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Fuchs' corneal dystrophy

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https://www.readbyqxmd.com/read/28211878/pre-descemets-endothelial-keratoplasty-the-pdek-clamp-for-successful-pdek
#1
H S Dua, D G Said
PurposeTo design and produce a clamp that enables good handling of donor sclera-corneal disks, allows air to be injected in the corneal stroma and consistently provides pre-Descemets endothelial keratoplasty (PDEK) tissue by creation of a type-1 big bubble (BB) avoiding a type-2BB by shutting the fenestrations in the periphery of the pre-Descemets layer and preventing escape of air.Patients and methodsA clamp with spring loaded handles attached to two rings of 9 mm diameter and 1 mm width with a side port for insertion of a needle for air injection was designed and produced...
February 17, 2017: Eye
https://www.readbyqxmd.com/read/28159976/screening-and-characterization-of-drugs-that-protect-corneal-endothelial-cells-against-unfolded-protein-response-and-oxidative-stress
#2
Eun Chul Kim, Tetsuya Toyono, Cynthia A Berlinicke, Donald J Zack, Ula Jurkunas, Tomohiko Usui, Albert S Jun
Purpose: To screen for and characterize compounds that protect corneal endothelial cells against unfolded protein response (UPR) and oxidative stress. Methods: Bovine corneal endothelial cells (BCECs) were treated for 48 hours with 640 compounds from a Food and Drug Administration (FDA)-approved drug library and then challenged with thapsigargin or H2O2 to induce UPR or oxidative stress, respectively. Cell viability was measured using the CellTiter-Glo survival assay...
February 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28135362/identification-of-circulating-fibrocytes-and-dendritic-derivatives-in-corneal-endothelium-of-patients-with-fuchs-dystrophy
#3
An-Katrien De Roo, Jasper Wouters, Olivier Govaere, Beatrijs Foets, Joost J van den Oord
Purpose: Fuchs' endothelial corneal dystrophy (FECD) is a degenerative eye disorder affecting 4% of Americans older than 40. It is the leading indication for corneal endothelial (CE) transplantation for which there is a global donor shortage. This study aimed to gain further insight into the pathophysiology of FECD and identify targets for nonsurgical therapy. Methods: CE from patients with late-onset FECD was compared with that of normal controls using microarray expression analysis (n = 4 FECD, n = 4 normal), reverse transcriptase quantitative PCR (n = 9 FECD, n = 8 normal), and immunohistology (n = 55 FECD, n = 15 normal)...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28118661/trinucleotide-repeat-expansion-in-the-transcription-factor-4-tcf4-gene-leads-to-widespread-mrna-splicing-changes-in-fuchs-endothelial-corneal-dystrophy
#4
Eric D Wieben, Ross A Aleff, Xiaojia Tang, Malinda L Butz, Krishna R Kalari, Edward W Highsmith, Jin Jen, George Vasmatzis, Sanjay V Patel, Leo J Maguire, Keith H Baratz, Michael P Fautsch
Purpose: To identify RNA missplicing events in human corneal endothelial tissue isolated from Fuchs' endothelial corneal dystrophy (FECD). Methods: Total RNA was isolated and sequenced from corneal endothelial tissue obtained during keratoplasty from 12 patients with FECD and 4 patients undergoing keratoplasty or enucleation for other indications. The length of the trinucleotide repeat (TNR) CTG in the transcription factor 4 (TCF4) gene was determined using leukocyte-derived DNA analyzed by a combination of Southern blotting and Genescan analysis...
January 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28079694/eventual-endothelial-failure-after-initial-corneal-clearing-after-a-detached-endothelial-graft-in-fuchs-dystrophy
#5
Takahiko Hayashi, Itaru Oyakawa, Naoko Kato
No abstract text is available yet for this article.
March 2017: Cornea
https://www.readbyqxmd.com/read/28060074/eventual-endothelial-failure-after-initial-corneal-clearing-after-a-detached-endothelial-graft-in-fuchs-dystrophy
#6
Hyunjoo J Lee, Wuqaas M Munir
PURPOSE: To report a case of eventual corneal endothelial cell failure after spontaneous resolution of corneal edema after failed Descemet membrane endothelial keratoplasty (DMEK). METHODS: Retrospective case report. RESULTS: A 56-year-old man with Fuchs endothelial corneal dystrophy underwent cataract and DMEK surgery in the left eye. The transplanted DMEK graft detached in the early postoperative period and formed a peripheral scroll. Despite graft detachment, corneal edema resolved with endothelial cell repopulation of the central cornea...
February 2017: Cornea
https://www.readbyqxmd.com/read/28002107/astigmatism-correction-with-toric-intraocular-lenses-in-descemet-membrane-endothelial-keratoplasty-triple-procedures
#7
Hideaki Yokogawa, P James Sanchez, Zachary M Mayko, Michael D Straiko, Mark A Terry
PURPOSE: To report the clinical efficacy of astigmatism correction with toric intraocular lenses (IOLs) in patients undergoing the Descemet membrane endothelial keratoplasty (DMEK) triple procedure and to evaluate the accuracy of the correction. METHODS: Fifteen eyes of 10 patients who received cataract extraction, toric IOL placement, and DMEK surgery for Fuchs corneal dystrophy and cataracts were evaluated. The cylinder power of toric IOLs was determined by an online toric calculator with keratoscopy measurements obtained using Scheimpflug corneal imaging...
March 2017: Cornea
https://www.readbyqxmd.com/read/27994806/descemet-stripping-automated-endothelial-keratoplasty-in-fuchs-endothelial-dystrophy-versus-pseudophakic-bullous-keratopathy
#8
Mohammad Ali Javadi, Sepehr Feizi, Roya Jafari, Firooz Mirbabaee, Vahid Ownagh
PURPOSE: To compare clinical and confocal scan outcomes after Descemet stripping automated endothelial keratoplasty (DSAEK) performed for Fuchs' endothelial dystrophy (FED) versus pseudophakic bullous keratopathy (PBK). METHODS: This retrospective comparative study included 47 consecutive eyes of 39 patients with the diagnosis of FED (n = 29, group 1) or PBK (n = 18, group 2) that underwent DSAEK. Clinical outcomes were compared between the study groups. At the final follow-up examination, confocal microscopy was used to measure and compare central corneal and graft thickness as well as endothelial cell density and morphology between the two groups...
October 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27986425/two-year-course-of-corneal-densitometry-after-descemet-membrane-endothelial-keratoplasty-dmek
#9
Friederike Schaub, Philip Enders, Cornelius Bluhm, Björn O Bachmann, Claus Cursiefen, Ludwig M Heindl
PURPOSE: To investigate the two-year course of corneal densitometry following Descemet membrane endothelial keratoplasty (DMEK) for Fuchs endothelial dystrophy (FED). DESIGN: Retrospective, interventional case series. METHODS: Densitometry values (corneal light backscatter in greyscale units) measured by Scheimpflug-based imaging and clinical records of 160 eyes of 160 patients undergoing DMEK for FED were reviewed. Outcome measures included densitometry data in 4 corneal layers (anterior layer (AL), central layer (CL), posterior layer (PL), and total layer (TL)) and 2 annuli (central annular zone 0-2mm and peripheral zone 2-10mm), central corneal thickness (CCT), best spectacle-corrected visual acuity (BSCVA), and endothelial cell density (ECD) prior to DMEK and at 1, 3, 6, 12, and 24 months postoperatively...
December 13, 2016: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/27974291/organ-cultured-prestripped-donor-tissue-for-dmek-surgery-clinical-outcomes
#10
Johannes Menzel-Severing, Friedrich E Kruse, Theofilos Tourtas
AIM: To determine whether clinical performance is negatively affected by prestripping Descemet membrane endothelial keratoplasty (DMEK) grafts from organ-cultured corneas. METHODS: We reviewed clinical records of all patients who underwent DMEK surgery for Fuchs endothelial dystrophy between 28 October 2014 and 11 August 2015. Grafts had been prepared from organ-cultured corneoscleral buttons 24 hours prior to surgery or during surgery. We included only patients for which at least one follow-up examination was available at a minimum of 2 months postoperatively...
December 14, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27965261/very-early-endothelial-cell-loss-after-penetrating-keratoplasty-with-organ-cultured-corneas
#11
Anne Sophie Gauthier, Thibaud Garcin, Gilles Thuret, Zhiguo He, Remy Jullienne, Marie Caroline Trone, Chaker Nefzaoui, Sophie Acquart, Fabien Forest, Michel Péoc'h, Bernard Delbosc, Philippe Gain
AIMS: After keratoplasty, postoperative endothelial cell loss is calculated between the eye bank endothelial cell density (ebECD) and the postoperative specular microscopy (SM). To elucidate the very early cell loss, always described after penetrating keratoplasty (PK), we designed two complementary studies. METHODS: (1) Clinical prospective study of 90 consecutive PKs (keratoconus, Fuchs' corneal dystrophy, lattice dystrophy, bullous keratopathy) with organ-cultured corneas and postoperative follow-up by SM at day 5 (D5), D15, month 1 (M1) and M3...
December 13, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27956322/fuch-s-dystrophy-associated-with-radial-keratotomy-lamellar-or-perforating-keratoplasty
#12
P Rodriguez-Ausin, D Antolin-Garcia, L Santamaria Garcia, A-B Blazquez-Fernandez
CASE REPORT: A 70 year-old male patient with a history of radial keratotomy suffering from Fuch's dystrophy and a cataract. The patient received a two-step surgery: lens phacoemulsification and intraocular lens implant, followed by descemet stripping automated endothelial keratoplasty in both eyes, four months later. There were no complications apart from a recurrent cystoid macular oedema in both eyes. The best corrected visual acuity was 20/40 both eyes, and the patient was satisfied...
December 7, 2016: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/27941386/ten-year-clinical-outcome-of-the-first-patient-undergoing-descemet-membrane-endothelial-keratoplasty
#13
Lamis Baydoun, Thomas Müller, Itay Lavy, Jack Parker, Marina Rodriguez-Calvo-de-Mora, Vasilios S Liarakos, Isabel Dapena, Gerrit R J Melles
PURPOSE: To describe the 10-year clinical outcome of the first patient worldwide who underwent Descemet membrane endothelial keratoplasty (DMEK). METHODS: In 2006, a 63-year-old man presented at the Melles Cornea Clinic, Rotterdam, with bilateral Fuchs endothelial dystrophy and cataract. After phacoemulsification, in vivo DMEK was performed in the left eye and 10 months later in the right eye. Best spectacle-corrected visual acuity (BSCVA), endothelial cell density, pachymetry, and complications were recorded every 6 months over a 10-year period...
March 2017: Cornea
https://www.readbyqxmd.com/read/27925686/slc4a11-three-dimensional-homology-model-rationalizes-corneal-dystrophy-causing-mutations
#14
Katherine E Badior, Kumari Alka, Joseph R Casey
We studied the structural effects of point mutations of a membrane protein that cause genetic disease. SLC4A11 is a membrane transport protein (OH(-) /H(+) /NH3 /H2 O) of basolateral corneal endothelium, whose mutations cause some cases of congenital hereditary endothelial dystrophy and Fuchs endothelial corneal dystrophy. We created a three-dimensional homology model of SLC4A11 membrane domain, using Band 3 (SLC4A1) crystal structure as template. The homology model was assessed in silico and by analysis of mutants designed on the basis of the model...
March 2017: Human Mutation
https://www.readbyqxmd.com/read/27918355/experienced-dsaek-surgeon-s-transition-to-dmek-outcomes-comparing-the-last-100-dsaek-surgeries-with-the-first-100-dmek-surgeries-exclusively-using-previously-published-techniques
#15
Paul M Phillips, Louis J Phillips, Valliamai Muthappan, Charlene M Maloney, Christopher N Carver
PURPOSE: To compare outcomes of Descemet stripping automated endothelial keratoplasty (DSAEK) and Descemet membrane endothelial keratoplasty (DMEK) when an experienced DSAEK surgeon transitions to DMEK while following 2 published endothelial keratoplasty surgical techniques. METHODS: This is a retrospective review of 200 eyes of 132 patients with Fuchs corneal dystrophy that underwent endothelial keratoplasty performed by one surgeon. Published, standardized techniques were followed for both DSAEK and DMEK...
March 2017: Cornea
https://www.readbyqxmd.com/read/27897118/smoking-and-eye-pathologies-a-systemic-review-part-i-anterior-eye-segment-pathologies
#16
Małgorzata Nita, Andrzej Grzybowski
BACKGROUND: Tobacco smoking has detrimental influence on human health and is one of the leading causes of preventable mortality worldwide, associated with lung cancer, chronic obstructive lung disease and cardiovascular disease. AIM: The analysis of the influence of tobacco smoking on pathology of the anterior segment of the eye in adults and children. METHODS: A comprehensive review of the literature performed through MEDLINE and PubMed searches, was published during the period 2000-2016...
November 29, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27820951/elevated-cytokine-levels-in-the-aqueous-humor-of-eyes-with-bullous-keratopathy-and-low-endothelial-cell-density
#17
Takefumi Yamaguchi, Kazunari Higa, Terumasa Suzuki, Naohiko Nakayama, Yukari Yagi-Yaguchi, Murat Dogru, Yoshiyuki Satake, Jun Shimazaki
Purpose: To evaluate cytokine levels in the aqueous humor (AqH) of eyes with bullous keratopathy (BK) and low endothelial cell density (ECD). Methods: A total of 145 AqH samples (60 BK, 16 low ECD, 35 corneal diseases with normal ECD, and 34 normal controls) were collected from consecutive patients who underwent corneal transplantation or cataract surgery. None of the patients had any clinically apparent inflammation at the time of AqH collection. The AqH levels of cytokines (IL-1α, IL-1β, IL-2, IL-4, IL-6, IL-8, IL-10, IL-12p70, IL-13, IL-17A, IFN-α, IFN-γ, monocyte chemotactic protein [MCP]-1, TNF-α, E-selectin, P-selectin, soluble intercellular adhesion molecule [sICAM]-1, granulocyte-macrophage colony-stimulating factor [GM-CSF], macrophage inflammatory protein [MIP] -1α and MIP-1β) were compared among the groups...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27811565/automated-retroillumination-photography-analysis-for-objective-assessment-of-fuchs-corneal-dystrophy
#18
Allen O Eghrari, Aisha A Mumtaz, Brian Garrett, Mahsa Rezaei, Mina S Akhavan, S Amer Riazuddin, John D Gottsch
PURPOSE: Retroillumination photography analysis is an objective tool for the assessment of the number and distribution of guttae in eyes affected with Fuchs corneal dystrophy (FCD). Current protocols include manual processing of images; here, we assess validity and interrater reliability of automated analysis across various levels of FCD severity. METHODS: Retroillumination photographs of 97 FCD-affected corneas were acquired, and total counts of guttae were previously summated manually...
January 2017: Cornea
https://www.readbyqxmd.com/read/27805532/visual-rehabilitation-after-penetrating-keratoplasty
#19
Leyla Asena, Dilek D Altınörs
OBJECTIVES: Here, our aim was to report our treatment strategies and their results performed for visual rehabilitation after penetrating keratoplasty. MATERIALS AND METHODS: The medical records of 98 patients (54 male/44 female), with results from 104 eyes, who underwent penetrating keratoplasty between January 2013 and January 2015 at the Baskent University Faculty of Medicine, Department of Ophthalmology were reviewed. Patient age, indication for penetrating keratoplasty, interventions performed for visual rehabilitation, follow-up duration, topographic and refractive astigmatism at the end of follow-up, and final best corrected visual acuity results were recorded...
2016: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/27802523/restoration-of-mitochondrial-integrity-telomere-length-and-sensitivity-to-oxidation-by-in-vitro-culture-of-fuchs-endothelial-corneal-dystrophy-cells
#20
Sébastien P Gendron, Mathieu Thériault, Stéphanie Proulx, Isabelle Brunette, Patrick J Rochette
Purpose: Fuchs' endothelial corneal dystrophy (FECD), a degenerative disease of the corneal endothelium that leads to vision loss, is a leading cause of corneal transplantation. The cause of this disease is still unknown, but the implication of oxidative stress is strongly suggested. In this study, we analyzed the impact of FECD on mitochondrial DNA (mtDNA) integrity and telomere length, both of which are affected by the oxidative status of the cell. Methods: We compared the levels of total mtDNA, mtDNA common deletion (4977 bp), and relative telomere length in the corneal endothelial cells of fresh Descemet's membrane-endothelium explants and cultured cells from healthy and late stage FECD subjects...
November 1, 2016: Investigative Ophthalmology & Visual Science
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