1
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Morrison TX, Gramlich WM. Tunable, thiol-ene, interpenetrating network hydrogels of norbornene-modified carboxymethyl cellulose and cellulose nanofibrils. Carbohydr Polym 2023; 319:121173. [PMID: 37567714 DOI: 10.1016/j.carbpol.2023.121173] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 06/25/2023] [Accepted: 06/30/2023] [Indexed: 08/13/2023]
Abstract
Carboxymethyl cellulose modified with norbornene groups (NorCMC) and cellulose nanofibrils (CNFs) produced through mechanical refining without chemical pretreatment formed interpenetrating network hydrogels through a UV-light initiated thiol-ene reaction. The molar ratio of thiols in crosslinkers to norbornene groups off the NorCMC (T:N), total polymer weight percent in the hydrogel, and weight percent of CNFs of the total polymer content of the hydrogels were varied to control hydrogel properties. This method enabled orders of magnitude changes to behavior. Swelling in aqueous environments could be significant (>150 %) without CNFs to minimal (<15 %) with the use of 50 % CNFs. NorCMC and CNF networks interacted synergistically to create hydrogels with compression modulus values spanning 1 to 150 kPa - the values of most biological tissues. T:N and total polymer weight percent could be varied to create hydrogels with different CNF content, but the same compression modulus, targeting 10 and 100 kPa hydrogels and providing a system that can independently vary fibrillar content and bulk modulus. Analysis of the effective crosslinks, thiol-ene network mesh size, and burst release of the polymer indicated synergistic interactions of the NorCMC thiol-ene and CNFs networks. These interactions enhanced modulus and degradation control of the network under physiological conditions.
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Affiliation(s)
| | - William M Gramlich
- Department of Chemistry, University of Maine, Orono, ME 04469, USA; Advanced Structures and Composites Center, University of Maine, Orono, ME 04469, USA; Institute of Medicine, University of Maine, Orono, ME 04469, USA.
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2
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Gonçalves A, Simões BT, Almeida FV, Fernandes SN, Valente M, Vieira T, Henriques C, Borges JP, Soares PIP. Engineering dual-stimuli responsive poly(vinyl alcohol) nanofibrous membranes for cancer treatment by magnetic hyperthermia. BIOMATERIALS ADVANCES 2023; 145:213275. [PMID: 36608438 DOI: 10.1016/j.bioadv.2022.213275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 11/30/2022] [Accepted: 12/27/2022] [Indexed: 01/01/2023]
Abstract
The development of new cancer treatment options, such as multifunctional devices, allows for a more personalized treatment, avoiding the known severe side effects of conventional options. In this context, on-demand drug delivery systems can actively control the rate of drug release offering a precise control of treatment. Magnetically and thermally controlled drug delivery systems have been explored as on-demand devices to treat chronic diseases and cancer tumors. In the present work, dual-stimuli responsive systems were developed by incorporating Fe3O4 magnetic nanoparticles (NPs) and poly(N-isopropylacrylamide) (PNIPAAm) microgels into electrospun polymeric fibers for application in cancer treatment. First, Fe3O4 NPs with an average diameter of 8 nm were synthesized by chemical precipitation technique and stabilized with dimercaptosuccinic acid (DMSA) or oleic acid (OA). PNIPAAm microgels were synthesized by surfactant-free emulsion polymerization (SFEP). Poly(vinyl alcohol) (PVA) was used as a fiber template originating fibers with an average diameter of 179 ± 14 nm. Stress tests of the membranes showed that incorporating both microgels and Fe3O4 NPs in electrospun fibers increases their Young's modulus. Swelling assays indicate that PVA membranes have a swelling ratio of around 3.4 (g/g) and that the presence of microgels does not affect its swelling ability. However, with the incorporation of Fe3O4 NPs, the swelling ratio of the membranes decreases. Magnetic hyperthermia assays show that a higher concentration of NPs leads to a higher heating ability. The composite membrane with the most promising results is the one incorporated with DMSA-coated NPs, since it shows the highest temperature variation, 5.1 °C. To assess the membranes biocompatibility and ability to promote cell proliferation, indirect and direct contact cell viability assays were performed, as well as cell adhesion assays. Following an extract method viability assay, all membrane designs did not reveal cytotoxic effects on dermal fibroblasts and melanoma cancer cells, after 48 h exposure and support long-term viability. The present work demonstrates the potential of dual-stimuli composite membranes for magnetic hyperthermia and may in the future be used as an alternative cancer treatment particularly in anatomically reachable solid tumors.
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Affiliation(s)
- Adriana Gonçalves
- i3N/CENIMAT, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Beatriz T Simões
- i3N/CENIMAT, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Filipe V Almeida
- i3N/CENIMAT, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Susete N Fernandes
- i3N/CENIMAT, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Manuel Valente
- i3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Tânia Vieira
- i3N/CENIMAT, Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal
| | - Célia Henriques
- i3N/CENIMAT, Department of Physics, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal
| | - João Paulo Borges
- i3N/CENIMAT, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal.
| | - Paula I P Soares
- i3N/CENIMAT, Department of Materials Science, NOVA School of Science and Technology, NOVA University Lisbon, Campus de Caparica, 2829-516 Caparica, Portugal.
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3
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Sakunpongpitiporn P, Naeowong W, Sirivat A. Enhanced transdermal insulin basal release from silk fibroin (SF) hydrogels via iontophoresis. Drug Deliv 2022; 29:2234-2244. [PMID: 35848994 PMCID: PMC9848418 DOI: 10.1080/10717544.2022.2096717] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Insulin is the peptide hormone used to treat the diabetes patient. The hormone is normally taken by injection. The transdermal drug delivery system (TDDS) is an alternative route. The silk fibroin (SF) hydrogels were fabricated via solution casting as the insulin matrix. The release and release-permeation experiments of the insulin loaded SF hydrogels were carried out using a modified Franz-diffusion cell at 37 °C for 36 h, under the effects of SF concentrations, pH, and electric field. The release-permeation mechanism through the pig skin was from the Case-II transport with the constant release rate. The diffusion coefficient (D) increased with decreasing SF concentration due to a larger mesh size, and with increasing electric field due to the electroreplusive forces between the insulin and the SF hydrogels against the negatively-charged electrode, and the induced SF hydrogel expansion. The rate and amount of insulin release-permeation became relatively lower as it required a longer time to generate aqueous pathways through the pig skin. The present SF hydrogels are demonstrated here deliver insulin with the required constant release rate, and the suitable amount within a prescribed duration.
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Affiliation(s)
- Phimchanok Sakunpongpitiporn
- The Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand
| | - Witthawat Naeowong
- Division of Perioperative and Ambulatory Medicine, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Anuvat Sirivat
- The Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand,CONTACT Anuvat Sirivat The Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok10330, Thailand
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4
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Seeponkai N, Khammuang K, Fuggate P, Seephonkai P. Physical properties and ion permeability of crosslinking hydrogel membrane based on poly(vinyl alcohol) for soilless cultivation. J Appl Polym Sci 2022. [DOI: 10.1002/app.53311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Narumon Seeponkai
- Faculty of Engineering, Department of Industrial Engineering, Division of Materials Engineering Naresuan University Phitsanulok Thailand
| | - Kwanniti Khammuang
- Faculty of Engineering, Department of Industrial Engineering Naresuan University Phitsanulok Thailand
| | - Puwanart Fuggate
- Faculty of Agriculture, Natural Resources and Environment, Department of Agro‐industry Naresuan University Phitsanulok Thailand
| | - Prapairat Seephonkai
- Faculty of Science, Department of Chemistry, Multidisciplinary Research Unit of Pure and Applied Chemistry Mahasarakham University and Center of Excellence for Innovation in Chemistry (PERCH‐CIC) Khamriang, Kantarawichai Thailand
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5
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Neira-Carrillo A, Zárate IA, Nieto E, Butto-Miranda N, Lobos-González L, Del Campo-Smith M, Palacio DA, Urbano BF. Electrospun Poly(acrylic acid- co-4-styrene sulfonate) as Potential Drug-Eluting Scaffolds for Targeted Chemotherapeutic Delivery Systems on Gastric (AGS) and Breast (MDA-Mb-231) Cancer Cell Lines. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3903. [PMID: 36364679 PMCID: PMC9657868 DOI: 10.3390/nano12213903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/26/2022] [Accepted: 10/31/2022] [Indexed: 06/16/2023]
Abstract
Potential drug-eluting scaffolds of electrospun poly(acrylic acid-co-styrene sulfonate) P(AA-co-SS) in clonogenic assays using tumorigenic gastric and ovarian cancer cells were tested in vitro. Electrospun polymer nanofiber (EPnF) meshes of PAA and PSSNa homo- and P(AA-co-SS) copolymer composed of 30:70, 50:50, 70:30 acrylic acid (AA) and sodium 4-styrene sulfonate (SSNa) units were performed by electrospinning (ES). The synthesis, structural and morphological characterization of all EPnF meshes were analyzed by optical and electron microscopy (SEM-EDS), infrared spectroscopy (FTIR), contact angle, and X-ray diffraction (XRD) measurements. This study shows that different ratio of AA and SSNa of monomers in P(AA-co-SS) EPnF play a crucial role in clonogenic in vitro assays. We found that 50:50 P(AA-co-SS) EPnF mesh loaded with antineoplastic drugs can be an excellent suppressor of growth-independent anchored capacities in vitro assays and a good subcutaneous drug delivery system for chemotherapeutic medication in vivo model for surgical resection procedures in cancer research.
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Affiliation(s)
- Andrónico Neira-Carrillo
- Department of Biological and Animal Sciences, Faculty of Veterinary and Animal Sciences, University of Chile, Santa Rosa 11735, La Pintana, Santiago 8820808, Chile
- Advanced Center for Chronic Diseases (ACCDIS), Santiago 380492, Chile
| | - Ignacio A. Zárate
- Department of Biological and Animal Sciences, Faculty of Veterinary and Animal Sciences, University of Chile, Santa Rosa 11735, La Pintana, Santiago 8820808, Chile
| | - Eddie Nieto
- Department of Biological and Animal Sciences, Faculty of Veterinary and Animal Sciences, University of Chile, Santa Rosa 11735, La Pintana, Santiago 8820808, Chile
| | - Nicole Butto-Miranda
- Department of Biological and Animal Sciences, Faculty of Veterinary and Animal Sciences, University of Chile, Santa Rosa 11735, La Pintana, Santiago 8820808, Chile
| | - Lorena Lobos-González
- Advanced Center for Chronic Diseases (ACCDIS), Santiago 380492, Chile
- Center for Regenerative Medicine, Faculty of Medicine, Universidad del Desarrollo, Clínica Alemana, Santiago 7610658, Chile
| | - Matias Del Campo-Smith
- Advanced Center for Chronic Diseases (ACCDIS), Santiago 380492, Chile
- Center for Regenerative Medicine, Faculty of Medicine, Universidad del Desarrollo, Clínica Alemana, Santiago 7610658, Chile
| | - Daniel A. Palacio
- Department of Polymer Chemistry, Faculty of Chemical Science, University of Concepción, Concepción 3349001, Chile
| | - Bruno F. Urbano
- Department of Polymer Chemistry, Faculty of Chemical Science, University of Concepción, Concepción 3349001, Chile
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6
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Mamada H, Kemmochi A, Tamura T, Shimizu Y, Owada Y, Ozawa Y, Hisakura K, Oda T, Ohkohchi N, Kawano Y, Hanawa T. Development and evaluation of novel hydrogel for preventing postoperative pancreatic fistula. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hiroshi Mamada
- Faculty of Pharmaceutical Sciences Tokyo University of Science Chiba Japan
| | - Akira Kemmochi
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Takafumi Tamura
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Yoshio Shimizu
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Yohei Owada
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Yusuke Ozawa
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Katsuji Hisakura
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Tatsuya Oda
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Nobuhiro Ohkohchi
- Department of Gastrointestinal and Hepato‐Biliary‐Pancreatic Surgery, Faculty of Medicine University of Tsukuba Tsukuba Japan
| | - Yayoi Kawano
- Faculty of Pharmaceutical Sciences Tokyo University of Science Chiba Japan
| | - Takehisa Hanawa
- Faculty of Pharmaceutical Sciences Tokyo University of Science Chiba Japan
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7
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Hayrabolulu H, Demeter M, Cutrubinis M, Şen M. Radiation synthesis and characterization of xanthan gum hydrogels. Radiat Phys Chem Oxf Engl 1993 2021. [DOI: 10.1016/j.radphyschem.2021.109613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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8
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Hyaluronic Acid and Graphene Oxide-incorporated Hyaluronic Acid Hydrogels for Electrically Stimulated Release of Anticancer Tamoxifen Citrate. J Pharm Sci 2021; 111:1633-1641. [PMID: 34756869 DOI: 10.1016/j.xphs.2021.10.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 10/24/2021] [Accepted: 10/24/2021] [Indexed: 01/14/2023]
Abstract
Transdermal drug delivery is the transport of drug across the skin and into the systemic circulation. Patch is a one of transdermal device that is used to attach on skin and contains drug. The drug matrices from hyaluronic acid (HA) and graphene oxide (GO) incorporated HA hydrogel were fabricated for the release of tamoxifen citrate (TMX) as the anticancer drug under applied electrical field. The pristine HA hydrogels as the matrix and GO as the drug encapsulation host were fabricated for transdermal patch by the solution casting using citric acid as the chemical crosslinker. In vitro drug release experiment was investigated by utilizing the modified Franz-diffusion cell under the effects of crosslinking ratio, electric potential, and GO. The TMX release behaviors from the hydrogels were found to be from the three mechanisms: the pure Fickian diffusion; the anomalous or non-Fickian diffusion; and Super case II transport depending on the crosslinking conditions. The TMX diffusion and release amount from the pristine HA hydrogels were increased with smaller crosslinking ratios. With applied electrical potential, the enhanced TMX diffusion and release amount were observed when compared to that without due to the electro-repulsive force. Furthermore, the TMX diffusion from the HA hydrogel with GO as the drug encapsulation host was higher by two orders of magnitude than without GO.
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9
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Angelini A, Fodor C, Leva L, Car A, Dinu IA, Yave W, Meier W. Synthesis and characterization of tailor‐made
N
‐vinylpyrrolidone copolymers and their blend membranes with polyvinyl alcohol for bioethanol dehydration by pervaporation. J Appl Polym Sci 2021. [DOI: 10.1002/app.51562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Csaba Fodor
- Department of Chemistry University of Basel Basel Switzerland
| | - Luigi Leva
- Research and Development Department DeltaMem AG Allschwill Switzerland
| | - Anja Car
- Department of Chemistry University of Basel Basel Switzerland
| | | | - Wilfredo Yave
- Research and Development Department DeltaMem AG Allschwill Switzerland
| | - Wolfgang Meier
- Department of Chemistry University of Basel Basel Switzerland
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10
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Crosby CO, Hillsley A, Kumar S, Stern B, Parekh SH, Rosales A, Zoldan J. Phototunable interpenetrating polymer network hydrogels to stimulate the vasculogenesis of stem cell-derived endothelial progenitors. Acta Biomater 2021; 122:133-144. [PMID: 33359297 PMCID: PMC7983093 DOI: 10.1016/j.actbio.2020.12.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 02/08/2023]
Abstract
Vascularization of engineered scaffolds remains a critical obstacle hindering the translation of tissue engineering from the bench to the clinic. We previously demonstrated the robust micro-vascularization of collagen hydrogels with induced pluripotent stem cell (iPSC)-derived endothelial progenitors; however, physically cross-linked collagen hydrogels compact rapidly and exhibit limited strength. We have synthesized an interpenetrating polymer network (IPN) hydrogel comprised of collagen and norbornene-modified hyaluronic acid (NorHA) to address these challenges. This dual-network hydrogel combines the natural cues presented by collagen's binding sites and extracellular matrix (ECM)-mimicking fibrous architecture with the in situ modularity and chemical cross-linking of NorHA. We modulated the IPN hydrogel's stiffness and degradability by varying the concentration and sequence, respectively, of the NorHA peptide cross-linker. Rheological characterization of the photo-mediated gelation process revealed that the IPN hydrogel's stiffness increased with cross-linker concentration and was decoupled from the bulk NorHA content. Conversely, the swelling of the IPN hydrogel decreased linearly with increasing cross-linker concentration. Collagen microarchitecture remained relatively unchanged across cross-linking conditions, although the addition of NorHA delayed collagen fibrillogenesis. Upon iPSC-derived endothelial progenitor encapsulation, robust, lumenized microvascular networks developed in IPN hydrogels over two weeks. Subsequent computational analysis showed that an initial rise in stiffness increased the number of branch points and vessels, but vascular growth was suppressed in high stiffness IPN hydrogels. These results suggest that an IPN hydrogel consisting of collagen and NorHA is highly tunable, compaction resistant, and capable of supporting vasculogenesis.
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Affiliation(s)
- Cody O Crosby
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States; Department of Physics, Southwestern University, Georgetown, TX, 78626, United States
| | - Alex Hillsley
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712, United States
| | - Sachin Kumar
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States
| | - Brett Stern
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States
| | - Sapun H Parekh
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States
| | - Adrianne Rosales
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX, 78712, United States
| | - Janet Zoldan
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, United States.
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11
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Paradee N, Thanokiang J, Sirivat A. Conductive poly(2-ethylaniline) dextran-based hydrogels for electrically controlled diclofenac release. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111346. [PMID: 33254969 DOI: 10.1016/j.msec.2020.111346] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 08/14/2019] [Accepted: 07/20/2020] [Indexed: 10/23/2022]
Abstract
Transdermal drug delivery systems (TDDS) are used as an alternative route to deliver drugs into the blood system for therapy. The matrix materials that have been widely used in TDDS are hydrogels. The dextran hydrogels were prepared by the solution casting using trisodium trimetaphosphate (STMP) as the crosslinking agent, and diclofenac sodium salt (Dcf) as the anionic model drug. Poly(2-ethylaniline) (PEAn) was successfully synthesized and embedded into the dextran hydrogel as the drug encapsulation host. The in-vitro release of Dcf from the hydrogels was investigated using a modified Franz-Diffusion cell in a phosphate-buffered saline (PBS) solution at the pH of 7.4 and at 37 °C for a period of 24 h, under the effects of crosslinking ratios, dextran molecular weights, electric potentials, and the conductive polymer PEAn. The release mechanism of Dcf from the dextran hydrogels and the composite without electrical potential was the diffusion controlled mechanism or the Fickian diffusion. Under applied electrical potentials, the release mechanism was a combination between the Fickian diffusion and the matrix swelling. The Dcf diffusion coefficients from the dextran hydrogels without electrical potential increased with decreasing crosslinking ratio and molecular weight. Under electrical potentials, the corresponding diffusion coefficients were much higher due mainly to the electro-repulsive force between the negatively charged electrode and the negatively charged dextran and the induced dextran expansion. For the Dcf-loaded PEAn/dextran composite, the diffusion coefficient was enhanced by two orders of magnitude when the electric potential was applied, specifically illustrating the unique features of PEAn as an efficient drug encapsulation host without electric field, and as a drug release enhancer under electric field through the reduction reaction.
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Affiliation(s)
- Nophawan Paradee
- Department of Chemistry, Faculty of Science, King Mongkut's University of Technology Thonburi, Bangkok 10140, Thailand
| | - Jirawat Thanokiang
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand
| | - Anuvat Sirivat
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok 10330, Thailand.
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12
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Zhang Z, Liu Y, Lin S, Wang Q. Preparation and properties of glutaraldehyde crosslinked poly(vinyl alcohol) membrane with gradient structure. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02223-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Zhao B, Ma W, Zhang P, Zhang Q, Zhong J, Matsuyama H. Permeation and diffusion of nutrient ions in poly (vinyl alcohol) hydrogel membrane. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01210-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Schver GC, Nadvorny D, Lee PI. Evolution of supersaturation from amorphous solid dispersions in water-insoluble polymer carriers: Effects of swelling capacity and interplay between partition and diffusion. Int J Pharm 2020; 581:119292. [DOI: 10.1016/j.ijpharm.2020.119292] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/25/2020] [Accepted: 03/29/2020] [Indexed: 11/25/2022]
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15
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Antifouling and antibacterial behaviors of capsaicin-based pH responsive smart coatings in marine environments. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 108:110361. [DOI: 10.1016/j.msec.2019.110361] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/12/2019] [Accepted: 10/22/2019] [Indexed: 12/14/2022]
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16
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Zhu J, Li Q, Che Y, Liu X, Dong C, Chen X, Wang C. Effect of Na 2CO 3 on the Microstructure and Macroscopic Properties and Mechanism Analysis of PVA/CMC Composite Film. Polymers (Basel) 2020; 12:polym12020453. [PMID: 32075180 PMCID: PMC7077660 DOI: 10.3390/polym12020453] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/11/2020] [Accepted: 02/12/2020] [Indexed: 01/31/2023] Open
Abstract
Polyvinyl alcohol (PVA)/carboxyl methyl cellulose sodium (CMC)/Na2CO3 composite films with different contents of Na2CO3 were prepared by blending and solution-casting. The effect of Na2CO3 on the microstructure of PVA/CMC composite film was analyzed by Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), differential scanning calorimetry (DSC), and atomic force microscopy (AFM). Its macroscopic properties were analyzed by water sorption, solubility, and dielectric constant tests. The results show that the microstructure of PVA/CMC/Na2CO3 composite films was different from that of PVA and PVA/CMC composite films. In addition, compared to PVA and PVA/CMC composite films, the water sorption of PVA/CMC/Na2CO3 composite films relatively increased, the solubility in water significantly decreased, and the dielectric properties significantly improved. All these results indicate that the hydrogen bonding interaction between PVA and CMC increased and the crystallinity of PVA decreased after the addition of Na2CO3. This was also a direct factor leading to increased water sorption, decreased solubility, and enhanced dielectric properties. The reaction mechanism of PVA, CMC, and Na2CO3 is proposed to further evaluate the effect of Na2CO3 on the microstructure and macroscopic properties of PVA/CMC/Na2CO3 composite films.
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Affiliation(s)
- Jufang Zhu
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200000, China; (J.Z.); (X.L.); (C.D.); (X.C.); (C.W.)
| | - Qiuying Li
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200000, China; (J.Z.); (X.L.); (C.D.); (X.C.); (C.W.)
- Correspondence:
| | - Yanchao Che
- Shanxi Novofluo New Material Science and Technology Co., LTD, Jinzhong 030600, China;
| | - Xingchen Liu
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200000, China; (J.Z.); (X.L.); (C.D.); (X.C.); (C.W.)
| | - Chengcheng Dong
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200000, China; (J.Z.); (X.L.); (C.D.); (X.C.); (C.W.)
| | - Xinyu Chen
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200000, China; (J.Z.); (X.L.); (C.D.); (X.C.); (C.W.)
| | - Chao Wang
- School of Material Science and Engineering, East China University of Science and Technology, 130 Meilong Rd, Shanghai 200000, China; (J.Z.); (X.L.); (C.D.); (X.C.); (C.W.)
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17
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Saeaeh K, Thummarungsan N, Paradee N, Choeichom P, Phasuksom K, Lerdwijitjarud W, Sirivat A. Soft and highly responsive multi-walled carbon nanotube/pullulan hydrogel composites as electroactive materials. Eur Polym J 2019. [DOI: 10.1016/j.eurpolymj.2019.109231] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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18
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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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19
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Rukmani SJ, Lin P, Andrew JS, Colina CM. Molecular Modeling of Complex Cross-Linked Networks of PEGDA Nanogels. J Phys Chem B 2019; 123:4129-4138. [PMID: 31038311 DOI: 10.1021/acs.jpcb.9b01622] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Poly(ethylene glycol) (PEG)-based nanogels are attractive for biomedical applications due to their biocompatibility, versatile end group chemistry, and ability to sterically shield encapsulated drug molecules. The characteristics of a hydrogel network govern the encapsulation and efficient delivery of drug molecules for a target application. A molecular-level description of network topology can complement experimental investigations to understand its effects on the structural properties of these nanogels. In this work, atomistic molecular simulations of heterogeneous, nonideal PEG-diacrylate (PEGDA) nanogels are presented. The effects of cross-linking density and topological features on the structural properties of PEGDA nanogels were studied. The average functionality was controlled to systematically study the effect of cross-linking density on the radius of gyration, shape, and mesh size of the nanogels. For a given average functionality, the impact of distinct network topologies on the structural properties was also studied. The aspect ratios, based on the gyration tensor, were calculated to characterize the shapes of these nanogels for different topologies. Nanogel structures with higher cross-linking densities showed a globular shape, while structures with lower cross-linking density showed shape anisotropy. The distribution and connectivity of the cross-linked junctions played a key role in determining the size and shape anisotropy of PEGDA nanogels; the number of unreacted chain ends and their connectivity directly affected the anisotropy. The mesh size, denoted by the limiting "free volume element" present in the nanogel samples, does not show a significant change with increasing average functionality. This work provides insight into the structural properties of heterogeneous hydrogels that aid the design of nonideal nanogel networks for a targeted drug delivery application.
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20
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Charron PN, Braddish TA, Oldinski RA. PVA-gelatin hydrogels formed using combined theta-gel and cryo-gel fabrication techniques. J Mech Behav Biomed Mater 2019; 92:90-96. [PMID: 30665114 PMCID: PMC6387851 DOI: 10.1016/j.jmbbm.2019.01.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/10/2018] [Accepted: 01/05/2019] [Indexed: 10/27/2022]
Abstract
Poly(vinyl alcohol) (PVA) is a synthetic, biocompatible polymer that has been widely studied for use in bioengineered tissue scaffolds due to its relatively high strength, creep resistance, water retention, and porous structure. However, PVA hydrogels traditionally exhibit low percent elongation and energy dissipation. PVA material and mechanical properties can be fine-tuned by controlling the physical, non-covalent crosslinks during hydrogel formation through various techniques; PVA scaffolds were modified with gelatin, a natural collagen derivative also capable of forming reversible hydrogen bonds. Blending in gelatin and poly(ethylene glycol) (PEG) with PVA prior to solidification formed a highly organized hydrogel with improved toughness and dynamic elasticity. Theta-gels were formed from the solidification of warm solutions and the phase separation of high molecular weight gelatin and PVA from a low molecular PEG porogen upon cooling. While PVA-gelatin hydrogels can be synthesized in this manner, the hydrogels exhibited low toughness with increased elasticity. Thus, theta-gels were additionally processed using cryo-gel fabrication techniques, which involved freezing theta-gels, lyophilizing and re-hydrating. The result was a stronger, more resilient material. We hypothesized that the increased formation of physical hydrogen bonds between the PVA and gelatin allowed for the combination of a stiffer material with energy dissipation characteristics. Rheological data suggested significant changes in the storage moduli of the new PVA-gelatin theta-cryo-gels. Elastic modulus, strain to failure, hysteresis and resilience were studied through uniaxial tension and dynamic mechanical analysis in compression.
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Affiliation(s)
- Patrick N Charron
- Department of Mechanical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Tess A Braddish
- Department of Mechanical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA
| | - Rachael A Oldinski
- Department of Mechanical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA; Bioengineering Program, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA; Department of Electrical and Biomedical Engineering, College of Engineering and Mathematical Sciences, University of Vermont, Burlington, VT 05405, USA; Materials Science Program, Graduate College, University of Vermont, Burlington, VT 05405, USA.
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21
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Angelova LV, Matarrese C, Fratini E, Weiss RG, Dei L, Carretti E. Chelating agents in aqueous, partially-hydrolyzed, poly(vinyl acetate) dispersions crosslinked with borax. Physicochemical characterization and an application. Colloids Surf A Physicochem Eng Asp 2018. [DOI: 10.1016/j.colsurfa.2018.07.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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22
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Yavuz G, Zille A, Seventekin N, Souto AP. Structural coloration of chitosan coated cellulose fabrics by electrostatic self-assembled poly (styrene-methyl methacrylate-acrylic acid) photonic crystals. Carbohydr Polym 2018; 193:343-352. [DOI: 10.1016/j.carbpol.2018.03.084] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 03/17/2018] [Accepted: 03/25/2018] [Indexed: 11/26/2022]
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23
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Majer G, Southan A. Adenosine triphosphate diffusion through poly(ethylene glycol) diacrylate hydrogels can be tuned by cross-link density as measured by PFG-NMR. J Chem Phys 2018; 146:225101. [PMID: 29166037 DOI: 10.1063/1.4984979] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The diffusion of small molecules through hydrogels is of great importance for many applications. Especially in biological contexts, the diffusion of nutrients through hydrogel networks defines whether cells can survive inside the hydrogel or not. In this contribution, hydrogels based on poly(ethylene glycol) diacrylate with mesh sizes ranging from ξ = 1.1 to 12.9 nm are prepared using polymers with number-average molecular weights between Mn = 700 and 8000 g/mol. Precise measurements of diffusion coefficients D of adenosine triphosphate (ATP), an important energy carrier in biological systems, in these hydrogels are performed by pulsed field gradient nuclear magnetic resonance. Depending on the mesh size, ξ, and on the polymer volume fraction of the hydrogel after swelling, ϕ, it is possible to tune the relative ATP diffusion coefficient D/D0 in the hydrogels to values between 0.14 and 0.77 compared to the ATP diffusion coefficient D0 in water. The diffusion coefficients of ATP in these hydrogels are compared with predictions of various mathematical expressions developed under different model assumptions. The experimental data are found to be in good agreement with the predictions of a modified obstruction model or the free volume theory in combination with the sieving behavior of the polymer chains. No reasonable agreement was found with the pure hydrodynamic model.
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Affiliation(s)
- Günter Majer
- Max Planck Institute for Intelligent Systems, Heisenbergstr. 3, 70569 Stuttgart, Germany
| | - Alexander Southan
- Institute of Interfacial Process Engineering and Plasma Technology IGVP, University of Stuttgart, Nobelstr. 12, 70569 Stuttgart, Germany
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24
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Liu EY, Jung S, Weitz DA, Yi H, Choi CH. High-throughput double emulsion-based microfluidic production of hydrogel microspheres with tunable chemical functionalities toward biomolecular conjugation. LAB ON A CHIP 2018; 18:323-334. [PMID: 29242870 DOI: 10.1039/c7lc01088e] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chemically functional hydrogel microspheres hold significant potential in a range of applications including biosensing, drug delivery, and tissue engineering due to their high degree of flexibility in imparting a range of functions. In this work, we present a simple, efficient, and high-throughput capillary microfluidic approach for controlled fabrication of monodisperse and chemically functional hydrogel microspheres via formation of double emulsion drops with an ultra-thin oil shell as a sacrificial template. This method utilizes spontaneous dewetting of the oil phase upon polymerization and transfer into aqueous solution, resulting in poly(ethylene glycol) (PEG)-based microspheres containing primary amines (chitosan, CS) or carboxylates (acrylic acid, AA) for chemical functionality. Simple fluorescent labelling of the as-prepared microspheres shows the presence of abundant, uniformly distributed and readily tunable functional groups throughout the microspheres. Furthermore, we show the utility of chitosan's primary amine as an efficient conjugation handle at physiological pH due to its low pKa by direct comparison with other primary amines. We also report the utility of these microspheres in biomolecular conjugation using model fluorescent proteins, R-phycoerythrin (R-PE) and green fluorescent protein (GFPuv), via tetrazine-trans-cyclooctene (Tz-TCO) ligation for CS-PEG microspheres and carbodiimide chemistry for AA-PEG microspheres, respectively. The results show rapid coupling of R-PE with the microspheres' functional groups with minimal non-specific adsorption. In-depth protein conjugation kinetics studies with our microspheres highlight the differences in reaction and diffusion of R-PE with CS-PEG and AA-PEG microspheres. Finally, we demonstrate orthogonal one-pot protein conjugation of R-PE and GFPuv with CS-PEG and AA-PEG microspheres via simple size-based encoding. Combined, these results represent a significant advancement in the rapid and reliable fabrication of monodisperse and chemically functional hydrogel microspheres with tunable properties.
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Affiliation(s)
- Eric Y Liu
- Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts 02155, USA.
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25
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Electrically controlled release of ibuprofen from conductive poly(3-methoxydiphenylamine)/crosslinked pectin hydrogel. Eur J Pharm Sci 2018; 112:20-27. [DOI: 10.1016/j.ejps.2017.10.043] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 10/24/2017] [Accepted: 10/30/2017] [Indexed: 12/20/2022]
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26
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Zhou Y, Li J, Zhang Y, Dong D, Zhang E, Ji F, Qin Z, Yang J, Yao F. Establishment of a Physical Model for Solute Diffusion in Hydrogel: Understanding the Diffusion of Proteins in Poly(sulfobetaine methacrylate) Hydrogel. J Phys Chem B 2017; 121:800-814. [DOI: 10.1021/acs.jpcb.6b10355] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
| | - Junjie Li
- Department
of Advanced Interdisciplinary Studies, Institute of Basic Medical
Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, Beijing 100850, China
| | | | | | | | | | | | - Jun Yang
- The
Key Laboratory of Bioactive Materials, Ministry of Education, College
of Life Science, Nankai University, Tianjin 300071, China
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27
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Liu EY, Jung S, Yi H. Improved Protein Conjugation with Uniform, Macroporous Poly(acrylamide-co-acrylic acid) Hydrogel Microspheres via EDC/NHS Chemistry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:11043-11054. [PMID: 27690459 DOI: 10.1021/acs.langmuir.6b02591] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
We demonstrate a robust and tunable micromolding method to fabricate chemically functional poly(acrylamide-co-acrylic acid) (p(AAm-co-AA)) hydrogel microspheres with uniform dimensions and controlled porous network structures for rapid biomacromolecular conjugation. Specifically, p(AAm-co-AA) microspheres with abundant carboxylate functional groups are fabricated via surface-tension-induced droplet formation in patterned poly(dimethylsiloxane) molds and photoinduced radical polymerization. To demonstrate the chemical functionality, we enlisted rapid EDC/NHS (1-ethyl-3-(3-(dimethylamino)propyl)carbodiimide (EDC) and N-hydroxysuccinimide (NHS)) chemistry for fluorescent labeling of the microspheres with small-molecule dye fluorescein glycine amide. Epifluorescence imaging results illustrate the uniform incorporation of carboxylate groups within the microspheres and rapid conjugation kinetics. Furthermore, protein conjugation results using red fluorescent protein R-phycoerythrin demonstrate the highly porous nature of the microspheres as well as the utility of the microspheres and the EDC/NHS scheme for facile biomacromolecular conjugation. Combined, these results illustrate the significant potential for our fabrication-conjugation strategy in the development of biofunctionalized polymeric hydrogel microparticles toward rapid biosensing, bioprocess monitoring, and biodiagnostics.
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Affiliation(s)
- Eric Y Liu
- Department of Chemical and Biological Engineering, Tufts University , Medford, Massachusetts 02155, United States
| | - Sukwon Jung
- Department of Chemical and Biological Engineering, Tufts University , Medford, Massachusetts 02155, United States
| | - Hyunmin Yi
- Department of Chemical and Biological Engineering, Tufts University , Medford, Massachusetts 02155, United States
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28
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Vidal MM, Gil MH, Delgadillo I, Chamarro JA. Swelling and Thermal Properties of Poly(Vinyl Alcohol) Containing Hemoglobin Membranes. J BIOACT COMPAT POL 2016. [DOI: 10.1177/088391159901400304] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Poly(vinyl alcohol) (PVA), a hydrophilic polymer bearing hydroxyl functional groups, readily forms gels on the addition of a bifunctional agent such as glutaraldehyde. This gelation is caused by the formation of acetal bonds between the aldehyde groups and the hydroxyl groups, in the presence of HCL. The crosslink density is easily controlled by changing the concentration of glutaraldehyde, offering a way to control the total water content and, consequently, the permeability. Strong transparent films were obtained by drying these gels. These were suitable for supporting biologically active molecules, providing a viable, better alternative to the usual PVA gels which are physically crosslinked. To establish the relationship between their thermal properties and the occurrence of the physical or chemical gelling, their water vapor sorption and thermal behavior were investigated and compared. PVA/glutaraldehyde membranes were prepared with immobilized hemoglobin for bilirubin analysis. Assisted by the respective equilibrium swelling ratio and thermal stability data, it was found that, for these particular PVA/hemoglobin membranes, the occurrence of either chemical or physical crosslinking is mainly determined by the Hb/HCl ratio.
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Affiliation(s)
- M. M.B. Vidal
- Depart. Eng. Química, Universidade de Coimbra, 3000 Coimbra, Portugal
| | - M. H. Gil
- Depart. Eng. Química, Universidade de Coimbra, 3000 Coimbra, Portugal
| | - I. Delgadillo
- Depart. Química, Universidade de Aveiro, 3800 Aveiro, Portugal
| | - J. Alonso Chamarro
- Grupo de Sensores y Biosensores, Depart. Química, UAB, 08193 Bellaterra, Spain
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29
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Pairatwachapun S, Paradee N, Sirivat A. Controlled release of acetylsalicylic acid from polythiophene/carrageenan hydrogel via electrical stimulation. Carbohydr Polym 2016; 137:214-221. [DOI: 10.1016/j.carbpol.2015.10.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/22/2015] [Accepted: 10/09/2015] [Indexed: 11/15/2022]
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30
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Miao T, Miller EJ, McKenzie C, Oldinski RA. Physically crosslinked polyvinyl alcohol and gelatin interpenetrating polymer network theta-gels for cartilage regeneration. J Mater Chem B 2015; 3:9242-9249. [PMID: 32262923 DOI: 10.1039/c5tb00989h] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Theta-gels are hydrogels that form during the solidification and phase separation of two dislike polymers, in which a low molecular weight polymer behaves as a porogen and is removed through dialysis. For this study, interpenetrating polymer network (IPN) hydrogels were formed between polyvinyl alcohol (PVA) and gelatin using theta-gel fabrication techniques, i.e., in the presence of a porogen. The addition of gelatin to a PVA theta-gel, formed with a porogen, polyethylene glycol (PEG), created macro-porous hydrogels, and increased shear storage moduli and elastic moduli, compared to PVA-gelatin scaffold controls. A reduction in PVA crystallinity was verified by Fourier transform infrared (FTIR) spectroscopy in hydrogels fabricated using a porogen, i.e., PVA-PEG-gelatin, compared to PVA, PVA-PEG, or PVA-gelatin hydrogels alone. Van Geison staining confirmed the retention of gelatin after dialysis. A range of hydrogel moduli was achieved by optimizing PVA concentration, molecular weight, and gelatin concentration. PVA-gelatin hydrogels maintained primary human mesenchymal stem cell (MSC) viability. Soft (∼10 kPa) and stiff (∼100 kPa) PVA-gelatin hydrogels containing type II collagen significantly increased glycosaminoglycan (GAG) production compared to controls. PVA-gelatin hydrogels, formed using theta-gel techniques, warrant further investigation as articular cartilage tissue engineering scaffolds.
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Affiliation(s)
- Tianxin Miao
- Bioengineering Program, University of Vermont, Burlington, VT 05405, USA.
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31
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32
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Tang C, Saquing CD, Sarin PK, Kelly RM, Khan SA. Nanofibrous membranes for single-step immobilization of hyperthermophilic enzymes. J Memb Sci 2014. [DOI: 10.1016/j.memsci.2014.08.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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33
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Rao S, Lu S, Guo Z, Li Y, Chen D, Xiang Y. A light-powered bio-capacitor with nanochannel modulation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:5846-5850. [PMID: 25043512 DOI: 10.1002/adma.201401321] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 05/19/2014] [Indexed: 06/03/2023]
Abstract
An artificial bio-capacitor system is established, consisting of the proton-pump protein proteorhodopsin and a modified alumina nanochannel, inspired by the capacitor-like behavior of plasma membranes realized through the cooperation of ion-pump and ion-channel proteins. Capacitor-like features of this simplified system are realized and identified, and the photocurrent duration time can be modulated by nanochannel modification to obtain favorable square-wave currents.
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Affiliation(s)
- Siyuan Rao
- Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China
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34
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Environmental sensitive hydrogel for purification of waste water: part 1: synthesis and characterization. Polym Bull (Berl) 2014. [DOI: 10.1007/s00289-014-1097-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Evans SM, Litzenberger AL, Ellenberger AE, Maneval JE, Jablonski EL, Vogel BM. A microfluidic method to measure small molecule diffusion in hydrogels. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 35:322-34. [DOI: 10.1016/j.msec.2013.10.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 09/25/2013] [Accepted: 10/29/2013] [Indexed: 01/04/2023]
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36
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Hernández S, Papp JK, Bhattacharyya D. Iron-Based Redox Polymerization of Acrylic Acid for Direct Synthesis of Hydrogel/Membranes, and Metal Nanoparticles for Water Treatment. Ind Eng Chem Res 2014; 53:1130-1142. [PMID: 24954975 PMCID: PMC4061718 DOI: 10.1021/ie403353g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Functionalized polymer materials with ion exchange groups and integration of nano-structured materials is an emerging area for catalytic and water pollution control applications. The polymerization of materials such as acrylic acid often requires persulfate initiator and a high temperature start. However, is generally known that metal ions accelerate such polymerizations starting from room temperature. If the metal is properly selected, it can be used in environmental applications adding two advantages simultaneously. This paper deals with this by polymerizing acrylic acid using iron as accelerant and its subsequent use for nanoparticle synthesis in hydrogel and PVDF membranes. Characterizations of hydrogel, membranes and nanoparticles were carried out with different techniques. Nanoparticles sizes of 30-60 nm were synthesized. Permeability and swelling measurements demonstrate an inverse relationship between hydrogel mesh size (6.30 to 8.34 nm) and membrane pores (222 to 110 nm). Quantitative reduction of trichloroethylene/chloride generation by Fe/Pd nanoparticles in hydrogel/membrane platforms was also performed.
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Affiliation(s)
- Sebastián Hernández
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0046
| | - Joseph K. Papp
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0046
| | - Dibakar Bhattacharyya
- Department of Chemical and Materials Engineering, University of Kentucky, Lexington, KY 40506-0046
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37
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Farooqui N, Myung D, Koh W, Masek M, Dalal R, Carrasco MR, Noolandi J, Frank CW, Ta CN. Histological Processing of pH-Sensitive Hydrogels Used in Corneal Implant Applications. J Histotechnol 2013. [DOI: 10.1179/his.2007.30.3.157] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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38
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Yuan H, Ren J, Cheng L, Shen L. Preparation and characterization of a poly(vinyl alcohol)/tetraethoxysilane ultrafiltration membrane by a sol-gel method. J Appl Polym Sci 2013. [DOI: 10.1002/app.39502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | - Liang Cheng
- Chemical Engineering Research Center; East China University of Science and Technology; Shanghai; 200237; China
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39
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Kutyła MJ, Boehm MW, Stokes JR, Shaw PN, Davies NM, McGeary RP, Tuke J, Ross BP. Cyclodextrin-crosslinked poly(acrylic acid): adhesion and controlled release of diflunisal and fluconazole from solid dosage forms. AAPS PharmSciTech 2013; 14:301-11. [PMID: 23307066 PMCID: PMC3581673 DOI: 10.1208/s12249-012-9903-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Accepted: 11/29/2012] [Indexed: 11/30/2022] Open
Abstract
The controlled release of diflunisal and fluconazole from tablets made of novel polymers, poly(acrylic acid) (PAA) crosslinked with either β-cyclodextrin (βCD) or hydroxypropyl-βCD (HPβCD), was investigated and Carbopol 934P (Carbopol) was used as a highly crosslinked PAA for comparison. Diflunisal strongly associates with βCD-PAA and HPβCD-PAA polymers (Ka of 486 and 6,055 M(-1) respectively); thus, it was physically mixed into the conjugates and also precomplexed to identify whether decomplexation has any influence on release kinetics. Fluconazole has poor complexing ability (Ka of 34 M(-1) with HPβCD-PAA); thus, it was only tested as a physical mixture. Swelling and adhesion studies were conducted on all tablet combinations and adhesivity of the CD-PAA polymer tablets was maintained. Diflunisal release was much slower from HPβCD-PAA tablets than from βCD-PAA, suggesting that a higher degree of complexation retards release. The precomplexed diflunisal release was also slower than the physically mixed diflunisal of the corresponding conjugate. The release closely followed zero-order kinetics for HPβCD-PAA, but was more sigmoidal for βCD-PAA and especially Carbopol. Conversely, poorly associating fluconazole released in almost exactly the same way across both polymers and Carbopol, indicating that the release kinetics of poorly associating drugs are not influenced by the presence of cyclodextrins. In view of the varying profiles and release rates shown with diflunisal for the different polymers, the fluconazole data support the concept that adequate complexation can indeed modulate the release kinetics of drugs.
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Affiliation(s)
- Marguerite J. Kutyła
- />School of Pharmacy, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Michael W. Boehm
- />School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Jason R. Stokes
- />School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072 Australia
| | - P. Nicholas Shaw
- />School of Pharmacy, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Nigel M. Davies
- />School of Pharmacy, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Ross P. McGeary
- />School of Pharmacy, The University of Queensland, Brisbane, QLD 4072 Australia
- />School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072 Australia
| | - Jonathan Tuke
- />School of Mathematical Sciences, University of Adelaide, Adelaide, SA 5005 Australia
| | - Benjamin P. Ross
- />School of Pharmacy, The University of Queensland, Brisbane, QLD 4072 Australia
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40
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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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41
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Radiation synthesis and characterisation of the network structure of natural/synthetic double-network superabsorbent polymers. Radiat Phys Chem Oxf Engl 1993 2012. [DOI: 10.1016/j.radphyschem.2011.11.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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42
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Rahimi N, Molin DG, Cleij TJ, van Zandvoort MA, Post MJ. Electrosensitive Polyacrylic Acid/Fibrin Hydrogel Facilitates Cell Seeding and Alignment. Biomacromolecules 2012; 13:1448-57. [DOI: 10.1021/bm300161r] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | - Thomas J. Cleij
- Institute for Materials Research
(IMO), Hasselt University, 3590 Diepenbeek,
Belgium
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43
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Zhou W, Lu P, Sun L, Ji C, Dong J. Diffusion and binding of 5-fluorouracil in non-ionic hydrogels with interpolymer complexation. Int J Pharm 2012; 431:53-60. [PMID: 22531850 DOI: 10.1016/j.ijpharm.2012.04.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 03/24/2012] [Accepted: 04/08/2012] [Indexed: 12/25/2022]
Abstract
Hydrogen-bonded interpolymer complexes can be used for development of novel dosage forms. In this study, two types of crosslinked hydrogels, copolymer networks of N-vinyl pyrrolidone and acrylamide (PVP-co-PAM) and interpenetrating polymer networks (IPN) composed of crosslinked PVP-co-PAM and poly(vinyl alcohol) (PVA), were synthesized at three different degrees of crosslinking. The side chain groups in such polymers can form non-ionic complexes through H-bonding, resulting in additional "crosslinks" in the hydrogels. Both kinds of hydrogels have significantly larger swelling sensitivities than the networks formed with ionizable side chains. In the IPNs, introduction of the PVA chains into the PVP-co-PAM networks raises the permeability, indicating more open pores. The permeability decreases with the increasing degree of crosslinking of the copolymer. For probing the drug binding in the hydrogels, Fourier transform infrared spectra (FTIR) difference spectroscopy indicated the presence of significant H-bonding interactions between 5-fluorouracil (5-FU) and the side chains of the polymers. Such interactions are larger in the PVP-co-PAM copolymers than in the IPN hydrogels, thereby causing an additional source of the slower release kinetics in the copolymer hydrogels as revealed by the Peppas model, albeit both types of the networks followed a non-Fickian transport mechanism.
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Affiliation(s)
- Wenbin Zhou
- School of Chemistry and Chemical Engineering, Shaoxing University, Shaoxing 312000, China
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44
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Paradee N, Sirivat A, Niamlang S, Prissanaroon-Ouajai W. Effects of crosslinking ratio, model drugs, and electric field strength on electrically controlled release for alginate-based hydrogel. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:999-1010. [PMID: 22354328 DOI: 10.1007/s10856-012-4571-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Accepted: 01/27/2012] [Indexed: 05/31/2023]
Abstract
The drug release characteristics of calcium alginate hydrogels, (Ca-Alg), under an electric field assisted transdermal drug delivery system were systematically investigated. The Ca-Alg hydrogels were prepared by the solution-casting using CaCl(2) as a crosslinking agent. The diffusion coefficients and the release mechanism of the anionic model drugs, benzoic acid and tannic acid, and a cationic model drug, folic acid on the Ca-Alg hydrogels were determined and investigated using a modified Franz-Diffusion cell in an MES buffer solution of pH 5.5, at a temperature of 37°C, for 48 h. The influences of the crosslinking ratio, -the mole of the crosslinking agent to the mole of the alginate monomer-mesh size, model drug size, drug charge, electric field strength, and electrode polarity were systematically studied. The drug diffusion coefficient decreased with an increasing crosslinking ratio and drug size for all of the model drugs. The drug diffusion coefficient is precisely controlled by an applied electric field and the electrode polarity depending on the drug charge, suitable for a tailor-made transdermal drug delivery system.
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Affiliation(s)
- Nophawan Paradee
- Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand
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45
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Effect of monomeric sequence on transport properties of d-glucose and ascorbic acid in poly(VP-co-HEMA) hydrogels with various water contents: molecular dynamics simulation approach. Theor Chem Acc 2012. [DOI: 10.1007/s00214-012-1206-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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46
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Xue FF, Yuan DD, Sahasrabudhe A, Biswas S, Wang P, Tang XY, Chen D, Yuan R, Roy S. Supramolecular thermo aero-able gelators (STAGs) for synthesis of hydrogels. NEW J CHEM 2012. [DOI: 10.1039/c2nj40423k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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47
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Benavidez TE, Baruzzi AM. Comparative behavior of glucose oxidase and oxalate oxidase immobilized in mucin/chitosan hydrogels for biosensors applications. POLYMER 2012. [DOI: 10.1016/j.polymer.2011.12.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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48
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Uslu I, Cetin SS, Aytimur A, Yuceyurt S, Erdal MO. Synthesis and Properties of Boron Doped NaxCo2O4 Nanocrystalline Ceramics. J Inorg Organomet Polym Mater 2011. [DOI: 10.1007/s10904-011-9644-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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49
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Rahman M, Dey K, Parvin F, Sharmin N, Khan RA, Sarker B, Nahar S, Ghoshal S, Khan MA, Billah MM, Zaman HU, Chowdhury AMS. Preparation and Characterization of Gelatin-Based PVA Film: Effect of Gamma Irradiation. INT J POLYM MATER PO 2011. [DOI: 10.1080/00914037.2010.551365] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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50
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Liu S, Jiang M, Ye S, Xu X, Lu P, Dong J. Biodegradable poly(glycerin citrate) and its application to controlled release of theophylline. J Appl Polym Sci 2011. [DOI: 10.1002/app.34886] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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