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Dewan M, Adhikari A, Dutta K, Chattopadhyay D. Impact of Poly (Vinyl Alcohol) on The Thermogelation Property and Drug Release Profile of Ophthalmic Formulations Based on Poloxamer 407. ChemistrySelect 2023. [DOI: 10.1002/slct.202203528] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- Mitali Dewan
- Department of Polymer Science & Technology University of Calcutta 92 A.P.C. Road Kolkata 700009 India
- Department of Chemistry Shahid Matangini Hazra Govt.General Degree College for Women Chakshrikrishnapur Kulberia, Tamluk, Purba Medinipur West Bengal -721649 India
| | - Arpita Adhikari
- Department of Polymer Science & Technology University of Calcutta 92 A.P.C. Road Kolkata 700009 India
| | - Koushik Dutta
- Department of Polymer Science & Technology University of Calcutta 92 A.P.C. Road Kolkata 700009 India
| | - Dipankar Chattopadhyay
- Department of Polymer Science & Technology University of Calcutta 92 A.P.C. Road Kolkata 700009 India
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2
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Dupre--Demorsy A, Kurowska I, Balayssac S, Hennetier M, Ric A, Bourdon V, Ando T, Ajiro H, Coutelier O, Destarac M. RAFT polymerisation of N-vinylformamide and the corresponding double hydrophilic block copolymers. Polym Chem 2022. [DOI: 10.1039/d2py00925k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Polyvinylamine-based double hydrophilic block copolymers are synthesised from RAFT polymerisation of N-vinylformamide.
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Affiliation(s)
- Alexis Dupre--Demorsy
- Laboratoire des IMRCP, UMR 5623, Université Paul Sabatier, CNRS, 31062 Toulouse, France
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Izabela Kurowska
- Laboratoire des IMRCP, UMR 5623, Université Paul Sabatier, CNRS, 31062 Toulouse, France
- Faculty of Chemistry, University of Bialystok, Ciolkowskiego 1k, 15-245 Bialystok, Poland
- Doctoral School of Exact and Natural Sciences, University of Bialystok, Ciolkowskiego 1k, 15-245 Bialystok, Poland
| | - Stéphane Balayssac
- Laboratoire des IMRCP, UMR 5623, Université Paul Sabatier, CNRS, 31062 Toulouse, France
| | - Marie Hennetier
- Université de Toulouse, Institut National Polytechnique de Toulouse – Ecole d'Ingénieur de Purpan, Département Sciences Agronomiques et Agroalimentaires, 31076, Toulouse Cedex 03, France
| | - Audrey Ric
- Université de Toulouse, Institut National Polytechnique de Toulouse – Ecole d'Ingénieur de Purpan, Département Sciences Agronomiques et Agroalimentaires, 31076, Toulouse Cedex 03, France
| | - Valérie Bourdon
- Institut de Chimie de Toulouse, UAR 2599, Université Paul Sabatier, CNRS, 31062 Toulouse, France
| | - Tsuyoshi Ando
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Hiroharu Ajiro
- Division of Materials Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Olivier Coutelier
- Laboratoire des IMRCP, UMR 5623, Université Paul Sabatier, CNRS, 31062 Toulouse, France
| | - Mathias Destarac
- Laboratoire des IMRCP, UMR 5623, Université Paul Sabatier, CNRS, 31062 Toulouse, France
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de Oliveira RA, Muralha FP, Grupenmacher AT, de Araújo Morandim-Giannetti A, Bersanetti PA, Maia M, Magalhães Junior O. Biocompatibility of polyvinyl alcohol/trisodium trimetaphosphate as vitreous substitute in experimental vitrectomy model in rabbits. J Biomed Mater Res B Appl Biomater 2021; 110:460-466. [PMID: 34328263 DOI: 10.1002/jbm.b.34923] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 06/12/2021] [Accepted: 07/08/2021] [Indexed: 11/06/2022]
Abstract
Synthetic hydrogels have been proposed as vitreous substitutes recently. This study aims to evaluate the biocompatibility of polyvinyl alcohol (PVA) crosslinked with trisodium trimetaphosphate (SMTP) hydrogel in rabbit vitrectomized eyes. Seven animals were submitted to pars plana vitrectomy and the vitreous was replaced by PVA/SMTP hydrogel. Optical coherence tomography, fluorescein angiogram, clinical, and electrophysiological (ERG) examinations were analyzed at baseline, on postoperative days 7 and 30. The fellow eye was used as the control group. Hydrogel opacification was observed and ERG recordings were reduced in the hydrogel group in rod response, b-wave cone response and flicker. A histological analysis showed retinal disorganization, presence of multinucleated cells, and intraretinal hydrogel particles. The PVA/SMTP hydrogel showed poor biocompatibility. Novel biomaterials compounds should be analyzed in vivo.
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Affiliation(s)
- Ramon Antunes de Oliveira
- Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Felipe Picanço Muralha
- Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Alex Treiger Grupenmacher
- Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | | | - Maurício Maia
- Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Octaviano Magalhães Junior
- Department of Ophthalmology and Visual Sciences, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil
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Nawaz HA, Schröck K, Schmid M, Krieghoff J, Maqsood I, Kascholke C, Kohn-Polster C, Schulz-Siegmund M, Hacker MC. Injectable oligomer-cross-linked gelatine hydrogels via anhydride-amine-conjugation. J Mater Chem B 2021; 9:2295-2307. [PMID: 33616150 DOI: 10.1039/d0tb02861d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Injectable gelatine-based hydrogels are valuable tools for drug and cell delivery due to their extracellular matrix-like properties that can be adjusted by the degree of cross-linking. We have established anhydride-containing oligomers for the cross-linking of gelatine via anhydride-amine-conjugation. So far, this conversion required conditions not compatible with cell encapsulation or in vivo injection. In order to overcome this limitation, we developed an array of quarter-oligomers varying in comonomer composition and contents of reactive anhydride units reactive towards amine groups under physiological conditions. The oligomers were of low molecular weight (Mn < 5 kDa) with a high degree of chemically intact anhydrides. Chemical comonomer composition was determined by 1H-NMR. Dissolutions experiments confirmed improved hydrophilicity of the synthesized oligomers over our established compositions. Injectable formulations are described utilizing cytocompatible concentrations of constituent materials and proton-scavenging base. Degree of cross-linking and stiffness of injectable hydrogels were controlled by composition. The gels hold promise as injectable drug or cell carrier and as bioink.
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Affiliation(s)
- Hafiz Awais Nawaz
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Abdul Qadir Jillani road, Lahore, Pakistan
| | - Kathleen Schröck
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Maximilian Schmid
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Jan Krieghoff
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Iram Maqsood
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Christian Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutics and Biopharmaceutics, Heinrich-Heine-Universität, Universitätsstraße 1, Düsseldorf, 40225 Düsseldorf, Germany.
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Yadav I, Purohit SD, Singh H, Bhushan S, Yadav MK, Velpandian T, Chawla R, Hazra S, Mishra NC. Vitreous substitutes: An overview of the properties, importance, and development. J Biomed Mater Res B Appl Biomater 2020; 109:1156-1176. [PMID: 33319466 DOI: 10.1002/jbm.b.34778] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 10/27/2020] [Accepted: 11/28/2020] [Indexed: 11/12/2022]
Abstract
Vitreous or vitreous humor is a complex transparent gel that fills the space between the lens and retina of an eye and acts as a transparent medium that allows light to pass through it to reach the photoreceptor layer (retina) of the eye. The vitreous humor is removed in ocular surgery (vitrectomy) for pathologies like retinal detachment, macular hole, diabetes-related vitreous hemorrhage detachment, and ocular trauma. Since the vitreous is not actively regenerated or replenished, there is a need for a vitreous substitute to fill the vitreous cavity to provide a temporary or permanent tamponade to the retina following some vitreoretinal surgeries. An ideal vitreous substitute could probably be left inside the eye forever. The vitreous humor is transparent, biocompatible, viscoelastic and highly hydrophilic; polymeric hydrogels with these properties can be a potential candidate to be used as vitreous substitutes. To meet the tremendous demand for the vitreous substitute, many scientists all over the world have developed various kinds of vitreous substitutes or tamponade agent. Vitreous substitutes, whatsoever developed till date, are associated with several advantages and disadvantages, and there is no ideal vitreous substitute available till date. This review highlights the polymer-based vitreous substitutes developed so far, along with their advantages and limitations. The gas-based and oil-based substitutes have also been discussed but very briefly.
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Affiliation(s)
- Indu Yadav
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Shiv Dutt Purohit
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Hemant Singh
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Sakchi Bhushan
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Manoj Kumar Yadav
- School of Computing and Electrical Engineering, Indian Institute of Technology Mandi, Mandi, India
| | - Thirumurthy Velpandian
- Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - Rohan Chawla
- Dr Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - Saugata Hazra
- Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India
| | - Narayan Chandra Mishra
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
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Qureshi D, Choudhary B, Mohanty B, Sarkar P, Anis A, Cerqueira MA, Banerjee I, Maji S, Pal K. Graphene Oxide Increases Corneal Permeation of Ciprofloxacin Hydrochloride from Oleogels: A Study with Cocoa Butter-Based Oleogels. Gels 2020; 6:E43. [PMID: 33238509 PMCID: PMC7709633 DOI: 10.3390/gels6040043] [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: 10/04/2020] [Revised: 11/16/2020] [Accepted: 11/18/2020] [Indexed: 12/14/2022] Open
Abstract
In this work, oleogels of cocoa butter (CB), rice bran oil (RBO), and graphene oxide (GO) were prepared. The prepared oleogels were subjected to various characterization techniques such as bright-field microscopy, X-ray diffraction (XRD), crystallization kinetics, differential scanning calorimetry (DSC), and mechanical studies. The influence of increasing GO content on the in vitro drug release and ex vivo corneal permeation of the model drug (ciprofloxacin HCl-CPH) from the oleogels was also investigated. Bright-field micrographs showed that increment in GO content reduced the size of the globular particles of CB. XRD analysis revealed that CB was crystallized in its β' and β polymorphic forms in the oleogels, which was in agreement with thermal studies. The mechanical characterization demonstrated that the presence of GO improved the elastic nature and stress-bearing properties of the oleogels. Moreover, GO altered the crystallization kinetics of CB in the oleogels in a composition-dependent manner. The in vitro release of CPH from the oleogels occurred through either Fickian diffusion or fat network relaxation or a combination thereof. Furthermore, the inclusion of GO enhanced the ex vivo permeation of CPH molecules across the caprine cornea. Hence, we concluded that the prepared oleogels could be explored as potential delivery systems for ophthalmic applications.
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Affiliation(s)
- Dilshad Qureshi
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela 769008, India;
| | - Barbiee Choudhary
- Amity Institute of Biotechnology, Amity University, Noida 201301, India;
| | | | - Preetam Sarkar
- Department of Food Process Engineering, National Institute of Technology, Rourkela 769008, India;
| | - Arfat Anis
- SABIC Polymer Research Center, Department of Chemical Engineering, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Miguel A. Cerqueira
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal;
| | - Indranil Banerjee
- Department of Bioscience and Bioengineering, Indian Institute of Technology, Jodhpur 600036, India;
| | - Samarendra Maji
- Department of Chemistry, SRM Institute of Science and Technology, Kattankulathur 603203, India
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering, National Institute of Technology, Rourkela 769008, India;
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Mohanty B, Pal K, Quereshi D, Nayak SK, Rathnam VSS, Banerjee I, Anis A, Barik CS, Sarkar P, Rout SK. Oleogels Based on Palmitic Acid and Safflower Oil: Novel Formulations for Ocular Drug Delivery of Voriconazole. EUR J LIPID SCI TECH 2020. [DOI: 10.1002/ejlt.201900288] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Kunal Pal
- Department of Biotechnology and Medical Engineering National Institute of Technology Rourkela‐769008 India
| | - Dilshad Quereshi
- Department of Biotechnology and Medical Engineering National Institute of Technology Rourkela‐769008 India
| | - Suraj K. Nayak
- Department of Biotechnology and Medical Engineering National Institute of Technology Rourkela‐769008 India
| | | | - Indranil Banerjee
- Department of Biotechnology and Medical Engineering National Institute of Technology Rourkela‐769008 India
| | - Arfat Anis
- Department of Chemical Engineering King Saud University Riyadh‐11362 Saudi Arabia
| | | | - Preetam Sarkar
- Department of Food Process Engineering National Institute of Technology Rourkela‐769008 India
| | - Susanta Kumar Rout
- Science & Technology Department Odisha Secretariat Bhubaneswar‐751001 Odisha India
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Lin D, Lei L, Shi S, Li X. Stimulus‐Responsive Hydrogel for Ophthalmic Drug Delivery. Macromol Biosci 2019; 19:e1900001. [DOI: 10.1002/mabi.201900001] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 03/29/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Deqing Lin
- Institute of Biomedical EngineeringSchool of Ophthalmology and Optometry and Eye HospitalWenzhou Medical University 270 Xueyuan Road Wenzhou 325027 P. R. China
| | - Lei Lei
- Institute of Biomedical EngineeringSchool of Ophthalmology and Optometry and Eye HospitalWenzhou Medical University 270 Xueyuan Road Wenzhou 325027 P. R. China
| | - Shuai Shi
- Institute of Biomedical EngineeringSchool of Ophthalmology and Optometry and Eye HospitalWenzhou Medical University 270 Xueyuan Road Wenzhou 325027 P. R. China
| | - Xingyi Li
- Institute of Biomedical EngineeringSchool of Ophthalmology and Optometry and Eye HospitalWenzhou Medical University 270 Xueyuan Road Wenzhou 325027 P. R. China
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Gilbert T, Alsop RJ, Babi M, Moran-Mirabal J, Rheinstädter MC, Hoare T. Nanostructure of Fully Injectable Hydrazone-Thiosuccinimide Interpenetrating Polymer Network Hydrogels Assessed by Small-Angle Neutron Scattering and dSTORM Single-Molecule Fluorescence Microscopy. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42179-42191. [PMID: 29131571 DOI: 10.1021/acsami.7b11637] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Herein, we comprehensively investigate the internal morphology of fully injectable interpenetrating networks (IPNs) prepared via coextrusion of functionalized precursor polymer solutions based on thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) and nonthermoresponsive poly(vinyl pyrrolidone) (PVP) by reactive mixing using kinetically orthogonal hydrazone and thiosuccinimide cross-linking mechanisms. Small-angle neutron scattering, probing both the full IPN as well as the individual constituent networks of the IPN using index-matching, suggests a partially mixed internal structure characterized by PNIPAM-rich domains entrapped in a clustered PVP-rich phase. This interpretation is supported by super-resolution fluorescence microscopy (direct stochastic optical reconstruction microscopy) measurements on the same gels on a different length scale, which show both the overall phase segregation typical of an IPN as well as moderate mixing of PNIPAM into the PVP-rich phase. Such a morphology is consistent with the kinetics of both gelation and phase separation in this in situ gelling system, in which gelation effectively traps a fraction of the PNIPAM in the PVP phase prior to full phase separation; by contrast, such interphase mixing is not observed in semi-IPN control hydrogels. This knowledge has significant potential for the design of an injectable hydrogel with internal morphologies optimized for particular biomedical applications.
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Affiliation(s)
- Trevor Gilbert
- Department of Chemical Engineering, McMaster University , 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada
| | | | | | | | | | - Todd Hoare
- Department of Chemical Engineering, McMaster University , 1280 Main St. W, Hamilton, Ontario L8S 4L7, Canada
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Li S, Xia Y, Qiu Y, Chen X, Shi S. Preparation and property of starch nanoparticles reinforced aldehyde-hydrazide covalently crosslinked PNIPAM hydrogels. J Appl Polym Sci 2017. [DOI: 10.1002/app.45761] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shanshan Li
- Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; 15 Beisanhuan East Road, Chaoyang District, Beijing 100029 China
| | - Yuzheng Xia
- Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; 15 Beisanhuan East Road, Chaoyang District, Beijing 100029 China
| | - Yang Qiu
- Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; 15 Beisanhuan East Road, Chaoyang District, Beijing 100029 China
| | - Xiaonong Chen
- Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; 15 Beisanhuan East Road, Chaoyang District, Beijing 100029 China
| | - Shuxian Shi
- Beijing Laboratory of Biomedical Materials; Beijing University of Chemical Technology; 15 Beisanhuan East Road, Chaoyang District, Beijing 100029 China
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Dewan M, Sarkar G, Bhowmik M, Das B, Chattoapadhyay AK, Rana D, Chattopadhyay D. Effect of gellan gum on the thermogelation property and drug release profile of Poloxamer 407 based ophthalmic formulation. Int J Biol Macromol 2017; 102:258-265. [PMID: 28390828 DOI: 10.1016/j.ijbiomac.2017.03.194] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/30/2017] [Accepted: 03/31/2017] [Indexed: 10/19/2022]
Abstract
The effect of gellan gum on the gelation behavior and in-vitro release of a specific drug named pilocarpine hydrochloride from different ophthalmic formulations based on poloxamer 407 is examined. The mixture of 0.3wt% gellan gum and 18wt% poloxamer (PM) solutions show a considerable increase in gel strength in physiological condition. Gel dissolution rate from PM based formulation is significantly decreased due to the addition of gellan gum. FTIR spectra analysis witnesses an interaction in between OH groups of two polymers which accounts for lowering in gelation temperature of PM-gellan gum based formulations. It is also observed from the cryo-SEM study that the pore size of PM gel decreases with an addition of gellan gum and in-vitro release studies indicate that PM-gellan gum based formulation retain drug better than the PM solution alone. Therefore, the developed formulation has the potential to be utilized as an in-situ ophthalmic drug carrier.
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Affiliation(s)
- Mitali Dewan
- Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India; Department of Chemistry, Shahid Matangini Hazra Govt. College for Women, Chakshrikrishnapur, Kulberia, Purba Medinipur, West Bengal -721649, India
| | - Gunjan Sarkar
- Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India
| | - Manas Bhowmik
- Huda Group of Institutions, Kanuwamari, Nagaon, Assam 782140, India
| | - Beauty Das
- Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India
| | - Atis Kumar Chattoapadhyay
- Secretary, Faculty Council For PG & UG Studies In Science, Jadavpur University, 188 Raja S. C. Mallick Road, Kolkata, West Bengal 700032, India
| | - Dipak Rana
- Department of Chemical and Biological Engineering, Industrial Membrane Research Institute, University of Ottawa, 161 Louis Pasteur St., Ottawa, ON, K1N 6N5, Canada
| | - Dipankar Chattopadhyay
- Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
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Yu S, Li Q, Li Y, Wang H, Liu D, Yang X, Pan W. A novel hydrogel with dual temperature and pH responsiveness based on a nanostructured lipid carrier as an ophthalmic delivery system: enhanced trans-corneal permeability and bioavailability of nepafenac. NEW J CHEM 2017. [DOI: 10.1039/c7nj00112f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A schematic illustration of a novel formulation that can be instilled on the surface of eyes (A) and the results of in vivo studies (B and C).
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Affiliation(s)
- Shihui Yu
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Qi Li
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Yuenan Li
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Haiying Wang
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Dandan Liu
- School of Biomedical & Chemical Engineering
- Liaoning Institute of Science and Technology
- Benxi 117004
- P. R. China
| | - Xinggang Yang
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
| | - Weisan Pan
- Department of Pharmaceutics
- School of Pharmacy
- Shenyang Pharmaceutical University
- Shenyang 110016
- China
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Gu D, O'Connor AJ, G H Qiao G, Ladewig K. Hydrogels with smart systems for delivery of hydrophobic drugs. Expert Opin Drug Deliv 2016; 14:879-895. [PMID: 27705026 DOI: 10.1080/17425247.2017.1245290] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Smart hydrogel systems present opportunities to not only provide hydrophobic molecule encapsulation capability but to also respond to specific delivery routes. Areas covered: An overview of the design principles, preparation methods and applications of hydrogel systems for delivery of hydrophobic drugs is given. It begins with a summary of the advantages of hydrogels as delivery vehicles over other approaches, particularly macromolecular nanocarriers, before proceeding to address the design and preparation strategies and chemistry involved, with a particular focus on the introduction of hydrophobic domains into (naturally) hydrophilic hydrogels. Finally, the applications in different delivery routes are discussed. Expert opinion: Modifications to conventional hydrogels can endow them with the capability to carry hydrophobic drugs but other functions as well, such as the improved mechanical stability, which is important for long-term in vivo residence and/or self-healing properties useful for injectable delivery pathways. These modifications harness hydrophobic-hydrophobic forces, physical interactions and inclusion complexes. The lack of in-depth understanding of these interactions, currently limits more delicate and application-oriented designs. Increased efforts are needed in (i) understanding the interplay of gel formation and simultaneous drug loading; (ii) improving hydrogel systems with respect to their biosafety; and (iii) control over release mechanism and profile.
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Affiliation(s)
- Dunyin Gu
- a Department of Chemical and Biomolecular Engineering , The University of Melbourne , Parkville , Australia
| | - Andrea J O'Connor
- a Department of Chemical and Biomolecular Engineering , The University of Melbourne , Parkville , Australia
| | - Greg G H Qiao
- a Department of Chemical and Biomolecular Engineering , The University of Melbourne , Parkville , Australia
| | - Katharina Ladewig
- a Department of Chemical and Biomolecular Engineering , The University of Melbourne , Parkville , Australia
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Mehra NK, Cai D, Kuo L, Hein T, Palakurthi S. Safety and toxicity of nanomaterials for ocular drug delivery applications. Nanotoxicology 2016; 10:836-60. [PMID: 27027670 DOI: 10.3109/17435390.2016.1153165] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Multifunctional nanomaterials are rapidly emerging for ophthalmic delivery of therapeutics to facilitate safe and effective targeting with improved patient compliance. Because of their extremely high area to volume ratio, nanomaterials often have physicochemical properties that are different from those of their larger counterparts. There exists a complex relationship between the physicochemical properties (composition, size, shape, charge, roughness, and porosity) of the nanomaterials and their interaction with the biological system. The eye is a very sensitive accessible organ and is subjected to intended and unintended exposure to nanomaterials. Currently, various ophthalmic formulations are available in the market, while some are underway in preclinical and clinical phases. However, the data on safety, efficacy, and toxicology of these advanced nanomaterials for ocular drug delivery are sparse. Focus of the present review is to provide a comprehensive report on the safety, biocompatibility and toxicities of nanomaterials in the eye.
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Affiliation(s)
- Neelesh K Mehra
- a Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy , Texas A&M Health Science Center , Kingsville , TX , USA
| | - Defu Cai
- a Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy , Texas A&M Health Science Center , Kingsville , TX , USA
| | - Lih Kuo
- b Department of Medical Physiology, College of Medicine , Texas A&M Health Science Center , Temple , TX , USA ;,c Department of Surgery and Scott & White Eye Institute, College of Medicine , Texas A&M Health Science Center , Temple , TX , USA
| | - Travis Hein
- c Department of Surgery and Scott & White Eye Institute, College of Medicine , Texas A&M Health Science Center , Temple , TX , USA
| | - Srinath Palakurthi
- a Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy , Texas A&M Health Science Center , Kingsville , TX , USA
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