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Huang C, Shen Y, Zhao Y, Zhang Z, Gao S, Hong J, Xu J, Meng Q, Sun X, Sun J. Sustained release of brimonidine from polydimethylsiloxane-coating silicone rubber implant to reduce intraocular pressure in glaucoma. Regen Biomater 2023; 10:rbad041. [PMID: 37303848 PMCID: PMC10247868 DOI: 10.1093/rb/rbad041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/16/2023] [Accepted: 04/03/2023] [Indexed: 06/13/2023] Open
Abstract
Glaucoma is the leading cause of irreversible blindness, affecting 111 million people by 2040 worldwide. Intraocular pressure (IOP) is the only controllable risk factor for the disease and current treatment options seek to reduce IOP via daily taking eye drops. However, shortcomings of eye drops, such as poor bioavailability and unsatisfied therapeutic effects, may lead to inadequate patient compliance. In this study, an effective brimonidine (BRI)-loaded silicone rubber (SR) implant coated with polydimethylsiloxane (BRI@SR@PDMS) is designed and fully investigated for IOP reduction treatment. The in vitro BRI release from BRI@SR@PDMS implant reveals a more sustainable trend lasting over 1 month, with a gradually declined immediate drug concentration. The carrier materials show no cytotoxicity on human corneal epithelial cells and mice corneal epithelial cells in vitro. After administrated into rabbit's conjunctival sac, the BRI@SR@PDMS implant releases BRI in a sustained fashion and effectively reduces IOP for 18 days with great biosafety. In contrast, BRI eye drops only maintain IOP-lowering effect for 6 h. Therefore, as a substitute of eye drops, the BRI@SR@PDMS implant can be applied as a promising non-invasive platform to achieve long-term IOP-lowering in patients suffering from ocular hypertension or glaucoma.
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Affiliation(s)
| | | | | | - Zhutian Zhang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | - Shunxiang Gao
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | - Jiaxu Hong
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | - Jianjiang Xu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Shanghai Medical College, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Myopia, Fudan University, Shanghai 200031, China
- Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | | | | | - Jianguo Sun
- Correspondence address. (J.S.); (X.S.); (Q.M.)
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Tsoka M, Oikonomou P, Papadokostaki KG, Sanopoulou M. Properties of Polydimethylsiloxane Modified by Blending with Polyvinylpyrrolidone and a Poly(ethylene oxide)-Poly(propylene oxide) Triblock Copolymer. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria Tsoka
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
| | - Petros Oikonomou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
| | - Kyriaki G. Papadokostaki
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
| | - Merope Sanopoulou
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research “Demokritos”, 15310 Ag. Paraskevi, Athens, Greece
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Murphy DJ, Amssoms K, Pille G, Clarke A, O'Hara M, van Roey J, Malcolm RK. Sustained release of the candidate antiretroviral peptides T-1249 and JNJ54310516-AFP from a rod insert vaginal ring. Drug Deliv Transl Res 2018; 6:234-42. [PMID: 26787615 PMCID: PMC4854936 DOI: 10.1007/s13346-015-0273-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Administration of biomacromolecular drugs in effective quantities from conventional vaginal rings is hampered by poor drug permeability in the polymers from which rings are commonly constructed. Here, we report the formulation development and testing of rod insert rings for sustained release of the candidate antiretroviral peptides T-1249 and JNJ54310516-AFP (JNJ peptide), both of which have potential as HIV microbicides. Rod inserts were prepared comprising antiviral peptides T-1249 or JNJ peptide in combination with a hydrophilic excipient (sodium chloride, sodium glutamate, lactose or zinc acetate) dispersed at different loadings within a medical grade silicone elastomer. The inserts were tested for weight change and swelling when immersed in simulated vaginal fluid (SVF). Dye migration into the inserts was also assessed visually over 28 days. In vitro release of T-1249 and JNJ peptide from rings containing various insert types was tested. Weight change and degree of swelling of rods immersed in SVF was dependent on the type and concentration of excipient present. The rods displayed the following rank order in terms of weight change: sodium glutamate > zinc acetate ≈ sodium chloride > lactose. The weight change and degree of swelling of the inserts did not correlate with the level of dye uptake observed. In vitro release of T-1249 was improved through addition of lactose, sodium chloride and sodium glutamate, while release of JNJ peptide was improved through addition of sodium chloride or sodium glutamate. Sustained release of hydrophobic peptides can be achieved using a rod insert ring design formulated to include a hydrophilic excipient. Release rates were dependent upon the type of excipient used. The degree of release improvement with different inserts partially reflects their ability to imbibe surrounding fluid and swell in aqueous environments.
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Affiliation(s)
- Diarmaid J Murphy
- School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK.
| | - Katie Amssoms
- Janssen Research and Development, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - Geert Pille
- Janssen Research and Development, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - Aileen Clarke
- School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Marc O'Hara
- School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | - Jens van Roey
- Janssen Research and Development, Turnhoutseweg 30, 2340, Beerse, Belgium
| | - R Karl Malcolm
- School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
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Choowongapiichat S, Paradee N, Sirivat A. Refining natural rubber matrix for electrically stimulated transdermal drug delivery. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1383251] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Nophawan Paradee
- Department of Chemistry, Faculty of Science, King Mongkut’s University of Technology Thonburi, Bangkok, Thailand
| | - Anuvat Sirivat
- The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, Thailand
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Panou AI, Mantes N, Papadokostaki KG, Sanopoulou M. Solute permeability of elastomeric films containing dispersed swellable hydrophilic particles: A composite material approach. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.06.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Panou AI, Papadokostaki KG, Sanopoulou M. Release mechanisms of semipolar solutes from poly(dimethylsiloxane) elastomers: Effect of a hydrophilic additive. J Appl Polym Sci 2014. [DOI: 10.1002/app.40782] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Athanasia I. Panou
- Department of Physical Chemistry, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems; National Center for Scientific Research; “Demokritos,” 15310 Ag. Paraskevi Athens Greece
| | - Kyriaki G. Papadokostaki
- Department of Physical Chemistry, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems; National Center for Scientific Research; “Demokritos,” 15310 Ag. Paraskevi Athens Greece
| | - Merope Sanopoulou
- Department of Physical Chemistry, Institute of Advanced Materials, Physicochemical Processes, Nanotechnology and Microsystems; National Center for Scientific Research; “Demokritos,” 15310 Ag. Paraskevi Athens Greece
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Soulas DN, Sanopoulou M, Papadokostaki KG. Hydrophilic modification of silicone elastomer films: Thermal, mechanical and theophylline permeability properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:2122-30. [DOI: 10.1016/j.msec.2013.01.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2012] [Revised: 12/21/2012] [Accepted: 01/15/2013] [Indexed: 11/16/2022]
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Soulas DN, Papadokostaki KG, Sanopoulou M. Silicone rubber films modified by ethylenoxy moieties: Characterization and drug delivery properties. J Appl Polym Sci 2013. [DOI: 10.1002/app.38711] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Soulas DN, Papadokostaki KG, Panou A, Sanopoulou M. Drug Release from Poly(dimethylsiloxane)-Based Matrices: Observed and Predicted Stabilization of the Release Rate by Three-Layer Devices. Ind Eng Chem Res 2012. [DOI: 10.1021/ie300540x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dimitrios N. Soulas
- Institute of Physical Chemistry, National Centre for Scientific Research “Demokritos”, 15310 Ag. Paraskevi Attikis, Athens, Greece
| | - Kyriaki G. Papadokostaki
- Institute of Physical Chemistry, National Centre for Scientific Research “Demokritos”, 15310 Ag. Paraskevi Attikis, Athens, Greece
| | - Athanasia Panou
- Institute of Physical Chemistry, National Centre for Scientific Research “Demokritos”, 15310 Ag. Paraskevi Attikis, Athens, Greece
| | - Merope Sanopoulou
- Institute of Physical Chemistry, National Centre for Scientific Research “Demokritos”, 15310 Ag. Paraskevi Attikis, Athens, Greece
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Proxyphylline release kinetics from symmetrical three-layer silicone rubber matrices: Effect of different excipients in the outer rate-controlling layers. Int J Pharm 2012; 427:192-200. [DOI: 10.1016/j.ijpharm.2012.01.056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/25/2012] [Accepted: 01/27/2012] [Indexed: 11/19/2022]
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