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Zeng Y, Lin Y, Yang J, Wang X, Zhu Y, Zhou B. The Role and Mechanism of Nicotinamide Riboside in Oxidative Damage and a Fibrosis Model of Trabecular Meshwork Cells. Transl Vis Sci Technol 2024; 13:24. [PMID: 38546981 PMCID: PMC10981432 DOI: 10.1167/tvst.13.3.24] [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: 06/10/2023] [Accepted: 02/13/2024] [Indexed: 04/01/2024] Open
Abstract
Purpose To investigate the potential effects and mechanism of nicotinamide riboside (NR) on the oxidative stress and fibrosis model of human trabecular meshwork (HTM) cell line cells. Methods HTM cells were pretreated with NR, followed by the induction of oxidative injury and fibrosis by hydrogen peroxide (H2O2) and TGF-β2, respectively. Cell viability was tested using Hoechst staining and MTT assays, cell proliferation was assessed by EdU assay, and cell apoptosis was detected by flow cytometry and western blotting. DCFH-DA and DHE probes were used to measure the level of reactive oxygen species (ROS), and MitoTracker staining was used to measure the mitochondrial membrane potential (MMP). Fibrotic responses, including cell migration and deposition of extracellular matrix (ECM) proteins, were detected via Transwell assays, qRT-PCR, and immunoblotting. Results NR pretreatment improved the viability, proliferation, and MMP of H2O2-treated HTM cells. Compared to cells treated solely with H2O2, HTM cells treated with both NR and H2O2, exhibited a reduced rate of apoptosis and generation of ROS. Compared with H2O2 pretreatment, NR pretreatment upregulated expression of the JAK2/Stat3 pathway but inhibited mitogen-activated protein kinase (MAPK) pathway expression. Moreover, 10-ng/mL TGF-β2 promoted cell proliferation and migration, which were inhibited by NR pretreatment. Both qRT-PCR and immunoblotting showed that NR inhibited the expression of fibronectin in a TGF-β2-induced fibrosis model. Conclusions NR has a protective effect on oxidative stress and fibrosis in HTM cells, which may be related to the JAK2/Stat3 pathway and MAPK pathway. Translational Relevance Our research provides the ongoing data for potential therapy of NAD+ precursors in glaucoma.
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Affiliation(s)
- Yuping Zeng
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Yijun Lin
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Department of Ophthalmology, National Regional Medical Center, Binghai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
- Fujian Institute of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Fujian Provincial Clinical Medical Research Center of Eye Diseases and Optometry, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Juhua Yang
- Department of Bioengineering and Biopharmaceutics, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Xiaohui Wang
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Department of Ophthalmology, National Regional Medical Center, Binghai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
- Fujian Institute of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Fujian Provincial Clinical Medical Research Center of Eye Diseases and Optometry, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Yihua Zhu
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Department of Ophthalmology, National Regional Medical Center, Binghai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
- Fujian Institute of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Fujian Provincial Clinical Medical Research Center of Eye Diseases and Optometry, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
| | - Biting Zhou
- Department of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Department of Ophthalmology, National Regional Medical Center, Binghai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, Fujian, China
- Fujian Institute of Ophthalmology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
- Fujian Provincial Clinical Medical Research Center of Eye Diseases and Optometry, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China
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Tsai T, Reinehr S, Deppe L, Strubbe A, Kluge N, Dick HB, Joachim SC. Glaucoma Animal Models beyond Chronic IOP Increase. Int J Mol Sci 2024; 25:906. [PMID: 38255979 PMCID: PMC10815097 DOI: 10.3390/ijms25020906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
Glaucoma is a complex and multifactorial disease defined as the loss of retinal ganglion cells (RGCs) and their axons. Besides an elevated intraocular pressure (IOP), other mechanisms play a pivotal role in glaucoma onset and progression. For example, it is known that excitotoxicity, immunological alterations, ischemia, and oxidative stress contribute to the neurodegeneration in glaucoma disease. To study these effects and to discover novel therapeutic approaches, appropriate animal models are needed. In this review, we focus on various glaucoma animal models beyond an elevated IOP. We introduce genetically modified mice, e.g., the optineurin E50K knock-in or the glutamate aspartate transporter (GLAST)-deficient mouse. Excitotoxicity can be mimicked by injecting the glutamate analogue N-methyl-D-aspartate intravitreally, which leads to rapid RGC degeneration. To explore the contribution of the immune system, the experimental autoimmune glaucoma model can serve as a useful tool. Here, immunization with antigens led to glaucoma-like damage. The ischemic mechanism can be mimicked by inducing a high IOP for a certain amount of time in rodents, followed by reperfusion. Thereby, damage to the retina and the optic nerve occurs rapidly after ischemia/reperfusion. Lastly, we discuss the importance of optic nerve crush models as model systems for normal-tension glaucoma. In summary, various glaucoma models beyond IOP increase can be utilized.
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Affiliation(s)
| | | | | | | | | | | | - Stephanie C. Joachim
- Experimental Eye Research Institute, University Eye Hospital, Ruhr-University Bochum, In der Schornau 23-25, 44892 Bochum, Germany; (T.T.); (S.R.); (L.D.); (N.K.); (H.B.D.)
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Feng L, Wang C, Zhang C, Zhang W, Song W. Role of epigenetic regulation in glaucoma. Biomed Pharmacother 2023; 168:115633. [PMID: 37806089 DOI: 10.1016/j.biopha.2023.115633] [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: 08/16/2023] [Revised: 09/23/2023] [Accepted: 10/03/2023] [Indexed: 10/10/2023] Open
Abstract
Glaucoma is the world's leading irreversible blinding eye disease. Lowering intraocular pressure is currently the only effective clinical treatment. However, there is a lack of long-acting IOP-lowering drugs, and some patients still experience retinal ganglion cell loss even with good intraocular pressure control. Currently, there is no effective method for neuroprotection and regeneration in clinical practice for glaucoma. In recent years, epigenetics has been widely researched and reported for its role in glaucoma's neuroprotection and regeneration. This article reviews the changes in histone modifications, DNA methylation, non-coding RNA, and m6A methylation in glaucoma, aiming to provide new perspectives for glaucoma management, protection of retinal ganglion cells, and axon regeneration by understanding epigenetic alterations.
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Affiliation(s)
- Lemeng Feng
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan 410008, PR China; Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Hunan Key Laboratory of Ophthalmology, Changsha, Hunan 410008, PR China
| | - Chao Wang
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan 410008, PR China; Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Hunan Key Laboratory of Ophthalmology, Changsha, Hunan 410008, PR China
| | - Cheng Zhang
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan 410008, PR China; Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Hunan Key Laboratory of Ophthalmology, Changsha, Hunan 410008, PR China
| | - Wulong Zhang
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan 410008, PR China; Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Hunan Key Laboratory of Ophthalmology, Changsha, Hunan 410008, PR China
| | - Weitao Song
- National Clinical Research Center for Geriatric Diseases, Xiangya Hospital of Central South University, Changsha, Hunan 410008, PR China; Eye Center of Xiangya Hospital, Central South University, Changsha, Hunan 410008, PR China; Hunan Key Laboratory of Ophthalmology, Changsha, Hunan 410008, PR China.
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Chen S, Wang N, Xiong S, Xia X. The correlation between primary open-angle glaucoma (POAG) and gut microbiota: a pilot study towards predictive, preventive, and personalized medicine. EPMA J 2023; 14:539-552. [PMID: 37605653 PMCID: PMC10439875 DOI: 10.1007/s13167-023-00336-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 07/29/2023] [Indexed: 08/23/2023]
Abstract
Background Glaucoma is the leading cause of irreversible blindness worldwide. Emerged evidence has shown that glaucoma is considered an immune system related disorder. The gut is the largest immune organ in the human body and the gut microbiota (GM) plays an irreversible role in maintaining immune homeostasis. But, how the GM influences glaucoma remains unrevealed. This study aimed at investigating the key molecules/pathways mediating the GM and the glaucoma to provide new biomarkers for future predictive, preventive, and personalized medicine. Methods Datasets from the primary open-angle glaucoma (POAG) patients (GSE138125) and datasets for target genes of GM/GM metabolites were downloaded from a public database. For GSE138125, the differentially expressed genes (DEGs) between healthy and POAG samples were identified. And the online Venn diagram tool was used to obtain the DEGs from POAG related to GM. After which GM-related DEGs were analyzed by correlation analysis, pathway enrichment analysis, and protein-protein interaction (PPI) network analysis. Human trabecular meshwork cells were used for validation, and the mRNA level of hub genes was verified by quantitative real-time polymerase chain reaction (RT-qPCR) in the in vitro glaucoma model. Results A total of 16 GM-related DEGs in POAG were identified from the above 2 datasets (9 upregulated genes and 7 downregulated genes). Pathway enrichment analysis indicated that these genes are mostly enriched in immune regulation especially macrophages-related pathways. Then 6 hub genes were identified by PPI network analysis and construction of key modules. Finally, RT-qPCR confirmed that the expression of the hub genes in the in vitro glaucoma model was consistent with the results of bioinformatics analysis of the mRNA chip. Conclusion This bioinformatic study elucidates NFKB1, IL18, KITLG, TLR9, FKBP2, and HDAC4 as hub genes for POAG and GM regulation. Immune response modulated by macrophages plays an important role in POAG and may be potential targets for future predictive, preventive, and personalized diagnosis and treatment. Supplementary Information The online version contains supplementary material available at 10.1007/s13167-023-00336-2.
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Affiliation(s)
- Si Chen
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Nan Wang
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Siqi Xiong
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan China
| | - Xiaobo Xia
- Eye Center of Xiangya Hospital, Central South University, Changsha, 410008 Hunan China
- Hunan Key Laboratory of Ophthalmology, Changsha, Hunan China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan China
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Wang X, Wang M, Liu H, Mercieca K, Prinz J, Feng Y, Prokosch V. The Association between Vascular Abnormalities and Glaucoma-What Comes First? Int J Mol Sci 2023; 24:13211. [PMID: 37686017 PMCID: PMC10487550 DOI: 10.3390/ijms241713211] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023] Open
Abstract
Glaucoma is a leading cause of irreversible blindness worldwide. While intraocular pressure (IOP) presents a major risk factor, the underlying pathophysiology still remains largely unclear. The correlation between vascular abnormalities and glaucoma has been deliberated for decades. Evidence for a role played by vascular factors in the pathogenesis of glaucomatous neurodegeneration has already been postulated. In addition, the fact that glaucoma causes both structural and functional changes to retinal blood vessels has been described. This review aims to investigate the published evidence concerning the relationship between vascular abnormalities and glaucoma, and to provide an overview of the "chicken or egg" dilemma in glaucoma. In this study, several biomarkers of glaucoma progression from a vascular perspective, including endothelin-1 (ET-1), nitric oxide, vascular endothelial growth factor (VEGF), and matrix metalloproteinases (MMPs), were identified and subsequently assessed for their potential as pharmacological intervention targets.
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Affiliation(s)
- Xiaosha Wang
- Department of Ophthalmology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; (X.W.); (M.W.); (H.L.); (J.P.); (Y.F.)
| | - Maoren Wang
- Department of Ophthalmology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; (X.W.); (M.W.); (H.L.); (J.P.); (Y.F.)
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
- Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Hanhan Liu
- Department of Ophthalmology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; (X.W.); (M.W.); (H.L.); (J.P.); (Y.F.)
| | - Karl Mercieca
- Glaucoma Section, University Hospital Eye Clinic, 53127 Bonn, Germany;
- Faculty of Biology, Medicine and Health, School of Health Sciences, University of Manchester, Manchester M13 9WH, UK
| | - Julia Prinz
- Department of Ophthalmology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; (X.W.); (M.W.); (H.L.); (J.P.); (Y.F.)
- Department of Ophthalmology, RWTH Aachen University, 52074 Aachen, Germany
| | - Yuan Feng
- Department of Ophthalmology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; (X.W.); (M.W.); (H.L.); (J.P.); (Y.F.)
| | - Verena Prokosch
- Department of Ophthalmology, University of Cologne, Kerpener Str. 62, 50937 Cologne, Germany; (X.W.); (M.W.); (H.L.); (J.P.); (Y.F.)
- Department of Ophthalmology, University Medical Center, Johannes Gutenberg University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
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Kim MH, Lim SH. Matrix Metalloproteinases and Glaucoma. Biomolecules 2022; 12:biom12101368. [PMID: 36291577 PMCID: PMC9599265 DOI: 10.3390/biom12101368] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 09/20/2022] [Accepted: 09/22/2022] [Indexed: 11/19/2022] Open
Abstract
Matrix metalloproteinases (MMPs) are enzymes that decompose extracellular matrix (ECM) proteins. MMPs are thought to play important roles in cellular processes, such as cell proliferation, differentiation, angiogenesis, migration, apoptosis, and host defense. MMPs are distributed in almost all intraocular tissues and are involved in physiological and pathological mechanisms of the eye. MMPs are also associated with glaucoma, a progressive neurodegenerative disease of the eyes. MMP activity affects intraocular pressure control and apoptosis of retinal ganglion cells, which are the pathological mechanisms of glaucoma. It also affects the risk of glaucoma development based on genetic pleomorphism. In addition, MMPs may affect the treatment outcomes of glaucoma, including the success rate of surgical treatment and side effects on the ocular surface due to glaucoma medications. This review discusses the various relationships between MMP and glaucoma.
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Affiliation(s)
- Moo Hyun Kim
- Department of Ophthalmology, Daegu Premier Eye Center, Suseong-ro 197, Suseong-Gu, Daegu 42153, Korea
| | - Su-Ho Lim
- Department of Ophthalmology, Daegu Veterans Health Service Medical Center, 60 Wolgok-Ro, Dalseo-Gu, Daegu 42835, Korea
- Correspondence: ; Tel.: +82-53-630-7572
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7
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Coulon SJ, Schuman JS, Du Y, Bahrani Fard MR, Ethier CR, Stamer WD. A novel glaucoma approach: Stem cell regeneration of the trabecular meshwork. Prog Retin Eye Res 2022; 90:101063. [PMID: 35398015 PMCID: PMC9464663 DOI: 10.1016/j.preteyeres.2022.101063] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 03/20/2022] [Accepted: 03/24/2022] [Indexed: 12/13/2022]
Abstract
Glaucoma is the leading cause of global irreversible blindness, necessitating research for new, more efficacious treatment options than currently exist. Trabecular meshwork (TM) cells play an important role in the maintenance and function of the aqueous outflow pathway, and studies have found that there is decreased cellularity of the TM in glaucoma. Regeneration of the TM with stem cells has been proposed as a novel therapeutic option by several reports over the last few decades. Stem cells have the capacity for self-renewal and the potential to differentiate into adult functional cells. Several types of stem cells have been investigated in ocular regenerative medicine: tissue specific stem cells, embryonic stem cells, induced pluripotent stem cells, and adult mesenchymal stem cells. These cells have been used in various glaucoma animal models and ex vivo models and have shown success in IOP homeostasis and TM cellularity restoration. They have also demonstrated stability without serious side effects for a significant period of time. Based on current knowledge of TM pathology in glaucoma and existing literature regarding stem cell regeneration of this tissue, we propose a human clinical study as the next step in understanding this potentially revolutionary treatment paradigm. The ability to protect and replace TM cells in glaucomatous eyes could change the field forever.
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Affiliation(s)
- Sara J Coulon
- Department of Ophthalmology, NYU Grossman School of Medicine, NYU Langone Health, New York University, New York, NY, USA
| | - Joel S Schuman
- Department of Ophthalmology, NYU Grossman School of Medicine, NYU Langone Health, New York University, New York, NY, USA; Center for Neural Science, College of Arts and Science, New York University, New York, NY, USA; Departments of Biomedical Engineering and Electrical and Computer Engineering, New York University Tandon School of Engineering, Brooklyn, NY, USA; Department of Physiology and Neuroscience, NYU Grossman School of Medicine, NYU Langone Health, New York University, New York, NY, USA.
| | - Yiqin Du
- Department of Ophthalmology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Mohammad Reza Bahrani Fard
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University School of Medicine, Atlanta, GA, USA
| | - C Ross Ethier
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University School of Medicine, Atlanta, GA, USA
| | - W Daniel Stamer
- Departments of Ophthalmology and Biomedical Engineering, Duke University, Durham, NC, USA
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Sharif NA. Therapeutic Drugs and Devices for Tackling Ocular Hypertension and Glaucoma, and Need for Neuroprotection and Cytoprotective Therapies. Front Pharmacol 2021; 12:729249. [PMID: 34603044 PMCID: PMC8484316 DOI: 10.3389/fphar.2021.729249] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 08/18/2021] [Indexed: 12/11/2022] Open
Abstract
Damage to the optic nerve and the death of associated retinal ganglion cells (RGCs) by elevated intraocular pressure (IOP), also known as glaucoma, is responsible for visual impairment and blindness in millions of people worldwide. The ocular hypertension (OHT) and the deleterious mechanical forces it exerts at the back of the eye, at the level of the optic nerve head/optic disc and lamina cribosa, is the only modifiable risk factor associated with glaucoma that can be treated. The elevated IOP occurs due to the inability of accumulated aqueous humor (AQH) to egress from the anterior chamber of the eye due to occlusion of the major outflow pathway, the trabecular meshwork (TM) and Schlemm’s canal (SC). Several different classes of pharmaceutical agents, surgical techniques and implantable devices have been developed to lower and control IOP. First-line drugs to promote AQH outflow via the uveoscleral outflow pathway include FP-receptor prostaglandin (PG) agonists (e.g., latanoprost, travoprost and tafluprost) and a novel non-PG EP2-receptor agonist (omidenepag isopropyl, Eybelis®). TM/SC outflow enhancing drugs are also effective ocular hypotensive agents (e.g., rho kinase inhibitors like ripasudil and netarsudil; and latanoprostene bunod, a conjugate of a nitric oxide donor and latanoprost). One of the most effective anterior chamber AQH microshunt devices is the Preserflo® microshunt which can lower IOP down to 10–13 mmHg. Other IOP-lowering drugs and devices on the horizon will be also discussed. Additionally, since elevated IOP is only one of many risk factors for development of glaucomatous optic neuropathy, a treatise of the role of inflammatory neurodegeneration of the optic nerve and retinal ganglion cells and appropriate neuroprotective strategies to mitigate this disease will also be reviewed and discussed.
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Affiliation(s)
- Najam A Sharif
- Global Alliances and External Research, Ophthalmology Innovation Center, Santen Inc., Emeryville, CA, United States
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Snider EJ, Boice EN, Gross B, Butler JJ, Zamora DO. Characterization of an anterior segment organ culture model for open globe injuries. Sci Rep 2021; 11:8546. [PMID: 33879808 PMCID: PMC8058041 DOI: 10.1038/s41598-021-87910-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 03/30/2021] [Indexed: 12/05/2022] Open
Abstract
Open-globe injuries have poor visual outcomes and have increased in frequency. The current standard of care is inadequate, and a therapeutic is needed to stabilize the injury until an ophthalmic specialist is reached. Unfortunately, current models or test platforms for open-globe injuries are insufficient. Here, we develop and characterize an open-globe injury model using an anterior segment organ-culture platform that allows therapeutic assessment for up to 72 h post-injury. Anterior segments maintained in organ culture were kept at physiological intraocular pressure throughout, and puncture injuries were created using a novel pneumatic-powered system. This system can create high-speed, military-relevant injuries up to 4.5 mm in diameter through the cornea. From intraocular pressure readings, we confirmed a loss of pressure across the 72 h after open-globe injury. Proof-of-concept studies with a Dermabond tissue adhesive were performed to show how this model system could track therapeutic performance for 72 h. Overall, the organ-culture platform was found to be a suitable next step towards modeling open-globe injuries and assessing wound closure over the critical 72 h post-injury. With improved models such as this, novel biomaterial therapeutics development can be accelerated, improving care, and, thus, improving the prognosis for the patients.
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Affiliation(s)
- Eric J Snider
- Department of Sensory Trauma, United States Army Institute of Surgical Research, Fort Sam Houston, TX, 78234, USA.
| | - Emily N Boice
- Department of Sensory Trauma, United States Army Institute of Surgical Research, Fort Sam Houston, TX, 78234, USA
| | - Brandon Gross
- Department of Sensory Trauma, United States Army Institute of Surgical Research, Fort Sam Houston, TX, 78234, USA
| | - Jacinque J Butler
- Department of Sensory Trauma, United States Army Institute of Surgical Research, Fort Sam Houston, TX, 78234, USA
| | - David O Zamora
- Department of Sensory Trauma, United States Army Institute of Surgical Research, Fort Sam Houston, TX, 78234, USA
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