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age-related macular degeneration

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https://www.readbyqxmd.com/read/27932477/moss-produced-glycosylation-optimized-human-factor-h-for-therapeutic-application-in-complement-disorders
#1
Stefan Michelfelder, Juliana Parsons, Lennard L Bohlender, Sebastian N W Hoernstein, Holger Niederkrüger, Andreas Busch, Nicola Krieghoff, Jonas Koch, Benjamin Fode, Andreas Schaaf, Thomas Frischmuth, Martin Pohl, Peter F Zipfel, Ralf Reski, Eva L Decker, Karsten Häffner
Genetic defects in complement regulatory proteins can lead to severe renal diseases, including atypical hemolytic uremic syndrome and C3 glomerulopathies, and age-related macular degeneration. The majority of the mutations found in patients with these diseases affect the glycoprotein complement factor H, the main regulator of the alternative pathway of complement activation. Therapeutic options are limited, and novel treatments, specifically those targeting alternative pathway activation, are highly desirable...
December 8, 2016: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/27929753/generation-and-characterization-of-abbv642-a-dual-variable-domain-immunoglobulin-molecule-dvd-ig-that-potently-neutralizes-vegf-and-pdgf-bb-and-is-designed-for-the-treatment-of-exudative-age-related-macular-degeneration
#2
Kun Ding, Lucia Eaton, Diana Bowley, Matthew Rieser, Qing Chang, Maria C Harris, Anca Clabbers, Feng Dong, Jikui Shen, Sean F Hackett, Debra S Touw, Jacqueline Bixby, Suju Zhong, Lorenzo Benatuil, Sahana Bose, Christine Grinnell, Gregory M Preston, Ramesh Iyer, Ramkrishna Sadhukhan, Susan Marchie, Gary Overmeyer, Tariq Ghayur, Deborah A van Riet, Shibo Tang, Peter A Campochario, Jijie Gu
Exudative age-related macular degeneration (AMD) is the most common cause of moderate and severe vision loss in developed countries. Intraocular injections of vascular endothelial growth factor (VEGF or VEGF-A)-neutralizing proteins provide substantial benefit, but frequent, long-term injections are needed. In addition, many patients experience initial visual gains that are ultimately lost due to subretinal fibrosis. Preclinical studies and early phase clinical trials suggest that combined suppression of VEGF and platelet-derived growth factor-BB (PDGF-BB) provides better outcomes than suppression of VEGF alone, due to more frequent regression of neovascularization (NV) and suppression of subretinal fibrosis...
December 8, 2016: MAbs
https://www.readbyqxmd.com/read/27928964/hot-topics-in-pharmacogenetics-of-age-related-macular-degeneration
#3
Stephen G Schwartz, Milam A Brantley, Jaclyn L Kovach, Andrzej Grzybowski
Age-related macular degeneration (AMD) is a leading cause of irreversible visual loss and is primarily treated with nutritional supplementation as well as with anti-vascular endothelial growth factor (VEGF) agents for certain patients with neovascular disease. AMD is a complex disease with both genetic and environmental risk factors. In addition, treatment outcomes from nutritional supplementation and anti-VEGF agents vary considerably. Therefore, it is reasonable to suspect that there may be pharmacogenetic influences on these treatments...
December 8, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27928888/self-care-tools-to-treat-depressive-symptoms-in-patients-with-age-related-eye-disease-a-randomized-controlled-clinical-trial
#4
Hortence Kamga, Jane McCusker, Mark Yaffe, Maida Sewitch, Tamara Sussman, Erin Strumpf, Sébastien Olivier, Walter Wittich, Solmaz Moghadaszadeh, Ellen E Freeman
BACKGROUND: Depression is very common in people with age-related eye disease. Our goal was to determine if self-care tools plus limited telephone support could reduce depressive symptoms in patients with age-related macular degeneration (AMD) or diabetic retinopathy (DR). DESIGN: A single-blind randomized controlled clinical trial was conducted at Maisonneuve-Rosemont Hospital in Montreal, Canada. PARTICIPANTS: Eighty participants were recruited METHODS: To be eligible, participants must have had either late stage AMD or DR, at least mild depressive symptoms, and visual acuity better than 20/200...
December 7, 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/27928444/the-remote-effects-of-intravitreal-anti-vegf-therapy
#5
Balta F, Merticariu M, Taban C, Neculau G, Merticariu A, Muresanu D, Badescu D, Jinga V
Objective: To study the effects of intravitreal anti-Vascular Endothelial Growth Factor (VEGF) therapy with Avastin for wet Age-Related Macular Degeneration (AMD) on Benign Prostatic Hyperplasia (BPH)-related symptoms. Methods: An exploratory trial was conducted from August 1, 2013 to February 1, 2014, that included 14 male patients previously diagnosed with BPH, who were aged between 59 and 69 years. The trial was performed in Bucharest and involved two medical institutions: the Clinical Hospital of Eye Emergencies and the "Prof...
October 2016: Journal of Medicine and Life
https://www.readbyqxmd.com/read/27926751/ocular-perfusion-pressure-and-choroidal-thickness-in-early-age-related-macular-degeneration-patients-with-reticular-pseudodrusen
#6
Cheolmin Yun, Jaemoon Ahn, Minjung Kim, Soon-Young Hwang, Seong-Woo Kim, Jaeryung Oh
Purpose: The purpose of this study was to investigate the relationship between the ocular perfusion pressure (OPP) and subfoveal choroidal thickness (CT) in eyes with early age-related macular degeneration (AMD) with or without reticular pseudodrusen (RPD). Methods: We evaluated the clinical history, blood pressure parameters, fundus photography, and optical coherence tomography images of consecutive patients with early AMD. We calculated the mean OPP from blood pressure and intraocular pressure...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27923559/nrf2-protects-photoreceptor-cells-from-photo-oxidative-stress-induced-by-blue-light
#7
Wan-Ju Chen, Caiying Wu, Zhenhua Xu, Yoshiki Kuse, Hideaki Hara, Elia J Duh
Oxidative stress plays a key role in age-related macular degeneration and hereditary retinal degenerations. Light damage in rodents has been used extensively to model oxidative stress-induced photoreceptor degeneration, and photo-oxidative injury from blue light is particularly damaging to photoreceptors. The endogenous factors protecting photoreceptors from oxidative stress, including photo-oxidative stress, are continuing to be elucidated. In this study, we evaluated the effect of blue light exposure on photoreceptors and its relationship to Nrf2 using cultured murine photoreceptor (661W) cells...
December 3, 2016: Experimental Eye Research
https://www.readbyqxmd.com/read/27918775/association-between-myopia-ultraviolet-b-radiation-exposure-serum-vitamin-d-concentrations-and-genetic-polymorphisms-in-vitamin-d-metabolic-pathways-in-a-multicountry-european-study
#8
Katie M Williams, Graham C G Bentham, Ian S Young, Ann McGinty, Gareth J McKay, Ruth Hogg, Christopher J Hammond, Usha Chakravarthy, Mati Rahu, Johan Seland, Gisele Soubrane, Laura Tomazzoli, Fotis Topouzis, Astrid E Fletcher
Importance: Myopia is becoming increasingly common globally and is associated with potentially sight-threatening complications. Spending time outdoors is protective, but the mechanism underlying this association is poorly understood. Objective: To examine the association of myopia with ultraviolet B radiation (UVB; directly associated with time outdoors and sunlight exposure), serum vitamin D concentrations, and vitamin D pathway genetic variants, adjusting for years in education...
December 1, 2016: JAMA Ophthalmology
https://www.readbyqxmd.com/read/27918759/the-functional-effect-of-rare-variants-in-complement-genes-on-c3b-degradation-in-patients-with-age-related-macular-degeneration
#9
Maartje J Geerlings, Mariann Kremlitzka, Bjorn Bakker, Sara C Nilsson, Nicole T Saksens, Yara T Lechanteur, Marc Pauper, Jordi Corominas, Sascha Fauser, Carel B Hoyng, Anna M Blom, Eiko K de Jong, Anneke I den Hollander
Importance: In age-related macular degeneration (AMD), rare variants in the complement system have been described, but their functional consequences remain largely unexplored. Objectives: To identify new rare variants in complement genes and determine the functional effect of identified variants on complement levels and complement regulation in serum samples from carriers and noncarriers. Design, Setting, and Participants: This study evaluated affected (n = 114) and unaffected (n = 60) members of 22 families with AMD and a case-control cohort consisting of 1831 unrelated patients with AMD and 1367 control individuals from the European Genetic Database from March 29, 2006, to April 26, 2013, in Nijmegen, the Netherlands, and Cologne, Germany...
December 1, 2016: JAMA Ophthalmology
https://www.readbyqxmd.com/read/27918307/vegf-regulates-local-inhibitory-complement-proteins-in-the-eye-and-kidney
#10
Lindsay S Keir, Rachel Firth, Lyndsey Aponik, Daniel Feitelberg, Susumu Sakimoto, Edith Aguilar, Gavin I Welsh, Anna Richards, Yoshihiko Usui, Simon C Satchell, Valeryia Kuzmuk, Richard J Coward, Jonathan Goult, Katherine R Bull, Ruchi Sharma, Kapil Bharti, Peter D Westenskow, Iacovos P Michael, Moin A Saleem, Martin Friedlander
Outer retinal and renal glomerular functions rely on specialized vasculature maintained by VEGF that is produced by neighboring epithelial cells, the retinal pigment epithelium (RPE) and podocytes, respectively. Dysregulation of RPE- and podocyte-derived VEGF is associated with neovascularization in wet age-related macular degeneration (ARMD), choriocapillaris degeneration, and glomerular thrombotic microangiopathy (TMA). Since complement activation and genetic variants in inhibitory complement factor H (CFH) are also features of both ARMD and TMA, we hypothesized that VEGF and CFH interact...
December 5, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27917530/visual-complications-in-diabetes-mellitus-beyond-retinopathy
#11
REVIEW
A Khan, I N Petropoulos, G Ponirakis, R A Malik
Diabetic retinopathy is the most common cause of vision loss in people with diabetes mellitus; however, other causes of visual impairment/loss include other retinal and non-retinal visual problems, including glaucoma, age-related macular degeneration, non-arteritic anterior ischaemic optic neuropathy and cataracts. Additionally, when a person with diabetes complains of visual disturbance despite a visual acuity of 6/6, abnormalities in refraction, contrast sensitivity, straylight and amplitude of accommodation should be considered...
December 5, 2016: Diabetic Medicine: a Journal of the British Diabetic Association
https://www.readbyqxmd.com/read/27917311/rock-inhibition-promotes-attachment-proliferation-and-wound-closure-in-human-embryonic-stem-cell-derived-retinal-pigmented-epithelium
#12
Roxanne H Croze, William J Thi, Dennis O Clegg
PURPOSE: Nonexudative (dry) age-related macular degeneration (AMD), a leading cause of blindness in the elderly, is associated with the loss of retinal pigmented epithelium (RPE) cells and the development of geographic atrophy, which are areas devoid of RPE cells and photoreceptors. One possible treatment option would be to stimulate RPE attachment and proliferation to replace dying/dysfunctional RPE and bring about wound repair. Clinical trials are underway testing injections of RPE cells derived from pluripotent stem cells to determine their safety and efficacy in treating AMD...
November 2016: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/27914835/%C3%AE-blockers-and-neovascular-age-related-macular-degeneration
#13
Ling Yeung, Ting-Shuo Huang, Yun-Hsuan Lin, Kuang-Hung Hsu, Jerry Chien-Chieh Huang, Chi-Chin Sun
No abstract text is available yet for this article.
November 30, 2016: Ophthalmology
https://www.readbyqxmd.com/read/27913869/ranibizumab-for-vascularized-pigment-epithelial-detachment-1-year-anatomic-and-functional-results
#14
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/27913654/novel-small-molecule-jp-153-targets-the-src-fak-paxillin-signaling-complex-to-inhibit-vegf-induced-retinal-angiogenesis
#15
Jordan J Toutounchian, Jayaprakash Pagadala, Duane D Miller, Jerome Baudry, Frank Park, Edward Chaum, Charles R Yates
Targeting vascular endothelial growth factor (VEGF) is a common treatment strategy for neovascular eye disease, a major cause of vision loss in diabetic retinopathy and age-related macular degeneration. However, the decline in clinical efficacy over time in many patients suggests that monotherapy of anti-VEGF protein therapeutics may benefit from adjunctive treatments. Our previous work has shown that through decreased activation of the cytoskeletal protein paxillin, growth factor-induced ischemic retinopathy in the murine oxygen-induced retinopathy model could be inhibited...
January 2017: Molecular Pharmacology
https://www.readbyqxmd.com/read/27913556/how-does-age-related-macular-degeneration-affect-real-world-visual-ability-and-quality-of-life-a-systematic-review
#16
Deanna J Taylor, Angharad E Hobby, Alison M Binns, David P Crabb
OBJECTIVES: To review systematically the evidence of age-related macular degeneration (AMD) affecting real-world visual ability and quality of life (QoL). To explore trends in specific topics within this body of the literature. DESIGN: Systematic review. METHODS: A systematic literature search was carried out using MEDLINE, EMBASE, CINAHL, PsycINFO, PsychARTICLES and Health and Psychosocial Instruments for articles published up to January 2015 for studies including people diagnosed with AMD, assessing real-world visual ability or QoL as an outcome...
December 2, 2016: BMJ Open
https://www.readbyqxmd.com/read/27913442/comparison-of-anti-vegf-therapies-on-fibrovascular-pigment-epithelial-detachments-in-age-related-macular-degeneration
#17
Adrian Au, Vishal S Parikh, Rishi P Singh, Justis P Ehlers, Alex Yuan, Aleksandra V Rachitskaya, Jonathan E Sears, Sunil K Srivastava, Peter K Kaiser, Andrew P Schachat, Daniel F Martin, Yasha Modi
BACKGROUND: The aim is to compare the therapeutic effects of three antivascular endothelial growth factor (VEGF) drugs (bevacizumab, aflibercept and ranibizumab) on fibrovascular pigment epithelial detachments (fvPEDs) in age-related macular degeneration (AMD). METHODS: This was a retrospective, comparative, consecutive case series of 88 unique eyes with fvPEDs in neovascular AMD treated with anti-VEGF monotherapy for a minimum of 6 months. All eyes were treatment naive...
December 2, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27913120/gene-delivery-nanoparticles-to-modulate-angiogenesis
#18
REVIEW
Jayoung Kim, Adam C Mirando, Aleksander S Popel, Jordan J Green
Angiogenesis is naturally balanced by many pro- and anti-angiogenic factors while an imbalance of these factors leads to aberrant angiogenesis, which is closely associated with many diseases. Gene therapy has become a promising strategy for the treatment of such a disordered state through the introduction of exogenous nucleic acids that express or silence the target agents, thereby engineering neovascularization in both directions. Numerous non-viral gene delivery nanoparticles have been investigated towards this goal, but their clinical translation has been hampered by issues associated with safety, delivery efficiency, and therapeutic effect...
November 29, 2016: Advanced Drug Delivery Reviews
https://www.readbyqxmd.com/read/27912913/intravitreal-therapies-for-non-neovascular-age-related-macular-degeneration-with-intraretinal-or-subretinal-fluid
#19
M Cuesta-Lasso, A Vieira-Barros, R Dolz-Marco, M J Roig-Revert, J Badal, L Amselem, M Díaz-Llopis, R Gallego-Pinazo
OBJECTIVE: To evaluate the efficacy of intravitreal therapies in cases of atrophic age-related macular degeneration (AMD) with subretinal or intraretinal fluid. METHODS: A retrospective review was made of the clinical charts of patients diagnosed with atrophic AMD with subretinal or intraretinal fluid. Fundus photographs and spectral-domain optical coherence tomography images were examined, and an analysis was made on the presence of fluid and its density. Neovascularisation was ruled out by fluorescein and/or indocyanine green angiography...
November 29, 2016: Archivos de la Sociedad Española de Oftalmología
https://www.readbyqxmd.com/read/27911444/impact-of-optical-coherence-tomography-scanning-density-on-quantitative-analyses-in-neovascular-age-related-macular-degeneration
#20
S B Velaga, M G Nittala, R K Konduru, F Heussen, P A Keane, S R Sadda
PurposeTo assess the influence of varying B-scan frame-sampling densities on retinal thickness and volume measurements from spectral domain optical coherence tomography (OCT) in eyes with neovascular age-related macular degeneration (AMD).MethodsVolume OCT data (512 × 128 macular cube over 6 × 6 mm) were collected from 39 eyes with neovascular AMD. All 128 B-scans in each image set were manually segmented, allowing quantification of the neurosensory retina, subretinal fluid (SRF), subretinal hyperreflective material (SRHM), and pigment epithelium detachment (PED)...
December 2, 2016: Eye
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