitable substrate for TRA. The inclusion of TRA was enabled by immersing the HPMC hydrogel film in TRA aqueous solution. The release and skin permeation of TRA from TRA-containing hydrogel films differed depending on the electron beam dose. Moreover, the analgesic effects in mice were confirmed in a dose-dependent manner. This study demonstrated the usefulness of a hydrogel film containing TRA as a new dosage form alternative to the existing oral medication for peripheral neuropathy.
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Affiliation(s)
- Nobuyuki Natori
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, 278-8510 Chiba, Japan
| | - Yuki Shibano
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, 278-8510 Chiba, Japan
| | - Akihiro Hiroki
- National Institutes for Quantum Science and Technology, 1233 Watanuki, Takasaki-shi, 370-1292 Gunma, Japan
| | - Mitsumasa Taguchi
- National Institutes for Quantum Science and Technology, 1233 Watanuki, Takasaki-shi, 370-1292 Gunma, Japan
| | - Atsushi Miyajima
- Faculty of Pharmaceutical Sciences, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose-shi, 204-8588 Tokyo, Japan
| | - Kazumi Yoshizawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, 278-8510 Chiba, Japan
| | - Yayoi Kawano
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, 278-8510 Chiba, Japan.
| | - Takehisa Hanawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda-shi, 278-8510 Chiba, Japan.
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Akbari E, Imani R, Shokrollahi P, Heidari Keshel S. Corneal sustained delivery of hyaluronic acid from nanofiber-containing ring-implanted contact lens. J Biomater Appl 2023; 37:992-1006. [PMID: 36564919 DOI: 10.1177/08853282221146390] [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: 12/25/2022]
Abstract
Dry eye syndrome, as a persist corneal epithelial defect (PED), is an inconvenient ocular disorder that is generally treated by high-dosage, conventional eye drops. Addressing low efficacy and rather restricted bioavailability of the conventional eye drops, drug-eluting contact lenses (CLs) are widely used as alternatives in ophthalmic drug delivery applications. In the present study, a nanofiber-containing ring implant poly (vinyl alcohol) (PVA) hydrogel is designed as a carrier for hyaluronic acid (HA) delivery. hyaluronic acid is physically encapsulated in a nanofiber-containing ring-shaped hydrogel with a 2 mm width that is implanted in the final CLs hydrogel. The designed CL has 59% porosity, 275% swelling ratio and undergoes no weight loss at physiological conditions in14 days. In-vitro release studies were performed on the CLs with and without nanofibers. The results showed that nanofiber incorporation in the designed CL was highly influential in decreasing burst release and supported sustained release of HA over 14 days. In addition, nanofiber incorporation in the designed system strengthened the lens, and the young modulus of the PVA hydrogel increased from 6 to 10 kPa. Cell viability study also revealed no cell cytotoxicity and cell attachment. Overall, the study demonstrated the effective role of nanofibers in the physical strengthening of the CL. Also, the designed system holds promise as a potential candidate for HA delivery over an extended period for treating dry eye syndrome.
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Affiliation(s)
- Elham Akbari
- Biomedical Engineering Department, 48410Amirkabir University of Technology, Tehran, Iran
| | - Rana Imani
- Biomedical Engineering Department, 48410Amirkabir University of Technology, Tehran, Iran
| | - Parvin Shokrollahi
- Faculty of Science, Department of Biomaterials, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Saeed Heidari Keshel
- Department of Tissue Engineering and Applied Cell Science, School of Advanced Technologies InMedicine, 556492Shahid Beheshti University of Medical Sciences, Iran
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Dehydration of isopropanol by poly(vinyl alcohol) hybrid membrane containing oxygen-plasma treated graphene oxide in pervaporation process. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.05.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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One Step e-Beam Radiation Cross-Linking of Quaternary Hydrogels Dressings Based on Chitosan-Poly(Vinyl-Pyrrolidone)-Poly(Ethylene Glycol)-Poly(Acrylic Acid). Int J Mol Sci 2020; 21:ijms21239236. [PMID: 33287433 PMCID: PMC7731230 DOI: 10.3390/ijms21239236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/29/2020] [Accepted: 11/30/2020] [Indexed: 01/26/2023] Open
Abstract
We report on the successful preparation of wet dressings hydrogels based on Chitosan-Poly(N-Vinyl-Pyrrolidone)-Poly(ethylene glycol)-Poly(acrylic acid) and Poly(ethylene oxide) by e-beam cross-linking in weakly acidic media, to be used for rapid healing and pain release of infected skin wounds. The structure and compositions of hydrogels investigated according to sol-gel and swelling studies, network parameters, as well as FTIR and XPS analyses showed the efficient interaction of the hydrogel components upon irradiation, maintaining the bonding environment while the cross-linking degree increasing with the irradiation dose and the formation of a structure with the mesh size in the range 11–67 nm. Hydrogels with gel fraction above 85% and the best swelling properties in different pH solutions were obtained for hydrogels produced with 15 kGy. The hydrogels are stable in the simulated physiological condition of an infected wound and show appropriate moisture retention capability and the water vapor transmission rate up to 272.67 g m−2 day−1, to ensure fast healing. The hydrogels proved to have a significant loading capacity of ibuprofen (IBU), being able to incorporate a therapeutic dose for the treatment of severe pains. Simultaneously, IBU was released up to 25% in the first 2h, having a release maximum after 8 h.
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Tunali-Akbay T, Kahraman MV, Oktay B, İpekci H, Kayaman-Apohan N. Development of nanofiber based immunosorbent surface for the removal of fluoxetine from breast milk. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2018.1525539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Tuğba Tunali-Akbay
- Faculty of Dentistry, Department of Basic Medical Sciences, Marmara University, Istanbul, Turkey
| | - Memet Vezir Kahraman
- Faculty of Art and Science, Department of Chemistry, Marmara University, Istanbul, Turkey
| | - Burcu Oktay
- Faculty of Art and Science, Department of Chemistry, Marmara University, Istanbul, Turkey
| | - Hazal İpekci
- Faculty of Dentistry, Department of Basic Medical Sciences, Marmara University, Istanbul, Turkey
| | - Nilhan Kayaman-Apohan
- Faculty of Art and Science, Department of Chemistry, Marmara University, Istanbul, Turkey
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Pandit A, Mazumdar N, Imtiyaz K, Rizvi MMA, Ahmad S. Periodate-Modified Gum Arabic Cross-linked PVA Hydrogels: A Promising Approach toward Photoprotection and Sustained Delivery of Folic Acid. ACS OMEGA 2019; 4:16026-16036. [PMID: 31592147 PMCID: PMC6777071 DOI: 10.1021/acsomega.9b02137] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 08/23/2019] [Indexed: 05/22/2023]
Abstract
The chemically oxidized gum arabic was prepared and used as a naturally derived nontoxic and pH-responsive cross-linker to develop smart polyvinyl alcohol (PVA)-based hydrogels for the first time. The formulated hydrogels exhibited high mechanical properties, good porosity, and pH sensitivity, which facilitated their application as promising biomaterials for sustained delivery of folic acid. Further, the synthesized cross-linked PVA hydrogels displayed no cytotoxicity toward the human embryonic kidney cell line and exhibited higher blood compatibility. The hydrolytic degradation study confirmed their biodegradable nature. While the sustained delivery along with photoprotective properties of these hydrogels confirmed their multifunctional characteristics, these results suggest that these hydrogels may act as an efficient photoprotective material and find their application in the field of drug delivery.
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Affiliation(s)
- Ashiq
Hussain Pandit
- Materials
Research Laboratory, Department of Chemistry, Material (Polymer)
Research Laboratory, Department of Chemistry, and Genome Biology Laboratory, Department
of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Nasreen Mazumdar
- Materials
Research Laboratory, Department of Chemistry, Material (Polymer)
Research Laboratory, Department of Chemistry, and Genome Biology Laboratory, Department
of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Khalid Imtiyaz
- Materials
Research Laboratory, Department of Chemistry, Material (Polymer)
Research Laboratory, Department of Chemistry, and Genome Biology Laboratory, Department
of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - M. Moshahid Alam Rizvi
- Materials
Research Laboratory, Department of Chemistry, Material (Polymer)
Research Laboratory, Department of Chemistry, and Genome Biology Laboratory, Department
of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Sharif Ahmad
- Materials
Research Laboratory, Department of Chemistry, Material (Polymer)
Research Laboratory, Department of Chemistry, and Genome Biology Laboratory, Department
of Biosciences, Jamia Millia Islamia, New Delhi 110025, India
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Liang J, Xiao X, Chou TM, Libera M. Counterion Exchange in Peptide-Complexed Core-Shell Microgels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9521-9528. [PMID: 31242724 DOI: 10.1021/acs.langmuir.9b01058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The complexation of polyvalent macroions with oppositely charged polyelectrolyte microgels can lead to core-shell structures. The shell is believed to be highly deswollen with a high concentration of counter-macroions. The core is believed to be relatively free of macroions but under a uniform compressive stress due to the deswollen shell. We use cryo-scanning electron microscopy (SEM) with X-ray microanalysis to confirm this understanding. We study poly(acrylic acid) (PAA) microgels which form a core-shell structure when complexed with a small cationic antimicrobial peptide (L5). We follow the spatial distribution of polymer, water, Na counterions, and peptide based on the characteristic X-ray intensities of C, O, Na, and N, respectively. Frozen-hydrated microgel suspensions include buffers of known composition from which calibration curves can be generated and used to quantify both the microgel water and sodium concentrations, the latter with a minimum quantifiable concentration less than 0.048 M. We find that as-synthesized PAA microgels are enriched in Na relative to the surrounding buffer as anticipated from established ideas of counterion shielding of electrostatic charge. The shell in L5-complexed microgels is depleted in Na and enriched in peptide and contains relatively little water. Our measurements furthermore show that shell/core interface is diffuse over a length scale of a few micrometers. Within the limits of detection, the core Na concentration is the same as that in as-synthesized microgels, and the core is free of peptide. The core has a slightly lower water concentration than as-synthesized controls, consistent with the hypothesis that the core is under compression from the shell.
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Affiliation(s)
- Jing Liang
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
| | - Xixi Xiao
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
| | - Tseng-Ming Chou
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
| | - Matthew Libera
- Department of Chemical Engineering & Materials Science , Stevens Institute of Technology , Hoboken , New Jersey 07030 , United States
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9
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Sanchez LM, Alvarez VA. Development of potentially biocompatible hydrogels with cylindrical pores prepared from polyvinyl alcohol and low‐molecular weight polyacrylic acid. POLYM ENG SCI 2019. [DOI: 10.1002/pen.25147] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Laura M. Sanchez
- Materiales Compuestos Termoplásticos, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA)CONICET ‐ Universidad Nacional de Mar del Plata (UNMdP) Av. Colón 10890, Mar del Plata 7600 Argentina
| | - Vera A. Alvarez
- Materiales Compuestos Termoplásticos, Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA)CONICET ‐ Universidad Nacional de Mar del Plata (UNMdP) Av. Colón 10890, Mar del Plata 7600 Argentina
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10
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Huang L, Fantke P, Ernstoff A, Jolliet O. A quantitative property-property relationship for the internal diffusion coefficients of organic compounds in solid materials. INDOOR AIR 2017; 27:1128-1140. [PMID: 28548238 DOI: 10.1111/ina.12395] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 05/20/2017] [Indexed: 05/10/2023]
Abstract
Indoor releases of organic chemicals encapsulated in solid materials are major contributors to human exposures and are directly related to the internal diffusion coefficient in solid materials. Existing correlations to estimate the diffusion coefficient are only valid for a limited number of chemical-material combinations. This paper develops and evaluates a quantitative property-property relationship (QPPR) to predict diffusion coefficients for a wide range of organic chemicals and materials. We first compiled a training dataset of 1103 measured diffusion coefficients for 158 chemicals in 32 consolidated material types. Following a detailed analysis of the temperature influence, we developed a multiple linear regression model to predict diffusion coefficients as a function of chemical molecular weight (MW), temperature, and material type (adjusted R2 of .93). The internal validations showed the model to be robust, stable and not a result of chance correlation. The external validation against two separate prediction datasets demonstrated the model has good predicting ability within its applicability domain (Rext2>.8), namely MW between 30 and 1178 g/mol and temperature between 4 and 180°C. By covering a much wider range of organic chemicals and materials, this QPPR facilitates high-throughput estimates of human exposures for chemicals encapsulated in solid materials.
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Affiliation(s)
- L Huang
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Abor, MI, USA
| | - P Fantke
- Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Lyngby, Denmark
| | - A Ernstoff
- Division for Quantitative Sustainability Assessment, Department of Management Engineering, Technical University of Denmark, Lyngby, Denmark
| | - O Jolliet
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Abor, MI, USA
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Nafea EH, Poole-Warren LA, Martens PJ. Bioactivity of permselective PVA hydrogels with mixed ECM analogues. J Biomed Mater Res A 2015; 103:3727-35. [DOI: 10.1002/jbm.a.35510] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 05/17/2015] [Accepted: 05/19/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Eman H. Nafea
- Graduate School of Biomedical Engineering; UNSW Australia; Sydney New South Wales 2052 Australia
| | - Laura A. Poole-Warren
- Graduate School of Biomedical Engineering; UNSW Australia; Sydney New South Wales 2052 Australia
| | - Penny J. Martens
- Graduate School of Biomedical Engineering; UNSW Australia; Sydney New South Wales 2052 Australia
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12
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Nafea EH, Poole-Warren LA, Martens PJ. Structural and permeability characterization of biosynthetic PVA hydrogels designed for cell-based therapy. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2014; 25:1771-90. [DOI: 10.1080/09205063.2014.950033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Preparation method and physical, mechanical, thermal characterization of poly(vinyl alcohol)/poly(acrylic acid) blends. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1221-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Habib Nafea E, Poole-Warren LA, Martens PJ. Correlation of macromolecular permeability to network characteristics of multivinyl poly(vinyl alcohol) hydrogels. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/polb.23397] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Eman Habib Nafea
- Graduate School of Biomedical Engineering, University of New South Wales; 2052 New South Wales Sydney Australia
| | - Laura A. Poole-Warren
- Graduate School of Biomedical Engineering, University of New South Wales; 2052 New South Wales Sydney Australia
| | - Penny J. Martens
- Graduate School of Biomedical Engineering, University of New South Wales; 2052 New South Wales Sydney Australia
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15
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Niamlang S, Buranut T, Niansiri A, Sirivat A. Controlled Aloin Release from Crosslinked Polyacrylamide Hydrogels: Effects of Mesh Size, Electric Field Strength and a Conductive Polymer. MATERIALS 2013; 6:4787-4800. [PMID: 28788360 PMCID: PMC5452847 DOI: 10.3390/ma6104787] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Revised: 10/06/2013] [Accepted: 10/11/2013] [Indexed: 12/03/2022]
Abstract
The aim of this paper is to investigate the effects of hydrogel mesh size, a conductive polymer, and electric field strength on controlled drug delivery phenomena using drug-loaded polyacrylamide hydrogels prepared at various crosslinking ratios both with and without a conductive polymer system. Poly(p-phenylene vinylene), PPV, as the model conductive polymer, was used to study its ability to control aloin released from aloin-doped poly(p-phenylene vinylene)/polyacrylamide hydrogel (aloin-doped PPV/PAAM). In the passive release, the diffusion of aloin from five aloin-doped PPV/PAAM hydrogel systems each was delayed ranging from during the first three hours to during the first 14 h due to the ionic interaction between the anionic drug and PPV. After the delayed periods, aloin could diffuse continuously into the buffer solution through the PAAM matrix. The amount of aloin released from the aloin-doped PPV/PAAM rose with increasing electric field strength as a result of the three mechanisms: the expansion of PPV chains inside the hydrogel, iontophoresis, and the electroporation of the matrix pore size, combined. Furthermore, the conductive polymer and the electric field could be used in combination to regulate the amount of release drug to a desired level, to control the release rate, and to switch the drug delivery on/off.
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Affiliation(s)
- Sumonman Niamlang
- Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Klong 6, Thanyaburi, Pathumthani 12110, Thailand.
| | - Tawansorn Buranut
- Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Klong 6, Thanyaburi, Pathumthani 12110, Thailand.
| | - Amornrat Niansiri
- Department of Materials and Metallurgical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Klong 6, Thanyaburi, Pathumthani 12110, Thailand.
| | - Anuvat Sirivat
- Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand.
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Affiliation(s)
- Samaneh Khanlari
- Department of Chemical and Biological Engineering; Centre for Catalysis Research and Innovation; University of Ottawa; 161 Louis Pasteur Pvt. Ottawa ON, Canada K1N 6N5
| | - Marc A. Dubé
- Department of Chemical and Biological Engineering; Centre for Catalysis Research and Innovation; University of Ottawa; 161 Louis Pasteur Pvt. Ottawa ON, Canada K1N 6N5
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17
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Sittiwong J, Niamlang S, Paradee N, Sirivat A. Electric field-controlled benzoic acid and sulphanilamide delivery from poly(vinyl alcohol) hydrogel. AAPS PharmSciTech 2012; 13:1407-15. [PMID: 23065453 DOI: 10.1208/s12249-012-9869-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 09/27/2012] [Indexed: 11/30/2022] Open
Abstract
The controlled release of benzoic acid (3.31 Å) and sulphanilamide (3.47 Å) from poly(vinyl alcohol), PVA, hydrogels fabricated by solution casting at various cross-linking ratios, were investigated. The PVA hydrogels were characterized in terms of the degree of swelling, the molecular weight between cross-links, and the mesh size. The drug release experiment was carried out using a modified Franz diffusion cell, at a pH value of 5.5 and at temperature of 37°C. The amount of drug release and the diffusion coefficients of the drugs from the PVA hydrogels increased with decreasing cross-linking ratio, as a larger mesh size was obtained with lower cross-linking ratios. With the application of an electric field, the amount of drug release and the diffusion coefficient increased monotonically with increasing electric field strength, since the resultant electrostatic force drove the ionic drugs from the PVA matrix. The drug size, matrix pore size, electrode polarity, and applied electric field were shown to be influential controlling factors for the drug release rate.
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Analysis of drug distribution from a simulated drug-eluting stent strut using an in vitro framework. Ann Biomed Eng 2012; 40:2687-96. [PMID: 22648579 DOI: 10.1007/s10439-012-0604-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Accepted: 05/22/2012] [Indexed: 10/28/2022]
Abstract
The mechanisms of delivery of anti-proliferative drug from a drug-eluting stent are defined by transport forces in the coating, the lumen, and the arterial wall. Dynamic asymmetries in the localized flow about stent struts have previously been shown to contribute to significant heterogeneity in the spatial distribution of drug in in silico three-compartmental models of stent based drug delivery. A novel bench-top experiment has been created to confirm this phenomena. The experiment simulates drug release from a single stent strut, and then allows visualization of drug uptake into both lumen and tissue domains using optical techniques. Results confirm the existence of inhomogeneous and asymmetric arterial drug distributions, with this distribution shown to be sensitive to the flow field surrounding the strut.
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Cook JP, Goodall GW, Khutoryanskaya OV, Khutoryanskiy VV. Microwave-Assisted Hydrogel Synthesis: A New Method for Crosslinking Polymers in Aqueous Solutions. Macromol Rapid Commun 2012; 33:332-6. [DOI: 10.1002/marc.201100742] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2011] [Revised: 11/25/2011] [Indexed: 12/29/2022]
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O'Brien CC, Finch CH, Martens P, Barber TJ, Simmons A. Development of an in vitro method for modeling drug release and subsequent tissue drug uptake and deposition in a pulsatile flow network. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2011; 2011:3262-3265. [PMID: 22255035 DOI: 10.1109/iembs.2011.6090886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel benchtop model of drug elution and arterial drug deposition following stent implantation has been developed. The model contains a single drug loaded strut and a compartment simulating the vessel wall, housed in a flow chamber under a pulsatile flow regime. Each component has programmable transport properties that can be implemented into a computational model of drug elution. An initial experiment determining the effects of luminal flow on drug deposition patterns was performed. The results show that spatial distribution of drug correlates with areas of low and recirculating flow surrounding the strut. This spatial distribution of drug was shown to be dependent on both transient release behavior and the local flow field surrounding the strut. Furthermore, these results showed that the novel method could be used to study the effects of luminal flow in the presence of single or multiple struts. The method could also be used to explore more complex drug release strategies.
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Affiliation(s)
- Caroline C O'Brien
- Graduate School of Biomedical Engineering, The University of New South Wales, Sydney, UNSW, Australia 2052 .
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Bajpai AK, Saini R. Designing of macroporous biocompatible cryogels of PVA-haemoglobin and their water sorption study. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2009; 20:2063-2074. [PMID: 19455407 DOI: 10.1007/s10856-009-3777-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Accepted: 05/05/2009] [Indexed: 05/27/2023]
Abstract
Macroporous polymeric materials are three-dimensional porous architectures having enormous utility in the areas of biomedical, biotechnological and separation sciences. Thus realizing the crucial role of macroporous polymeric materials in tissue engineering and allied fields the present paper discusses synthesis, characterization, and blood compatibility study of macroporous cryogels of PVA and haemoglobin. Biocompatible spongy and porous hydrogels of polyvinyl alcohol-haemoglobin have been synthesized by repeated freezing-thawing method and characterized by Infrared (FTIR), and ESEM techniques. The FTIR analysis of prepared cryogels indicated that haemoglobin was introduced into the cryogel possibly via hydrogen bonds formed amongst hydroxyl groups and amino groups present in PVA and haemoglobin, respectively. The 'cryogels' were evaluated for their water uptake potentials and influence of various factors such as chemical architecture of the spongy hydrogels, pH and temperature of the swelling bath were investigated on the degree of water sorption by the cryogels. The hydrogels were also swollen in salt solutions and various simulated biological fluids. The effect of drying temperature on its water sorption capacity was also studied. The biocompatibility of the prepared cryogels was judged by in vitro methods of blood-clot formation, percent haemolysis and protein (BSA) adsorption.
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Affiliation(s)
- A K Bajpai
- Bose Memorial Research Laboratory, Department of Chemistry, Government Autonomous Science College, Jabalpur, MP 482 001, India.
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Yao RS, You QD, Liu PJ, Xu YF. Synthesis and pH-induced phase transition behavior of PAA/PVA nanogels in aqueous media. J Appl Polym Sci 2009. [DOI: 10.1002/app.29078] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Yang X, Zhu Z, Liu Q, Chen X. Thermal and rheological properties of poly(vinyl alcohol) and water‐soluble chitosan hydrogels prepared by a combination of γ‐ray irradiation and freeze thawing. J Appl Polym Sci 2008. [DOI: 10.1002/app.28436] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Investigation of PVA/ws-chitosan hydrogels prepared by combined γ-irradiation and freeze-thawing. Carbohydr Polym 2008. [DOI: 10.1016/j.carbpol.2007.12.008] [Citation(s) in RCA: 160] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Juntanon K, Niamlang S, Rujiravanit R, Sirivat A. Electrically controlled release of sulfosalicylic acid from crosslinked poly(vinyl alcohol) hydrogel. Int J Pharm 2008; 356:1-11. [DOI: 10.1016/j.ijpharm.2007.12.023] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2007] [Revised: 11/30/2007] [Accepted: 12/17/2007] [Indexed: 11/29/2022]
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Nugent MJD, Higginbotham CL. Preparation of a novel freeze thawed poly(vinyl alcohol) composite hydrogel for drug delivery applications. Eur J Pharm Biopharm 2007; 67:377-86. [PMID: 17398082 DOI: 10.1016/j.ejpb.2007.02.014] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2006] [Revised: 02/09/2007] [Accepted: 02/16/2007] [Indexed: 01/07/2023]
Abstract
We describe a drug delivery system based on a physically cross-linked poly(vinyl alcohol) (PVA) hydrogel for the release of Theophylline (TH). A composite was created by freezing an aqueous solution of PVA/NaOH onto a PVA/poly(acrylic acid) substrate. This formed a strong interface and demonstrated greater physical strength than the hydrogel alone. Such systems have potential for a variety of localised controlled drug delivery applications, for example, as coatings for implantable devices. Importantly, the results suggest that a versatile synthetic platform is possible that may provide different functional materials or combination of such. The resultant samples were characterised using optical microscopy, modulated differential scanning calorimetry (MDSC) and dissolution testing. The microstructure of the gels was examined using micro-thermal analysis (microTA) which is a combination of atomic force microscopy and thermal analysis. TH was found to have an effect on the crystalline structure and dissolution showed a Fickian release, suggesting that swelling and crystallinity were the controlling mechanisms.
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The swelling behavior and network parameters of guar gum/poly(acrylic acid) semi-interpenetrating polymer network hydrogels. Carbohydr Polym 2006. [DOI: 10.1016/j.carbpol.2006.04.003] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Bajpai A, Saini R. Preparation and characterization of spongy cryogels of poly(vinyl alcohol)-casein system: water sorption and blood compatibility study. POLYM INT 2005. [DOI: 10.1002/pi.1773] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Peppas N, Tennenhouse D. Semicrystalline poly(vinyl alcohol) films and their blends with poly(acrylic acid) and poly(ethylene glycol) for drug delivery applications. J Drug Deliv Sci Technol 2004. [DOI: 10.1016/s1773-2247(04)50050-3] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Atta AM, El-Ghazawy RAM. Effect of chemical crosslinking on swelling parameters of modified poly(vinyl alcohol) hydrogel. INT J POLYM MATER PO 2003. [DOI: 10.1080/00914030304905] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lyoo WS, Lee SM, Koo K, Lee JS, Ghim HD, Kim JP, Lee J. Effect of emulsion polymerization conditions of vinyl acetate on the viscosity fluctuation and gelation behavior of aqueous poly(vinyl alcohol) solution. J Appl Polym Sci 2001. [DOI: 10.1002/app.2034] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
Miconazole nitrate, a fungicidal, is effective for the local treatment of vaginitis. The objective of this project was to develop a swelling-controlled release delivery system for miconazole. An aqueous solution of 15% w/w poly(vinyl alcohol) was mixed with a specific amount of miconazole powder. The resultant mixture was cross-linked by freeze-thawing. The effect of the number of freeze-thawing cycles was studied at four levels. The effect of the presence of PEG was studied by mixing different concentrations of two different PEG. The swelling at the end of 48 h was significantly higher (32%) for the batch that underwent four cycles. The swelling within the first 15 min for the batches containing PEG1000 was approximately 9%. However, the swelling for the batches containing PEG1450, at much lower concentration, within the same period was between 10 and 19%. The drug release profiles up to 108 h were independent of the number of freeze-thawing cycles. The cumulative percent miconazole released, in the absence of PEG, (two, four, six, eight cycles) at the end of 108 h was between 30 and 35%. The drug release was lower for the batches containing PEG1000, irrespective of the concentrations, compared with the batches containing PEG1450. A comparison of the value of diffusional exponent (n) indicates the predominance of a Fickian diffusion mechanism of release from the hydrogels.
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Affiliation(s)
- T K Mandal
- Division of Pharmaceutics, College of Pharmacy, Xavier University of Louisiana, New Orleans LA 70125, USA.
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Maolin Z, Ning L, Jun L, Min Y, Jiuqiang L, Hongfei H. Radiation preparation of PVA-g-NIPAAm in a homogeneous system and its application in controlled release. Radiat Phys Chem Oxf Engl 1993 2000. [DOI: 10.1016/s0969-806x(99)00476-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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