Prognosticating Retinal Dystrophies in the Postgenomic Era Inheritance Patterns of Retinal Diseases
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Masqueraders of Age-Related Macular Degeneration
COVER STORY Masqueraders of Age-related Macular Degeneration A number of inherited retinal diseases phenocopy AMD. BY RONY GELMAN, MD, MS; AND STEPHEN H. TSANG, MD, PHD ge-related macular degeneration (AMD) is a leading cause of central visual loss among the elderly population in the developed world. The Currently, there are no published A non-neovascular form is characterized by mac- guidelines to prognosticate ular drusen and other abnormalities of the retinal pigment epithelium (RPE) such as geographic atrophy (GA) and Stargardt macular degeneration. hyperpigmented areas in the macula. The neovascular form is heralded by choroidal neovascularization (CNV), with subsequent development of disciform scarring. ABCA4 defect heterozygote carrier may be as high as This article reviews the pathologic and diagnostic char- one in 20.11,12 An estimated 600 disease-causing muta- acteristics of inherited diseases that may masquerade as tions in the ABCA4 gene exist, of which the three most AMD. The review is organized by the following patterns common mutations account for less than 10% of the of inheritance: autosomal recessive (Stargardt disease and disease phenotypes.13 cone dystrophy); autosomal dominant (cone dystrophy, The underlying pathology of disease in STGD involves adult vitelliform dystrophy, pattern dystrophy, North accumulation of lipofuscin in the RPE through a process Carolina macular dystrophy, Doyne honeycomb dystro- of disc shedding and phagocytosis.14,15 Lipofuscin is toxic phy, and Sorsby macular dystrophy); X-linked (X-linked to the RPE; furthermore, A2E, a component of lipofuscin, retinoschisis); and mitochondrial (maternally inherited causes inhibition of 11-cis retinal regeneration16 and diabetes and deafness). complement activation. -
Genetic Defects of CHM and Visual Acuity Outcome in 24 Choroideremia
www.nature.com/scientificreports OPEN Genetic defects of CHM and visual acuity outcome in 24 choroideremia patients from 16 Japanese families Takaaki Hayashi1,2*, Shuhei Kameya3, Kei Mizobuchi2, Daiki Kubota3, Sachiko Kikuchi3, Kazutoshi Yoshitake4, Atsushi Mizota5, Akira Murakami6, Takeshi Iwata4 & Tadashi Nakano2 Choroideremia (CHM) is an incurable progressive chorioretinal dystrophy. Little is known about the natural disease course of visual acuity in the Japanese population. We aimed to investigate the genetic spectrum of the CHM gene and visual acuity outcomes in 24 CHM patients from 16 Japanese families. We measured decimal best-corrected visual acuity (BCVA) at presentation and follow-up, converted to logMAR units for statistical analysis. Sanger and/or whole-exome sequencing were performed to identify pathogenic CHM variants/deletions. The median age at presentation was 37.0 years (range, 5–76 years). The mean follow-up interval was 8.2 years. BCVA of the better-seeing eye at presentation was signifcantly worsened with increasing age (r = 0.515, p < 0.01), with a high rate of BCVA decline in patients > 40 years old. A Kaplan–Meier survival curve suggested that a BCVA of Snellen equivalent 20/40 at follow-up remains until the ffties. Fourteen pathogenic variants, 6 of which were novel [c.49 + 5G > A, c.116 + 5G > A, p.(Gly176Glu, Glu177Ter), p.Tyr531Ter, an exon 2 deletion, and a 5.0-Mb deletion], were identifed in 15 families. No variant was found in one family only. Our BCVA outcome data are useful for predicting visual prognosis and determining the timing of intervention in Japanese patients with CHM variants. -
Retinitis Pigmentosa Precision Panel Overview Indications Clinical
Retinitis Pigmentosa Precision Panel Overview Retinitis Pigmentosa (RP) comprises a complex group of inherited dystrophies characterized by degeneration and dysfunction of the retina, affecting photoreceptor and pigment epithelial function. RP can be an isolated finding or be part of a syndrome that can be inherited in a dominant, recessive or X-linked pattern. This disease presents as progressive loss of night and peripheral vision, leading to a constricted visual field and markedly diminished vision. The clinical presentation of these findings is highly variable, some patients being affected during childhood while others are asymptomatic well into adulthood. There is an increase in mortality rate due to psychiatric comorbidities. The Igenomix Retinitis Pigmentosa Precision Panel can be used to make an accurate and directed diagnosis as well as a differential diagnosis of blindness ultimately leading to a better management and prognosis of the disease. It provides a comprehensive analysis of the genes involved in this disease using next-generation sequencing (NGS) to fully understand the spectrum of relevant genes involved. Indications The Igenomix Retinitis Pigmentosa Precision Panel is indicated for those patients with a clinical suspicion or diagnosis with or without the following manifestations: - Family history of RP - Night blindness - Progressive constriction of the visual field, usually peripheral - Cataracts - Sensation of sparking lights (photopsias) - Headache Clinical Utility The clinical utility of this panel is: - The genetic and molecular confirmation for an accurate clinical diagnosis of a symptomatic patient. - Early initiation of multidisciplinary treatment in the form of medical care with vitamin A and other antioxidants and surgical care for potential cataract extraction or retinal prosthesis. -
Rod-Cone Dystrophy Associated with the Gly167asp Variant in PRPH2
Rod-cone dystrophy associated with the Gly167Asp variant in PRPH2 Rola Ba-Abbad, FRCS, PhD1,2, Anthony G. Robson, PhD1,2, Becky MacPhee, BSc2, Andrew R. Webster, MD(Res), FRCOpth1,2, Michel Michaelides, MD(Res), FRCOphth 1,2 1. UCL Institute of Ophthalmology, University College London, London, UK 2. Moorfields Eye Hospital, London, UK Declaration of interest statement: the authors report no conflict of interest. Corresponding Author: Professor Michel Michaelides, MD(Res), FRCOphth UCL Institute of Ophthalmology, London, EC1V 9EL, United Kingdom Email: [email protected] Phone number: +44 (0) 20 7608 6800 Peripherin 2-associated retinopathies are phenotypically heterogenous and can present as autosomal dominant retinitis pigmentosa, cone-rod dystrophy, various forms of macular and pattern dystrophy, or recessive retinopathy1,2. We report a case of rod-cone dystrophy associated with the variant c.500G>A, p.(Gly167Asp) in PRPH2 (OMIM 179605), which was previously reported to cause autosomal dominant butterfly-shaped pigment dystrophy of the fovea in a three-generation pedigree (MIM 169150)3. A 66-year old British woman of European ancestry was referred to the inherited retinal disorders clinic with bilateral pigmentary retinopathy, and a 5-year history of nyctalopia. There were no knowingly affected family members; her late father and mother had normal vision in their sixties and eighties respectively, and the patient’s two children had no symptoms in their third decade of life. Previously, she underwent laser refractive surgery for myopia, bilateral cataract extraction and laser posterior capsulotomy. On examination, the Snellen visual acuity was 20/30 in the right eye, and 20/80 in the left eye; and color vision (Ishihara plates) was normal bilaterally. -
Mcardle Disease Associated Maculopathy and the Role of Glycogen in the Retina
Marques JH and Beirão JM, J Ophthalmic Clin Res 2020, 7: 067 DOI: 10.24966/OCR-8887/100067 HSOA Journal of Ophthalmology & Clinical Research Case Report demanding tissues like the RPE depend on glycogen phosphoryla- McArdle Disease associated tion to produce energy and, on the other hand, glycogen erroneous accumulation may impair cellular functions. Probably due to higher Maculopathy and the Role of photoreceptor concentration and subsequent energy demand in the macula, this is the primary site for degeneration in our patient. The Glycogen in the Retina present report reinforces the role of the glycogen pathway as a pos- sible player in the pathophysiology of RPE pathologies, genetically and/or environmentally determined. Keywords: Age-related macular degeneration; Geographic atrophy; João Heitor Marques1* and João Melo Beirão1,2 Glycogen; McArdle; Retinal pigmented epithelium 1Serviço de Oftalmologia, Centro Hospitalar e Universitário do Porto, Portugal Introduction 2Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Portugal Intracellular glycogen works as a buffer for glucose metabolism. Glycogen phosphorylase breaks down glycogen, making glucose available for aerobic and anaerobic energetic pathways. It can be rapidly metabolized without ATP requirement. A deficit in glycogen phosphorylation results, not only in energy shortage, but also in its Abstract intracellular accumulation, which may further interfere with other Purpose: To report a case of maculopathy with pattern dystrophy cellular functions. and geographic atrophy in a patient with McArdle disease and to review the glycogen pathway’s disorders as a source of energy but Glycogen Storage Disease type V (GSDV), also known as McAr- also cause of disease in the retina. -
Cellular and Molecular Signatures in the Disease Tissue of Early
Cellular and Molecular Signatures in the Disease Tissue of Early Rheumatoid Arthritis Stratify Clinical Response to csDMARD-Therapy and Predict Radiographic Progression Frances Humby1,* Myles Lewis1,* Nandhini Ramamoorthi2, Jason Hackney3, Michael Barnes1, Michele Bombardieri1, Francesca Setiadi2, Stephen Kelly1, Fabiola Bene1, Maria di Cicco1, Sudeh Riahi1, Vidalba Rocher-Ros1, Nora Ng1, Ilias Lazorou1, Rebecca E. Hands1, Desiree van der Heijde4, Robert Landewé5, Annette van der Helm-van Mil4, Alberto Cauli6, Iain B. McInnes7, Christopher D. Buckley8, Ernest Choy9, Peter Taylor10, Michael J. Townsend2 & Costantino Pitzalis1 1Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK. Departments of 2Biomarker Discovery OMNI, 3Bioinformatics and Computational Biology, Genentech Research and Early Development, South San Francisco, California 94080 USA 4Department of Rheumatology, Leiden University Medical Center, The Netherlands 5Department of Clinical Immunology & Rheumatology, Amsterdam Rheumatology & Immunology Center, Amsterdam, The Netherlands 6Rheumatology Unit, Department of Medical Sciences, Policlinico of the University of Cagliari, Cagliari, Italy 7Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow G12 8TA, UK 8Rheumatology Research Group, Institute of Inflammation and Ageing (IIA), University of Birmingham, Birmingham B15 2WB, UK 9Institute of -
Treatment Potential for LCA5-Associated Leber Congenital Amaurosis
Retina Treatment Potential for LCA5-Associated Leber Congenital Amaurosis Katherine E. Uyhazi,1,2 Puya Aravand,1 Brent A. Bell,1 Zhangyong Wei,1 Lanfranco Leo,1 Leona W. Serrano,2 Denise J. Pearson,1,2 Ivan Shpylchak,1 Jennifer Pham,1 Vidyullatha Vasireddy,1 Jean Bennett,1 and Tomas S. Aleman1,2 1Center for Advanced Retinal and Ocular Therapeutics (CAROT) and F.M. Kirby Center for Molecular Ophthalmology, University of Pennsylvania, Philadelphia, PA, USA 2Scheie Eye Institute at The Perelman Center for Advanced Medicine, University of Pennsylvania, Philadelphia, PA, USA Correspondence: Tomas S. Aleman, PURPOSE. To determine the therapeutic window for gene augmentation for Leber congen- Perelman Center for Advanced ital amaurosis (LCA) associated with mutations in LCA5. Medicine, University of Pennsylvania, 3400 Civic Center METHODS. Five patients (ages 6–31) with LCA and biallelic LCA5 mutations underwent Blvd, Philadelphia, PA 19104, USA; an ophthalmic examination including optical coherence tomography (SD-OCT), full-field [email protected]. stimulus testing (FST), and pupillometry. The time course of photoreceptor degeneration in the Lca5gt/gt mouse model and the efficacy of subretinal gene augmentation therapy Received: November 19, 2019 with AAV8-hLCA5 delivered at postnatal day 5 (P5) (early, n = 11 eyes), P15 (mid, n = 14), Accepted: March 16, 2020 = Published: May 19, 2020 and P30 (late, n 13) were assessed using SD-OCT, histologic study, electroretinography (ERG), and pupillometry. Comparisons were made with the human disease. Citation: Uyhazi KE, Aravand P, Bell BA, et al. Treatment potential for RESULTS. Patients with LCA5-LCA showed a maculopathy with detectable outer nuclear LCA5-associated Leber congenital layer (ONL) in the pericentral retina and at least 4 log units of dark-adapted sensitivity amaurosis. -
Molecular Effects of Isoflavone Supplementation Human Intervention Studies and Quantitative Models for Risk Assessment
Molecular effects of isoflavone supplementation Human intervention studies and quantitative models for risk assessment Vera van der Velpen Thesis committee Promotors Prof. Dr Pieter van ‘t Veer Professor of Nutritional Epidemiology Wageningen University Prof. Dr Evert G. Schouten Emeritus Professor of Epidemiology and Prevention Wageningen University Co-promotors Dr Anouk Geelen Assistant professor, Division of Human Nutrition Wageningen University Dr Lydia A. Afman Assistant professor, Division of Human Nutrition Wageningen University Other members Prof. Dr Jaap Keijer, Wageningen University Dr Hubert P.J.M. Noteborn, Netherlands Food en Consumer Product Safety Authority Prof. Dr Yvonne T. van der Schouw, UMC Utrecht Dr Wendy L. Hall, King’s College London This research was conducted under the auspices of the Graduate School VLAG (Advanced studies in Food Technology, Agrobiotechnology, Nutrition and Health Sciences). Molecular effects of isoflavone supplementation Human intervention studies and quantitative models for risk assessment Vera van der Velpen Thesis submitted in fulfilment of the requirements for the degree of doctor at Wageningen University by the authority of the Rector Magnificus Prof. Dr M.J. Kropff, in the presence of the Thesis Committee appointed by the Academic Board to be defended in public on Friday 20 June 2014 at 13.30 p.m. in the Aula. Vera van der Velpen Molecular effects of isoflavone supplementation: Human intervention studies and quantitative models for risk assessment 154 pages PhD thesis, Wageningen University, Wageningen, NL (2014) With references, with summaries in Dutch and English ISBN: 978-94-6173-952-0 ABSTRact Background: Risk assessment can potentially be improved by closely linked experiments in the disciplines of epidemiology and toxicology. -
Null Mutation of the Fascin2 Gene by TALEN Leading to Progressive Hearing Loss and Retinal Degeneration in C57BL/6J Mice
G3: Genes|Genomes|Genetics Early Online, published on August 6, 2018 as doi:10.1534/g3.118.200405 Null mutation of the Fascin2 gene by TALEN leading to progressive hearing loss and retinal degeneration in C57BL/6J mice Xiang Liu1,3,§, Mengmeng Zhao1,2,§, Yi Xie1,2, §, Ping Li1, Oumei Wang1 , Bingxin Zhou1,2, Linlin Yang1,4, Yao Nie1, Lin Cheng1, Xicheng Song1,5, Changzhu Jin1,3,**, Fengchan Han1,2,* 1Key Laboratory for Genetic Hearing Disorders in Shandong, Binzhou Medical University, 346 Guanhai Road, Yantai264003, Shandong, P. R. China 2Department of Biochemistry and Molecular Biology, Binzhou Medical University, 346 Guanhai Road, Yantai264003, Shandong, P. R. China 3Department of Human Anatomy and Histology and Embryology, Binzhou Medical University, 346 Guanhai Road, Yantai264003, Shandong, P. R. China 4Department of Otorhinolaryngology-Head and Neck Surgery, Yuhuangding Hospital, 20 East Yuhuangding Road, Yantai 264000, Shandong, P.R .China § These authors contribute equally *The First Corresponding Author: [email protected] **The Second Corresponding Author: [email protected] Key Laboratory for Genetic Hearing Disorders in Shandong, Department of Biochemistry and Molecular Biology, Binzhou Medical University, 346 Guanhai Road, Yantai264003, Shandong, P. R. China © The Author(s) 2013. Published by the Genetics Society of America. Abstract Fascin2 (FSCN2) is an actin cross-linking protein that is mainly localized in retinas and in the stereocilia of hair cells. Earlier studies showed that a deletion mutation in human FASCIN2 (FSCN2) gene could cause autosomal dominant retinitis pigmentosa. Recent studies have indicated that a missense mutation in mouse Fscn2 gene (R109H) can contribute to the early onset of hearing loss in DBA/2J mice. -
DJO Macular Dystrophy in a Post LASIK Patient
DJO Vol. 30, No. 3, January-March 2020 Case Report Macular Dystrophy in a Post LASIK Patient Sanjana Vatsa, Shana Sood Dr. Agarwal Eye Hospital, Chennai, Tamil Nadu, India LASIK (Laser Assisted Insitu keratomileusis) is the most commonly performed refractive surgery worldwide. A detailed pre operative and post operative evaluation of the anterior and posterior segment is a must. A 35 year old male patient with a history of LASIK surgery done 13 years back presented to us with complaint of painless, progressive diminution of vision in both eyes from past Abstract 2 years. Dilated retinal examination showed bulls eye maculopathy in both eyes. Macular OCT showed gross reduction in central foveal thickness. ERG showed marked reduction in photopic responses suggestive of a cone dystrophy. Treatment aims at alleviating the symptoms and use of low vision aids. Genetic counselling may be of benefit for affected individuals and their families. Delhi J Ophthalmol 2020;30;60-62; Doi http://dx.doi.org/10.7869/djo.529 Keywords: LASIK, Bulls eye maculopathy, cone dystrophy, genetic counselling. Introduction LASIK is the most popular and commonly performed refractive surgery worldwide.1 Along with anterior segment, a detailed evaluation of the posterior segment is a must on follow up visits to rule out any retinal lesions such as degenerations, dystrophies, maculopathy etc; as these can occur irrespective of any procedure performed. Case Report A 35 year old male patient came to us with a history of LASIK surgery done 13 years back in both eyes for a power of -7.0D sphere. Patient was comfortable with his vision after surgery and had no complaints for 11 years, after which he noticed blurring of vision in both eyes (more in the left eye). -
Supplementary Materials
Supplementary materials Supplementary Table S1: MGNC compound library Ingredien Molecule Caco- Mol ID MW AlogP OB (%) BBB DL FASA- HL t Name Name 2 shengdi MOL012254 campesterol 400.8 7.63 37.58 1.34 0.98 0.7 0.21 20.2 shengdi MOL000519 coniferin 314.4 3.16 31.11 0.42 -0.2 0.3 0.27 74.6 beta- shengdi MOL000359 414.8 8.08 36.91 1.32 0.99 0.8 0.23 20.2 sitosterol pachymic shengdi MOL000289 528.9 6.54 33.63 0.1 -0.6 0.8 0 9.27 acid Poricoic acid shengdi MOL000291 484.7 5.64 30.52 -0.08 -0.9 0.8 0 8.67 B Chrysanthem shengdi MOL004492 585 8.24 38.72 0.51 -1 0.6 0.3 17.5 axanthin 20- shengdi MOL011455 Hexadecano 418.6 1.91 32.7 -0.24 -0.4 0.7 0.29 104 ylingenol huanglian MOL001454 berberine 336.4 3.45 36.86 1.24 0.57 0.8 0.19 6.57 huanglian MOL013352 Obacunone 454.6 2.68 43.29 0.01 -0.4 0.8 0.31 -13 huanglian MOL002894 berberrubine 322.4 3.2 35.74 1.07 0.17 0.7 0.24 6.46 huanglian MOL002897 epiberberine 336.4 3.45 43.09 1.17 0.4 0.8 0.19 6.1 huanglian MOL002903 (R)-Canadine 339.4 3.4 55.37 1.04 0.57 0.8 0.2 6.41 huanglian MOL002904 Berlambine 351.4 2.49 36.68 0.97 0.17 0.8 0.28 7.33 Corchorosid huanglian MOL002907 404.6 1.34 105 -0.91 -1.3 0.8 0.29 6.68 e A_qt Magnogrand huanglian MOL000622 266.4 1.18 63.71 0.02 -0.2 0.2 0.3 3.17 iolide huanglian MOL000762 Palmidin A 510.5 4.52 35.36 -0.38 -1.5 0.7 0.39 33.2 huanglian MOL000785 palmatine 352.4 3.65 64.6 1.33 0.37 0.7 0.13 2.25 huanglian MOL000098 quercetin 302.3 1.5 46.43 0.05 -0.8 0.3 0.38 14.4 huanglian MOL001458 coptisine 320.3 3.25 30.67 1.21 0.32 0.9 0.26 9.33 huanglian MOL002668 Worenine -
Fascin (55Kd Actin-Bundling Protein, Singed-Like Protein, P55)
Fascin (55kD actin-bundling protein, Singed-like protein, p55) Catalog number 144510 Supplier United States Biological Fascin is a actin cross-linking protein.The Fascin gene contains 5 exons and spans 7 kb. It is a 54-58 kilodalton monomeric actin filament bundling protein originally isolated from sea urchin egg but also found in Drosophila and vertebrates, including humans. Fascin (from the Latin for bundle) is spaced at 11 nanometre intervals along the filament. The bundles in cross section are seen to be hexagonally packed, and the longitudinal spacing is compatible with a model where fascin cross-links at alternating 4 and 5 actins. It is calcium insensitive and monomeric. Fascin binds beta-catenin, and colocalizes with it at the leading edges and borders of epithelial and endothelial cells. The role of Fascin in regulating cytoskeletal structures for the maintenance of cell adhesion, coordinating motility and invasion through interactions with signalling pathways is an active area of research especially from the cancer biology perspective. Abnormal fascin expression or function has been implicated in breast cancer, colon cancer, esophageal squamous cell carcinoma, gallbladder cancer and prostate cancer. UniProt Number Q16658 Gene ID FSCN1 Applications Suitable for use in Western Blot. Recommended Dilution Optimal dilutions to be determined by the researcher. Storage and Handling Store at -20˚C for one year. After reconstitution, store at 4˚C for one month. Can also be aliquoted and stored frozen at -20˚C for long term. Avoid repeated freezing and thawing. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.