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Promelle V, Lyons CJ. Outcomes of a Second Ahmed Glaucoma Implant With Mitomycin-C in Pediatric Glaucoma After Initial Valve Failure. J Glaucoma 2024; 33:763-768. [PMID: 38722198 DOI: 10.1097/ijg.0000000000002422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 05/02/2024] [Indexed: 09/20/2024]
Abstract
PRCIS After the failure of a glaucoma drainage device in children, implantation of a second Ahmed glaucoma valve with mitomycin-C allows a significant reduction of intraocular pressure and number of medications with good medium-term and long-term survival. INTRODUCTION The effectiveness of glaucoma drainage devices (GDD) is limited in time. There is little literature regarding the optimal management strategy after failure of a GDD in pediatric glaucoma. PURPOSE To report the outcomes of Ahmed glaucoma valve implantation (AGV) with mitomycin-C (MMC) after failure of a GDD in children. METHODS Retrospective chart review of patients with a history of at least 1 GDD receiving an AGV implantation with MMC between 2000 and 2019. We defined complete success as an IOP of 5-21 mm Hg without glaucoma medication and qualified success as a final IOP of 5-21 mm Hg with one or more glaucoma medication, without loss of vision. RESULTS Twenty-one patients (22 eyes) met the inclusion criteria. The intraocular pressure and number of medications were significantly reduced. The probability of complete success was 47% [95% CI: 29%-75%] at 2 years and 34% [95% CI: 18%-65%] at 4 years. The probability of qualified success was 74% [95% CI: 56%-97%] at 2 years, and 54% [95% CI: 34%-84%] at 5 years. Failure happened in 10 eyes after a mean time of 4.3 years ±3.6 (6 mo to 15 y), 5 of which (23%) for severe complications or loss of vision. DISCUSSION This study of implantation of a second valve with MMC reports a significant decrease in IOP and medications with medium-term and long-term success rates close to those reported for first valve implantation, although with a high risk of complications.
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Affiliation(s)
- Veronique Promelle
- Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada
- Department of Surgery, Division of Ophthalmology, IWK Health Centre, Dalhousie University, Halifax, NS, Canada
| | - Christopher J Lyons
- Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, BC, Canada
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Morita S, Hamanaka T, Sakurai T, Watanabe S, Sakanishi Y, Ishida N, Ebihara N. The effects of the first versus second glaucoma drainage implant surgery in patients with primary open-angle glaucoma. BMC Ophthalmol 2023; 23:509. [PMID: 38097974 PMCID: PMC10720138 DOI: 10.1186/s12886-023-03247-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND To investigate the outcome of non-valved glaucoma drainage implant surgery (GDIS) in primary open-angle glaucoma (POAG) patients divided in the first GDI group (patients who underwent the first GDIS) and the second GDI group (patients who underwent the second GDIS because of the failed first GDIS). METHODS Intraocular pressure (IOP), visual acuity (VA), visual field defect (VFD), medication score (MS), survival rate of GDIS, complications, and patient background was retrospectively analyzed. Two success criteria were set: Criteria (1) IOP reduction ≥ 20% and 5 < IOP ≤ 21, Criteria (2) IOP reduction ≥ 20% and 5 < IOP ≤ 14. RESULTS There were 136 eyes of 109 patients in the first GDI group and 32 eyes of 27 patients in the second GDI group. In the first GDI group and II, mean preoperative IOP was 26.7 ± 6.7 mmHg and 23.7 ± 3.5 mmHg, respectively (P = 0.09). No statistically significant difference in postoperative IOP reduction was found between the two groups (P = 0.39). At 5-years postoperative, the Criteria 1 (Criteria 2) survival rate in the first GDI group and the second GDI group was 60.4% (31.7%) and 61.2% (25.6%), respectively (Criteria 1: hazard ratio [HR]: 0.64, 95% confidence interval [CI]: 0.30-1.35 [P = 0.24]; Criteria 2: HR: 0.81, 95% CI: 0.46-1.44, P = 0.48). No significant difference in VA, VFD change, MS, or complications was observed. Young patient age was the only significant factor for failure in the first GDI group (odds ratio: 0.95, 95% confidence interval: 0.91-1.00, P = 0.03). CONCLUSION The second GDIS may be as effective as the first GDIS for IOP reduction in POAG patients, however, there is a high risk of failure in young-age patients and the surgery may be ineffective in eyes requiring Criteria 2.
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Affiliation(s)
- Shuu Morita
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Teruhiko Hamanaka
- Department of Ophthalmology, Japanese Red Cross Medical Center, 4-1-22, Hiroo, Shibuya-ku, Tokyo, 156-8935, Japan.
| | - Tetsuro Sakurai
- School of General and Management Studies, Suwa University of Science, Nagano, Japan
| | - Satoshi Watanabe
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Yoshihito Sakanishi
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Chiba, Japan
| | | | - Nobuyuki Ebihara
- Department of Ophthalmology, Juntendo University Urayasu Hospital, Chiba, Japan
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Lee S, Kim HA, Seo K, Kang S. Sequential Ahmed valve implantation after primary implant surgery in two dogs. Vet Ophthalmol 2023. [PMID: 37985376 DOI: 10.1111/vop.13158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 10/18/2023] [Accepted: 10/23/2023] [Indexed: 11/22/2023]
Abstract
OBJECTIVE To report the outcomes of sequential Ahmed valve implantation in two dogs with uncontrolled intraocular pressure (IOP) after primary Ahmed valve implantation. ANIMALS STUDIED A 6-year-old castrated male American Cocker Spaniel (case 1) and a 12-year-old spayed female mixed-breed dog (case 2) presented with glaucoma management in the left eyes of both dogs. PROCEDURES Primary Ahmed valve implantation was performed because of uncontrolled IOP despite antiglaucoma medications used in both dogs. The IOP was maintained within the normal range for 14 and 2 months after surgery in cases 1 and 2, respectively. In both cases, the IOP gradually increased, which was assumed to be caused by bleb fibrosis. In particular, in case 2, one bleb revision surgery was performed during that period, but it was unsuccessful. Therefore, we decided to perform sequential implantation surgery. RESULTS In case 1, hyphema occurred the day after sequential surgery and resolved with anti-inflammatory treatment. In case 2, it occurred immediately after the surgery and resolved after surgical blood clot removal. IOP remained below 15 mmHg, and menace response was positive until 40 and 23 months after the sequential surgery in cases 1 and 2, respectively. As a long-term complication, cataracts occurred at 17 months in case 1 and 10 months in case 2. CONCLUSIONS AND CLINICAL RELEVANCE Sequential implantation surgery in the same eye could be an effective alternative for long-term IOP management and vision maintenance. A better understanding of complications and appropriate postoperative management is essential for better outcomes.
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Affiliation(s)
- Songhui Lee
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | | | - Kangmoon Seo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Seonmi Kang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
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Reimplantation of a drainage valve device in refractory glaucoma. A clinical case. КЛИНИЧЕСКАЯ ПРАКТИКА 2022. [DOI: 10.17816/clinpract107179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Background: Implantation of various drainage devices is one of the treatments for refractory glaucoma, resistant to traditional surgical methods. The most commonly used glaucoma drainage device for refractory glaucoma is the Ahmed glaucoma valve. However, the long-term success rate of the surgery may be limited because of the development of complications during the late postoperative period. The complications do not allow the control of the achieved intraocular pressure (IOP) level. In such cases, a repeated implantation of the Ahmed valve may be one of the options for the surgical treatment. Clinical case description: Second Ahmed valves were implanted to two patients with refractory repeatedly operated glaucoma at the Department of surgical glaucoma treatment of the S. Fyodorov Eye Microsurgery Federal State Institution in Moscow. Previously, both patients had the Ahmed valves installed at their places of residence. During the postoperative period, one patient was found to have an encapsulated cyst around the drainage body, and later the revision of the operation area was performed. As a result of the repeated Ahmed valve implantation, the IOP compensation was achieved 9 months after the surgery. Conclusion: A repeated implantation of the Ahmed valve may be an option for the surgical treatment, if the first implant failed to control the IOP, in order to compensate the IOP and preserve the visual functions in patients with refractory repeatedly operated glaucoma.
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Yousef YA, Mohammad M, AlNawaiseh I, AlJabari R, Toro MD, Gharaibeh A, Rejdak R, Nowomiejska K, Zweifel S, Avitabile T, Rejdak M, Nazzal R. Ultrasound Biomicroscopy Measurements of the Normal Thickness for the Ciliary Body and the Iris in a Middle East Population. Clin Ophthalmol 2022; 16:101-109. [PMID: 35046635 PMCID: PMC8760099 DOI: 10.2147/opth.s297977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 11/10/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose Ciliary body (CB) and iris thicknesses may change with certain eye diseases as well as between different populations. Here, we report Ultrasound Biomicroscopy Measurements (UBM) of the normal thickness for the CB and the iris from a homogenous population in the Middle East. Patients and Methods Sonomed 35-MHz (SONOMED, INC. New York, USA) images were obtained at 4 radial meridians, and the thickness was measured at 3 locations along the radial length of the iris and at the thickest part of the CB. Parameters included mean thickness, median thickness, range, and standard deviation. Results Of 46 adult patients, 83 normal eyes were included in this analysis. The overall mean, median iris thicknesses at the iris root, midway along the radial length of the iris, and at the juxtapupillary margin in mm were 0.42, 0.41 ± 0.08, 0.52, 0.51± 0.08, and 0.72, 0.71± 0.1, respectively. The overall mean, median thicknesses of the CB and CB + ciliary processes in mm were 0.72, 0.71 ± 0.1, and 1.42, 1.37 ± 0.2 respectively. Gender, age, side, and height had no impact on iris and/or CB thickness (p>0.05). However, the iris thickness was significantly thicker in the superior quadrant than inferiorly, and in the nasal quadrant than the temporal quadrant (p=0.04), and the CB thickness and the CB + ciliary processes thickness were significantly thicker in the superior quadrant than inferiorly (P = 0.04 and 0.02 consecutively). Conclusion We measured in this study the normal thickness of the CB and the iris in normal eyes from homogenous population in the Middle East using ultrasound biomicroscopy. Our findings are essential for the ophthalmic community worldwide and in the Middle East region and can be used as a normative thickness data for the iris and CB in healthy eyes.
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Affiliation(s)
- Yacoub A Yousef
- Department of Surgery (Ophthalmology), King Hussein Cancer Centre, Amman, Jordan
| | - Mona Mohammad
- Department of Surgery (Ophthalmology), King Hussein Cancer Centre, Amman, Jordan
| | - Ibrahim AlNawaiseh
- Department of Surgery (Ophthalmology), King Hussein Cancer Centre, Amman, Jordan
| | - Reem AlJabari
- Department of Surgery (Ophthalmology), King Hussein Cancer Centre, Amman, Jordan
| | - Mario Damiano Toro
- Faculty of Medical Sciences, Collegium Medicum, Cardinal Stefan Wyszyński University, Warsaw, Poland.,Department of Ophthalmology, University of Zürich, Zürich, Switzerland
| | | | - Robert Rejdak
- Department of General Ophthalmology, Medical University of Lublin, Lublin, Poland
| | | | - Sandrine Zweifel
- Department of Ophthalmology, University of Zürich, Zürich, Switzerland
| | | | - Magdalena Rejdak
- Department of Ophthalmology, University of Catania, Catania, Italy
| | - Rashed Nazzal
- Faculty of Medical Sciences, Collegium Medicum, Cardinal Stefan Wyszyński University, Warsaw, Poland
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Testing the eligibility of glaucoma patients for potential gene therapy among a clinic population. Int Ophthalmol 2022; 42:785-797. [PMID: 34989952 DOI: 10.1007/s10792-021-02044-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 09/22/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE Glaucoma patients who deteriorate despite standard treatment may benefit from novel gene therapies. Key inclusion criteria for a glaucoma gene therapy trial were devised. A retrospective chart review in a glaucoma clinic population was conducted. Feasibility of gene therapy inclusion criteria and factors associated with progression and fast progression < -1 decibels/year (dB/y) were evaluated. METHODS Three hundred and seventy-four primary open-angle glaucoma patients all of whom had performed at least five Swedish interactive threshold algorithm standard visual fields within a 58-month period. Two definitions were applied to characterize visual field progression rate using Guided Progression Analysis for an individual patient based on A, the eye with the greatest visual field loss, or B, the eye with the most rapid progression rate. RESULTS Mean rate of visual field progression was -0.50 dB/y (Definition A) and -0.64 dB/y (Definition B). 19.0% (A) and 21.9% (B) of eyes, 71 (A) and 82 (B) eyes, were 'fast progressors' (< -1 dB/y). 37 (A) and 43 (B) eyes met the putative gene therapy inclusion criteria (≥ 50 years; mean deviation ≤ -4 to ≥ -12 or ≤ -20 dB, progression rate between -1 and -4 dB/y). Beta blockers (Odds ratio (OR) with 95% Confidence Intervals (CI): 2.84 (1.39-5.80); p = 0.004) (A), (OR (95%CI): 2.48 (1.30-4.75); p = 0.006) (B) and alpha agonists (OR (95%CI): 2.18 (1.14-4.17); p = 0.02) (A), (OR (95%CI) 2.00 (1.08-3.73); p = 0.028) (B) were significantly associated with fast progression. CONCLUSION A substantial proportion (10%) of patients in this clinic population would meet recommended gene therapy inclusion criteria.
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Daneshvar R, Karimi F, Golami F, Mosavi SA, Khorrami-Nejad M. Long-term comparison of the outcomes of Ahmed Glaucoma Valve surgery between glaucoma surgeons and cornea trained surgeons. Int Ophthalmol 2021; 42:1183-1191. [PMID: 34725769 DOI: 10.1007/s10792-021-02103-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 10/21/2021] [Indexed: 12/01/2022]
Abstract
PURPOSE To compare the long-term outcomes obtained by glaucoma surgeons versus cornea trained surgeons performing Ahmed glaucoma valve (AGV) surgery. METHODS Of the total 376 patients (3 month to 83 year) conducted in this retrospective study, 130 patients with refractory glaucoma were evaluated who had been followed up for at least six months during ten years period. The primary outcome measure was the surgical success of AGV surgery that was categorized in two groups: (A5 ≤ IOP ≤ 21 mmHg and at least 20% reduction in IOP without any glaucoma medications (complete success) and reduction by using one or more glaucoma medications (qualified success) (B) similar to previous criteria but the cutoff for higher IOP at 16 mmHg without vision loss and the need for medication or re-surgery. RESULTS Mean age of the patients was 32.99 ± 24.20 years in the glaucoma surgeon group and 25.18 ± 24.33 years in the cornea trained surgeons group (P = 0.07). The overall success of both methods at the end of four years were 66.7% and 41.7% for the group of glaucoma surgeons and cornea trained surgeons, respectively (p = 0.661). The cumulative success according to criterion A and B was 66.7% in the glaucoma surgeon group and 47.1% in the others surgeon group (P = 0.661). Repeated glaucoma surgery was required in 33.3% and 52.9% of the patients in the glaucoma surgeon and cornea trained surgeons groups, respectively (P = 0.661). Although there was a significant difference for IOP among various follow-up periods (p = 0.004), this difference was not significant between the two groups (p = 0.374).Visual Acuity did not have a signifiant difference between various follow-up periods and surgeons groups (p = 0.419 and P = 0. 690, respectively). CONCLUSION There were comparable outcomes with regard to complications and success rates between glaucoma surgeons and cornea trained surgeons performing AGV surgery.
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Affiliation(s)
- Ramin Daneshvar
- Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Ophthalmology, University of Florida, Florida, USA
| | - Farshid Karimi
- Department of Optometry, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Fatemeh Golami
- Eye Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Vawda N, Munsamy A. The Effect of Ocular Perfusion Pressure on Retinal Thickness in Young People with Presumed Systemic Hypotension. Vision (Basel) 2021; 5:36. [PMID: 34287377 PMCID: PMC8293322 DOI: 10.3390/vision5030036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/11/2021] [Accepted: 06/23/2021] [Indexed: 11/17/2022] Open
Abstract
Low ocular perfusion pressure (OPP) may increase the risk of optic neuropathy. This study investigated the effects of OPP on the ganglion cell complex (GCC) and optic nerve head-retinal nerve fibre layer (ONH-RNFL) thickness in presumed systemic hypotensives (PSH). Fifteen participants with PSH and 14 controls underwent automated sphygmomanometry and Icare tonometry to calculate OPP: mean OPP (MOPP), systolic OPP (SOPP), and diastolic OPP (DOPP). ONH-RNFL and macula GCC thickness were evaluated using the Optovue iVue optical coherence tomographer. Statistical analysis comprised independent t-tests, the Mann-Whitney U test and binary logistic regression analysis. There was no significant difference when comparing ONH-RNFL and macula GCC thickness between both groups. Increased MOPP (OR = 0.51; 95% CI: 0.27-0.97; p = 0.039) and SOPP (OR = 0.79; 95% CI: 0.64-0.98; p = 0.035) were significantly associated with a decreased risk of reductions in GCC total thickness. Increased SOPP (OR = 0.11; 95% CI: 0.01-0.89; p = 0.027) was significantly associated with a decreased risk of reductions in the average ONH-RNFL thickness. The study found no significant retinal thickness changes in PSH's, in comparison to the controls. The study established that, by increasing MOPP and SOPP, there was a decreased risk of reductions in the total GCC thickness and average ONH-RNFL thickness. Higher SOPP may decrease the possibility of retinal thinning of the GCC and ONH-RNFL. However, higher MOPP may decrease the odds of thinning of the GCC before ONH-RNFL changes.
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Affiliation(s)
- Naazia Vawda
- Alvin Jeffrey Munsamy, Room E5-642, Discipline of Optometry, 6th Floor, E Block, Westville Campus, University Road, Westville, Durban 3629, South Africa;
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Zhang J, Wu S, Jin ZB, Wang N. Stem Cell-Based Regeneration and Restoration for Retinal Ganglion Cell: Recent Advancements and Current Challenges. Biomolecules 2021; 11:biom11070987. [PMID: 34356611 PMCID: PMC8301853 DOI: 10.3390/biom11070987] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/29/2021] [Accepted: 07/01/2021] [Indexed: 12/25/2022] Open
Abstract
Glaucoma is a group of irreversible blinding eye diseases characterized by the progressive loss of retinal ganglion cells (RGCs) and their axons. Currently, there is no effective method to fundamentally resolve the issue of RGC degeneration. Recent advances have revealed that visual function recovery could be achieved with stem cell-based therapy by replacing damaged RGCs with cell transplantation, providing nutritional factors for damaged RGCs, and supplying healthy mitochondria and other cellular components to exert neuroprotective effects and mediate transdifferentiation of autologous retinal stem cells to accomplish endogenous regeneration of RGC. This article reviews the recent research progress in the above-mentioned fields, including the breakthroughs in the fields of in vivo transdifferentiation of retinal endogenous stem cells and reversal of the RGC aging phenotype, and discusses the obstacles in the clinical translation of the stem cell therapy.
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Affiliation(s)
- Jingxue Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing 100730, China; (J.Z.); (S.W.)
- Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing 100069, China
| | - Shen Wu
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing 100730, China; (J.Z.); (S.W.)
- Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing 100069, China
| | - Zi-Bing Jin
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing 100730, China; (J.Z.); (S.W.)
- Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing 100069, China
- Correspondence: (Z.-B.J.); (N.W.)
| | - Ningli Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing 100730, China; (J.Z.); (S.W.)
- Beijing Institute of Brain Disorders, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing 100069, China
- Correspondence: (Z.-B.J.); (N.W.)
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Influence of Trace Elements on Neurodegenerative Diseases of The Eye-The Glaucoma Model. Int J Mol Sci 2021; 22:ijms22094323. [PMID: 33919241 PMCID: PMC8122456 DOI: 10.3390/ijms22094323] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/16/2021] [Accepted: 04/18/2021] [Indexed: 02/07/2023] Open
Abstract
Glaucoma is a heterogeneous group of chronic neurodegenerative disorders characterized by a relatively selective, progressive damage to the retinal ganglion cells (RGCs) and their axons, which leads to axon loss and visual field alterations. To date, many studies have shown the role of various elements, mainly metals, in maintaining the balance of prooxidative and antioxidative processes, regulation of fluid and ion flow through cell membranes of the ocular tissues. Based on the earlier and current research results, their relationship with the development and progression of glaucoma seems obvious and is increasingly appreciated. In this review, we aimed to summarize the current evidence on the role of trace elements in the pathogenesis and prevention of glaucomatous diseases. Special attention is also paid to the genetic background associated with glaucoma-related abnormalities of physiological processes that regulate or involve the ions of elements considered as trace elements necessary for the functioning of the cells.
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Fiedorowicz M, Choragiewicz T, Turski WA, Kocki T, Nowakowska D, Wertejuk K, Kamińska A, Avitabile T, Wełniak-Kaminska M, Grieb P, Zweifel S, Rejdak R, Toro MD. Tryptophan Pathway Abnormalities in a Murine Model of Hereditary Glaucoma. Int J Mol Sci 2021; 22:1039. [PMID: 33494373 PMCID: PMC7865582 DOI: 10.3390/ijms22031039] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND It has been shown that a possible pathogenetic mechanism of neurodegeneration in the mouse model of glaucoma (DBA/2J) may be an alteration of kynurenic acid (KYNA) in the retina. This study aimed to verify the hypothesis that alterations of tryptophan (TRP) metabolism in DBA/2J mice is not limited to the retina. METHODS Samples of the retinal tissue and serum were collected from DBA/2J mice (6 and 10 months old) and control C57Bl/6 mice of the same age. The concentration of TRP, KYNA, kynurenine (KYN), and 3-hydroxykynurenine (3OH-K) was measured by HPLC. The activity of indoleamine 2,3-dioxygenase (IDO) was also determined as a KYN/TRP ratio. RESULTS TRP, KYNA, L-KYN, and 3OH-K concentration were significantly lower in the retinas of DBA/2J mice than in C57Bl/6 mice. 3OH-K concentration was higher in older mice in both strains. Serum TRP, L-KYN, and KYNA concentrations were lower in DBA/2J than in age-matched controls. However, serum IDO activity did not differ significantly between compared groups and strains. CONCLUSIONS Alterations of the TRP pathway seem not to be limited to the retina in the murine model of hereditary glaucoma.
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Affiliation(s)
- Michal Fiedorowicz
- Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland; (M.F.); (M.W.-K.); (P.G.)
| | - Tomasz Choragiewicz
- Department of General Ophthalmology, Medical University of Lublin, 20-079 Lublin, Poland; (T.C.); (D.N.); (K.W.); (R.R.)
| | - Waldemar A. Turski
- Department of Experimental and Clinical Pharmacology, Medical University of Lublin, 20-079 Lublin, Poland; (W.A.T.); (T.K.)
| | - Tomasz Kocki
- Department of Experimental and Clinical Pharmacology, Medical University of Lublin, 20-079 Lublin, Poland; (W.A.T.); (T.K.)
| | - Dominika Nowakowska
- Department of General Ophthalmology, Medical University of Lublin, 20-079 Lublin, Poland; (T.C.); (D.N.); (K.W.); (R.R.)
| | - Kamila Wertejuk
- Department of General Ophthalmology, Medical University of Lublin, 20-079 Lublin, Poland; (T.C.); (D.N.); (K.W.); (R.R.)
| | - Agnieszka Kamińska
- Faculty of Medical Sciences, Collegium Medicum, Cardinal Stefan Wyszyński University, 01-815 Warsaw, Poland;
| | - Teresio Avitabile
- Department of Ophthalmology, University of Catania, 95123 Catania, Italy;
| | - Marlena Wełniak-Kaminska
- Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland; (M.F.); (M.W.-K.); (P.G.)
| | - Pawel Grieb
- Mossakowski Medical Research Centre, Polish Academy of Sciences, 02-106 Warsaw, Poland; (M.F.); (M.W.-K.); (P.G.)
| | - Sandrine Zweifel
- Department of Ophthalmology, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland;
| | - Robert Rejdak
- Department of General Ophthalmology, Medical University of Lublin, 20-079 Lublin, Poland; (T.C.); (D.N.); (K.W.); (R.R.)
| | - Mario Damiano Toro
- Department of General Ophthalmology, Medical University of Lublin, 20-079 Lublin, Poland; (T.C.); (D.N.); (K.W.); (R.R.)
- Faculty of Medical Sciences, Collegium Medicum, Cardinal Stefan Wyszyński University, 01-815 Warsaw, Poland;
- Department of Ophthalmology, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland;
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