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Wang H, Wang Q, Su Y, Wang J, Zhang X, Liu Y, Zhang J. Thermosensitive Triblock Copolymer for Slow-Release Lubricants under Ocular Conditions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1675-1687. [PMID: 38127457 DOI: 10.1021/acsami.3c12389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The ocular environment is crucial for a biological lubrication system. An unstable condition of tear film may cause a series of ocular diseases due to serious friction, such as dry eye syndrome, which has drawn extensive attention nowadays. In this study, an in vitro biocompatible superlubricity system, containing thermogelling copolymers (PCGA-PEG-PCGA) and slow-release lubricant (PEG 300/Tween 80), was constructed. First, the sol-gel transition temperature and gel strength of PCGA-PEG-PCGA were adjusted based on the ocular environment by regulating the length of PCGA blocks. Furthermore, the copolymer hydrogel exhibited a reliable slow-release property within 10 days and showed low cytotoxicity. Then, the superlubricity (coefficient of friction of approximately 0.005) was achieved with its released PEG 300/Tween 80 aqueous solution at the sliding velocity range of 1-100 mm s-1 and pressure range of 10-22 kPa. However, the lubrication behaviors varied, while PEG 300 chains and Tween 80 micelles were demonstrated to form a multilayer and a single layer adsorption structure on the sliding surface, respectively. On the whole, the composite lubrication systems, especially the one composed of Tween 80, showed excellent tribological properties owing to the stable slow-release and full hydration effects under ocular conditions, which hold great potential for improving ocular lubrication and maintaining human visual health.
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Affiliation(s)
- Hongdong Wang
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Qi Wang
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
| | - Yunjuan Su
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
| | - Junyu Wang
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Xiacong Zhang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Yuhong Liu
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Jianhua Zhang
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
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Faruk Yilmaz O, Sarmis A, Ali Mutlu M, Büsra Sahin Z, Pelin Kaya S, Oguz H. Bacterial contamination of multi-use tear drops, gels, and ointments. Cont Lens Anterior Eye 2023; 46:102064. [PMID: 37806847 DOI: 10.1016/j.clae.2023.102064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 09/22/2023] [Accepted: 09/27/2023] [Indexed: 10/10/2023]
Abstract
PURPOSE This study aimed to investigate the bacterial contamination of multi-use tear drops, gels, and ointments that patients use at home. METHOD A total of 271 multi-use containers used by 168 patients were examined. Conjunctival culture samples were obtained from patients who used tear drops, gels, and ointments that were found to be contaminated. RESULTS Bacterial contamination was detected in 33 (12.2 %) out of the 271 containers. The contamination rate was 7.9 % in tear drops, 11.7 % in gels, and 32 % in ointments. A statistically significant difference was found between the drops, gels, and ointment groups (P = 0.04). Bacterial contamination was detected in 25 (18.9 %) out of 132 collapsible tubes and 8 (5.8 %) out of 139 plastic bottles (P = 0.01). Important bacteria, including Pseudomonas stutzeri, Pseudomonas aeruginosa, Bacillus licheniformis, Paenibacillus pabuli, Proteus mirabilis, Pantoea agglomerans, Morganella morganii, Serratia marcescens, and Serratia liquefaciens, were detected. Mucorales spp. fungus was seen in a gel. Staphylococcus epidermidis, methicillin-resistant Staphylococcus aureus, and M. morganii were found in the conjunctival microbiota of three patients. CONCLUSION The overall contamination rate of ocular lubricants was low (12.2%); however, a significant difference was found between the drops, gels, and ointments. The contamination rate was higher in gels and ointments than that in drops. The contamination rate was found to be increased in the collapsible tube. The use of ocular lubricants is safe; however, patients must be cautious when using multi-use tear drops, gels, and ointments to avoid contamination. Whenever possible, bottles should be preferred instead of collapsible tubes.
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Affiliation(s)
- Omer Faruk Yilmaz
- Goztepe Prof. Dr. Süleyman Yalçin City Hospital, Department of Ophthalmology, Istanbul, Turkey.
| | - Abdurrahman Sarmis
- Goztepe Prof. Dr. Süleyman Yalçin City Hospital, Department of Medical Microbiology, Istanbul, Turkey
| | - Muhammed Ali Mutlu
- Fatih Sultan Mehmet Training and Research Hospital, Department of Medical Microbiology, Istanbul, Turkey
| | - Zahide Büsra Sahin
- Istanbul Medeniyet University Faculty of Medicine, Department of Ophthalmology, Istanbul, Turkey
| | - Sabire Pelin Kaya
- Istanbul Medeniyet University Faculty of Medicine, Department of Ophthalmology, Istanbul, Turkey
| | - Halit Oguz
- Istanbul Medeniyet University Faculty of Medicine, Department of Ophthalmology, Istanbul, Turkey
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Kim DJ, Jung MY, Park JH, Pak HJ, Kim M, Chuck RS, Park CY. Moxifloxacin releasing intraocular implant based on a cross-linked hyaluronic acid membrane. Sci Rep 2021; 11:24115. [PMID: 34916593 PMCID: PMC8677739 DOI: 10.1038/s41598-021-03605-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/07/2021] [Indexed: 11/09/2022] Open
Abstract
Intraocular antibiotic delivery is an important technique to prevent bacterial infection after ophthalmic surgery, such as cataract surgery. Conventional drug delivery methods, such as antibiotic eye drops, have limitations for intraocular drug delivery due to the intrinsic barrier effect of the cornea. Therefore, frequent instillation of antibiotic eyedrops is necessary to reach a sufficient bactericidal concentration inside the eye. In this study, an intraocular implant, MXF-HA, that combines hyaluronic acid (HA) and moxifloxacin (MXF) was developed to increase the efficiency of intraocular drug delivery after surgery. MXF-HA is manufactured as a thin, transparent, yellow-tinted membrane. When inserted into the eye in a dry state, MXF-HA is naturally hydrated and settles in the eye, and the MXF contained therein is delivered by hydrolysis of the polymer over time. It was confirmed through in vivo experiments that MXF delivery was maintained in the anterior chamber of the eye at a concentration sufficient to inhibit Pseudomonas aeruginosa and Staphylococcus aureus for more than 5 days after implantation. These results suggest that MXF-HA can be utilized as a potential drug delivery method for the prevention and treatment of bacterial infections after ophthalmic surgery.
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Affiliation(s)
- Dong Ju Kim
- Department of Ophthalmology, Graduate School of Medicine, Dongguk University, Seoul, South Korea
| | - Mi-Young Jung
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, 814, Siksadong, Ilsan-dong-gu, Goyang, Kyunggido, 410-773, South Korea
| | - Joo-Hee Park
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, 814, Siksadong, Ilsan-dong-gu, Goyang, Kyunggido, 410-773, South Korea
| | - Ha-Jin Pak
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, 814, Siksadong, Ilsan-dong-gu, Goyang, Kyunggido, 410-773, South Korea
| | - Martha Kim
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, 814, Siksadong, Ilsan-dong-gu, Goyang, Kyunggido, 410-773, South Korea
| | - Roy S Chuck
- Department of Ophthalmology and Visual Sciences, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Choul Yong Park
- Department of Ophthalmology, Dongguk University, Ilsan Hospital, 814, Siksadong, Ilsan-dong-gu, Goyang, Kyunggido, 410-773, South Korea.
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Fatehi Hassanabad A, Zarzycki AN, Jeon K, Dundas JA, Vasanthan V, Deniset JF, Fedak PWM. Prevention of Post-Operative Adhesions: A Comprehensive Review of Present and Emerging Strategies. Biomolecules 2021; 11:biom11071027. [PMID: 34356652 PMCID: PMC8301806 DOI: 10.3390/biom11071027] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 02/06/2023] Open
Abstract
Post-operative adhesions affect patients undergoing all types of surgeries. They are associated with serious complications, including higher risk of morbidity and mortality. Given increased hospitalization, longer operative times, and longer length of hospital stay, post-surgical adhesions also pose a great financial burden. Although our knowledge of some of the underlying mechanisms driving adhesion formation has significantly improved over the past two decades, literature has yet to fully explain the pathogenesis and etiology of post-surgical adhesions. As a result, finding an ideal preventative strategy and leveraging appropriate tissue engineering strategies has proven to be difficult. Different products have been developed and enjoyed various levels of success along the translational tissue engineering research spectrum, but their clinical translation has been limited. Herein, we comprehensively review the agents and products that have been developed to mitigate post-operative adhesion formation. We also assess emerging strategies that aid in facilitating precision and personalized medicine to improve outcomes for patients and our healthcare system.
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Affiliation(s)
- Ali Fatehi Hassanabad
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 2N9, Canada; (A.F.H.); (A.N.Z.); (J.A.D.); (V.V.); (J.F.D.)
| | - Anna N. Zarzycki
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 2N9, Canada; (A.F.H.); (A.N.Z.); (J.A.D.); (V.V.); (J.F.D.)
| | - Kristina Jeon
- Department of Anesthesiology and Pain Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB T6G 2R7, Canada;
| | - Jameson A. Dundas
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 2N9, Canada; (A.F.H.); (A.N.Z.); (J.A.D.); (V.V.); (J.F.D.)
| | - Vishnu Vasanthan
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 2N9, Canada; (A.F.H.); (A.N.Z.); (J.A.D.); (V.V.); (J.F.D.)
| | - Justin F. Deniset
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 2N9, Canada; (A.F.H.); (A.N.Z.); (J.A.D.); (V.V.); (J.F.D.)
- Department of Physiology and Pharmacology, University of Calgary, Calgary, AB T2N 1N4, Canada
| | - Paul W. M. Fedak
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB T2N 2N9, Canada; (A.F.H.); (A.N.Z.); (J.A.D.); (V.V.); (J.F.D.)
- Correspondence:
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Hyaluronic acid in ocular drug delivery. Carbohydr Polym 2021; 264:118006. [DOI: 10.1016/j.carbpol.2021.118006] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 12/12/2022]
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Rodrigues J, Kuruvilla ME, Vanijcharoenkarn K, Patel N, Hom MM, Wallace DV. The spectrum of allergic ocular diseases. Ann Allergy Asthma Immunol 2020; 126:240-254. [PMID: 33276116 DOI: 10.1016/j.anai.2020.11.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 11/23/2020] [Accepted: 11/24/2020] [Indexed: 01/01/2023]
Abstract
OBJECTIVE The purpose of this article is to review the pathophysiologic mechanisms, differential diagnosis, evaluation, and treatment of the various manifestations of ocular allergy, with an especial focus on immunoglobulin E (IgE)-mediated disease. DATA SOURCES A PubMed search was performed to include articles, using the search terms ocular allergy and allergic conjunctivitis. STUDY SELECTIONS Recent and relevant human studies in the English language pertaining to our topic of study were selected. Animal studies pertaining to pathophysiology of ocular allergy were also reviewed. We focused on clinical trials, practice guidelines, reviews, and systematic reviews. In addition, case reports were reviewed if they described rare clinical presentations, disease mechanisms, or novel therapies. RESULTS Ocular allergy encompasses both IgE- and non-IgE-mediated disease, and the clinical severity may range from mild to sight-threatening inflammation. A comprehensive treatment regimen including education, lifestyle measures, topical therapies, and even systemic interventions may be necessary for the effective management of ocular allergies, tailored according to symptom severity. CONCLUSION Ocular allergy is frequently encountered by allergists and eye-care specialists, and despite progressively increasing incidence, it often remains underdiagnosed and, hence, untreated.
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Affiliation(s)
- Jonathan Rodrigues
- Allergy & Immunology, Sanford Health, Bismarck, North Dakota; Department of Internal Medicine and Department of Pediatrics, University of North Dakota School of Medicine and Health Sciences, Grand Forks, North Dakota.
| | - Merin E Kuruvilla
- Division of Pulmonary, Allergy, Critical Care, and Sleep, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Kristine Vanijcharoenkarn
- Division of Pulmonary, Allergy, Critical Care, and Sleep, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia
| | - Nikki Patel
- Allergy & Immunology, Sanford Health, Sioux Falls, South Dakota
| | | | - Dana V Wallace
- Allergy and Immunology, Nova Southeastern University, Davie, Florida
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Abstract
Background: Ocular allergies affect an estimated 40% of the population, 98% of which are because of allergic conjunctivitis and includes tear film dysfunction. With the current advent of both repurposed drugs for ocular allergies, as well as novel drugs, lubricants and methods of administration, there is a need to update new treatments to optimize the care of ocular allergy patients. Methods: An overview of mediators, clinical characteristics and management is provided in a summary format. Results: Lubricants (best when refrigerated provide immediate relief that is short lived (several minutes) due to its dilutional effect on mediators and pollen in the tear film. Immediate and longer-term benefit occurs from different topical and oral medications - primarily histamine receptor agonists. Conclusion: The newest prescription topical ophthalmic histamine H1 receptor antagonist (an inverse agonist) to be approved by the U.S. Food and Drug Administration in the past 10 years (U.S. NDA approved May 30, 2017) is cetirizine ophthalmic solution for the treatment of ocular itching with allergic conjunctivitis in adults and in children more than 2 years old.
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Affiliation(s)
- Leonard Bielory
- From the Rutgers Center of Environmental Prediction, Rutgers University, Springfield, New Jersey
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