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https://www.readbyqxmd.com/read/28549842/mitochondrial-dysfunction-and-oxidative-stress-in-corneal-disease
#1
Neeru A Vallabh, Vito Romano, Colin E Willoughby
The cornea is the anterior transparent surface and the main refracting structure of the eye. Mitochondrial dysfunction and oxidative stress are implicated in the pathogenesis of inherited (e.g. Kearns Sayre Syndrome) and acquired corneal diseases (e.g. keratoconus and Fuchs endothelial corneal dystrophy). Both antioxidants and reactive oxygen species are found in the healthy cornea. There is increasing evidence of imbalance in the oxidative balance and mitochondrial function in the cornea in disease states...
May 23, 2017: Mitochondrion
https://www.readbyqxmd.com/read/28525563/omics-biomarkers-in-ophthalmology
#2
Susette Lauwen, Eiko K de Jong, Dirk J Lefeber, Anneke I den Hollander
"Omics" refers to high-throughput analyses of genes, proteins, or metabolites in a biological system, and is increasingly used for ophthalmic research. These system-based approaches can unravel disease-related processes and are valuable for biomarker discovery. Furthermore, potential therapeutic targets can be identified based on omics results, and targeted follow-up experiments can be designed to gain molecular understanding of the disease and to test new therapies. Here, we review the application of omics techniques in eye diseases, focusing on age-related macular degeneration (AMD), diabetic retinopathy (DR), retinal detachment (RD), myopia, glaucoma, Fuchs' corneal dystrophy (FCD), cataract, keratoconus, and dry eyes...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28520609/fuchs-endothelial-corneal-dystrophy-in-a-child
#3
Sunita Chaurasia, Muralidhar Ramappa
No abstract text is available yet for this article.
May 16, 2017: Cornea
https://www.readbyqxmd.com/read/28489792/eye-bank-prepared-versus-surgeon-cut-endothelial-graft-tissue-for-descemet-membrane-endothelial-keratoplasty-an-observational-study
#4
Marie Regnier, Céline Auxenfans, Delphine Maucort-Boulch, Anne-Sophie Marty, Odile Damour, Carole Burillon, Viridiana Kocaba
The purpose of this article is to examine outcomes of Descemet membrane endothelial keratoplasty (DMEK) performed with cornea bank (CB) prestripped tissue and surgeon stripped tissue (SST).This retrospective study examined subjects who underwent DMEK with CB or surgeon prepared tissue for Fuchs endothelial corneal dystrophy. Best-corrected visual acuity (BCVA), corneal thickness, endothelial cell count (ECC), and complications were examined before and throughout a 6-month postoperative period.Eleven CB and 22 SST subjects were included...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28486726/management-of-interface-fluid-syndrome-after-lasik-by-descemet-membrane-endothelial-keratoplasty-in-a-patient-with-fuchs-corneal-endothelial-dystrophy
#5
Mehdi Shajari, Parviz Rafiezadeh, Ivana Pavlovic, Kate Barbara Kubiak, Thomas Kohnen, Ingo Schmack
PURPOSE: To report a case of interface fluid syndrome after LASIK in a patient with Fuchs' corneal endothelial dystrophy treated with Descemet membrane endothelial keratoplasty (DMEK). METHODS: Case report. RESULTS: A 74-year-old patient presented with interface fluid syndrome and was treated with DMEK. Its complications in the form of partial graft detachment and cystoid macular edema were successfully managed by rebubbling and topical treatment, respectively...
May 1, 2017: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/28481834/immunohistochemical-profiling-of-corneas-with-fuchs-endothelial-corneal-dystrophy
#6
An-Katrien De Roo, Thomas Janssens, Beatrijs Foets, Joost J van den Oord
PURPOSE: Fuchs endothelial corneal dystrophy (FECD) is the leading indication for endothelial keratoplasty. Further insight into its pathophysiology is needed to develop alternative therapies. METHODS: Sixteen genes from a previous microarray expression experiment (FECD vs. normal) were validated using immunohistochemistry on paraffin-embedded corneas (n = 6 FECD, n = 6 normal). The results were quantified manually and semiautomatically. RESULTS: A higher percentage of corneal endothelial cells stained for alpha-smooth muscle actin (αSMA), cytokeratin 7, and superoxide dismutase 3 in FECD versus normal [odds ratios (ORs) of 60...
May 3, 2017: Cornea
https://www.readbyqxmd.com/read/28476048/descemetorhexis-without-grafting-for-fuchs-endothelial-dystrophy-supplementation-with-topical-ripasudil
#7
Gregory Moloney, Constantinos Petsoglou, Matthew Ball, Yves Kerdraon, Roland Höllhumer, Natasha Spiteri, Simone Beheregaray, Judith Hampson, Mario DʼSouza, Raj N Devasahayam
PURPOSE: To report the safety and efficacy of descemetorhexis without grafting as a primary intervention in Fuchs dystrophy, and the use of a ROCK inhibitor, ripasudil as a salvage agent in failing cases. METHODS: Twelve eyes of 11 patients underwent central descemetorhexis not exceeding 4 mm. All had Fuchs dystrophy-producing visual symptoms, requesting intervention. Exclusion criteria were a peripheral endothelial cell count <1000 and central edema. Corneal clearance and visual parameters were recorded monthly until corneal clearance was observed, then at intervals of 6 months...
June 2017: Cornea
https://www.readbyqxmd.com/read/28437275/descemet-membrane-endothelial-keratoplasty-after-failed-descemet-stripping-without-endothelial-keratoplasty
#8
Rohini Rao, Durga S Borkar, Kathryn A Colby, Peter B Veldman
PURPOSE: To describe the clinical course, surgical experience, and postoperative outcomes of 3 patients with Fuchs endothelial dystrophy who underwent Descemet membrane endothelial keratoplasty (DMEK) after failed Descemet stripping without endothelial keratoplasty. METHODS: Three patients who underwent DMEK for management of persistent corneal edema after deliberate Descemet stripping in the setting of Fuchs endothelial dystrophy were identified. Patients were examined at day 1, week 1, and months 1, 3, and 6 after DMEK...
April 21, 2017: Cornea
https://www.readbyqxmd.com/read/28410548/two-year-clinical-outcome-of-500-consecutive-cases-undergoing-descemet-membrane-endothelial-keratoplasty
#9
Jorge Peraza-Nieves, Lamis Baydoun, Isabel Dapena, Abbas Ilyas, Laurence E Frank, Salvatore Luceri, Lisanne Ham, Silke Oellerich, Gerrit R J Melles
PURPOSE: To evaluate the clinical outcome of 500 consecutive cases up to 2 years after Descemet membrane endothelial keratoplasty (DMEK) and to assess which parameters may have influenced the clinical outcome. METHODS: From a group of 500 eyes (393 patients), which underwent DMEK for Fuchs endothelial corneal dystrophy (FECD), bullous keratopathy, failed corneal transplants and other indications, clinical outcomes [best-corrected visual acuity (BCVA), central endothelial cell density (ECD), and central corneal thickness] were evaluated before, and at 6, 12, and 24 months after DMEK and postoperative complications were documented...
June 2017: Cornea
https://www.readbyqxmd.com/read/28410361/rates-of-intraocular-pressure-elevation-and-use-of-topical-antihypertensive-medication-after-descemet-stripping-automated-endothelial-keratoplasty
#10
Mona Kaleem, Faisal Ridha, Zryan Shwani, Bonnielin Swenor, Jeffrey Goshe, Annapurna Singh
PURPOSE: To investigate intraocular pressure (IOP) elevation and medication augmentation after Descemet stripping automated endothelial keratoplasty (DSAEK) in those with and without glaucoma. METHODS: The records of 379 patients who underwent DSAEK at the Cleveland Clinic Foundation between January 2009 and 2014 were retrospectively reviewed. Postoperative IOP elevations were considered significant if IOP was ≥22 mm Hg on at least 1 follow-up visit or if it increased by ≥10 mm Hg from baseline...
June 2017: Cornea
https://www.readbyqxmd.com/read/28410355/descemetorhexis-without-graft-placement-for-the-treatment-of-fuchs-endothelial-dystrophy-preliminary-results-and-review-of-the-literature
#11
Alfonso Iovieno, Alberto Neri, Anna Maria Soldani, Chantal Adani, Luigi Fontana
PURPOSE: To report our preliminary experience with a central descemetorhexis without graft placement in Fuchs endothelial corneal dystrophy (FECD) and to review the existing literature on the topic. METHODS: A 4-mm central descemetorhexis was performed in 5 patients (4 women, 1 man; mean age: 69.8 ± 8.6 yrs; range: 57-78 yrs) with FECD. All patients had central confluent guttae, undetectable central endothelial cell count, healthy peripheral corneal endothelium, no clinically evident bullous keratopathy, and no ocular comorbidities...
June 2017: Cornea
https://www.readbyqxmd.com/read/28387761/assessment-of-a-three-generation-pedigree-with-fuchs-endothelial-corneal-dystrophy-with-anticipation-for-expansion-of-the-triplet-repeat-in-the-tcf4-gene
#12
M A Greiner, D C Terveen, J M Vislisel, B R Roos, J H Fingert
No abstract text is available yet for this article.
April 7, 2017: Eye
https://www.readbyqxmd.com/read/28384203/comprehensive-characterization-of-dna-methylation-changes-in-fuchs-endothelial-corneal-dystrophy
#13
Emily Khuc, Russell Bainer, Marie Wolf, Selene M Clay, Daniel J Weisenberger, Jacquelyn Kemmer, Valerie M Weaver, David G Hwang, Matilda F Chan
Transparency of the human cornea is necessary for vision. Fuchs Endothelial Corneal Dystrophy (FECD) is a bilateral, heritable degeneration of the corneal endothelium, and a leading indication for corneal transplantation in developed countries. While the early onset, and rarer, form of FECD has been linked to COL8A2 mutations, the more common, late onset form of FECD has genetic mutations linked to only a minority of cases. Epigenetic modifications that occur in FECD are unknown. Here, we report on and compare the DNA methylation landscape of normal human corneal endothelial (CE) tissue and CE from FECD patients using the Illumina Infinium HumanMethylation450 (HM450) DNA methylation array...
2017: PloS One
https://www.readbyqxmd.com/read/28381247/outcomes-of-descemet-stripping-automated-endothelial-keratoplasty-using-imported-donor-corneas
#14
Kaevalin Lekhanont, Kavin Vanikieti, Nutthida Nimvorapun, Varintorn Chuckpaiwong
BACKGROUND: The lack of development of local donor tissue acquisition in several regions of the world has resulted in the necessity of performing keratoplasty with imported donor corneas. The greatest concern about the use of donor corneas supplied by foreign eye banks is the effect of the increased donor death-to-operation time which inevitably occurs during the tissue recovery, tissue processing, and tissue transfer between the countries. The purpose of this study was to report the outcomes of descemet stripping automated endothelial keratoplasty (DSAEK) using imported donor corneas...
April 5, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28358029/genome-wide-association-study-identifies-three-novel-loci-in-fuchs-endothelial-corneal-dystrophy
#15
Natalie A Afshari, Robert P Igo, Nathan J Morris, Dwight Stambolian, Shiwani Sharma, V Lakshmi Pulagam, Steven Dunn, John F Stamler, Barbara J Truitt, Jacqueline Rimmler, Abraham Kuot, Christopher R Croasdale, Xuejun Qin, Kathryn P Burdon, S Amer Riazuddin, Richard Mills, Sonja Klebe, Mollie A Minear, Jiagang Zhao, Elmer Balajonda, George O Rosenwasser, Keith H Baratz, V Vinod Mootha, Sanjay V Patel, Simon G Gregory, Joan E Bailey-Wilson, Marianne O Price, Francis W Price, Jamie E Craig, John H Fingert, John D Gottsch, Anthony J Aldave, Gordon K Klintworth, Jonathan H Lass, Yi-Ju Li, Sudha K Iyengar
The structure of the cornea is vital to its transparency, and dystrophies that disrupt corneal organization are highly heritable. To understand the genetic aetiology of Fuchs endothelial corneal dystrophy (FECD), the most prevalent corneal disorder requiring transplantation, we conducted a genome-wide association study (GWAS) on 1,404 FECD cases and 2,564 controls of European ancestry, followed by replication and meta-analysis, for a total of 2,075 cases and 3,342 controls. We identify three novel loci meeting genome-wide significance (P<5 × 10(-8)): KANK4 rs79742895, LAMC1 rs3768617 and LINC00970/ATP1B1 rs1200114...
March 30, 2017: Nature Communications
https://www.readbyqxmd.com/read/28346276/comparison-of-noncontact-specular-and-confocal-microscopy-for-evaluation-of-corneal-endothelium
#16
Jianyan Huang, Jyotsna Maram, Tudor C Tepelus, Srinivas R Sadda, Vikas Chopra, Olivia L Lee
PURPOSE: To compare endothelial cell analysis obtained by noncontact specular and confocal microscopy, using the Konan NSP-9900 and Nidek ConfoScan4 systems, respectively. METHODS: Three groups including 70 healthy eyes, 49 eyes with Fuchs endothelial corneal dystrophy (FECD), and 78 eyes with glaucoma were examined with both the Konan NSP-9900 specular microscope and the Nidek ConfocScan4 confocal microscope. Certified graders at the Doheny Image Reading Center compared corneal endothelial images from both instruments side by side to assess image quality...
March 24, 2017: Eye & Contact Lens
https://www.readbyqxmd.com/read/28320557/study-of-light-scattering-using-c-quant-%C3%A2-in-patients-with-fuchs-endothelial-dystrophy-a-pilot-study
#17
B Castaño-Martín, J Gros-Otero, J Martínez, M Teus
OBJECTIVE: The purpose of this study was to determine the light scattering in patients with Fuchs' endothelial dystrophy without clinically significant corneal oedema, and evaluate its relationship with endothelial cell count, corneal thickness, and corneal biomechanical parameters. MATERIALS AND METHODS: The values of light scattering were measured by C-Quant(®) (Oculus Optikgeräte GmbH, Germany) in 32 eyes of 17 patients diagnosed with Fuchs' endothelial dystrophy without clinically significant corneal oedema...
March 17, 2017: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/28306600/modeling-endothelial-cell-loss-after-descemet-stripping-endothelial-keratoplasty-data-from-5-years-of-follow-up
#18
Mark A P Fajgenbaum, Emma J Hollick
PURPOSE: To report 5-year outcomes for graft survival and endothelial cell survival after Descemet stripping endothelial keratoplasty (DSEK) including regression modeling for cell survival over time. METHODS: This is a single-institution, retrospective, consecutive interventional series of 210 primary DSEK grafts operated for low-to-moderate risk indications, specifically Fuchs dystrophy and bullous keratopathy. Primary outcomes were cumulative graft survival and % endothelial cell loss from 3 months through 5 years; the secondary outcome was to trend endothelial cell density over time by least-squares and mixed nonlinear modeling...
May 2017: Cornea
https://www.readbyqxmd.com/read/28282692/anterior-and-posterior-lamellar-graft-on-the-same-eye-to-treat-fuchs-endothelial-corneal-dystrophy-the-corneal-sandwich-graft
#19
S Hardy, I Guber, L Franscini, F Majo
No abstract text is available yet for this article.
April 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28271013/ultrahigh-resolution-oct-imaging-of-the-human-cornea
#20
René M Werkmeister, Sabina Sapeta, Doreen Schmidl, Gerhard Garhöfer, Gerald Schmidinger, Valentin Aranha Dos Santos, Gerold C Aschinger, Isabella Baumgartner, Niklas Pircher, Florian Schwarzhans, Anca Pantalon, Harminder Dua, Leopold Schmetterer
We present imaging of corneal pathologies using optical coherence tomography (OCT) with high resolution. To this end, an ultrahigh-resolution spectral domain OCT (UHR-OCT) system based on a broad bandwidth Ti:sapphire laser is employed. With a central wavelength of 800 nm, the imaging device allows to acquire OCT data at the central, paracentral and peripheral cornea as well as the limbal region with 1.2 µm x 20 µm (axial x lateral) resolution at a rate of 140 000 A-scans/s. Structures of the anterior segment of the eye, not accessible with commercial OCT systems, are visualized...
February 1, 2017: Biomedical Optics Express
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