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Wang G, Zhu Y, Liu Y, Yang M, Zeng L. Mesenchymal Stem Cells-Derived Exosomal miR-223-3p Alleviates Ocular Surface Damage and Inflammation by Downregulating Fbxw7 in Dry Eye Models. Invest Ophthalmol Vis Sci 2024; 65:1. [PMID: 39352716 PMCID: PMC11451833 DOI: 10.1167/iovs.65.12.1] [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: 01/19/2024] [Accepted: 09/05/2024] [Indexed: 10/05/2024] Open
Abstract
Purpose Our previous study indicated that exosomes derived from mouse adipose-derived mesenchymal stem cells (mADSC-Exos) alleviated the benzalkonium chloride (BAC)-induced mouse dry eye model. However, the specific active molecules in mADSC-Exos that contribute to anti-dry eye therapy remain unidentified. In this study, we aimed to investigate the efficacy and mechanisms of miR-223-3p derived from mADSC-Exos in dry eye models. Methods Enzyme-linked immunosorbent assay (ELISA) experiments were conducted to determine miR-223-3p derived from mADSC-Exos that exerted anti-inflammatory effects on hyperosmolarity-induced mouse corneal epithelial cells (MCECs). The therapeutic efficacy of miR-223-3p was evaluated in mice with dry eye induced by either BAC or scopolamine (Scop). Mice were randomly assigned to 5 groups: sham, model, miR-223-3p overexpression, miR-223-3p knockdown, and 0.1% pranoprofen (positive group). Post-treatment, the severity of dry eye symptoms, and the pro-inflammatory cytokine levels were assessed. The effect of miR-223-3p on silencing the target gene was verified using ELISA and dual luciferase reporter assays. Results The mADSC-Exos that knocked out miR-223-3p did not reduce interleukin (IL)-6 content. Supplementing with miR-223-3p could restore the reduction of IL-6. The miR-223-3p effectively ameliorated ocular surface damage and decreased pro-inflammatory cytokines or chemokines in both BAC- and Scop-induced mouse dry eye models. Furthermore, miR-223-3p inhibited cell apoptosis. F-box and WD repeat domain-containing 7 (Fbxw7) was the potential direct target of miR-223-3p. The miR-223-3p suppressed the 3'-untranslated region of Fbxw7. The Fbxw7 knockdown suppressed hyperosmolarity-induced inflammation in MCECs. Conclusions The mADSC-derived exosomal miR-223-3p mitigates ocular surface damage and inflammation, indicating its potential as a promising treatment option for dry eye.
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Affiliation(s)
- Guifang Wang
- Ophthalmology Department, Loudi Central Hospital, Loudi, Hunan, China
| | - Yujie Zhu
- Ophthalmology Department, Loudi Central Hospital, Loudi, Hunan, China
| | - Yuzhen Liu
- Ophthalmology Department, Loudi Central Hospital, Loudi, Hunan, China
| | - Mulin Yang
- Ophthalmology Department, Loudi Central Hospital, Loudi, Hunan, China
| | - Li Zeng
- Ophthalmology Department, Loudi Central Hospital, Loudi, Hunan, China
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Yang M, Pan H, Chen T, Chen X, Ning R, Ye Q, Chen A, Li J, Li S, Zhao N, Wu Y, Fu X, Meek KM, Chen L, Wang X, Chen Z, Zhou X, Huang J. Customized Corneal Cross-Linking with Microneedle-Mediated Riboflavin Delivery for Keratoconus Treatment. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2408136. [PMID: 39246198 DOI: 10.1002/adma.202408136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 08/18/2024] [Indexed: 09/10/2024]
Abstract
In this study, a novel customized corneal cross-linking (CXL) treatment is explored that utilizes microneedles (MNs) for targeted riboflavin (RF) administration prior to the CXL procedure. Unlike the conventional "one-size-fits-all" approach, this protocol offers an option for more precise and efficacious treatment. To simulate a customized corneal crosslinking technique, four distinct microneedle (MN) molds designs, including circular, semi-circular, annular and butterfly shaped, are crafted for loading an optimized RF-hyaluronic acid solution and for the subsequent fabrication of MN arrays with varying morphologies. These MNs can gently puncture the corneal epithelium while preserving the integrity of the underlying stromal layer. Following the application of these microneedles, RF solution is replenished to enhance the RF content within the stroma through the punctures created by the MNs, resulting in exceptional customized corneal cross-linking effects that are comparable to the conventional epi-off CXL protocol. Additionally, it flattened the corneal curvature within the treated zone and facilitated rapid postoperative recovery of corneal tissue. These findings suggest that the integration of customized microneedle RF delivery with corneal crosslinking technology represents a potential novel treatment modality, holding promise for the tailored treatment of corneal pathologies, and offering a more precise and efficient alternative to traditional methods.
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Affiliation(s)
- Mei Yang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Hongxian Pan
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Tingting Chen
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Xin Chen
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Rui Ning
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Qianfang Ye
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Aodong Chen
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Jiawei Li
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Siheng Li
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Nan Zhao
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Yue Wu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Xueyu Fu
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Keith M Meek
- School of Optometry and Vision Sciences, Cardiff Institute for Tissue Engineering and Repair School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Redwood Building, King Edward VII Avenue, Cardiff, CF10 3NB, UK
| | - Lingxin Chen
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Xiaoying Wang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Zhongxing Chen
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Xingtao Zhou
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
| | - Jinhai Huang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, NHC Key laboratory of Myopia and Related Eye Diseases, Key Laboratory of Myopia and Related Eye Diseases, Chinese Academy of Medical Sciences, Shanghai Research Center of Ophthalmology and Optometry, Fudan University, Shanghai, 200030, China
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Li X, Chen C, Chen Y, Jiang K, Zhao X, Zhang F, Li Y. Oridonin ameliorates ocular surface inflammatory responses by inhibiting the NLRP3/caspase-1/GSDMD pyroptosis pathway in dry eye. Exp Eye Res 2024; 245:109955. [PMID: 38843984 DOI: 10.1016/j.exer.2024.109955] [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: 09/27/2023] [Revised: 04/26/2024] [Accepted: 06/02/2024] [Indexed: 06/11/2024]
Abstract
Chronic inflammation is one of the central drivers in the development of dry eye disease (DED), in which pyroptosis induced by the NLRP3/caspase-1/gasdermin D (GSDMD) pathway plays a key role. This pathway has become a major target for the treatment of a variety of inflammatory disorders. Oridonin (Ori) is a naturally occurring substance with anti-inflammatory properties obtained from Rabdosia rubescens. Whether Ori can exert an anti-inflammatory effect on DED, and its anti-inflammatory mechanism of action, are still unknown. This experiment is intended to investigate the impact of Ori on the hyperosmolarity-induced NLRP3/caspase-1/GSDMD pyroptosis pathway in immortalized human corneal epithelial (HCE-T) cells, as well as its efficacy and mechanism of action on ocular surface injury in DED mice. Our study showed that Ori could inhibit hyperosmotic-induced pyroptosis through the NLRP3/caspase-1/GSDMD pathway in HCE-T cells, and similarly, Ori inhibited the expression of this pathway in DED mice. Moreover, Ori was protective against hyperosmolarity-induced HCE-T cell damage. In addition, we found that the morphology and number of HCE-T cells were altered under culture conditions of various osmolarities. With increasing osmolarity, the proliferation, migration, and healing ability of HCE-T cells decreased significantly, and the expression of N-GSDMD was elevated. In a mouse model of DED, Ori application inhibited the expression of the NLRP3/caspase-1/GSDMD pyroptosis pathway, improved DED signs and injury, decreased corneal sodium fluorescein staining scores, and increased tear volume. Thus, our study suggests that Ori has potential applications for the treatment of DED, provides potential novel therapeutic approaches to treat DED, and provides a theoretical foundation for treating DED using Ori.
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Affiliation(s)
- Xiaojing Li
- Medical College, Graduate School of Medicine, Qingdao University, Qingdao, 266071, China; Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China
| | - Chen Chen
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China
| | - Ying Chen
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China
| | - Kaiwen Jiang
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China
| | - Xinmei Zhao
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China
| | - Fenglan Zhang
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China.
| | - Yuanbin Li
- Department of Ophthalmology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, China.
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Cutrupi F, De Luca A, Di Zazzo A, Micera A, Coassin M, Bonini S. Real Life Impact of Dry Eye Disease. Semin Ophthalmol 2023; 38:690-702. [PMID: 37095685 DOI: 10.1080/08820538.2023.2204931] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/21/2023] [Accepted: 03/22/2023] [Indexed: 04/26/2023]
Abstract
Dry Eye Disease (DED) is an increasingly common condition that affects between 5% and 50% of the global population. Even though DED is most frequently diagnosed in older people, it has also been diagnosed in young adults and adolescents more frequently in recent years (employees, gamers). People can experience different types of symptoms and find it challenging to read, watch TV, cook, climb stairs, and meet friends. Mild and severe dry eye can reduce quality of life similarly to mild psoriasis and moderate-to-severe angina. Furthermore, DED patients experience serious difficulties driving vehicles, especially at night, and show a decrease in work productivity, which, when combined with the relevant indirect cost that this condition produces, poses a serious challenge in our days. In addition, DED patients are more likely to develop depression and suicidal ideations and experience frequent sleep disorders. Finally, it is discussed how lifestyle changes, such as increased physical activity, blinking exercises, and a proper diet, have positive implications for the management of this condition. Our aim is to draw attention to the negative effects of dry eye in real life, which are unique to each patient, especially as they relate to the non-visual symptoms experienced by DED patients.
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Affiliation(s)
- Francesco Cutrupi
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
| | - Andrea De Luca
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
| | - Antonio Di Zazzo
- Research Laboratories in Ophthalmology, IRCCS Bietti Foundation, Rome, Italy
| | - Alessandra Micera
- Research Laboratories in Ophthalmology, IRCCS Bietti Foundation, Rome, Italy
| | - Marco Coassin
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
| | - Stefano Bonini
- Ophthalmology Complex Operative Unit, University Campus Bio-Medico, Rome, Italy
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5
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Sun C, Chen X, Huang Y, Zou H, Fan W, Yang M, Yuan R. Effects of aerobic exercise on tear secretion and tear film stability in dry eye patients. BMC Ophthalmol 2022; 22:9. [PMID: 34983454 PMCID: PMC8725542 DOI: 10.1186/s12886-021-02230-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 12/23/2021] [Indexed: 12/01/2022] Open
Abstract
Background To study the effects of aerobic exercise (AE) on tear secretion and tear film stability in dry eye patients. Methods This study consisted of two parts, each part included 3 groups, namely dry eye without AE group, dry eye with AE group and pre-clinical dry eye with AE group. In part 1, we studied the variations of Schirmer I test and six tear compositions before and after AE (34 eyes in each group). In part 2, we studied the variations of tear meniscus height, first and average non-invasive tear breakup time (F-NITBUT and A-NITBUT), lipid layer thickness, number of incomplete and complete blinks, partial blink rate (PBR) and visual acuity before and after AE (30 eyes in each group). Results In dry eye with AE group, Schirmer I test at 0 min after AE increased significantly compared to baseline (P < 0.001), the oxidative stress marker 8-hydroxy-2′-deoxyguanosine after AE decreased significantly compared to baseline (P = 0.035, P = 0.045), F-NITBUT and A-NITBUT after AE prolonged significantly compared to baseline (P < 0.001, P = 0.007, P = 0.036; P < 0.001, P = 0.001, P = 0.044), number of incomplete blinks and PBR at 10 min after AE decreased significantly compared to baseline (P < 0.001; P < 0.001) while number of complete blinks increased significantly (P < 0.001). Besides, significant differences were also found between dry eye with AE group and dry eye without AE group at all above corresponding time point (P < 0.05). Conclusion AE promotes tear secretion and improves tear film stability in dry eye patients. AE may be a potential treatment for dry eye. Trial registration Chinese Clinical Trial Registry, ChiCTR2000038673. Registered 27 September 2020, Supplementary Information The online version contains supplementary material available at 10.1186/s12886-021-02230-9.
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Affiliation(s)
- Chao Sun
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China
| | - Xiaofan Chen
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China.
| | - Yanming Huang
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China
| | - Huan Zou
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China
| | - Wei Fan
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China
| | - Mei Yang
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China
| | - Rongdi Yuan
- Department of Ophthalmology, the Second Affiliated Hospital of Army Medical University, 183#, Xinqiaozheng St., Shapingba District, Chongqing, 400037, People's Republic of China.
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Ross E, Furniss E, Chandramohan N, Markoulli M. The multi-faceted approach to dry eye disease. Clin Exp Optom 2021; 104:417-420. [PMID: 33689611 DOI: 10.1080/08164622.2021.1877534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Affiliation(s)
- Emilie Ross
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia
| | - Emma Furniss
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia.,The Dry Eye Institute, Sydney, Australia
| | - Nivaasheni Chandramohan
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia.,Macular Disease Foundation, Sydney, Australia
| | - Maria Markoulli
- School of Optometry & Vision Science, University of New South Wales, Sydney, Australia
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Zhao L, Wang H, Du X. The therapeutic use of quercetin in ophthalmology: recent applications. Biomed Pharmacother 2021; 137:111371. [PMID: 33561647 DOI: 10.1016/j.biopha.2021.111371] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/27/2021] [Accepted: 02/03/2021] [Indexed: 12/15/2022] Open
Abstract
Quercetin is a natural flavonol antioxidant found in various plant sources and food samples. It is well known for its notable curative effects on the treatment of ophthalmic diseases due to various biological activities, such as antioxidant, anti-inflammatory, and anti-fibrosis activities. This review will discuss the latest developments in therapeutic quercetin for the treatment of keratoconus, Graves' orbitopathy, ocular surface, cataracts, glaucoma, retinoblastoma, and other retinal diseases.
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Affiliation(s)
- Lianghui Zhao
- Weifang Medical University, Weifang, Shandong 261021, China; Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong 266071, China
| | - Hongwei Wang
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong 266071, China; State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong 266071, China.
| | - Xianli Du
- Qingdao Eye Hospital of Shandong First Medical University, Qingdao, Shandong 266071, China; State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Shandong First Medical University & Shandong Academy of Medical Sciences, Qingdao, Shandong 266071, China.
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8
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Chen X, Lee S, Zhang T, Duan T, Pasricha ND, Schallhorn JM, Levin MH, Koprivica V, Verkman AS. Nanomolar Potency Aminophenyltriazine CFTR Activator Reverses Corneal Epithelial Injury in a Mouse Model of Dry Eye. J Ocul Pharmacol Ther 2020; 36:147-153. [PMID: 31934802 DOI: 10.1089/jop.2019.0087] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Purpose: Dry eye disorders are a major health care burden. We previously reported the identification of N-methyl-N-phenyl-6-(2,2,3,3-tetrafluoropropoxy)-1,3,5-triazine-2,4-diamine [cystic fibrosis transmembrane conductance regulator (CFTR)act-K267], which activated human wild-type CFTR chloride conductance with EC50 ∼ 30 nM. Here, we report in vivo evidence for CFTRact-K267 efficacy in an experimental mouse model of dry eye using a human compatible ophthalmic vehicle. Methods: CFTR activation in mice in vivo was demonstrated by ocular surface potential difference (OSPD) measurements. Ocular surface pharmacodynamics was measured in tear fluid samples obtained at different times after topical administration of CFTRact-K267. Dry eye was produced by lacrimal duct cautery (LDC) and corneal epithelial injury and was assessed by Lissamine green (LG) staining. Results: OSPD measurements demonstrated a hyperpolarization of -8.6 ± 3 mV (standard error of the mean, 5 mice) in response to CFTRact-K267 exposure in low chloride solution that was reversed by a CFTR inhibitor. Following single-dose topical administration of 2 nmol CFTRact-K267, tear fluid CFTRact-K267 concentration was >500 nM for more than 6 h. Following LDC, corneal surface epithelial injury, as assessed by LG staining, was substantially reversed in 10 of 12 eyes receiving 2 nmol CFTRact-K267 3 times daily starting on day 2, when marked epithelial injury had already occurred. Improvement was seen in 3 of 12 vehicle-treated eyes. Conclusion: These studies provide in vivo evidence in mice for the efficacy of a topical, human use compatible CFTRact-K267 formulation in stimulating chloride secretion and reversing corneal epithelial injury in dry eye.
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Affiliation(s)
- Xiaolan Chen
- Department of Medicine and Physiology and University of California, San Francisco, California.,Jiangsu Agri-Animal Husbandry Vocational College, Taizhou, China
| | - Sujin Lee
- Department of Medicine and Physiology and University of California, San Francisco, California
| | - Tianyi Zhang
- Department of Medicine and Physiology and University of California, San Francisco, California
| | - Tianying Duan
- Department of Medicine and Physiology and University of California, San Francisco, California
| | - Neel D Pasricha
- Department of Ophthalmology, University of California, San Francisco, California
| | - Julie M Schallhorn
- Department of Ophthalmology, University of California, San Francisco, California
| | - Marc H Levin
- Department of Ophthalmology, Palo Alto Medical Foundation, Palo Alto, California
| | - Vuk Koprivica
- Vanda Pharmaceuticals, Inc., Washington, District of Columbia
| | - Alan S Verkman
- Department of Medicine and Physiology and University of California, San Francisco, California
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9
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Georgiev GA, Eftimov P, Yokoi N. Contribution of Mucins towards the Physical Properties of the Tear Film: A Modern Update. Int J Mol Sci 2019; 20:E6132. [PMID: 31817367 PMCID: PMC6941008 DOI: 10.3390/ijms20246132] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Revised: 11/30/2019] [Accepted: 12/02/2019] [Indexed: 12/18/2022] Open
Abstract
Instability of the tear film (TF) protecting the ocular surface results in dry eye syndrome (DES), the most prevalent public health ophthalmic disease affecting the quality of life of 10 to 30% of the human population worldwide. Although the impact of the tear film lipid layer (TFLL) and of the aqueous tears (AT) to the TF stability is extensively studied, in contrast the contribution of the secretory mucins (SM) and of the membrane-associated mucins (MAM), i.e., one of the most abundant molecular classes in AT and in the corneal epithelium respectively, remains poorly defined. However, it is well known that in DES both types of mucins are quantitatively or qualitatively deficient. Numerous studies since the 1990s until now have proposed direct involvement of SM and MAM in the material properties (viscoelasticity, hydration, and protection of the ocular surface; synergistic cooperation with the rest of the TF layers; etc.) and stability of TF. These theories will be reviewed here in the context of the classical and modern in vitro and in vivo results that allow their reappraisal and in view of the novel mucin secretion enhancing pharmaceuticals, which have opened innovative routes for the therapy of DES.
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Affiliation(s)
- Georgi As Georgiev
- Department of Optics and Spectroscopy, Faculty of Physics, St. Kliment Ohridski University of Sofia, 5 James Bourchier Blvd, 1164 Sofia, Bulgaria
| | - Petar Eftimov
- Department of Cytology, Histology and Embryology, Faculty of Biology, St. Kliment Ohridski University of Sofia, 8 Dragan Tzankov Blvd., 1164 Sofia, Bulgaria
| | - Norihiko Yokoi
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto 602-0841, Japan
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10
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Ai X, Hou Y, Wang X, Wang X, Liang Y, Zhu Z, Wang P, Zeng Y, Li X, Lai X, Meng X, Li Q. Amelioration of dry eye syndrome in db/db mice with diabetes mellitus by treatment with Tibetan Medicine Formula Jikan Mingmu Drops. JOURNAL OF ETHNOPHARMACOLOGY 2019; 241:111992. [PMID: 31150794 DOI: 10.1016/j.jep.2019.111992] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 05/22/2019] [Accepted: 05/27/2019] [Indexed: 05/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jikan Mingmu Drops (JMD), a traditional Tibetan medicine containing six herbs, has been used to treat dry eye syndrome (DES) in individuals with diabetes mellitus. AIM OF STUDY However, the activity of JMD ameliorates DES with diabetes mellitus has not been previously examined. The aim of the study is to investigate the molecular mechanism of JMD on db/db mice. MATERIALS AND METHODS The main chemical constituents of JMD were analyzed by high-performance liquid chromatography and gas chromatography-mass spectrometry. DES was then induced in db/db mice by applying 0.2% benzalkonium chloride to the ocular surface for 7 days. Eye drops containing JMD (0.25, 0.5, or 1 g/mL) or vehicle subsequently were administered three times daily for another 7 days, and the therapeutic effects were evaluated by phenol red thread tear and sodium fluorescein tests. Conjunctival specimens were subjected to hematoxylin and eosin staining and periodic acid-Schiff staining to examine pathological changes and number of goblet cells. ELISA was performed to assess the levels of various inflammatory cytokines. RESULTS JMD contains hydroxysafflor yellow A, magnoflorine, jatrorrhizine hydrochloride, palmatine hydrochloride, berberine hydrochloride, gallic acid, ellagic acid, tauroursodeoxycholic acid, camphor, isoborneol, borneol, trans-cinnamic acid, and muscone. JMD treatment significantly increased the tear volume, decreased the corneal fluorescein staining score, restored the morphology and structure of conjunctival epithelial cells, and markedly downregulated the levels of interleukin (IL)-6, IL-17α, IL-1β, tumor necrosis factor-α, and vascular endothelial growth factor in the conjunctiva. Further data showed that these protective effects were accompanied by inhibition of inflammation in a dose-dependent manner. CONCLUSIONS Amelioration of DES in db/db mice with diabetes mellitus by treatment with Tibetan medicine formula JMD maybe related to its anti-inflammatory effects.
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Affiliation(s)
- Xiaopeng Ai
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Ya Hou
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xiaobo Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xiaoyan Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yusheng Liang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Zhengwen Zhu
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Ping Wang
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Yong Zeng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Xianjia Li
- Tibetan Medical College, Qinghai University, Xining, 810001, China
| | - Xianrong Lai
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Xianli Meng
- School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China; Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Qi'en Li
- Tibetan Medical College, Qinghai University, Xining, 810001, China.
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Ocular drugs and drug delivery systems — Current trends and future perspectives. Drug Discov Today 2019; 24:1425-1426. [DOI: 10.1016/j.drudis.2019.07.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 07/15/2019] [Indexed: 01/05/2023]
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Tavakoli A, Flanagan JL. The Case for a More Holistic Approach to Dry Eye Disease: Is It Time to Move beyond Antibiotics? Antibiotics (Basel) 2019; 8:E88. [PMID: 31262073 PMCID: PMC6783892 DOI: 10.3390/antibiotics8030088] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 06/27/2019] [Indexed: 12/28/2022] Open
Abstract
Dry eye disease (DED) is one of the most frequent presentations to optometrists with over 16 million US adults (6.8% of adult population) diagnosed as having this disorder. The majority of associated marketed products offer relief from symptomatology but do not address aetiology. DED harbours many distinguishing features of a chronic inflammatory disorder. The recent explosion in human microbiome research has sparked interest in the ocular microbiome and its role in the preservation and extension of ocular surface health and in the contribution of the gut microbiome to chronic systemic inflammation and associated "Western life-style" diseases. With a significant lack of success for many patients using currently available DED treatments, in this era of the microbiome, we are interested in exploring potential novel therapies that aim to reconstitute healthy bacterial communities both locally and distally (in the gut) as a treatment for DED. Although this direction of investigation is in its infancy, burgeoning interest makes such a review timely. This paper considers a number of studies into the use functional foods and associated products to ameliorate dry eye.
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Affiliation(s)
- Azadeh Tavakoli
- School of Optometry and Vision Science, University of New South Wales, Sydney, 2052, Australia
| | - Judith Louise Flanagan
- School of Optometry and Vision Science, University of New South Wales, Sydney, 2052, Australia.
- Brien Holden Vision Institute, Sydney, 2052, Australia.
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