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Fuchs cornea

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https://www.readbyqxmd.com/read/29338061/feasibility-of-cell-based-therapy-combined-with-descemetorhexis-for-treating-fuchs-endothelial-corneal-dystrophy-in-rabbit-model
#1
Naoki Okumura, Daiki Matsumoto, Yuya Fukui, Masataka Teramoto, Hirofumi Imai, Tetta Kurosawa, Tomoki Shimada, Friedrich Kruse, Ursula Schlötzer-Schrehardt, Shigeru Kinoshita, Noriko Koizumi
Corneal transparency is maintained by the corneal endothelium through its pump and barrier function. Severe corneal endothelial damage results in dysregulation of water flow and eventually causes corneal haziness and deterioration of visual function. In 2013, we initiated clinical research of cell-based therapy for treating corneal decompensation. In that study, we removed an 8-mm diameter section of damaged corneal endothelium without removing Descemet's membrane (the basement membrane of the corneal endothelium) and then injected cultured human corneal endothelial cells (CECs) into the anterior chamber...
2018: PloS One
https://www.readbyqxmd.com/read/29325021/oligonucleotides-targeting-tcf4-triplet-repeat-expansion-inhibit-rna-foci-and-mis-splicing-in-fuchs-dystrophy
#2
Jiaxin Hu, Ziye Rong, Xin Gong, Zhengyang Zhou, Vivek K Sharma, Chao Xing, Jonathan K Watts, David R Corey, V Vinod Mootha
Fuchs' endothelial corneal dystrophy (FECD) is the most common repeat expansion disorder. FECD impacts 4% of United States population and is the leading indication for corneal transplantation. Most cases are caused by an expanded intronic CUG tract in the TCF4 gene that forms nuclear foci, sequesters splicing factors, and impairs splicing. We investigated the sense and antisense RNA landscape at the FECD gene and find that the sense expanded repeat transcript is the predominant species in patient corneas. In patient tissue, sense foci number were negatively correlated with age and showed no correlation with sex...
January 8, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29223239/phacoemulsification-with-intraocular-lens-implantation-after-previous-descemetorhexis-without-endothelial-keratoplasty
#3
Aaron R Kaufman, Ricardo M Nosé, Yifan Lu, Roberto Pineda
A 58-year-old woman with bilateral Fuchs endothelial corneal dystrophy presented with predominantly central guttata in the left eye causing visually significant stromal edema. A 4.0 mm descemetorhexis without endothelial keratoplasty was performed. At the 6-week follow-up, the central cornea had cleared completely and the central endothelial cell density (ECD) was 541 cells/mm2. The central corneal clearing remained stable for 2 years after the procedure; however, vision declined because of a visually significant cataract in the left eye...
November 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29213190/smartphone-based-imaging-of-the-corneal-endothelium-at-sub-cellular-resolution
#4
Devrim Toslak, Damber Thapa, Muhammet Kazim Erol, Yanjun Chen, Xincheng Yao
This aim of this study was to test the feasibility of smartphone-based specular microscopy of the corneal endothelium at a sub-cellular resolution. Quantitative examination of endothelial cells is essential for evaluating corneal disease such as determining a diagnosis, monitoring progression and assessing treatment. Smartphone-based technology promises a new opportunity to develop affordable devices to foster quantitative examination of endothelial cells in rural and underserved areas. In our study, we incorporated an iPhone 6 and a slit lamp to demonstrate the feasibility of smartphone-based microscopy of the corneal endothelium at a sub-cellular resolution...
2017: Journal of Modern Optics
https://www.readbyqxmd.com/read/29132691/-practical-assessment-of-dsaek-in-the-management-of-endothelial-decompensation-following-penetrating-keratoplasty
#5
E Neiter, C Goetz, F Tortuyaux, A Ehrhardt, N Houmad, J-M Perone
PURPOSE: To report our anatomical and functional results as well as possible complications of the first six Descemet's stripping endothelial keratoplasties (DSAEK) performed in our department for endothelial decompensation after penetrating keratoplasty (PK) METHODS: This was a retrospective and observational monocentric study of six patients with DSAEK after prior PK between January 2015 and July 2016. The data collected were: demographic characteristics (age, sex), ophthalmological comorbidities, initial indication for PK, delay between PK and DSAEK...
November 11, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/29127432/corneal-endothelial-cell-loss-3-years-after-successful-descemet-stripping-automated-endothelial-keratoplasty-in-the-cornea-preservation-time-study-a-randomized-clinical-trial
#6
Jonathan Lass, Beth Ann Benetz, David D Verdier, Loretta B Szczotka-Flynn, Allison R Ayala, Wendi Liang, Anthony J Aldave, Steven P Dunn, Tryone McCall, Shahzad I Mian, Lisa C Navarro, Sanjay V Patel, Sudeep Pramanik, George O Rosenwasser, Kevin W Ross, Mark A Terry, Craig Kollman, Robin L Gal, Roy W Beck
Importance: Demonstrating that endothelial cell loss following Descemet stripping automated endothelial keratoplasty (DSAEK) is independent of donor cornea preservation time (PT) could increase the pool of corneal tissue available for keratoplasty. Objective: To determine whether endothelial cell loss 3 years after successful DSAEK is related to PT. Design, Setting, and Participants: A multicenter, double-masked, randomized clinical trial included 40 clinical sites (70 surgeons) in the United States, with donor corneas provided by 23 US eye banks...
December 1, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29127431/effect-of-cornea-preservation-time-on-success-of-descemet-stripping-automated-endothelial-keratoplasty-a-randomized-clinical-trial
#7
George O Rosenwasser, Loretta B Szczotka-Flynn, Allison R Ayala, Wendi Liang, Anthony J Aldave, Steven P Dunn, Tyrone McCall, Lisa C Navarro, Sudeep Pramanik, Kevin W Ross, R Doyle Stulting, Mark A Terry, Elmer Y Tu, David D Verdier, Craig Kollman, Robin L Gal, Roy W Beck, Jonathan H Lass
Importance: Demonstrating that success of Descemet stripping automated endothelial keratoplasty is similar across donor cornea preservation times (PTs) could increase the donor pool. Objective: To determine whether the 3-year rate of graft success using corneal donor tissue preserved 8 to 14 days is noninferior to that of donor tissue preserved 7 days or less. Design, Setting, and Participants: A multicenter, double-masked, randomized noninferiority clinical trial was conducted from April 16, 2012, to June 5, 2017, at 40 clinical sites (70 surgeons) in the United States, with donor corneas provided by 23 US eye banks...
December 1, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/29077583/phenotypic-characterization-of-corneal-endothelial-dystrophy-in-german-shorthaired-and-wirehaired-pointers-using-in-vivo-advanced-corneal-imaging-and-histopathology
#8
Olivia R Shull, Christopher M Reilly, Lola B Davis, Christopher J Murphy, Sara M Thomasy
PURPOSE: To evaluate corneal morphology using ultrasonic pachymetry (USP), Fourier-domain optical coherence tomography (FD-OCT), and in vivo confocal microscopy (IVCM) in 2 related canine breeds-German shorthaired pointers (GSHPs) and German wirehaired pointers (GWHPs)-with and without corneal endothelial dystrophy (CED). This condition is characterized by premature endothelial cell degeneration leading to concomitant corneal edema and is similar to Fuchs endothelial corneal dystrophy...
October 25, 2017: Cornea
https://www.readbyqxmd.com/read/28968295/descemet-membrane-endothelial-transfer-ultimate-outcome
#9
Rénuka S Birbal, Jack Parker, Martin Dirisamer, Ana Janićijević, Lamis Baydoun, Isabel Dapena, Gerrit R J Melles
PURPOSE: To evaluate the clinical outcome of 16 eyes undergoing Descemet membrane endothelial transfer (DMET). METHODS: In this retrospective cohort study, a consecutive series of 16 eyes from 16 patients was evaluated after subtotal detachment of the Descemet graft after a Descemet membrane endothelial keratoplasty procedure (n = 8) or intended DMET (n = 8) for either Fuchs endothelial dystrophy (n = 10) or bullous keratopathy (BK; n = 6). RESULTS: All 8 Descemet membrane endothelial keratoplasty procedures were complicated by subtotal detachment of the donor graft...
September 29, 2017: Cornea
https://www.readbyqxmd.com/read/28782549/a-review-of-the-evidence-for-in%C3%A2-vivo-corneal-endothelial-regeneration
#10
REVIEW
Bert Van den Bogerd, Sorcha Ní Dhubhghaill, Carina Koppen, Marie-José Tassignon, Nadia Zakaria
Human corneal endothelium has long been thought to be a nonmitotic cell layer with no endogenous reparative potential. Pathologies that damage endothelial function result in corneal decompensation and, if untreated, blindness. The mainstay of treatment involves partial or complete corneal replacement, amounting to 40% of all corneal transplants performed worldwide. We summarize the case reports describing complications postoperatively in the form of (sub)total graft detachment and those resulting in postoperative bare stroma...
August 4, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28754918/activation-of-tgf-%C3%AE-signaling-induces-cell-death-via-the-unfolded-protein-response-in-fuchs-endothelial-corneal-dystrophy
#11
Naoki Okumura, Keisuke Hashimoto, Miu Kitahara, Hirokazu Okuda, Emi Ueda, Kyoko Watanabe, Makiko Nakahara, Takahiko Sato, Shigeru Kinoshita, Theofilos Tourtas, Ursula Schlötzer-Schrehardt, Friedrich Kruse, Noriko Koizumi
Fuchs endothelial corneal dystrophy (FECD) is a slowly progressive bilateral disease of corneal endothelium in which accumulation of extracellular matrix (ECM) and loss of corneal endothelial cells (CECs) are phenotypic features. The corneal endothelium maintains corneal transparency by regulating water hydration; consequently, corneal endothelial dysfunction causes serious vision loss. The only therapy for corneal haziness due to corneal endothelial diseases, including FECD, is corneal transplantation using donor corneas, and no pharmaceutical treatment is available...
July 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28751984/corneal-backscatters-as-an-objective-index-for-assessing-fuchs-endothelial-corneal-dystrophy-a-pilot-study
#12
Hsueh-Yen Chu, Ching-Hsi Hsiao, Phil Yeong-Fong Chen, David Hui-Kang Ma, Chee-Jen Chang, Hsin-Yuan Tan
PURPOSE: To provide an objective, quantitative approach for monitoring Fuchs' endothelial corneal dystrophy (FECD), with Scheimpflug imaging. DESIGN: This is a retrospective case-control pilot study. METHODS: The study group consisted of 53 eyes in 27 patients diagnosed with FECD, with normal subjects paired as control. Main outcome measures were corneal thickness, morphological patterns on densitograms, and indices of corneal density including the average area density (mean AD) and the average ratio of Descemet's membrane density versus area density (DM/AD) in Pentacam Scheimpflug images...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28742617/simple-single-pass-technique-for-ultrathin-descemet-stripping-automated-endothelial-keratoplasty-a-pilot-study
#13
Maria E S Dimitry, Adam D Lewis, Fani Zacharaki, Manju Chandran, Deana Robson, Geeta Menon, Thomas R G Poole
PURPOSE: To assess intraoperative and postoperative graft thickness (GT) after donor deturgescence for ultrathin Descemet stripping automated endothelial keratoplasty and to evaluate visual outcomes, endothelial cell density, and patient satisfaction at 1 year. METHODS: Prospective interventional case series of patients with Fuchs endothelial dystrophy, Fuchs endothelial dystrophy and cataract, and pseudophakic bullous keratopathy (n = 12 grafts). The donor cornea was allowed to thin out by simple evaporation on an artificial anterior chamber, to the required precut thickness, before a single microkeratome pass...
October 2017: Cornea
https://www.readbyqxmd.com/read/28739420/long-term-visual-outcomes-comparing-descemet-stripping-automated-endothelial-keratoplasty-and-penetrating-keratoplasty
#14
COMPARATIVE STUDY
Matthias Fuest, Marcus Ang, Hla Myint Htoon, Donald Tan, Jodhbir S Mehta
PURPOSE: To compare 5-year visual acuity and refraction outcome in Descemet stripping automated endothelial keratoplasty (DSAEK) and penetrating keratoplasty (PK) for Fuchs endothelial dystrophy (FED) or bullous keratopathy (BK) in Asian eyes. DESIGN: Prospective interventional case series. METHODS: We analyzed 828 consecutive cases of DSAEK (423) or PK (405) for FED and BK from the Singapore Cornea Transplant Registry performed from 1991 to 2011...
October 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28731879/peripheral-endothelial-cell-count-is-a-predictor-of-disease-severity-in-advanced-fuchs-endothelial-corneal-dystrophy
#15
Zeba A Syed, Jennifer A Tran, Ula V Jurkunas
PURPOSE: In advanced Fuchs endothelial corneal dystrophy (FECD), central endothelial changes do not correlate with disease severity. The peripheral endothelial cell count (ECC) has not been studied as a marker of FECD severity. The goal of this study was to determine the relationship between the peripheral ECC and known clinical markers of FECD in advanced cases. METHODS: Patients with FECD examined between January 1, 2013, and September 1, 2016, by 1 cornea specialist were identified...
October 2017: Cornea
https://www.readbyqxmd.com/read/28726551/extracellular-matrix-and-integrin-expression-profiles-in-fuchs-endothelial-corneal-dystrophy-cells-and-tissue-model
#16
Benjamin Goyer, Mathieu Thériault, Sébastien P Gendron, Isabelle Brunette, Patrick J Rochette, Stéphanie Proulx
Primary corneal endothelial cell cultures and 3D engineered tissue models were used to study the aberrant deposition of extracellular matrix (ECM) in a vision impairing pathology known as Fuchs endothelial corneal dystrophy (FECD). Corneal endothelial cells (CEC) were isolated from excised Descemet membranes of patients with end-stage FECD. CEC isolated from healthy corneas served as controls. Microarray gene profiling was performed on post-confluent cultures of healthy and FECD cells. Protein expression analyses were conducted on tissue models that were engineered by seeding an endothelium on previously devitalized human stromal carriers...
July 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28726355/combined-cataract-dsek-dmek-changing-expectations
#17
REVIEW
Francis W Price, Marianne O Price
Endothelial keratoplasty (EK) has revolutionized corneal transplant surgery by providing rapid visual recovery and improved visual outcomes. In parts of the world with Fuchs endothelial dystrophy, many patients may present with both cataracts and corneal degeneration requiring surgery. Other forms of endothelial decompensation may also present with cataracts. The staging or combination of transplant surgery and cataract surgery depend on both the abilities of the surgeon and the surgical techniques being considered...
July 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28697678/ek-dlek-dsek-dmek-new-frontier-in-cornea-surgery
#18
Marianne O Price, Pankaj Gupta, Jonathan Lass, Francis W Price
Endothelial keratoplasty (EK) has revolutionized treatment of corneal endothelial dysfunction. Compared with penetrating keratoplasty (PK), EK provides faster and more reliable visual rehabilitation while maintaining the eye's structural integrity. The number of EK procedures is growing annually and surpassed PK in the United States in 2012. The most widely used iteration, Descemet stripping endothelial keratoplasty (DSEK), implants healthy donor endothelium, Descemet membrane, and posterior stroma. Descemet membrane endothelial keratoplasty (DMEK) eliminates the donor stromal layer...
September 15, 2017: Annual Review of Vision Science
https://www.readbyqxmd.com/read/28630424/characterization-of-slow-cycling-corneal-limbal-epithelial-cells-identifies-putative-stem-cell-markers
#19
R Sartaj, C Zhang, P Wan, Z Pasha, V Guaiquil, A Liu, J Liu, Y Luo, E Fuchs, M I Rosenblatt
In order to identify reliable markers of corneal epithelial stem cells, we employed an inducible transgenic "pulse-chase" murine model (K5Tta × TRE-H2BGFP) to localize, purify, and characterize slow cycling cells in the cornea. The retention of GFP labeling in slowly dividing cells allowed for localization of these cells to the corneal limbus and their subsequent purification by FACS. Transcriptome analysis from slow cycling cells identified differentially expressed genes when comparing to GFP(-) faster-dividing cells...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28608272/ctg18-1-repeat-expansion-may-reduce-tcf4-gene-expression-in-corneal-endothelial-cells-of-german-patients-with-fuchs-dystrophy
#20
Sabine Foja, Mirjam Luther, Katrin Hoffmann, Andreas Rupprecht, Claudia Gruenauer-Kloevekorn
PURPOSE: It was the aim of this investigation to elucidate the functional effects of CTG18.1 trinucleotide repeat expansion and the polymorphism rs613872 in the transcription factor 4 (TCF4) in corneas of patients affected by Fuchs' endothelial corneal dystrophy (FECD). METHODS: Sixty-one unrelated German patients with FECD and 113 unaffected controls were investigated and genotyped for the CTG18.1 locus by triplet primed PCR (TP-PCR) and the rs613872 polymorphism via Sanger sequencing and by employing genomic DNA from peripheral blood leucocytes...
August 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
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