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Ophthalmic Research

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https://www.readbyqxmd.com/read/28099966/involvement-of-xbp1s-in-blue-light-induced-a2e-containing-retinal-pigment-epithelium-cell-death
#1
Bing Lu, Pengfei Zhang, Minwen Zhou, Wenqiu Wang, Qing Gu, Jingyang Feng, Xueting Luo, Xiangjun Sun, Fenghua Wang, Xiaodong Sun
PURPOSE: Retinal pigment epithelium (RPE) cell dysfunction is essential to the development of retinal degenerative disease. This study was designed to investigate how spliced X-box-binding protein 1 (XBP1s) regulates different modes of RPE cell death in vitro. METHODS: Human ARPE19 cells were incubated with 25 μM N-retinylidene-N-retinylethanolamine (A2E) and irradiated with blue light. Expressions of glucose-regulated protein 78 (GRP78) and XBP1s were detected by real-time quantitative PCR and Western blot...
January 19, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28076855/microrna-126-reduces-blood-retina-barrier-breakdown-via-the-regulation-of-vcam-1-and-bcl2l11-in-ischemic-retinopathy
#2
Xia Bai, Junpeng Luo, Xiaofeng Zhang, Jingjing Han, Zhaoyue Wang, Jingcheng Miao, Yanyan Bai
To evaluate the role of microRNA-126 (miR-126) in maintaining the integrity of the blood-retina barrier (BRB), we established a mouse model of oxygen-induced retinopathy (OIR) and measured the retinal levels of miR-126 using recombinant plasmid pCMV-MIR or pCMV-MIR-126 intravitreal injections. We also detected VCAM-1 and BCL2L11 levels. Retinal vaso-obliteration, VCAM-1 localization on retinal endothelial cells, the blood-retina vascular permeability or albumin leakage in retinas, TUNEL histology, Evans blue assays, or Western blotting for detecting albumin or tight junction levels in the retina was performed...
January 12, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28076854/open-angle-glaucoma-drug-development-pipeline-during-the-last-20-years-1995-2015
#3
André Vicente, Sylvie Prud'homme, Joana Ferreira, Luís Abegão Pinto, Ingeborg Stalmans
OBJECTIVES: To analyse drug development for open-angle glaucoma during the last 20 years. METHODS: Research was performed by referring to clinical trials registered at the International Clinical Trials Registry Platform (ICTRP). A search for the condition "open-angle glaucoma" with the intervention "drug" was performed. We included trials registered from 01/01/1995 to 01/01/2015, only involving studies in phases 1, 2, and 3. Only studies resorting to novel treatment strategies (either novel drugs or yet-untested fixed associations of approved medication) were considered...
January 12, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28073110/relationship-between-the-pathogenesis-of-glaucoma-and-mirna
#4
Ruru Guo, Wencui Shen, Chang Su, Shaoyun Jiang, Jiantao Wang
Small RNA (microRNA or miRNA) is a kind of small noncoding single-stranded RNA that regulates complementary mRNA at the posttranscriptional level in eukaryotic organisms. As important regulatory factors, miRNAs play an important role in the occurrence and development of glaucoma and widely participate in regulating biological processes of glaucoma-related genes. This article reviews the connection between the aqueous humor, trabecular meshwork, the apoptosis of retinal ganglion cells, and miRNA.
January 11, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28068662/evaluation-of-the-macular-ganglion-cell-inner-plexiform-layer-and-the-circumpapillary-retinal-nerve-fiber-layer-in-early-to-severe-stages-of-glaucoma-correlation-with-central-visual-function-and-visual-field-indexes
#5
Maria Pilar Bambo, Noemi Güerri, Blanca Ferrandez, Beatriz Cameo, Isabel Fuertes, Vicente Polo, Elena Garcia-Martin
OBJECTIVES: To compare the circumpapillary retinal nerve fiber layer (cpRNFL) and the macular ganglion cell-inner plexiform layer (GCIPL) in glaucoma patients at different disease stages and to evaluate correlations between optical coherence tomography (OCT) parameters with central visual function and visual field (VF) indexes. PATIENTS AND METHODS: One hundred forty patients were included in this prospective cross-sectional study. Subjects diagnosed with chronic open-angle glaucoma and 20/40 or better vision were recruited and classified as having early, moderate, or severe VF defects based on Hodapp-Parrish-Anderson criteria...
January 10, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28052266/development-of-a-normative-database-for-multifocal-electroretinography-in-the-context-of-a-multicenter-clinical-trial
#6
Sílvia Simão, Miguel Ângelo Costa, Jennifer K Sun, José Cunha-Vaz, Rafael Simó
PURPOSE: The aim of this study is to present the largest normative database using multifocal electroretinography (mfERG) in the context of a multicenter clinical trial. METHODS: This investigational study included 156 eyes from 78 Caucasian subjects aged 45-70 years without known ophthalmic disease or diabetes mellitus; the subjects were recruited from 11 clinical sites in the setting of the EUROCONDOR project. Standardized mfERG acquisition (103 hexagons per eye) was established based on the International Society of Clinical Electrophysiology in Vision...
January 5, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27992872/long-term-anatomical-and-functional-outcomes-after-combined-cataract-and-idiopathic-epiretinal-membrane-surgery
#7
Yann Kauffmann, Jean-Christophe Ramel, Rodica Isaico, Aurélie De Lazzer, Alain M Bron, Catherine Creuzot-Garcher
PURPOSE: To describe the 2-year functional and anatomical outcomes in patients operated on for combined cataract and idiopathic epiretinal membrane (ERM) and to study the relationship between best-corrected visual acuity (BCVA) and spectral-domain optical coherence tomography (SD-OCT) throughout the follow-up. METHODS: This retrospective observational case series included 72 eyes operated on for combined cataract and idiopathic ERM. They were followed with clinical and SD-OCT examinations preoperatively and 1, 6, 12, and 24 months after surgery...
December 20, 2016: Ophthalmic Research
https://www.readbyqxmd.com/read/27941330/hyperosmolarity-and-benzalkonium-chloride-differently-stimulate-inflammatory-markers-in-conjunctiva-derived-epithelial-cells-in-vitro
#8
Elise Warcoin, Chloé Clouzeau, Christophe Roubeix, Anne-Laure Raveu, David Godefroy, Luisa Riancho, Christophe Baudouin, Françoise Brignole-Baudouin
Tear hyperosmolarity is known to cause ocular surface inflammation in dry eye syndrome. Benzalkonium chloride (BAK), an eyedrop preservative, is known to induce dry eye in long-term-treated patients. Analyzing the modulation of the proinflammatory potential of hyperosmolarity in the presence of BAK on the conjunctiva could give new insights into the effect of this preservative on the disease. In a hyperosmolar model on a conjunctiva-derived cell line, and in the presence of BAK, we evaluated key inflammatory markers [CCL2, IL-8, IL-6, macrophage migration inhibitory factor (MIF) and intercellular adhesion molecule (ICAM)-1] as well as the osmoprotectant element nuclear factor of activated T cells (NFAT)5 using ELISA, RT-qPCR or immunofluorescence staining...
December 10, 2016: Ophthalmic Research
https://www.readbyqxmd.com/read/27880954/the-protective-effect-of-brown-gray-and-blue-tinted-lenses-against-blue-led-light-induced-cell-death-in-a2e-laden-human-retinal-pigment-epithelial-cells
#9
Sang-Il Park, Young Pyo Jang
A2E-laden ARPE-19 cells were exposed to a blue light to induce cytotoxicity, in order to investigate the protective effects of various tinted ophthalmic lenses against photo-induced cytotoxicity in human retinal pigment epithelial (RPE) cells laden with A2E, known to be among the etiologies of age-related macular degeneration (AMD). Different-colored tinted lenses with varying levels of tint and different filtering characteristics, such as polarized, blue-cut, and photochromatic lenses, were placed over the cells, and the protective efficacies thereof were evaluated by lactate dehydrogenase assay...
November 24, 2016: Ophthalmic Research
https://www.readbyqxmd.com/read/27832661/identifying-predictors-of-anti-vegf-treatment-response-in-patients-with-neovascular-age-related-macular-degeneration-through-discriminant-and-principal-component-analysis
#10
Frank G Holz, Ramin Tadayoni, Stephen Beatty, Alan R Berger, Matteo G Cereda, Philip Hykin, Carel B Hoyng, Kim Wittrup-Jensen, Andreas Altemark, Jonas Nilsson, Kun Kim, Sobha Sivaprasad
OBJECTIVE: AURA was an observational study that monitored visual acuity outcomes following ranibizumab use in neovascular age-related macular degeneration patients over 2 years. The aim of this analysis was to identify factors that were predictive of visual acuity outcomes in AURA. METHODS: The correlation between the baseline characteristics, the use of resources and the visual acuity outcomes in AURA was explored using principal component analysis (PCA) and partial least-squares-discriminant analysis (PLS-DA)...
November 11, 2016: Ophthalmic Research
https://www.readbyqxmd.com/read/27902987/sircova-oftared-joined-congress-abstracts-valencia-spain-june-30-july-2-2016-abstracts
#11
(no author information available yet)
No abstract text is available yet for this article.
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27744444/pretreatment-of-rpe-cells-with-lutein-can-mitigate-bevacizumab-induced-increases-in-angiogenin-and-bfgf
#12
Natàlia Vilà, Jacqueline Coblentz, Carlos Moreira-Neto, Vasco Bravo-Filho, Pablo Zoroquiain, Miguel N Burnier
PURPOSE: To determine whether pretreatment of retinal pigmented epithelial (RPE) cells with lutein can affect the response of cells to bevacizumab therapy. METHODS: One human RPE cell line (ARPE-19) was used for all experiments. The cells were treated with lutein in different concentrations (0.01, 0.1, 1, 10, or 100 μg/ml). After 24 h, all plates were treated with bevacizumab (0.25 mg/ml). Media were harvested 24 h later for sandwich ELISA-based angiogenesis arrays...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27732974/risk-prediction-model-for-progression-of-age-related-macular-degeneration
#13
Ko Un Shin, Su Jeong Song, Jeong Hun Bae, Mi Yeon Lee
AIMS: The aim of this paper was to develop a risk prediction model for the progression of age-related macular degeneration (AMD) in Koreans using systemic and environmental factors. METHODS: The study sample included 10,890 individuals 50 years of age or older; 318 (2.92%) presented with early AMD findings in baseline examinations. Re-examinations were performed in 157 (49.37%) who were followed up for 4.4 years. The multivariate analysis of covariates included demographic and environmental factors...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27723657/recent-developments-in-the-diagnosis-and-treatment-of-ocular-toxoplasmosis
#14
Cem Ozgonul, Cagri Giray Besirli
Ocular toxoplasmosis, a chorioretinal infection with Toxoplasma gondii, is the most common etiology of posterior uveitis in many countries. Accurate diagnosis depends heavily on the characteristic clinical features of this disease, but atypical presentations, especially in immunocompromised patients, may create diagnostic challenges and lead to misdiagnosis and inappropriate treatment. Molecular biology techniques to diagnose ocular toxoplasmosis have been available for many years and are now accessible as standard laboratory tests in many countries...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27694751/non-responders-to-intravitreal-ranibizumab-in-subfoveal-choroidal-neovascularization-secondary-to-age-related-macular-degeneration
#15
Pierluigi Iacono, Maurizio Battaglia Parodi, Francesco Bandello
AIM: Evaluation of the proportion of patients affected by subfoveal choroidal neovascularization secondary to age-related macular degeneration who are non-respondent to intravitreal ranibizumab injections (IVRI). METHODS: Patients received 3 monthly IVRI, with monthly retreatments, in accordance with a pro re nata scheme (fluid on optical coherence tomography, leakage on fluorescein angiography, new haemorrhages). Non-responders were classified as follows: functional non-responder (best-corrected visual acuity worsening by a minimum of 2 ETDRS lines); anatomical non-responder (central foveal thickness not decreasing by at least 10% compared with baseline value); complete non-responder (both anatomical and functional non-responder criteria apply)...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27627204/photoreceptor-integrity-predicts-response-to-anti-vegf-treatment
#16
Asaf Achiron, Ayana Kydyrbaeva, Vitaly Man, Oded Lagstein, Zvia Burgansky, Oren Blumenfeld, Asaf Bar, Elisha Bartov
PURPOSE: Assessing changes in foveal photoreceptor microstructure (FPM) following intravitreal anti-VEGF treatment may serve as a prognostic marker in patients with macular edema (ME). METHODS: Sixteen eyes belonging to newly diagnosed patients with ME were included in this prospective longitudinal study. FPM integrity was evaluated at baseline and at the end of a series of anti-VEGF injections. RESULTS: Treatment led to a significant improvement in mean visual acuity (VA) and central macular thickness...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27424310/anatomical-and-functional-changes-in-the-coexistence-of-vitreomacular-traction-and-epiretinal-membrane-a-spectral-domain-optical-coherence-tomography-study
#17
Irini Chatziralli, George Theodossiadis, Ioannis Datseris, Efstratios Parikakis, Panagiotis Theodossiadis
PURPOSE: The purpose of this study was to evaluate the anatomical and functional findings in patients with vitreomacular traction (VMT) combined with epiretinal membrane (ERM) in the same eye. METHODS: In this retrospective, cross-sectional study, we studied 65 patients with VMT and ERM. In 36 of them, ERM/VMT had a 'unified' appearance (group Ι) but in 29, VMT and ERM coexisted without an interrelationship (group ΙΙ). All patients were examined with spectral-domain optical coherence tomography (SD-OCT)...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27404571/risk-of-ophthalmic-adverse-effects-in-patients-treated-with-mek-inhibitors-a-systematic-review-and-meta-analysis
#18
Carlos Alves, Inês Ribeiro, Ana Penedones, Diogo Mendes, Francisco Batel Marques
OBJECTIVES: This meta-analysis aims to evaluate the risk of ophthalmic adverse effects associated with MEK inhibitors. METHODS: A literature search was conducted in PubMed and the Cochrane Library to identify randomized clinical trials (RCTs) which have been designed to evaluate the efficacy and safety of MEK inhibitors. Overall risk of ophthalmic adverse effects, chorioretinopathy, retinal detachment, blurred vision, uveitis, and eye haemorrhage were the assessed outcomes...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27388749/ciliary-tissue-transplantation-in-the-rabbit-eye-does-the-localization-of-the-graft-affect-survival
#19
Hülya Yazıcı, Gökhan Gürelik, Fulya Yaylacıoğlu Tuncay, Pınar Uyar Göçün
PURPOSE: To examine whether ciliary body transplantation is applicable, the graft is viable and the localization of the graft material affects graft survival. METHODS: Fifteen female New Zealand white rabbits were used. Three of them were used as donors, and a ciliary body graft was prepared from their enucleated eyes. There are two groups in the study according to the localization of the ciliary body graft in the anterior chamber. The graft was placed on the iris surface close to the pupil margin in group 1 and adjacent to the anterior chamber angle in group 2...
2017: Ophthalmic Research
https://www.readbyqxmd.com/read/27764824/intra-and-inter-rater-agreement-of-anterior-lamina-cribrosa-depth-measurements-using-enhanced-depth-imaging-optical-coherence-tomography
#20
Inês Leal, David Cordeiro Sousa, Filomena Pinto, Carlos Marques-Neves, Luís Abegão Pinto
PURPOSE: To determine intra- and inter-rater agreement of anterior lamina cribrosa depth (ALCD) manual measurements using enhanced-depth imaging optical coherence tomography (EDI-OCT). METHODS: Observational study. EDI-OCT of the optic nerve head was performed in healthy subjects. ALCD was defined as the perpendicular distance between the line connecting both edges of Bruch's membrane opening and the anterior border of the lamina cribrosa (LC), at the maximum depth point...
October 21, 2016: Ophthalmic Research
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