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Zhu Q, Guan J, Tian B, Wang P. Rational design of antibiotic-free antimicrobial contact lenses: Trade-offs between antimicrobial performance and biocompatibility. BIOMATERIALS ADVANCES 2024; 164:213990. [PMID: 39154560 DOI: 10.1016/j.bioadv.2024.213990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/20/2024] [Accepted: 08/05/2024] [Indexed: 08/20/2024]
Abstract
Microbial keratitis associated with contact lenses (CLs) wear remains a significant clinical concern. Antibiotic therapy is the current standard of care. However, the emergence of multidrug-resistant pathogens necessitates the investigation of alternative strategies. Antibiotic-free antimicrobial contact lenses (AFAMCLs) represent a promising approach in this regard. The effectiveness of CLs constructed with a variety of antibiotic-free antimicrobial strategies against microorganisms has been demonstrated. However, the impact of these antimicrobial strategies on CLs biocompatibility remains unclear. In the design and development of AFAMCLs, striking a balance between robust antimicrobial performance and optimal biocompatibility, including safety and wearing comfort, is a key issue. This review provides a comprehensive overview of recent advancements in AFAMCLs technology. The focus is on the antimicrobial efficacy and safety of various strategies employed in AFAMCLs construction. Furthermore, this review investigates the potential impact of these strategies on CLs parameters related to wearer comfort. This review aims to contribute to the continuous improvement of AFAMCLs and provide a reference for the trade-off between resistance to microorganisms and wearing comfort. In addition, it is hoped that this review can also provide a reference for the antimicrobial design of other medical devices.
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Affiliation(s)
- Qiang Zhu
- School of Pharmacy, Jiangsu Key Laboratory of Inflammation and Molecular Drug Targets, Nantong University, Nantong 226001, China.
| | - Jian Guan
- School of Pharmacy, Shenyang Key Laboratory of Intelligent Mucosal Drug Delivery Systems, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Bin Tian
- Department of Pharmaceutical Sciences, School of Biomedical and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Puxiu Wang
- Department of Pharmacy, The First Hospital of China Medical University, Shenyang 110001, China.
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2
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Itokawa T, Yamasaki K, Suzuki T, Koh S. Advances in Contact Lens Care Solutions: PVP-I Disinfectant and HAD Wetting Agents From Japan. Eye Contact Lens 2024; 50:91-101. [PMID: 38019569 DOI: 10.1097/icl.0000000000001060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/28/2023] [Indexed: 11/30/2023]
Abstract
ABSTRACT Half of the individuals who wear contact lenses use reusable lenses that require proper care. Improper contact lens (CL) care and using inadequate disinfecting solutions can lead to lens contamination, CL-related microbial keratitis, and Acanthamoeba keratitis. Oxidative disinfecting solutions, such as hydrogen peroxide, show higher efficacy than multipurpose solutions. Povidone-iodine (PVP-I), an oxidative disinfectant used in ophthalmic surgery, has been proven to be safe and effective. The PVP-I system, a CL disinfecting solution developed in Japan, has demonstrated excellent antimicrobial and antiviral properties. Although CL discomfort does not have a risk of ocular disorders with poor visual prognosis, such as keratitis, CL discomfort can still lead to lens dropout and thus needs to be addressed. To mitigate CL discomfort, it is essential to use disinfecting solutions containing surfactants and wetting agents that improve wettability of the lens surface. A CL solution containing hyaluronic acid derivatives (HADs) as wetting agents that permanently adhere to the lens surface to improve wettability of the lens surface was developed in Japan. There is potential for HAD to be integrated into various solutions. This article reviews the efficacy of novel PVP-I-based disinfecting solution and HAD wetting agents.
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Affiliation(s)
- Takashi Itokawa
- Department of Ophthalmology (T.I., T.S.), Toho University, Tokyo, Japan; OPHTECS Corporation (K.Y.), Kobe Research Center, Kobe, Japan; Ishizuchi Eye Clinic (T.S.), Ehime, Japan; Department of Innovative Visual Science (S.K.), Osaka University Graduate School of Medicine, Osaka, Japan; and Department of Ophthalmology (S.K.), Osaka University Graduate School of Medicine, Osaka, Japan
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3
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Synthesis and characterization of radiation cross-linked PVP hydrogels and investigation of its potential as an antileishmanial drug carrier. Polym Bull (Berl) 2019. [DOI: 10.1007/s00289-019-02803-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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4
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Smułek W, Kaczorek E, Hricovíniová Z. Alkyl Xylosides: Physico-Chemical Properties and Influence on Environmental Bacteria Cells. J SURFACTANTS DETERG 2017; 20:1269-1279. [PMID: 29200811 PMCID: PMC5686273 DOI: 10.1007/s11743-017-2012-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 08/18/2017] [Indexed: 12/03/2022]
Abstract
A group of four selected non-ionic surfactants based on carbohydrates, namely octyl d-xyloside (C8X), nonyl d-xyloside (C9X), decyl d-xyloside (C10X) and dodecyl d-xyloside (C12X), have been investigated to accomplish a better understanding of their physico-chemical properties as well as biological activities. The surface-active properties, such as critical micelle concentration (CMC), emulsion and foam stability, the impact of the compounds on cell surface hydrophobicity and cell membrane permeability together with their toxicity on the selected bacterial strains have been determined as well. The studied group of surfactants showed high surface-active properties allowing a decrease in the surface tension to values below 25 mN m-1 for dodecyl d-xyloside at the CMC. The investigated compounds did not have any toxic influence on two Pseudomonas bacterial strains at concentrations below 25 mg L-1. The studied long-chain alkyl xylosides influenced both the cell inner membrane permeability and the cell surface hydrophobicity. Furthermore, the alkyl chain length, as well as the surfactant concentration, had a significant impact on the modifications of the cell surface properties. The tested non-ionic surfactants exhibited strong surface-active properties accompanied by the significant influence on growth and properties of Pseudomonas bacteria cells.
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Affiliation(s)
- Wojciech Smułek
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Ewa Kaczorek
- Institute of Chemical Technology and Engineering, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
| | - Zuzana Hricovíniová
- Institute of Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 38 Bratislava, Slovakia
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5
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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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Dursch TJ, Liu DE, Oh Y, Radke CJ. Fluorescent solute-partitioning characterization of layered soft contact lenses. Acta Biomater 2015; 15:48-54. [PMID: 25484335 DOI: 10.1016/j.actbio.2014.11.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 11/04/2014] [Accepted: 11/25/2014] [Indexed: 11/28/2022]
Abstract
Partitioning of aqueous packaging, wetting, and care-solution agents into and out of soft contact lenses (SCLs) is important for improving wear comfort and also for characterizing lens physico-chemical properties. We illustrate both features of partitioning by application of fluorescent-solute partitioning into DAILIES TOTAL1® (delefilcon A) water-gradient SCLs, which exhibit a layered structure of a silicone-hydrogel (SiHy) core sandwiched between thin surface-gel layers. Two-photon fluorescence confocal laser-scanning microscopy and attenuated total-reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) characterize the lens and assess uptake profiles of six prototypical fluorescent solutes. Comparison of solute uptake in a SiHy-core prototype lens (i.e., O2OPTIX(TM)) validates the core SiHy structure of DAILIESTOTAL1®. To establish surface-layer charge, partition coefficients and water contents are obtained for aqueous pH values of 4 and 7.4. Solute fluorescence-intensity profiles clearly confirm a layered structure for the DAILIES TOTAL1® lenses. In all cases, aqueous solute partition coefficients are greater in the surface layers than in the SiHy core, signifying higher water in the surface gels. ATR-FTIR confirms surface-layer mass water contents of 82±3%. Water uptake and hydrophilic-solute uptake at pH 4 compared with that at pH 7.4 reveal that the surface-gel layers are anionic at physiologic pH 7.4, whereas both the SiHy core and O2OPTIX™ (lotrafilcon B) are nonionic. We successfully confirm the layered structure of DAILIES TOTAL1®, consisting of an 80-μm-thick SiHy core surrounded by 10-μm-thick polyelectrolyte surface-gel layers of significantly greater water content and aqueous solute uptake compared with the core. Accordingly, fluorescent-solute partitioning in SCLs provides information on gel structure and composition, in addition to quantifying uptake and release amounts and rates.
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Affiliation(s)
- T J Dursch
- Chemical and Biomolecular Engineering Department, University of California, 101E Gilman, Berkeley, CA 94720-1462, USA
| | - D E Liu
- Chemical and Biomolecular Engineering Department, University of California, 101E Gilman, Berkeley, CA 94720-1462, USA
| | - Y Oh
- Chemical and Biomolecular Engineering Department, University of California, 101E Gilman, Berkeley, CA 94720-1462, USA
| | - C J Radke
- Chemical and Biomolecular Engineering Department, University of California, 101E Gilman, Berkeley, CA 94720-1462, USA; Vision Science Group, University of California, Berkeley, CA 94720, USA.
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Contact lenses as drug reservoirs & delivery systems: the successes & challenges. Ther Deliv 2014; 5:1085-100. [DOI: 10.4155/tde.14.73] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Although conventional eye drops comprise over 90% of the marketed ocular dosage forms, they do have limitations, such as poor ocular drug bioavailability and systemic side effects; contact lenses are amongst the new delivery systems and devices that could overcome some of these problems. The most common approach to load drug molecules into contact lenses includes soaking in a drug solution. This approach had some success, but failed to achieve controlled/sustained drug release to the eye. On the other hand, nanoreservoir systems comprising nanoparticles, cyclodextrins, liposomes or surfactant aggregates being incorporated into the contact lenses could offer a plausible solution. This review highlights the status quo with contact lenses as ocular drug-delivery carriers and identifies possible future directions.
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Chan KY, Cho P, Boost M. Microbial adherence to cosmetic contact lenses. Cont Lens Anterior Eye 2014; 37:267-72. [PMID: 24440107 DOI: 10.1016/j.clae.2013.12.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 10/17/2013] [Accepted: 12/05/2013] [Indexed: 10/25/2022]
Abstract
AIM To investigate whether cosmetic contact lenses (CCL) with surface pigments affect microbial adherence. METHOD Fifteen brands of CCL were purchased from optical, non-optical retail outlets, and via the Internet. A standardized rub-off test was performed on each CCL (five lenses per brand) to confirm the location of the pigments. The rub-off test comprised gentle rubbing on the surfaces of each CCL with wetted cotton buds for a maximum of 20 rubs per surface. A new set of CCL (five lenses per brand) were incubated in Pseudomonas aeruginosa overnight. Viable counts of adhered bacteria were determined by the number of colony-forming units (CFU) on agar media on each lens. The adherence of P. aeruginosa as well as Staphylococcus aureus and Serratia marcescens to three brands of CCL (A-C) (five lenses per brand) were also compared to their adherences on their clear counterparts. RESULTS Only two of the 15 brands of CCL tested (brands B and C) had pigments that did not detach with the rub-off test. The remaining 13 brands of CCL all failed the rub-off test and these lenses showed higher P. aeruginosa adherence (8.7 × 10(5)-1.9 × 10(6) CFU/lens). Brands B and C lenses showed at least six times less bacterial adhesion than the other 13 brands. Compared to their clear counterparts, bacterial adherence to brands B and C lenses did not differ significantly, whereas brand A lenses showed significantly higher adherence. CONCLUSION Surface pigments on CCL resulted in significantly higher bacterial adherence.
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Affiliation(s)
- Ka Yin Chan
- School of Optometry, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region.
| | - Pauline Cho
- School of Optometry, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
| | - Maureen Boost
- Department of Health Technology and Informatics, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
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Liu DE, Kotsmar C, Nguyen F, Sells T, Taylor NO, Prausnitz JM, Radke CJ. Macromolecule Sorption and Diffusion in HEMA/MAA Hydrogels. Ind Eng Chem Res 2013. [DOI: 10.1021/ie402148u] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- D. E. Liu
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
| | - C. Kotsmar
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
| | - F. Nguyen
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
| | - T. Sells
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
| | - N. O. Taylor
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
| | - J. M. Prausnitz
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
| | - C. J. Radke
- Department
of Chemical and Biomolecular Engineering and ‡Vision Science Group, University of California, Berkeley, Berkeley, California, 94720-1462, United States
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10
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Material properties that predict preservative uptake for silicone hydrogel contact lenses. Eye Contact Lens 2013; 38:350-7. [PMID: 23085619 DOI: 10.1097/icl.0b013e318272c470] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To assess material properties that affect preservative uptake by silicone hydrogel lenses. METHODS We evaluated the water content (using differential scanning calorimetry), effective pore size (using probe penetration), and preservative uptake (using high-performance liquid chromatography with spectrophotometric detection) of silicone and conventional hydrogel soft contact lenses. RESULTS Lenses grouped similarly based on freezable water content as they did based on total water content. Evaluation of the effective pore size highlighted potential differences between the surface-treated and non-surface-treated materials. The water content of the lens materials and ionic charge are associated with the degree of preservative uptake. CONCLUSIONS The current grouping system for testing contact lens-solution interactions separates all silicone hydrogels from conventional hydrogel contact lenses. However, not all silicone hydrogel lenses interact similarly with the same contact lens solution. Based upon the results of our research, we propose that the same material characteristics used to group conventional hydrogel lenses, water content and ionic charge, can also be used to predict uptake of hydrophilic preservatives for silicone hydrogel lenses. In addition, the hydrophobicity of silicone hydrogel contact lenses, although not investigated here, is a unique contact lens material property that should be evaluated for the uptake of relatively hydrophobic preservatives and tear components.
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11
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Kotsmar C, Sells T, Taylor N, Liu DE, Prausnitz JM, Radke CJ. Aqueous Solute Partitioning and Mesh Size in HEMA/MAA Hydrogels. Macromolecules 2012. [DOI: 10.1021/ma3018487] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Csaba Kotsmar
- Department
of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Teresa Sells
- Department
of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - Nicole Taylor
- Department
of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - David E. Liu
- Department
of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - J. M. Prausnitz
- Department
of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
| | - C. J. Radke
- Department
of Chemical and Biomolecular
Engineering, University of California, Berkeley, Berkeley, California 94720, United States
- Vision Science Group, University of California, Berkeley, Berkeley, California
94720, United States
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12
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Proposed Silicone Hydrogel Contact Lens Grouping System for Lens Care Product Compatibility Testing. Eye Contact Lens 2012; 38:358-62. [DOI: 10.1097/icl.0b013e318260c959] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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