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Arabpour Z, Salehi M, An S, Moghtader A, Anwar KN, Baharnoori SM, Shah RJ, Abedi F, Djalilian AR. Exploring Hydrogel Nanoparticle Systems for Enhanced Ocular Drug Delivery. Gels 2024; 10:589. [PMID: 39330191 PMCID: PMC11430953 DOI: 10.3390/gels10090589] [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: 08/01/2024] [Revised: 09/08/2024] [Accepted: 09/10/2024] [Indexed: 09/28/2024] Open
Abstract
Drug delivery to the ocular system is affected by anatomical factors like the corneal epithelium, blinking reflex, aqueous blood barrier, and retinal blood barrier, which lead to quick removal from the site and inefficient drug delivery. Developing a drug delivery mechanism that targets specific eye tissue is a major hurdle for researchers. Our study examines the challenges of drug absorption in these pathways. Hydrogels have been researched as a suitable delivery method to overcome some obstacles. These are developed alone or in conjunction with other technologies, such as nanoparticles. Many polymer hydrogel nanoparticle systems utilizing both natural and synthetic polymers have been created and investigated; each has pros and cons. The complex release mechanism of encapsulated agents from hydrogel nanoparticles depends on three key factors: hydrogel matrix swelling, drug-matrix chemical interactions, and drug diffusion. This mechanism exists regardless of the type of polymer. This study provides an overview of the classification of hydrogels, release mechanisms, and the role of controlled release systems in pharmaceutical applications. Additionally, it highlights the integration of nanotechnology in ocular disease therapy, focusing on different types of nanoparticles, including nanosuspensions, nanoemulsions, and pharmaceutical nanoparticles. Finally, the review discusses current commercial formulations for ocular drug delivery and recent advancements in non-invasive techniques. The objective is to present a comprehensive overview of the possibilities for enhancing ocular medication delivery through hydrogel nanoparticle systems.
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Affiliation(s)
- Zohreh Arabpour
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud 3614773955, Iran
| | - Seungwon An
- Clinical Stem Cell Laboratory, UI Blood & Marrow Transplant Program, University of Illinois Hospital and Health Sciences System, Chicago, IL 60612, USA
| | - Amirhossein Moghtader
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
| | - Khandaker N Anwar
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
| | - Seyed Mahbod Baharnoori
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
| | - Rohan Jaimin Shah
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
| | - Farshad Abedi
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
| | - Ali R Djalilian
- Department of Ophthalmology and Visual Science, University of Illinois, Chicago, IL 60612, USA
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2
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Balla E, Zamboulis A, Klonos P, Kyritsis A, Barmpalexis P, Bikiaris DΝ. Synthesis of novel interpenetrated network for ocular co-administration of timolol maleate and dorzolamide hydrochloride drugs. Int J Pharm 2023; 646:123439. [PMID: 37742821 DOI: 10.1016/j.ijpharm.2023.123439] [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: 06/28/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
In the present work, novel interpenetrated networks (IPNs) of [2-(methacryloyloxy)ethyl]dimethyl-(3-sulfopropyl)ammonium hydroxide) (SBMA) and poly(vinyl alcohol) (PVA) were prepared for the ocular co-administration of timolol maleate (TIM) and dorzolamide hydrochloride (DORZ), two drugs widely used for the treatment of glaucoma. The successful polymerization of SBMA, in the presence of PVA, led to the formation of semi-interpenetrated pSBMA-PVA networks (IPNs), in the form of sponges, exhibiting intrinsic antimicrobial properties attributed to SBMA. Fourier-transform infrared spectroscopy (FTIR) was utilized to confirm the successful synthesis of the IPNs. Further assessments, including contact angle and water sorption measurements, highlighted their significant hydrophilicity, a feature that makes them suitable for ocular applications. Differential scanning calorimetry (DSC) measurements indicated that PVA serves as a plasticizer, while an assessment of the water sorption capacity of these materials suggested that although the incorporation of PVA results in slightly less hydrophilic materials, the prepared sponges still remain sufficiently hydrophilic for ocular use. Following their characterization, the optimal pSBMA-PVA IPN was used to encapsulate TIM and DORZ. Irritation tests, performed using the HET-CAM method, confirmed that the drug-loaded sponges were safe and potentially well-tolerated for ophthalmic use. Finally, the co-release study for the two drugs revealed a sustained release pattern in both cases, while drug release from the sponges was primarily controlled by diffusion.
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Affiliation(s)
- Evangelia Balla
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Alexandra Zamboulis
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Panagiotis Klonos
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece; Department of Physics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
| | - Apostolos Kyritsis
- Department of Physics, National Technical University of Athens, Zografou Campus, 15780 Athens, Greece
| | - Panagiotis Barmpalexis
- Laboratory of Pharmaceutical Technology, Department of Pharmacy, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios Ν Bikiaris
- Laboratory of Polymer Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
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Li B, Qin H, Ma M, Xu X, Zhou M, Hao W, Hu Z. Preparation of novel β-CD/P(AA- co-AM) hydrogels by frontal polymerization. RSC Adv 2023; 13:5667-5673. [PMID: 36816088 PMCID: PMC9929618 DOI: 10.1039/d2ra07649g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/08/2023] [Indexed: 02/17/2023] Open
Abstract
In this paper, betaine (Bet) was used as a hydrogen bond acceptor (HBA), and acrylic acid (AA) and acrylamide (AM) were used as hydrogen bond donors (HBD) and mixed to form a deep eutectic solvent (DES). Different concentrations of β-cyclodextrin (β-CD) were dispersed in the DES, and a novel β-CD/P(AA-co-AM) hydrogel was prepared by frontal polymerization (FP). The characteristic structure and morphology of the hydrogels were analyzed using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM), and the properties of the hydrogels were investigated. The results show that the mechanical properties of the hydrogel were improved by β-CD acting as a second cross-linking agent in the polymerization process, thus increasing the cross-link density of the hydrogel. Because the carboxyl groups contained in the acrylic acid dissociate under alkaline conditions, the composite hydrogel shows excellent pH responsiveness under alkaline conditions. Tetracycline hydrochloride was used as a drug model to test the drug loading and drug release performance of the hydrogels. With the increase of β-CD content, the loading capacity of the hydrogels for tetracycline hydrochloride gradually increased. The data of drug release indicated that the hydrogel has good drug delivery performance and has promising applications in drug delivery systems and other areas.
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Affiliation(s)
- Bin Li
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
| | - Haibo Qin
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
| | - Ming Ma
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
| | - Xiaojia Xu
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
| | - Mengjing Zhou
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
| | - Wenrui Hao
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
| | - Zhigang Hu
- School of Mechanical Engineering, Wuhan Polytechnic University Wuhan Hubei 430023 China
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Jansook P, Hnin HM, Loftsson T, Stefánsson E. Cyclodextrin-based formulation of carbonic anhydrase inhibitors for ocular delivery - A review. Int J Pharm 2021; 606:120955. [PMID: 34332063 DOI: 10.1016/j.ijpharm.2021.120955] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/15/2021] [Accepted: 07/26/2021] [Indexed: 10/20/2022]
Abstract
Carbonic anhydrase inhibitors (CAIs) are used as systemic and topical agents for lowering intraocular pressure (IOP) in patients with glaucoma. Owing to the wide distribution of CAs and their physiological functions in various tissues, systemic administration of CAIs may lead to unwanted side effects. Thus, exploration of drugs targeting the specific CA isoenzyme in ocular tissues and application of the same as topical eye drops would be desirable. However, the anatomical and physiological barriers of the eyes can limit drug availability at the site. The very low aqueous solubility of CAI agents can further hamper drug bioavailability, consequently resulting in insufficient therapeutic efficacy. Solubilization of drugs using cyclodextrin (CD) complexes can enhance both solubility and permeability of the drugs. The use of CD for such purposes and development and testing of topical CAI eye drops containing CD have been discussed in detail. Further, pharmaceutical nanotechnology platforms were discussed in terms of investigation of their IOP-lowering efficacies. Future prospects in drug discovery and the use of CD nanoparticles and CD-based nanocarriers to develop potential topical CAI formulations have also been described here.
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Affiliation(s)
- Phatsawee Jansook
- Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand.
| | - Hay Marn Hnin
- Faculty of Pharmaceutical Sciences, Chulalongkorn University, 254 Phyathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Thorsteinn Loftsson
- Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, IS-107 Reykjavik, Iceland
| | - Einar Stefánsson
- Department of Ophthalmology, Faculty of Medicine, National University Hospital, University of Iceland, Landspitalinn, IS-101 Reykjavik, Iceland
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Torres-Luna C, Fan X, Domszy R, Hu N, Wang NS, Yang A. Hydrogel-based ocular drug delivery systems for hydrophobic drugs. Eur J Pharm Sci 2020; 154:105503. [DOI: 10.1016/j.ejps.2020.105503] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/18/2020] [Accepted: 07/31/2020] [Indexed: 01/07/2023]
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Characterization and Evaluation of Ternary Complexes of Ascorbic Acid with γ-Cyclodextrin and Poly(vinyl Alcohol). Int J Mol Sci 2020; 21:ijms21124399. [PMID: 32575742 PMCID: PMC7352738 DOI: 10.3390/ijms21124399] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 02/07/2023] Open
Abstract
Ascorbic acid (AA) is a general antioxidant used in aqueous pharmaceutical formulations. However, in aqueous solutions, AA is unstable and easily oxidized when exposed to air, light and/or heat. Cyclodextrins are well known for their ability to form inclusion complexes with various compounds to improve their solubility and stability. Previous studies demonstrate that cyclodextrins preserve the antioxidant capacity of AA but data for γ-cyclodextrin (γCD) have not been reported. Poly(vinyl alcohol) (PVA) is a hydrophilic polymer widely used as a drug matrix in various pharmaceutical fields, but its application for drug stabilization is limited. This study aimed to investigate the protective ability of γCD on AA through the formation of ternary complexes with PVA. Binary (i.e., AA/γCD, AA/PVA and γCD/PVA) and ternary (i.e., AA/γCD/PVA) complexes were first confirmed. It was reported that those complexes were formed through interactions between the heterocyclic ring of AA, hydroxyl group of PVA and hydrophobic cavity of γCD. The hydrodynamic diameter of complexes was then studied. It was found that the diameter of γCD/PVA complexes increased with respect to the concentration of γCD. Higher γCD concentrations also resulted in increasing hydrodynamic diameters of the ternary complex. The presence of AA in ternary complexes interfered with the aggregation tendency of γCD/PVA binary complexes. Furthermore, the antioxidant capacity of AA in binary and ternary complexes was investigated. It was found that the presence of γCD preserved the antioxidant activity of AA, whereas PVA showed a contrasting effect. The influence of γCD and PVA concentration on antioxidant capacity was then studied through central composite design (CCD). Even though the concentration of γCD significantly affected the inhibition efficiency of the ternary complex, the insignificant influence of PVA could not be ignored. A promising protective ternary complex should consist of an optimized concentration of PVA and a high concentration of γCD.
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Zhou X, Hou C, Chang TL, Zhang Q, Liang JF. Controlled released of drug from doubled-walled PVA hydrogel/PCL microspheres prepared by single needle electrospraying method. Colloids Surf B Biointerfaces 2020; 187:110645. [DOI: 10.1016/j.colsurfb.2019.110645] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/17/2019] [Accepted: 11/11/2019] [Indexed: 12/14/2022]
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8
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Ailincai D, Gavril G, Marin L. Polyvinyl alcohol boric acid - A promising tool for the development of sustained release drug delivery systems. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 107:110316. [PMID: 31761179 DOI: 10.1016/j.msec.2019.110316] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 10/01/2019] [Accepted: 10/14/2019] [Indexed: 01/04/2023]
Abstract
The paper deals with the design and investigation of the morphology, in vitro drug release and biocompatibility of some new formulations based on polyvinyl alcohol boric acid (PVAB) and diclofenac sodium salt (DCF), with the aim to explore the ability of PVAB to act as a matrix for controlled drug delivery systems. A series of three formulations was obtained by mixing the drug and the polymeric matrix in different mass ratios, with high drug content from 10% w/w to 30% w/w. Their structural and supramolecular characterization, performed by FTIR spectroscopy and X-ray diffraction, revealed important physical interactions between the drug and the polymeric matrix. The morphological data, obtained by X-ray diffraction, polarized optical microscopy and scanning electron microscopy revealed the presence of the drug into the PVAB polymeric matrix, as micrometric polycrystals with a mean diameter in the range 10-15 μm, depending on the drug/polymer ratio. The investigation of their surface peculiarities indicated highly hydrophilic surfaces with a water to air contact angle between 29.9 and 41.4 deg and a surface free energy of 45.6-54.2 N/m2. The in vitro release kinetics was monitored by UV-VIS spectroscopy and the cytotoxic effect was investigated in vitro on fibroblasts and HeLa cells. The PVAB proved excellent cytocompatibility, a relative cell viability of the fibroblasts higher than 90% being recorded for concentrations of PVAB up to 7.5% w/v. The drug has been strongly anchored into the electron deficient PVAB matrix, fact which led to its prolonged release up to 5 days. These findings recommend PVAB as a versatile tool for the development of sustained release drug delivery systems with real chances to cross the gap from theory to applications.
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Affiliation(s)
- Daniela Ailincai
- "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania.
| | - Gabriela Gavril
- "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
| | - Luminita Marin
- "Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania
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9
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Tummala GK, Lopes VR, Mihranyan A, Ferraz N. Biocompatibility of Nanocellulose-Reinforced PVA Hydrogel with Human Corneal Epithelial Cells for Ophthalmic Applications. J Funct Biomater 2019; 10:E35. [PMID: 31375008 PMCID: PMC6787653 DOI: 10.3390/jfb10030035] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 07/28/2019] [Accepted: 07/30/2019] [Indexed: 11/16/2022] Open
Abstract
Transparent composite hydrogel in the form of a contact lens made from poly(vinyl alcohol) (PVA) and cellulose nanocrystals (CNCs) was subjected to in vitro biocompatibility evaluation with human corneal epithelial cells (HCE-2 cells). The cell response to direct contact with the hydrogels was investigated by placing the samples on top of confluent cell layers and evaluating cell viability, morphology, and cell layer integrity subsequent to 24 h culture and removal of the hydrogels. To further characterize the lens-cell interactions, HCE-2 cells were seeded on the hydrogels, with and without simulated tear fluid (STF) pre-conditioning, and cell viability and morphology were evaluated. Furthermore, protein adsorption on the hydrogel surface was investigated by incubating the materials with STF, followed by protein elution and quantification. The hydrogel material was found to have affinity towards protein adsorption, most probably due to the interactions between the positively charged lysozyme and the negatively charged CNCs embedded in the PVA matrix. The direct contact experiment demonstrated that the physical presence of the lenses did not affect corneal epithelial cell monolayers in terms of integrity nor cell metabolic activity. Moreover, it was found that viable corneal cells adhered to the hydrogel, showing the typical morphology of epithelial cells and that such response was not influenced by the STF pre-conditioning of the hydrogel surface. The results of the study confirm that PVA-CNC hydrogel is a promising ophthalmic biomaterial, motivating future in vitro and in vivo biocompatibility studies.
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Affiliation(s)
- Gopi Krishna Tummala
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| | - Viviana R Lopes
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| | - Albert Mihranyan
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, Sweden
| | - Natalia Ferraz
- Nanotechnology and Functional Materials, Department of Engineering Sciences, Uppsala University, Box 534, 751 21 Uppsala, Sweden.
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10
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Zhang W, Jin X, Li H, Wei CX, Wu CW. Onion-structure bionic hydrogel capsules based on chitosan for regulating doxorubicin release. Carbohydr Polym 2019; 209:152-160. [DOI: 10.1016/j.carbpol.2019.01.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/09/2019] [Accepted: 01/09/2019] [Indexed: 01/30/2023]
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11
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Musgrave CSA, Fang F. Contact Lens Materials: A Materials Science Perspective. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E261. [PMID: 30646633 PMCID: PMC6356913 DOI: 10.3390/ma12020261] [Citation(s) in RCA: 141] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/06/2019] [Accepted: 01/07/2019] [Indexed: 12/22/2022]
Abstract
More is demanded from ophthalmic treatments using contact lenses, which are currently used by over 125 million people around the world. Improving the material of contact lenses (CLs) is a now rapidly evolving discipline. These materials are developing alongside the advances made in related biomaterials for applications such as drug delivery. Contact lens materials are typically based on polymer- or silicone-hydrogel, with additional manufacturing technologies employed to produce the final lens. These processes are simply not enough to meet the increasing demands from CLs and the ever-increasing number of contact lens (CL) users. This review provides an advanced perspective on contact lens materials, with an emphasis on materials science employed in developing new CLs. The future trends for CL materials are to graft, incapsulate, or modify the classic CL material structure to provide new or improved functionality. In this paper, we discuss some of the fundamental material properties, present an outlook from related emerging biomaterials, and provide viewpoints of precision manufacturing in CL development.
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Affiliation(s)
| | - Fengzhou Fang
- Centre of MicroNano Manufacturing Technology (MNMT-Dublin), University College Dublin, D14 YH57 Dublin, Ireland.
- State Key Laboratory of Precision Measuring Technology and Instruments, Centre of MicroNano Manufacturing Technology (MNMT), Tianjin University, Tianjin 300072, China.
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12
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Taktak F, Öğen Y. Preparation and characterization of novel silk fibroin/2-(N,N-dimethylamino)ethyl methacrylate based composite hydrogels with enhanced mechanical properties for controlled release of cefixime. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2017. [DOI: 10.1080/10601325.2017.1320750] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Fulya Taktak
- Department of Chemical Engineering, Engineering Faculty, Uşak University, Uşak, Turkey
- Department of Polymer Science and Technology, Graduate School of Natural and Applied Sciences, Uşak University, Uşak, Turkey
| | - Yaşasın Öğen
- Department of Polymer Science and Technology, Graduate School of Natural and Applied Sciences, Uşak University, Uşak, Turkey
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13
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Thatiparti TR, Juric D, von Recum HA. Pseudopolyrotaxane Formation in the Synthesis of Cyclodextrin Polymers: Effects on Drug Delivery, Mechanics, and Cell Compatibility. Bioconjug Chem 2017; 28:1048-1058. [DOI: 10.1021/acs.bioconjchem.6b00721] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thimma R. Thatiparti
- Department of Biomedical
Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Dajan Juric
- Department of Biomedical
Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
| | - Horst A. von Recum
- Department of Biomedical
Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, United States
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Woranuch S, Pangon A, Puagsuntia K, Subjalearndee N, Intasanta V. Starch-based and multi-purpose nanofibrous membrane for high efficiency nanofiltration. RSC Adv 2017. [DOI: 10.1039/c7ra07484k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of the present work is to develop nanofibrous membranes from rice-flour based nanofibers containing PVA for high efficiency filtration.
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Affiliation(s)
- Sarekha Woranuch
- Nano Functional Textile Laboratory
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Autchara Pangon
- Nano Functional Textile Laboratory
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Kantapat Puagsuntia
- Nano Functional Textile Laboratory
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Nakarin Subjalearndee
- Nano Functional Textile Laboratory
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
| | - Varol Intasanta
- Nano Functional Textile Laboratory
- National Nanotechnology Center (NANOTEC)
- National Science and Technology Development Agency (NSTDA)
- Thailand
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15
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Sun X, Yu Z, Cai Z, Yu L, Lv Y. Voriconazole Composited Polyvinyl Alcohol/Hydroxypropyl-β-Cyclodextrin Nanofibers for Ophthalmic Delivery. PLoS One 2016; 11:e0167961. [PMID: 27974859 PMCID: PMC5156571 DOI: 10.1371/journal.pone.0167961] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/23/2016] [Indexed: 12/25/2022] Open
Abstract
Voriconazole (VRC) incorporated in composited polyvinyl alcohol (PVA)/hydroxypropyl-β-cyclodextrin (HPβCD) blended nanofibers were produced via electrospinning for efficient ophthalmic delivery. The VRC loading capacity increased with increasing HPβCD content. The optimal solution for electrospinning consisted of 8% (w/v) PVA, 4% (w/v) HPβCD and 0.5% (w/v) VRC. The nanofibers exhibited bead-free average fiber diameters of 307±31 nm and VRC was released in vitro in a sustained manner. The VRC nanofibers were characterized by infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and scanning electron microscopy (SEM). The proton nuclear magnetic resonance (1H-NMR) was used to analyze the molar ratio of HPβCD/VRC in the nanofibers. Compared with a VRC solution, the nanofibers significantly prolonged the half life, and increased the bioavailability of VRC in rabbit tears. No obvious signs of irritation were observed after application in the conjunctival sac. VRC nanofibers are promising for ophthalmic drug delivery and further pharmacodynamics studies are needed.
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Affiliation(s)
- Xiaoyi Sun
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang, China
| | - Zhenwei Yu
- Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhengyuan Cai
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang, China
| | - Lingyan Yu
- Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yuanyuan Lv
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang, China
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16
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Nair AV, Raman M, Doble M. Cyclic β-(1→3) (1→6) glucan/carrageenan hydrogels for wound healing applications. RSC Adv 2016. [DOI: 10.1039/c6ra23386d] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In the present study, cyclic β-(1→3) (1→6)glucan/carrageenan hydrogels (CBG/Car) were prepared and theirin vivowound healing potential in rats and their ability to encapsulate a hydrophobic drug, ciprofloxacin, were studied.
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Affiliation(s)
- Anju V. Nair
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Maya Raman
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
| | - Mukesh Doble
- Department of Biotechnology
- Bhupat and Jyoti Mehta School of Biosciences
- Indian Institute of Technology Madras
- Chennai 600036
- India
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17
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Oktay B, Kayaman-Apohan N, Erdem-Kuruca S, Süleymanoğlu M. Fabrication of collagen immobilized electrospun poly (vinyl alcohol) scaffolds. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Burcu Oktay
- Department of Chemistry; Marmara University; 34722 Goztepe-Istanbul Turkey
| | | | - Serap Erdem-Kuruca
- Istanbul Medical Faculty, Department of Physiology; Istanbul University; 34390 Capa-Istanbul Turkey
| | - Mediha Süleymanoğlu
- Istanbul Medical Faculty, Department of Physiology; Istanbul University; 34390 Capa-Istanbul Turkey
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Phan CM, Subbaraman L, Jones L. Contact lenses for antifungal ocular drug delivery: a review. Expert Opin Drug Deliv 2014; 11:537-46. [PMID: 24472171 DOI: 10.1517/17425247.2014.882315] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Fungal keratitis, a potentially blinding disease, has been difficult to treat due to the limited number of approved antifungal drugs and the taxing dosing regimen. Thus, the development of a contact lens (CL) as an antifungal drug delivery platform has the potential to improve the treatment of fungal keratitis. A CL can serve as a drug reservoir to continuously release drugs to the cornea, while limiting drug loss through tears, blinking, drainage and non-specific absorption. AREAS COVERED This review will provide a summary of currently available methods for delivering antifungal drugs from commercial and model CLs, including vitamin E coating, impregnated drug films, cyclodextrin-functionalized hydrogels, polyelectrolyte hydrogels and molecular imprinting. This review will also highlight some of the main factors that influence antifungal drug delivery with CLs. EXPERT OPINION Several novel CL materials have been developed, capable of extended drug release profiles with a wide range of antifungal drugs lasting from 8 h to as long as 21 days. However, there are factors, such as first-order release kinetics, effectiveness of continuous drug release, microbial resistance, ocular toxicity and potential complications from inserting a CL in an infected eye, that still need to be addressed before commercial applications can be realized.
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Affiliation(s)
- Chau-Minh Phan
- Centre for Contact Lens Research, School of Optometry and Vision Science , 200 University Avenue West, Waterloo, ON, N2L 3G1 , Canada +1 519 888 4567 Extn: 36547 ;
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Das S, Subuddhi U. Exploring poly(vinyl alcohol) hydrogels containing drug-cyclodextrin complexes as controlled drug delivery systems. J Appl Polym Sci 2013. [DOI: 10.1002/app.40318] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Subhraseema Das
- Department of Chemistry; National Institute of Technology; Rourkela 769008 India
| | - Usharani Subuddhi
- Department of Chemistry; National Institute of Technology; Rourkela 769008 India
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Xu J, Zhang L, Zhang Y, Li T, Huo G. Simultaneous interpenetrating silicone hydrogel based on radical/addition polymerization for extended release of ocular therapeutics. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 25:121-35. [DOI: 10.1080/09205063.2013.841793] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Phan CM, Subbaraman L, Liu S, Gu F, Jones L. In vitro uptake and release of natamycin Dex-b-PLA nanoparticles from model contact lens materials. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2013; 25:18-31. [PMID: 24007402 DOI: 10.1080/09205063.2013.830914] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
PURPOSE To evaluate the uptake and release of the antifungal agent natamycin encapsulated within poly(D,L-lactide)-dextran nanoparticles (Dex-b-PLA NPs) from model contact lens (CL) materials. METHODS Six model CL materials (gel 1:poly(hydroxyethyl methacrylate, pHEMA); gel 2:85% pHEMA: 15% [Tris(trimethylsiloxy)silyl]-propyl methacrylate (TRIS); gel 3: 75% pHEMA: 25% TRIS; gel 4: 85% N,N dimethylacrylamide (DMAA): 15% TRIS; gel 5:75% DMAA: 25% TRIS; and gel 6: DMAA) were prepared using a photoinitiation procedure. The gels were incubated in: (1) natamycin dissolved in deionized (DI) water and (2) natamycin encapsulated within Dex-b-PLA NPs in dimethylsulfoxide/DI water. Natamycin release from these materials was monitored using UV-visible spectrophotometry at 304 nm over 7 d. RESULTS Natamycin uptake by all model CL materials increased between 1 and 7 d (p < 0.001). The uptake of natamycin-NPs was higher than the uptake of the drug alone in DI water (p < 0.05). Drug release was higher in materials containing DMAA than pHEMA (p < 0.05). All gels loaded with natamycin-NPs also released more drug compared to gels soaked with natamycin in DI water (p < 0.001). After 1 h, CL materials loaded with natamycin alone released 28-82% of the total drug release. With the exception of gel 6, this burst released was reduced to 21-54% for CL materials loaded with natamycin-NPs. CONCLUSIONS Model CL materials loaded with natamycin-Dex-b-PLA NPs were able to release natamycin for up to 12 h under infinite sink conditions. DMAA-TRIS materials may be more suitable for drug delivery of natamycin due to the higher drug release observed with these materials.
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Affiliation(s)
- Chau-Minh Phan
- a Centre for Contact Lens Research, School of Optometry and Vision Science , University of Waterloo , 200 University Avenue West, Waterloo , ON , N2L 3G1 , Canada
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Cusola O, Tabary N, Belgacem MN, Bras J. Cyclodextrin functionalization of several cellulosic substrates for prolonged release of antibacterial agents. J Appl Polym Sci 2012. [DOI: 10.1002/app.38748] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Guziewicz N, Best A, Perez-Ramirez B, Kaplan DL. Lyophilized silk fibroin hydrogels for the sustained local delivery of therapeutic monoclonal antibodies. Biomaterials 2011; 32:2642-50. [PMID: 21216004 DOI: 10.1016/j.biomaterials.2010.12.023] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2010] [Accepted: 12/14/2010] [Indexed: 01/09/2023]
Abstract
The development of sustained delivery systems compatible with protein therapeutics continues to be a significant unmet need. A lyophilized silk fibroin hydrogel matrix (lyogel) for the sustained release of pharmaceutically relevant monoclonal antibodies is described. Sonication of silk fibroin prior to antibody incorporation avoids exposing the antibody to the sol-gel transition inducing shear stress. Fourier Transform Infrared (FTIR) analysis showed no change in silk structural composition between hydrogel and lyogel or with increasing silk fibroin concentration. Antibody release from hydrogels occurred rapidly over 10 days regardless of silk concentration. Upon lyophilization, sustained antibody release was observed over 38 days from lyogels containing 6.2% (w/w) silk fibroin and above. In 3.2% (w/w) silk lyogels, antibody release was comparable to hydrogels. Swelling properties of lyogels followed a similar threshold behavior. Lyogels at 3.2% (w/w) silk recovered approximately 90% of their fluid mass upon rehydration, while approximately 50% fluid recovery was observed at 6.2% (w/w) silk and above. Antibody release was primarily governed by hydrophobic/hydrophilic silk-antibody interactions and secondarily altered by the hydration resistance of the lyogel. Hydration resistance was controlled by altering β-sheet (crystalline) density of the matrix. The antibody released from lyogels maintained biological activity. Silk lyogels offer an advantage as a delivery matrix over other hydrogel materials for the slow release of the loaded protein, making lyogels suitable for long-term sustained release applications.
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Affiliation(s)
- Nicholas Guziewicz
- BioFormulations Development, Genzyme Corporation, 1 Mountain Road, P.O. Box 9322, Framingham, MA 01701-9322, USA
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White C, Tieppo A, Byrne M. Controlled drug release from contact lenses: a comprehensive review from 1965-present. J Drug Deliv Sci Technol 2011. [DOI: 10.1016/s1773-2247(11)50062-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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