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Whalen M, Akula M, McNamee SM, DeAngelis MM, Haider NB. Seeing the Future: A Review of Ocular Therapy. Bioengineering (Basel) 2024; 11:179. [PMID: 38391665 PMCID: PMC10886198 DOI: 10.3390/bioengineering11020179] [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: 12/21/2023] [Revised: 02/03/2024] [Accepted: 02/08/2024] [Indexed: 02/24/2024] Open
Abstract
Ocular diseases present a unique challenge and opportunity for therapeutic development. The eye has distinct advantages as a therapy target given its accessibility, compartmentalization, immune privilege, and size. Various methodologies for therapeutic delivery in ocular diseases are under investigation that impact long-term efficacy, toxicity, invasiveness, and delivery range. While gene, cell, and antibody therapy and nanoparticle delivery directly treat regions that have been damaged by disease, they can be limited in the duration of the therapeutic delivery and have a focal effect. In contrast, contact lenses and ocular implants can more effectively achieve sustained and widespread delivery of therapies; however, they can increase dilution of therapeutics, which may result in reduced effectiveness. Current therapies either offer a sustained release or a broad therapeutic effect, and future directions should aim toward achieving both. This review discusses current ocular therapy delivery systems and their applications, mechanisms for delivering therapeutic products to ocular tissues, advantages and challenges associated with each delivery system, current approved therapies, and clinical trials. Future directions for the improvement in existing ocular therapies include combination therapies, such as combined cell and gene therapies, as well as AI-driven devices, such as cortical implants that directly transmit visual information to the cortex.
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Affiliation(s)
- Maiya Whalen
- Department of Biology, Boston College, Chestnut Hill, MA 02467, USA
| | | | | | - Margaret M DeAngelis
- Department of Ophthalmology, Jacobs School of Medicine & Biomedical Sciences, University at Buffalo, Buffalo, NY 14203, USA
| | - Neena B Haider
- Shifa Precision, Boston, MA 02138, USA
- Department of Cell Biology, Harvard Medical School, Boston, MA 02138, USA
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Akbari E, Imani R, Shokrollahi P, Jarchizadeh R, Heidari keshel S. Hydrogel-based formulations for drug delivery to the anterior segment of the eye. J Drug Deliv Sci Technol 2023. [DOI: 10.1016/j.jddst.2023.104250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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3
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Dludla SBK, Mashabela LT, Ng’andwe B, Makoni PA, Witika BA. Current Advances in Nano-Based and Polymeric Stimuli-Responsive Drug Delivery Targeting the Ocular Microenvironment: A Review and Envisaged Future Perspectives. Polymers (Basel) 2022; 14:polym14173580. [PMID: 36080651 PMCID: PMC9460529 DOI: 10.3390/polym14173580] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Optimal vision remains one of the most essential elements of the sensory system continuously threatened by many ocular pathologies. Various pharmacological agents possess the potential to effectively treat these ophthalmic conditions; however, the use and efficacy of conventional ophthalmic formulations is hindered by ocular anatomical barriers. Recent novel designs of ophthalmic drug delivery systems (DDS) using nanotechnology show promising prospects, and ophthalmic formulations based on nanotechnology are currently being investigated due to their potential to bypass these barriers to ensure successful ocular drug delivery. More recently, stimuli-responsive nano drug carriers have gained more attention based on their great potential to effectively treat and alleviate many ocular diseases. The attraction is based on their biocompatibility and biodegradability, unique secondary conformations, varying functionalities, and, especially, the stimuli-enhanced therapeutic efficacy and reduced side effects. This review introduces the design and fabrication of stimuli-responsive nano drug carriers, including those that are responsive to endogenous stimuli, viz., pH, reduction, reactive oxygen species, adenosine triphosphate, and enzymes or exogenous stimuli such as light, magnetic field or temperature, which are biologically related or applicable in clinical settings. Furthermore, the paper discusses the applications and prospects of these stimuli-responsive nano drug carriers that are capable of overcoming the biological barriers of ocular disease alleviation and/or treatment for in vivo administration. There remains a great need to accelerate the development of stimuli-responsive nano drug carriers for clinical transition and applications in the treatment of ocular diseases and possible extrapolation to other topical applications such as ungual or otic drug delivery.
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Affiliation(s)
- Siphokazi B. K. Dludla
- Division of Pharmaceutics, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa
| | - Leshasha T. Mashabela
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria 0208, South Africa
| | - Brian Ng’andwe
- University Teaching Hospitals-Eye Hospital, Private Bag RW 1 X Ridgeway, Lusaka 10101, Zambia
| | - Pedzisai A. Makoni
- Division of Pharmacology, Faculty of Pharmacy, Rhodes University, Makhanda 6140, South Africa
- Correspondence: (P.A.M.); (B.A.W.)
| | - Bwalya A. Witika
- Department of Pharmaceutical Sciences, School of Pharmacy, Sefako Makgatho Health Sciences University, Pretoria 0208, South Africa
- Correspondence: (P.A.M.); (B.A.W.)
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Baohe Li, Li C, Jiang L, Zeng Y, Wang N. Preparation of Molecularly Imprinted Polymer Based on Calcium Acrylate and Acrylic Acid. POLYMER SCIENCE SERIES B 2022. [DOI: 10.1134/s1560090422020026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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5
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Bodoki AE, Iacob BC, Dinte E, Vostinaru O, Samoila O, Bodoki E. Perspectives of Molecularly Imprinted Polymer-Based Drug Delivery Systems in Ocular Therapy. Polymers (Basel) 2021; 13:polym13213649. [PMID: 34771205 PMCID: PMC8588458 DOI: 10.3390/polym13213649] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 12/15/2022] Open
Abstract
Although the human eye is an easily accessible sensory organ, it remains a challenge for drug administration due to the presence of several anatomical and physiological barriers which limit the access of drugs to its internal structures. Molecular imprinting technology may be considered the avant-garde approach in advanced drug delivery applications and, in particular, in ocular therapy. In fact, molecularly imprinted polymers hold the promise to compensate for the current shortcomings of the available arsenal of drug delivery systems intended for ocular therapy. The present manuscript aims to review the recent advances, the current challenges and most importantly to raise awareness on the underexplored potential and future perspectives of molecularly imprinted polymer-based drug delivery systems intended for the treatment of eye diseases.
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Affiliation(s)
- Andreea E. Bodoki
- Department of General and Inorganic Chemistry, “Iuliu Hatieganu” University of Medicine and Pharmacy, 400010 Cluj-Napoca, Romania;
| | - Bogdan-C. Iacob
- Department of Analytical Chemistry, “Iuliu Hatieganu” University of Medicine & Pharmacy, 400349 Cluj-Napoca, Romania;
| | - Elena Dinte
- Department of Pharmaceutical Technology and Biopharmaceutics, “Iuliu Hatieganu” University of Medicine & Pharmacy, 400012 Cluj-Napoca, Romania;
| | - Oliviu Vostinaru
- Department of Pharmacology, Physiology and Physiopathology, “Iuliu Hatieganu” University of Medicine & Pharmacy, 400349 Cluj-Napoca, Romania;
| | - Ovidiu Samoila
- Ophthalmology Clinic Cluj, “Iuliu Hatieganu” University of Medicine & Pharmacy, 400006 Cluj-Napoca, Romania;
| | - Ede Bodoki
- Department of Analytical Chemistry, “Iuliu Hatieganu” University of Medicine & Pharmacy, 400349 Cluj-Napoca, Romania;
- Correspondence: ; Tel.: +40-264-597256 (ext. 2838)
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Elucidating doxycycline loading and release performance of imprinted hydrogels with different cross-linker concentrations: a computational and experimental study. JOURNAL OF POLYMER RESEARCH 2021. [PMCID: PMC8494458 DOI: 10.1007/s10965-021-02740-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Effective non-covalent molecular imprinting on a polymer depends on the extent of non-bonded interactions between the template and other molecules before polymerization. Here, we first determine functional monomers that can yield a doxycycline-imprinted hydrogel based on the hydrogen bond interactions at the prepolymerization step, revealed by molecular dynamics (MD) simulations, molecular docking, and simulated annealing methods. Then, acrylic acid (AA)-based doxycycline (DOX) imprinted (MIP) and non-imprinted (NIP) hydrogels are synthesized in cross-linker ethylene glycol dimethacrylate (EGDMA) ratios of 1.0, 1.5, 2.0, and 3.0 mol%. Here, molecularly imprinted polymer with 3.0 mol% EGDMA has the highest imprinting factor (1.58) and best controlled drug release performance. At this point, full-atom MD simulations of DOX–AA solutions at different EGDMA concentrations reveal that AA and EGDMA compete to interact with DOX. However, at 3.0 mol% EGDMA, AA attains numerous stable hydrogen bond interactions with the drug. This study demonstrates that the concentration of the cross-linker and functional monomer can be adjusted to increase the success of imprinting, where the interplay between these two parameters can be successfully revealed by MD simulations.
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Raesian P, Rad MS, Khodaverdi E, Motamedshariaty VS, Mohajeri SA. Preparation and characterization of fluorometholone molecular imprinted soft contact lenses as ocular controlled drug delivery systems. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102591] [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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Topete A, Barahona I, Santos LF, Pinto CA, Saraiva JA, Paula Serro A, Saramago B. The effects of addition of functional monomers and molecular imprinting on dual drug release from intraocular lens material. Int J Pharm 2021; 600:120513. [PMID: 33766642 DOI: 10.1016/j.ijpharm.2021.120513] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 03/13/2021] [Accepted: 03/17/2021] [Indexed: 12/14/2022]
Abstract
Although cataract surgery is considered a safe procedure, post-surgery complications such as endophthalmitis and ocular inflammation, may occur. To prevent this, antibiotics and anti-inflammatories are prescribed in the form of eye drops during the post-operatory period, but they lead to a low drug bioavailability in target tissues. The objective of this work is to develop an intraocular lens (IOL) material to deliver simultaneously one antibiotic, moxifloxacin (MXF), and one anti-inflammatory, diclofenac (DFN), in therapeutic concentrations to prevent both complications. The IOL material was modified through the incorporation of functional monomers, as well as molecular imprinting with both drugs using the same functional monomers, namely acrylic acid (AA), methacrylic acid (MAA), 4-vinylpiridine (4-VP) and a combination of MAA + 4-VP. The best results were obtained with MAA. Molecular imprinting did not influence the drug release, except with AA. Application of a mathematical model predicted that the released MXF and DFN concentrations would stay above the pre-determined MIC of S. aureus and S. epidermidis and the minimum values of IC50 of COX-1 and COX-2, for 9 and 14 days, respectively. Antibacterial tests showed that the released antibiotic remained active. The physical properties of the drug-loaded MAA-hydrogel remained adequate. The developed system proved to be non-irritant and non-cytotoxic.
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Affiliation(s)
- Ana Topete
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Isabel Barahona
- Centro de Investigação Interdisciplinar Egas Moniz, Instituto Universitário Egas Moniz, Quinta da Granja, Monte de Caparica, 2829-511 Caparica, Portugal
| | - Luís F Santos
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Carlos A Pinto
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Jorge A Saraiva
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Ana Paula Serro
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Centro de Investigação Interdisciplinar Egas Moniz, Instituto Universitário Egas Moniz, Quinta da Granja, Monte de Caparica, 2829-511 Caparica, Portugal.
| | - Benilde Saramago
- Centro de Química Estrutural, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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9
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Therapeutic Hydrogel Lenses and the Antibacterial and Antibiotic Drugs Release. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11041931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The aim of this research was to evaluate the effects of different lens types on the availability and efficacy of anti-inflammatory and antibiotic drugs. Three lens types were examined: (1) nonionic hydrogel lenses; (2) ionic hydrogel lenses; and (3) silicone hydrogel lenses. The lenses were incubated with (a) dexamethasone; (b) betamethasone; (c) bromophenacyl bromide; and (d) chloramphenicol. Drug availability was quantified by gradient HPLC, and chloramphenicol antibacterial activity was quantified by testing the inhibition of Salmonella typhimurium growth on agar. The lens allowing the most abundant passage of betamethasone was the ionic hydrogel lens, followed by the silicone hydrogel lens and nonionic hydrogel lens. The lens allowing the most abundant passage of dexamethasone was the ionic hydrogel lens, but only at 0.5 h and 1 h. Regarding chloramphenicol, the ionic hydrogel lens and silicone hydrogel lens allowed more abundant passage than the nonionic hydrogel lens. These results highlight the relevance of adapting lenses to anti-inflammatory therapy, thus allowing a personalized medical approach.
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He S, Zhang L, Bai S, Yang H, Cui Z, Zhang X, Li Y. Advances of molecularly imprinted polymers (MIP) and the application in drug delivery. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110179] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Silva D, de Sousa HC, Gil MH, Santos LF, Oom MS, Alvarez-Lorenzo C, Saramago B, Serro AP. Moxifloxacin-imprinted silicone-based hydrogels as contact lens materials for extended drug release. Eur J Pharm Sci 2021; 156:105591. [PMID: 33065225 DOI: 10.1016/j.ejps.2020.105591] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 09/21/2020] [Accepted: 10/05/2020] [Indexed: 11/26/2022]
Abstract
Contact lenses may act as drug release platforms for the treatment of ocular infections, but there is still the need for extending their typical release periods and enhancing ocular bioavailability. The present study aimed to develop a molecularly imprinted silicone-based hydrogel to be used in the manufacturing of contact lenses that can be loaded efficiently and be able to release the antibiotic moxifloxacin hydrochloride (MXF) in a sustained way. A set of hydrogels was prepared by the molecular imprinting method using acrylic acid (AA) as the functional monomer for the specific recognition of MXF. The modified hydrogels loaded a higher amount of MXF, which was released for a longer time. In vitro experiments, using a microfluidic cell to mimic the ocular surface fluid turnover, showed that the imprinted hydrogel TRIS(300)-I prepared with the highest content in AA led to MXF concentrations in the release medium which were effective against S. aureus and S. epidermidis for about 2 weeks. Furthermore, some important properties such as water uptake, wettability, transmittance, ionic permeability, and Young´s modulus of the modified hydrogel remained within the range of values recommended for contact lenses. No cytotoxicity and no potential ocular irritancy effect were detected. Such hydrogel seems to be a promising alternative to the current options for the treatment of ocular infections.
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Affiliation(s)
- Diana Silva
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Hermínio C de Sousa
- Univ Coimbra, CIEPQPF, FCTUC, Department of Chemical Engineering, Rua Sílvio Lima, Pólo II - Pinhal de Marrocos, 3030-790 Coimbra
| | - Maria Helena Gil
- Univ Coimbra, CIEPQPF, FCTUC, Department of Chemical Engineering, Rua Sílvio Lima, Pólo II - Pinhal de Marrocos, 3030-790 Coimbra
| | - Luís F Santos
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Madalena Salema Oom
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz,2829-511 Caparica, Portugal
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma Group (GI-1645), Facultad de Farmacia and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Benilde Saramago
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ana Paula Serro
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.; Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz,2829-511 Caparica, Portugal.
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Fan X, Torres-Luna C, Azadi M, Domszy R, Hu N, Yang A, David AE. Evaluation of commercial soft contact lenses for ocular drug delivery: A review. Acta Biomater 2020; 115:60-74. [PMID: 32853799 DOI: 10.1016/j.actbio.2020.08.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 08/13/2020] [Accepted: 08/18/2020] [Indexed: 02/07/2023]
Abstract
Soft contact lenses have generated growing interest in ocular drug delivery due to their potential to enhance drug bioavailability in ocular tissues. Commercially available soft contact lenses offer several advantages for ocular drug delivery as they are manufactured on a large scale, which guarantees the availability of a consistent and reproducible product, and their favorable safety profile is well-established through broad clinical use. Here we review the rationale for using commercially available soft contact lenses for ocular drug delivery; summarize the evolution of the materials used in contact lens fabrication; and explore various methods used to improve the drug release characteristics and its tissue penetration. While significant progress has been made, several issues still require further attention for the commercial launch of a viable drug-eluting contact lens product, including control of initial burst release, shelf-life stability, and drug loss during processing or storage.
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Zamboulis A, Nanaki S, Michailidou G, Koumentakou I, Lazaridou M, Ainali NM, Xanthopoulou E, Bikiaris DN. Chitosan and its Derivatives for Ocular Delivery Formulations: Recent Advances and Developments. Polymers (Basel) 2020; 12:E1519. [PMID: 32650536 PMCID: PMC7407599 DOI: 10.3390/polym12071519] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/03/2020] [Accepted: 07/03/2020] [Indexed: 02/06/2023] Open
Abstract
Chitosan (CS) is a hemi-synthetic cationic linear polysaccharide produced by the deacetylation of chitin. CS is non-toxic, highly biocompatible, and biodegradable, and it has a low immunogenicity. Additionally, CS has inherent antibacterial properties and a mucoadhesive character and can disrupt epithelial tight junctions, thus acting as a permeability enhancer. As such, CS and its derivatives are well-suited for the challenging field of ocular drug delivery. In the present review article, we will discuss the properties of CS that contribute to its successful application in ocular delivery before reviewing the latest advances in the use of CS for the development of novel ophthalmic delivery systems. Colloidal nanocarriers (nanoparticles, micelles, liposomes) will be presented, followed by CS gels and lenses and ocular inserts. Finally, instances of CS coatings, aiming at conferring mucoadhesiveness to other matrixes, will be presented.
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Affiliation(s)
- Alexandra Zamboulis
- Laboratory of Polymer Chemistry & Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.N.); (G.M.); (I.K.); (M.L.); (N.M.A.); (E.X.)
| | | | | | | | | | | | | | - Dimitrios N. Bikiaris
- Laboratory of Polymer Chemistry & Technology, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.N.); (G.M.); (I.K.); (M.L.); (N.M.A.); (E.X.)
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Ran W, Ma H, Li M. In Vitro and In Vivo Studies of Polyvinyl Pyrrolidone–Coated Sparfloxacin-Loaded Ring Contact Lens to Treat Conjunctivitis. J Pharm Sci 2020; 109:1951-1957. [DOI: 10.1016/j.xphs.2020.02.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/03/2020] [Accepted: 02/11/2020] [Indexed: 01/25/2023]
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Xu B, Liu T. Travoprost loaded microemulsion soaked contact lenses: Improved drug uptake, release kinetics and physical properties. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101792] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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16
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Multiple drug delivery from the drug-implants-laden silicone contact lens: Addressing the issue of burst drug release. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 112:110885. [PMID: 32409042 DOI: 10.1016/j.msec.2020.110885] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 03/20/2020] [Indexed: 01/17/2023]
Abstract
A fixed combination of bimatoprost/timolol eye drop solution is used to manage the elevated intra-ocular pressure in glaucoma patients, including individuals whose condition is poorly controlled by monotherapy. Eye drop solutions are generally given in high dose, due to poor ocular bioavailability. The high ocular dose of bimatoprost and timolol lead to hyperaemia and systemic cardiac side effects respectively. Here, we introduce multiple implant-laden contact lenses (IM) to passively deliver timolol, bimatoprost and hyaluronic acid at therapeutically relevant doses without high burst release. The drug-loaded implants were individually implanted in the outer periphery of the silicone contact lenses. Atomic force microscopy showed the smooth surface of the implant contact lens, as the implants were inside the contact lens matrix. The implant lens (IM) showed major loss of drugs [timolol = 60.60%, bimatoprost = 61.75% and HA = 46.03%] during the monomer extraction and wet sterilization, while the option of dry radiation sterilization (IM-R lens) and hydration for 24 h prior to use showed relatively lower loss of drugs [timolol = 16.87%, bimatoprost = 47.95% and HA = 24.41%]. The in-vitro drugs release data of IM-R lens, showed sustained release for 72 h, with low burst release in comparison to the soaked (SM) and direct drug-laden contact lenses (DL). The in vivo drug release data in the rabbit tear fluid showed sustained release using IM-R lens in comparison to the SM lens and eye drop therapy. The burst release with the IM-R lens was many folds reduced, which could bypass the side effects associated with multiple eye drop therapy. The in vivo pharmacodynamic study in the rabbit model showed peak and valley profile with multiple eye drop therapy, while IM-R lens showed prolong reduction in intra ocular pressure (IOP) for 120 h. The study demonstrates the application of implantation technology to deliver multiple drug through contact lenses to treat glaucoma.
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Xue Y, Zhang W, Lei Y, Dang M. Novel Polyvinyl Pyrrolidone-Loaded Olopatadine HCl-Laden Doughnut Contact Lens to Treat Allergic Conjunctivitis. J Pharm Sci 2020; 109:1714-1724. [PMID: 32007507 DOI: 10.1016/j.xphs.2020.01.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 01/14/2020] [Accepted: 01/23/2020] [Indexed: 01/20/2023]
Abstract
Olopatadine HCl is an antiallergic drug used for the management of allergic conjunctivitis. Currently, it is delivered via eye drop solution, which is highly inefficient due to low bioavailability. Silicone contact lenses can be used to sustain the release of ophthalmic drugs. However, the presence of drug alters the optical transmittance and physical properties of the contact lens. The objective was to design a novel polyvinyl pyrrolidone (PVP)-coated olopatadine-ethyl cellulose microparticles-laden doughnut contact lens to sustained ocular delivery with limited alteration to the optical and swelling properties of the contact lens. The doughnut was implanted within the periphery of the lens using modified casting technique. Olopatadine HCl was loaded by soaking (SM-OL), direct loading (DL-OL), and doughnut casting method (DNT-OL). PVP (comfort agent) was loaded on the surface of contact lens for all the batches via novel curing technique. The in vitro olopatadine HCl release data of SM-OL (up to 48-72 h) and DL-OL batches (up to 72 h) showed high burst release, whereas DNT-OL batch showed sustained release up to 120 h without significant (p > 0.05) alteration in the optical and swelling properties of contact lens. All the batches showed sustained release of PVP up to 120 h. The in vivo studies in the rabbit tear fluid showed improvement in the olopatadine HCl and PVP retention time in comparison to eye drop solution. The PVP-loaded DNT-OL-500 lens showed tear stabilization (comfort wear) in Schirmer strip test (rabbits) with no protein adherence in comparison to DNT-OL-500 lens without PVP. The study demonstrated the successful delivery of olopatadine HCl and PVP-K30 from the doughnut contact lens for the extended period with limited alteration to the optical and swelling properties of contact lens.
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Affiliation(s)
- Yushun Xue
- Department of Ophthalmology, Shaanxi Provincial People's Hospital, Shaanxi 710068, China.
| | - Wenzhi Zhang
- Innoscience Research Sdn Bhd, Jalan USJ 25/1, Subang Jaya, Selangor 47650, Malaysia
| | - Yan Lei
- Innoscience Research Sdn Bhd, Jalan USJ 25/1, Subang Jaya, Selangor 47650, Malaysia
| | - Minyan Dang
- Innoscience Research Sdn Bhd, Jalan USJ 25/1, Subang Jaya, Selangor 47650, Malaysia
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18
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Zhang X, Cao X, Qi P. Therapeutic contact lenses for ophthalmic drug delivery: major challenges. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 31:549-560. [PMID: 31902299 DOI: 10.1080/09205063.2020.1712175] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Xiuju Zhang
- Department of General Practice, Linyi People’s Hospital, Linyi, Shandong, China
| | - Xiuzhen Cao
- Department of Anus and Intestine Surgery, Taian Central Hospital, Taian, Shandong, China
| | - Ping Qi
- Department of General Practice, Linyi People’s Hospital, Linyi, Shandong, China
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19
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Bodoki AE, Iacob BC, Bodoki E. Perspectives of Molecularly Imprinted Polymer-Based Drug Delivery Systems in Cancer Therapy. Polymers (Basel) 2019; 11:polym11122085. [PMID: 31847103 PMCID: PMC6960886 DOI: 10.3390/polym11122085] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/03/2019] [Accepted: 12/11/2019] [Indexed: 01/09/2023] Open
Abstract
Despite the considerable effort made in the past decades, multiple aspects of cancer management remain a challenge for the scientific community. The severe toxicity and poor bioavailability of conventional chemotherapeutics, and the multidrug resistance have turned the attention of researchers towards the quest of drug carriers engineered to offer an efficient, localized, temporized, and doze-controlled delivery of antitumor agents of proven clinical value. Molecular imprinting of chemotherapeutics is very appealing in the design of drug delivery systems since the specific and selective binding sites created within the polymeric matrix turn these complex structures into value-added carriers with tunable features, notably high loading capacity, and a good control of payload release. Our work aims to summarize the present state-of-the art of molecularly imprinted polymer-based drug delivery systems developed for anticancer therapy, with emphasis on the particularities of the chemotherapeutics’ release and with a critical assessment of the current challenges and future perspectives of these unique drug carriers.
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Affiliation(s)
- Andreea Elena Bodoki
- Inorganic Chemistry Dept., Faculty of Pharmacy, “Iuliu Haţieganu” University of Medicine and Pharmacy, 8 Ion Creangă St., 400010 Cluj-Napoca, Romania;
| | - Bogdan-Cezar Iacob
- Analytical Chemistry Dept., Faculty of Pharmacy, “Iuliu Haţieganu” University of Medicine and Pharmacy, 4 Pasteur St., 400349 Cluj-Napoca, Romania;
| | - Ede Bodoki
- Analytical Chemistry Dept., Faculty of Pharmacy, “Iuliu Haţieganu” University of Medicine and Pharmacy, 4 Pasteur St., 400349 Cluj-Napoca, Romania;
- Correspondence: ; Tel.: +40-264-597-256 (int. 2838)
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20
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Son YJ, Tse JW, Zhou Y, Mao W, Yim EKF, Yoo HS. Biomaterials and controlled release strategy for epithelial wound healing. Biomater Sci 2019; 7:4444-4471. [PMID: 31436261 DOI: 10.1039/c9bm00456d] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The skin and cornea are tissues that provide protective functions. Trauma and other environmental threats often cause injuries, infections and damage to these tissues, where the degree of injury is directly correlated to the recovery time. For example, a superficial skin or corneal wound may recover within days; however, more severe injuries can last up to several months and may leave scarring. Thus, therapeutic strategies have been introduced to enhance the wound healing efficiency and quality. Although the skin and cornea share similar anatomic structures and wound healing process, therapeutic agents and formulations for skin and cornea wound healing differ in accordance with the tissue and wound type. In this review, we describe the anatomy and epithelial wound healing processes of the skin and cornea, and summarize the therapeutic molecules that are beneficial to the respective regeneration process. In addition, biomaterial scaffolds that inherently possess bioactive properties or modified with therapeutic molecules for topical controlled release and enhanced wound healing efficiency are also discussed.
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Affiliation(s)
- Young Ju Son
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - John W Tse
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada N2L 3G1.
| | - Yiran Zhou
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada N2L 3G1.
| | - Wei Mao
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Evelyn K F Yim
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON, Canada N2L 3G1.
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea. and Institute of Bioscience and Biotechnology, Kangwon National University, Republic of Korea
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21
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Moreddu R, Vigolo D, Yetisen AK. Contact Lens Technology: From Fundamentals to Applications. Adv Healthc Mater 2019; 8:e1900368. [PMID: 31183972 DOI: 10.1002/adhm.201900368] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/20/2019] [Indexed: 12/29/2022]
Abstract
Contact lenses are ocular prosthetic devices used by over 150 million people worldwide. Primary applications of contact lenses include vision correction, therapeutics, and cosmetics. Contact lens materials have significantly evolved over time to minimize adverse effects associated with contact lens wearing, to maintain a regular corneal metabolism, and to preserve tear film stability. This article encompasses contact lens technology, including materials, chemical and physical properties, manufacturing processes, microbial contamination, and ocular complications. The function and the composition of the tear fluid are discussed to assess its potential as a diagnostic media. The regulatory standards of contact lens devices with regard to biocompatibility and contact lens market are presented. Future prospects in contact lens technology are evaluated, with particular interest given to theranostic applications for in situ continuous monitoring the ocular physiology.
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Affiliation(s)
- Rosalia Moreddu
- Department of Chemical EngineeringImperial College London SW7 2AZ London UK
- School of Chemical EngineeringUniversity of Birmingham B15 2TT Birmingham UK
| | - Daniele Vigolo
- School of Chemical EngineeringUniversity of Birmingham B15 2TT Birmingham UK
| | - Ali K. Yetisen
- Department of Chemical EngineeringImperial College London SW7 2AZ London UK
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22
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Phan CM, Walther H, Smith RW, Riederer D, Lau C, Osborn Lorenz K, Subbaraman LN, Jones L. Determination of the release of PEG and HPMC from nelfilcon A daily disposable contact lenses using a novel in vitro eye model. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:2124-2136. [PMID: 30157706 DOI: 10.1080/09205063.2018.1514192] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The traditional method to measure release of components from CLs is a vial containing a static volume of PBS (phosphate buffered saline). However, this model does not simulate physiologically relevant tear volume and natural tear flow, air exposure, and mechanical rubbing. These factors can significantly impact release kinetics. We have developed an in vitro eye model (OcuFlow) that simulates these parameters. The aim of the study was to measure the release of PEG (polyethylene glycol), and HPMC (hydroxypropyl methylcellulose) from a daily disposable hydrogel contact lens material (nelfilcon A; Dailies AquaComfort PLUS; DACP;) over 24 hrs using the OcuFlow platform. The elution of PEG and HPMC from DACP lenses was analyzed using LCMS (liquid chromatography mass spectrometry). The release of all wetting agents from the lenses followed a burst release pattern, which occurred within the first 1.5 hrs (P < 0.05). The release of PEG was greater than that of HPMC (P < 0.05). The amount of PEG and HPMC released at any given time was less than 1% of the amount in the blister pack solution. Our results suggest that HPMC and PEG are rapidly released from the CL.
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Affiliation(s)
- Chau-Minh Phan
- a Centre for Ocular Research & Education (CORE) - formerly Centre for Contact Lens Research (CCLR) , School of Optometry and Vision Science , Waterloo , ON , Canada
| | - Hendrik Walther
- a Centre for Ocular Research & Education (CORE) - formerly Centre for Contact Lens Research (CCLR) , School of Optometry and Vision Science , Waterloo , ON , Canada
| | - Richard W Smith
- b University of Waterloo Mass Spectrometry Facility, Department of Chemistry , University of Waterloo , Waterloo , ON , Canada
| | | | - Charis Lau
- c Johnson & Johnson Vision , Jacksonville , FL , USA
| | | | - Lakshman N Subbaraman
- a Centre for Ocular Research & Education (CORE) - formerly Centre for Contact Lens Research (CCLR) , School of Optometry and Vision Science , Waterloo , ON , Canada
| | - Lyndon Jones
- a Centre for Ocular Research & Education (CORE) - formerly Centre for Contact Lens Research (CCLR) , School of Optometry and Vision Science , Waterloo , ON , Canada
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23
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Deng J, Chen S, Chen J, Ding H, Deng D, Xie Z. Self-Reporting Colorimetric Analysis of Drug Release by Molecular Imprinted Structural Color Contact Lens. ACS APPLIED MATERIALS & INTERFACES 2018; 10:34611-34617. [PMID: 30211539 DOI: 10.1021/acsami.8b11655] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
As a prospective ophthalmic drug delivery device, contact lenses attract a lot of attention because of the improved drug residence time and bioavailability. Herein, we proposed and fabricated a molecular imprinted structural color contact lens for sustained timolol release which could self-report the release process by color change. The specific recognition of target timolol by molecular imprinted sites can not only increase the loading amount and the residence time of the drug but also endow the structure color of lens remarkable blue shift with the accumulative release of timolol. The fascinating contact lens can be further used for controlling release of a large number of ophthalmic drugs and has high potential to be a new generation of functional contact lenses.
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Affiliation(s)
- Jingzhe Deng
- Department of Biomedical Engineering , China Pharmaceutical University , Nanjing 211198 , China
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
| | - Shan Chen
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
| | - Jialun Chen
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
| | - Hailong Ding
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
| | - Dawei Deng
- Department of Biomedical Engineering , China Pharmaceutical University , Nanjing 211198 , China
| | - Zhuoying Xie
- State Key Laboratory of Bioelectronics , Southeast University , Nanjing 210096 , China
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Mohsenzadeh MS, Mohammadinejad A, Mohajeri SA. Simple and selective analysis of different antibiotics in milk using molecularly imprinted polymers: a review. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2018; 35:1959-1974. [DOI: 10.1080/19440049.2018.1508889] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Mahdieh Sadat Mohsenzadeh
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arash Mohammadinejad
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Chemistry, Payame Noor University, Tehran, I.R. of Iran
| | - Seyed Ahmad Mohajeri
- Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
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25
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Tuwahatu CA, Yeung CC, Lam YW, Roy VAL. The molecularly imprinted polymer essentials: curation of anticancer, ophthalmic, and projected gene therapy drug delivery systems. J Control Release 2018; 287:24-34. [PMID: 30110614 DOI: 10.1016/j.jconrel.2018.08.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Revised: 08/10/2018] [Accepted: 08/11/2018] [Indexed: 02/06/2023]
Abstract
The development of polymeric materials as drug delivery systems has advanced from systems that rely on classical passive targeting to carriers that can sustain the precisely controlled release of payloads upon physicochemical triggers in desired microenvironment. Molecularly imprinted polymers (MIP), materials designed to capture specific molecules based on their molecular shape and charge distribution, are attractive candidates for fulfilling these purposes. In particular, drug-imprinted polymers coupled with active targeting mechanisms have been explored as potential drug delivery systems. In this review, we have curated important recent efforts in the development of drug-imprinted polymers in a variety of clinical applications, especially oncology and ophthalmology. MIP possesses properties that may complement the traditional delivery systems of these two disciplines, such as passive enhanced permeability and retention effect (EPR) in cancer tumors, and passive drug diffusion in delivering ophthalmic therapeutics. Furthermore, the prospects of MIP integration with the emerging gene therapies will be discussed.
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Affiliation(s)
- Christian Antonio Tuwahatu
- Department of Materials Science and Engineering and State Key Laboratory of Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Chi Chung Yeung
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Yun Wah Lam
- Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Vellaisamy Arul Lenus Roy
- Department of Materials Science and Engineering and State Key Laboratory of Millimeter Waves, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
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26
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Approaches in topical ocular drug delivery and developments in the use of contact lenses as drug-delivery devices. Ther Deliv 2017. [DOI: 10.4155/tde-2017-0018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Drug-delivery approaches have diversified over the last two decades with the emergence of nanotechnologies, smart polymeric systems and multimodal functionalities. The intended target for specific treatment of disease is the key defining developing parameter. One such area which has undergone significant advancements relates to ocular delivery. This has been expedited by the development of material advancement, mechanistic concepts and through the deployment of advanced process technologies. This review will focus on the developments within lens-based drug delivery while touching on conventional and current methods of topical ocular drug delivery. A summary table will provide quick reference to note the key findings in this area. In addition, the review also elucidates current theranostic and diagnostic approaches based on ocular lenses.
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27
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Cui Y, Cui P, Chen B, Li S, Guan H. Monoclonal antibodies: formulations of marketed products and recent advances in novel delivery system. Drug Dev Ind Pharm 2017; 43:519-530. [DOI: 10.1080/03639045.2017.1278768] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Yanan Cui
- School of Pharmacy, Jining Medicinal College, Jining, China
| | - Ping Cui
- Department of Epidemiology and Biostatistics, Key Laboratory of Cancer Prevention and Therapy, Tianjin, National Clinical Research Centre of Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China
| | - Binlong Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Suxin Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, China
- Beijing Key Laboratory of Molecular Pharmaceutics and New Drug Delivery Systems, School of Pharmaceutical Sciences, Peking University, Beijing, China
| | - Hua Guan
- School of Pharmacy, Jining Medicinal College, Jining, China
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28
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Kioomars S, Heidari S, Malaekeh-Nikouei B, Shayani Rad M, Khameneh B, Mohajeri SA. Ciprofloxacin-imprinted hydrogels for drug sustained release in aqueous media. Pharm Dev Technol 2016; 22:122-129. [DOI: 10.1080/10837450.2016.1230131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Sajedeh Kioomars
- Students Research Committee, Department of Food and Drug Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Somayeh Heidari
- Students Research Committee, Department of Food and Drug Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bizhan Malaekeh-Nikouei
- Nanotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Shayani Rad
- Students Research Committee, Department of Food and Drug Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Targeted Drug Delivery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bahman Khameneh
- Department of Pharmaceutical Control, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ahmad Mohajeri
- Targeted Drug Delivery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Yang M, Yang YF, Lei M, Ye CT, Zhao CS, Xu JG, Wu KL, Yu MB. Preparation and evaluation of HPMC-based pirfenidone solution in vivo. Drug Dev Ind Pharm 2016; 43:171-176. [PMID: 27593737 DOI: 10.1080/03639045.2016.1230624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
CONTEXT Pirfenidone (PFD) has exhibited therapeutic potential in the treatment of cell proliferative disorders. The previously developed 0.5% water-based PFD eye drops by our team exhibited antiscarring effectiveness and ocular safety but with a limit of short half-life and poor bioavailability. OBJECTIVE To increase bioavailability of the water-based PFD eye drops, we prepared a viscous solution by adding hydroxypropyl methylcellulose (HPMC, F4M), which acted as a viscosity-enhancer. Subsequently, we compared the HPMC-based PFD solution with the water-based PFD eye drops. MATERIALS AND METHODS PFD solution with 1% HPMC (w/v) was prepared, and the viscosities at different shear rates were measured to investigate its rheology. PFD concentrations in the tear, aqueous humor, conjunctiva, cornea, and sclerae of New Zealand rabbits were detected at different time points with high-performance liquid chromatography (HPLC) following single instillation of the 0.5% PFD (w/v) water-based eye drops or HPMC-based solution. RESULTS Compared with the 0.5% water-based PFD eye drops, the HPMC-based solution increased the PFD levels in tears and prolonged the residence time from 10 to more than 20 min (p < .01). Consequently, the concentrations of PFD in aqueous humor, conjunctiva, cornea, and sclera were elevated to varying degrees until 90 min after topical administration. CONCLUSIONS The developed formulation possesses a same readily administration and simple preparation as the PFD eye drops; however, the HPMC-based solution exhibited the higher bioavailability.
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Affiliation(s)
- Mei Yang
- a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-sen University , Guangzhou , China
| | - Yang-Fan Yang
- a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-sen University , Guangzhou , China
| | - Ming Lei
- b School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou , China
| | - Cheng-Tian Ye
- a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-sen University , Guangzhou , China
| | - Chun-Shun Zhao
- b School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou , China
| | - Jian-Gang Xu
- a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-sen University , Guangzhou , China
| | - Kai-Li Wu
- a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-sen University , Guangzhou , China
| | - Min-Bin Yu
- a State Key Laboratory of Ophthalmology , Zhongshan Ophthalmic Center, Sun Yat-sen University , Guangzhou , China
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Rad MS, Mohajeri SA. Simultaneously Load and Extended Release of Betamethasone and Ciprofloxacin from Vitamin E-Loaded Silicone-Based Soft Contact Lenses. Curr Eye Res 2016; 41:1185-91. [DOI: 10.3109/02713683.2015.1107591] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Maryam Shayani Rad
- Student Research Committee (SRC), Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Ahmad Mohajeri
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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Abstract
Molecular imprinted polymers (MIP) are promising and versatile materials that have been used for the determination of many different analytes.
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Qin F, Zeng L, Zhu Y, Cao J, Wang X, Liu W. Preparation and evaluation of a timolol maleate drug–resin ophthalmic suspension as a sustained-release formulation in vitro and in vivo. Drug Dev Ind Pharm 2015; 42:535-45. [PMID: 26368660 DOI: 10.3109/03639045.2015.1085872] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Fuhong Qin
- Department of Pharmacy, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Li Zeng
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Yongtao Zhu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
| | - Jingjing Cao
- Department of Pharmacy, Henan Provincial People’s Hospital, Zhengzhou, Henan, China, and
| | - Xiaohui Wang
- Department of Pharmacy, Luohe Central Hospital, Luohe, Henan, China
| | - Wei Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, Henan, China
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