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https://www.readbyqxmd.com/read/27922068/changes-in-retinal-nerve-fiber-layer-thickness-after-multiple-injections-of-novel-vegf-decoy-receptor-conbercept-for-various-retinal-diseases
#1
Zhihua Zhang, Xiaolu Yang, Huiyi Jin, Yuan Qu, Yuan Zhang, Kun Liu, Xun Xu
Conbercept is a recombinant fusion protein with high affinity for all vascular endothelial growth factor isoforms and placental growth factor. The repeated intravitreal injection of conbercept may cause intraocular pressure (IOP) fluctuations and long-term suppression of neurotrophic cytokines, which could lead to retinal nerve fiber layer (RNFL) damage. This retrospective fellow-eye controlled study included 98 eyes of 49 patients. The changes in IOP and RNFL thickness as well as the correlation between RNFL changes and associated factors were evaluated...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27920429/nitric-oxide-no-mediates-the-inhibition-of-form-deprivation-myopia-by-atropine-in-chicks
#2
Brittany J Carr, William K Stell
Myopia is the most common childhood refractive disorder. Atropine inhibits myopia progression, but its mechanism is unknown. Here, we show that myopia-prevention by atropine requires production of nitric oxide (NO). Form-deprivation myopia (FDM) was induced in week-old chicks by diffusers over the right eye (OD); the left eye (OS) remained ungoggled. On post-goggling days 1, 3, and 5, OD received intravitreally 20 µL of phosphate-buffered saline (vehicle), or vehicle plus: NO source: L-arginine (L-Arg, 60-6,000 nmol) or sodium nitroprusside (SNP, 10-1,000 nmol); atropine (240 nmol); NO inhibitors: L-NIO or L-NMMA (6 nmol); negative controls: D-Arg (10 µmol) or D-NMMA (6 nmol); or atropine plus L-NIO, L-NMMA, or D-NMMA; OS received vehicle...
December 2016: Scientific Reports
https://www.readbyqxmd.com/read/27918830/the-antiangiogenic-effects-of-gold-nanoparticles-on-experimental-choroidal-neovascularization-in-mice
#3
Young-Jung Roh, Chang Rae Rho, Won-Kyung Cho, Seungbum Kang
Purpose: The purpose of this study was to evaluate the antiangiogenic effect of gold nanoparticles (AuNPs) on experimental choroidal neovascularization (CNV) in mice. Methods: Choroidal neovascularization was induced by rupturing the Bruch's membrane using laser photocoagulation in C57BL/6 mice. The following day, intravitreal injections of AuNPs were administered. The control group received PBS injection of the same volume. Two weeks after laser injury, CNV lesions were evaluated by examination of choroidal flat-mounts using fluorescein-labeled dextran and immunofluorescence staining with isolectin B4...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27917946/basigin-can-be-a-therapeutic-target-to-restore-the-retinal-vascular-barrier-function-in-the-mouse-model-of-diabetic-retinopathy
#4
Mitsuru Arima, Dan Cui, Tokuhiro Kimura, Koh-Hei Sonoda, Tatsuro Ishibashi, Satoshi Matsuda, Eiji Ikeda
Despite the advance in medical technology, diabetic retinopathy (DR) is still an intractable disease which leads to the damage of retinal cells and finally the visual loss. Impairment of retinal vascular barrier triggered by an admixture of multiple inflammatory cytokines is a core of pathophysiology of DR. Therefore, the molecules involved commonly in multiple cytokines-induced impairment of vascular barrier would be the targets of curative treatment of DR. Here, we demonstrate that basigin, a transmembrane molecule expressed in neural barrier-forming endothelial cells, is the molecule essential for vascular barrier impairment which is shared by various triggers including VEGF, TNFα and IL-1β...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27915343/intravitreal-dexamethasone-implant-for-the-treatment-of-postoperative-macular-edema
#5
André Klamann, Katharina Böttcher, Philipp Ackermann, Gerd Geerling, Marc Schargus, Rainer Guthoff
INTRODUCTION: Macular edema after cataract surgery (Irvine-Gass syndrome) or pars plana vitrectomy is a postoperative complication which can lead to permanent visual loss. Increased inflammatory substances, such as prostaglandins and cytokines, are discussed to be causative. Currently, there are no evidence-based guidelines for the treatment of postoperative macular edema. Intravitreal dexamethasone (DEX) could be effective by its anti-inflammatory effect. We examined the functional and morphological results of treatment with 0...
December 3, 2016: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/27913869/ranibizumab-for-vascularized-pigment-epithelial-detachment-1-year-anatomic-and-functional-results
#6
Olivier Chevreaud, Hassiba Oubraham, Salomon Y Cohen, Camille Jung, Rocio Blanco-Garavito, Farah Gherdaoui, Eric H Souied
PURPOSE: To assess the anatomical and functional efficacy of ranibizumab on vascularized pigment epithelial detachment (V-PED) secondary to neovascular age-related macular degeneration (nAMD). METHODS: One hundred and nine patients (116 eyes) were retrospectively selected from medical records of 2097 patients who benefited from intravitreal injection between January 2011 and June 2013 in a tertiary-care University-based Department of Ophthalmology. Inclusion criteria were: nAMD, treatment-naive eyes, presence of V-PED higher than 250 μm, intravitreal ranibizumab with a loading phase, followed by a pro-re-nata regimen, and 1-year follow-up...
December 3, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27913439/retinitis-pigmentosa-associated-cystoid-macular-oedema-pathogenesis-and-avenues-of-intervention
#7
REVIEW
S Strong, G Liew, M Michaelides
Hereditary retinal diseases are now the leading cause of blindness certification in the working age population (age 16-64 years) in England and Wales, of which retinitis pigmentosa (RP) is the most common disorder. RP may be complicated by cystoid macular oedema (CMO), causing a reduction of central vision. The underlying pathogenesis of RP-associated CMO (RP-CMO) remains uncertain, however, several mechanisms have been proposed, including: (1) breakdown of the blood-retinal barrier, (2) failure (or dysfunction) of the pumping mechanism in the retinal pigment epithelial, (3) Müller cell oedema and dysfunction, (4) antiretinal antibodies and (5) vitreous traction...
December 2, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27911446/treatment-patterns-of-ranibizumab-intravitreal-injection-and-dexamethasone-intravitreal-implant-for-retinal-vein-occlusion-in-the-usa
#8
S Nghiem-Buffet, S Baillif, S Regnier, A Skelly, N Yu, A Sodi
PurposeRanibizumab, an anti-vascular endothelial growth factor, and dexamethasone, a corticosteroid, have been shown to be effective in treating macular oedema secondary to retinal vein occlusion (RVO) (central RVO (CRVO) and branch RVO (BRVO)). Their real-world usage, however, has yet to be compared. We therefore evaluated ophthalmology visits for both drugs using US patient-level data.MethodsThe IMS Health Real-World Data Medical Claims database was used to identify treatment-naive patients receiving ranibizumab intravitreal injections or dexamethasone intravitreal implants between June 2010 and February 2014 who had 12 months of follow-up data...
December 2, 2016: Eye
https://www.readbyqxmd.com/read/27908408/protective-effect-of-magnesium-acetyltaurate-against-nmda-induced-retinal-damage-involves-restoration-of-minerals-and-trace-elements-homeostasis
#9
Azliana Jusnida Ahmad Jafri, Natasha Najwa Nor Arfuzir, Lidawani Lambuk, Igor Iezhitsa, Renu Agarwal, Puneet Agarwal, Norhafiza Razali, Anna Krasilnikova, Maria Kharitonova, Vasily Demidov, Evgeny Serebryansky, Anatoly Skalny, Alexander Spasov, Ahmad Pauzi Md Yusof, Nafeeza Mohd Ismail
Glutamate-mediated excitotoxicity involving N-methyl-d-aspartate (NMDA) receptors has been recognized as a final common outcome in pathological conditions involving death of retinal ganglion cells (RGCs). Overstimulation of NMDA receptors results in influx of calcium (Ca) and sodium (Na) ions and efflux of potassium (K). NMDA receptors are blocked by magnesium (Mg). Such changes due to NMDA overstimulation are also associated with not only the altered levels of minerals but also that of trace elements and redox status...
January 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/27906070/subretinal-adipose-tissue-derived-mesenchymal-stem-cell-implantation-in-advanced-stage-retinitis-pigmentosa-a-phase-i-clinical-safety-study
#10
Ayse Oner, Z Burcin Gonen, Neslihan Sinim, Mustafa Cetin, Yusuf Ozkul
BACKGROUND: This prospective clinical case series aimed to investigate the safety of subretinal adipose tissue-derived mesenchymal stem cell (ADMSC) implantation in advanced stage retinitis pigmentosa (RP). METHODS: This study included 11 patients with end-stage RP who received subretinal implantation of ADMSCs. All patients had a total visual field defect and five of them only had light perception. The best corrected visual acuity (BCVA) in the study was 20/2000...
December 1, 2016: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/27905340/effect-of-prophylactic-intraocular-pressure-lowering-medication-brinzolamide-on-intraocular-pressure-after-ranibizumab-intravitreal-injection-a-case-control-study
#11
Shuang Song, Xiao-Bing Yu, Hong Dai
PURPOSE: To observe the effect of prophylactic intraocular pressure (IOP)-lowering medication (brinzolamide) on IOP after ranibizumab intravitreal injections (IVIs). MATERIALS AND METHODS: This prospective case-control study included 352 eyes from 352 patients (1 eye per patient) who were treated with ranibizumab intravitreal injection and divided randomly into two groups. Two hundred and three patients in control group only received the ranibizumab IVI, but 149 patients in case group received one drop of prophylactic intraocular brinzolamide preinjection...
October 2016: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/27904503/stem-cell-ophthalmology-treatment-study-scots-bone-marrow-derived-stem-cells-in-the-treatment-of-leber-s-hereditary-optic-neuropathy
#12
Jeffrey N Weiss, Steven Levy, Susan C Benes
The Stem Cell Ophthalmology Treatment Study (SCOTS) is currently the largest-scale stem cell ophthalmology trial registered at ClinicalTrials.gov (identifier: NCT01920867). SCOTS utilizes autologous bone marrow-derived stem cells (BMSCs) to treat optic nerve and retinal diseases. Treatment approaches include a combination of retrobulbar, subtenon, intravitreal, intra-optic nerve, subretinal, and intravenous injection of autologous BMSCs according to the nature of the disease, the degree of visual loss, and any risk factors related to the treatments...
October 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27903073/comparison-between-early-or-late-intravitreal-injection-of-dexamethasone-implant-in-branch-brvo-or-central-crvo-retinal-vein-occlusion-six-months-follow-up
#13
Fernanda Pacella, Giuseppe La Torre, Stefania Basili, Monica Autolitano, Antonella Pascarella, Tommaso Lenzi, Elena Pacella
PURPOSE: The purpose of this study was to compare early and late injections of intravitreal dexamethasone implant in patients affected by central retinal vein occlusion (CRVO) or branch retinal vein occlusion (BRVO) with a six-month follow-up. We assessed whether an earlier treatment start (within 7 days from diagnosis) could be more beneficial than a delayed (or late) treatment start (after 7 days). MATERIALS AND METHODS: The study included 81 patients (81 eyes) affected by retinal vein occlusion...
November 30, 2016: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/27902539/cystoid-macular-edema-and-cystoid-macular-degeneration-as-a-result-of-multiple-pathogenic-factors-in-the-setting-of-central-serous-chorioretinopathy
#14
Polina Astroz, Chandrakumar Balaratnasingam, Lawrence A Yannuzzi
PURPOSE: To report the pathogenic factors that account for cystoid macular edema and cystoid macular degeneration in chronic central serous chorioretinopathy (CSC). METHODS: The clinical course and multimodal imaging findings, including fundus color photography, fundus autofluorescence, spectral-domain optical coherence tomography, and fluorescein angiography, of one eye with cystoid macular edema due to chronic CSC was documented. RESULTS: A 44-year old woman with a history of chronic CSC presented with progressive visual decline in the right eye...
November 29, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/27898414/outcomes-after-a-1-year-treatment-with-ranibizumab-for-diabetic-macular-edema-in-a-clinical-setting
#15
Linda Hrarat, Franck Fajnkuchen, Marouane Boubaya, Vincent Lévy, Valérie Sarda, Typhaine Grenet, Sylvia Nghiem-Buffet, Gilles Chaine, Audrey Giocanti-Auregan
PURPOSE: The aim of this study was to assess the efficacy and safety of ranibizumab in patients with diabetic macular edema (DME). METHODS: We conducted a retrospective analysis of consecutive patients with vision loss due to DME who were treated with ranibizumab. All patients received a loading dose of 3 monthly injections followed by re-treatments on an as-needed basis. The primary endpoint was the change in best-corrected visual acuity (BCVA) at 12 months. Secondary endpoints were the change in central retinal thickness (CRT) and the number of intravitreal injections (IVI) at 12 months...
November 30, 2016: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/27897120/dropless-cataract-surgery-an-overview
#16
Richard L Lindstrom, M Stewart Galloway, Andrzej Grzybowski, Jeffrey T Liegner
Risk reduction and the attainment of good outcomes in contemporary cataract surgery depend in part on patient compliance with a postoperative regimen of topical eye drops. Topical drops are expensive and challenging to instill properly for patients. The consequences of noncompliance or poor compliance can be significant for the patient (in the case of a complication) and for society (in the case of development of antibiotic resistance). For all of these reasons, new approaches that reduce the need for topical therapy are beginning to emerge, including intracameral injection, sustained or slow-release drug delivery mechanisms, and the recently introduced "Dropless cataract surgery," which involves intravitreal injection of single-use, compounded combination of antibiotics and corticosteroids...
November 29, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27894518/radiation-maculopathy-treated-with-intravitreal-bevacizumab
#17
J L Sánchez-Vicente, A Muñoz-Morales, M P Galván-Carrasco, A Castilla-Lázpita, C Vital-Berral, A Alfaro-Juárez, T Rueda-Rueda
CASE REPORT: A 47 year-old woman with a choroidal melanoma developed a macular oedema secondary to radiation therapy 75 months after brachytherapy plaque. The patient received 3 intravitreal Bevacizumab injections. DISCUSSION: The patient had a good response to bevacizumab treatment. In fact, there was a reduction in the macular oedema measured by optical coherence tomography (OCT) scan, as well as an improvement in best corrected visual acuity. There was no recurrence of macular oedema, and visual acuity remained stable after 3-years follow-up...
November 25, 2016: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/27893623/efficacy-and-safety-of-intravitreal-conbercept-injections-in-macular-edema-secondary-to-retinal-vein-occlusion
#18
Zuhua Sun, Haiying Zhou, Bing Lin, Xuan Jiao, Yingdong Luo, Feng Zhang, Shanshan Tao, Quan Wu, Zunhong Ke, Xiaoling Liu
PURPOSE: To assess the efficacy and safety of intravitreal conbercept injections in patients with macular edema secondary to retinal vein occlusion (RVO). METHODS: A prospective, Phase II clinical trial was performed on 60 patients with macular edema secondary to RVO. Thirty patients had branch RVO (BRVO) and 30 had central RVO (CRVO). Each patient received intravitreal injections of conbercept monthly up to 3 months, followed by monthly evaluation and injection pro re nata to Month 9...
November 23, 2016: Retina
https://www.readbyqxmd.com/read/27892746/choroidal-neovascularization-associated-with-multiple-evanescent-white-dot-syndrome-treated-with-intravitreal-ranibizumab
#19
Maurizio Battaglia Parodi, Pierluigi Iacono, Ilaria Zucchiatti, Francesco Bandello
PURPOSE: To describe the clinical outcomes of intravitreal ranibizumab treatment for subfoveal choroidal neovascularization (CNV) associated with multiple evanescent white dot syndrome (MEWDS). METHODS: This is a prospective, interventional, case series. All recruited patients underwent a baseline intravitreal ranibizumab injection and were monitored monthly over a 12-month follow-up, following a pro-re-nata regimen. RESULTS: Four patients (four eyes) were included in the study...
November 28, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27890437/trends-of-anti-vascular-endothelial-growth-factor-use-in-ophthalmology-among-privately-insured-and-medicare-advantage-patients
#20
Ravi Parikh, Joseph S Ross, Lindsey R Sangaralingham, Ron A Adelman, Nilay D Shah, Andrew J Barkmeier
PURPOSE: To characterize the first 10 years of intravitreal anti-vascular endothelial growth factor (VEGF) medication use for ophthalmic disease, including bevacizumab, ranibizumab, and aflibercept. DESIGN: A retrospective cohort study using administrative claims data from January 1, 2006 to December 31, 2015. SUBJECTS: Total of 124 835 patients 18 years of age or over in the United States. METHODS: OptumLabs Data Warehouse, which includes administrative claims data for over 100 million commercially insured and Medicare Advantage individuals, was used to identify patients receiving intravitreal anti-VEGF injections based on Current Procedural Terminology codes...
November 24, 2016: Ophthalmology
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