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https://www.readbyqxmd.com/read/29782502/a-monoclonal-antibody-targeting-amyloid-%C3%AE-a%C3%AE-restores-complement-factor-i-bioactivity-potential-implications-in-age-related-macular-degeneration-and-alzheimer-s-disease
#1
Kameran Lashkari, Gianna Teague, Hong Chen, Yong-Qing Lin, Sanjay Kumar, Megan M McLaughlin, Francisco J López
Activation of the alternative complement cascade has been implicated in the pathogenesis of age related macular degeneration (AMD) and Alzheimer's disease (AD). Amyloid β (Aβ), a component of drusen, may promote complement activation by inhibiting CFI bioactivity. We determined whether Aβ reduced CFI bioactivity and whether antibodies against Aβ including a monoclonal antibody, GSK933776 could restore CFI bioactivity. We also measured CFI bioactivity in plasma of subjects with AMD and AD. In support of the GSK933776 development program in AMD (geographic atrophy), we developed a quantitative assay to measure CFI bioactivity based on its ability to cleave C3b to iC3b, and repeated it in presence or absence of Aβ and anti-Aβ antibodies...
2018: PloS One
https://www.readbyqxmd.com/read/29781975/novel-best1-mutations-detected-by-next-generation-sequencing-in-a-chinese-population-with-vitelliform-macular-dystrophy
#2
Jingli Guo, Fengjuan Gao, Wenyi Tang, Yuhe Qi, Yi Xuan, Wei Liu, Lei Li, Xiaofeng Ye, Gezhi Xu, Jihong Wu, Yongjin Zhang
PURPOSE: To characterize novel BEST1 mutations and the phenotype-genotype correlations in vitelliform macular dystrophy in a Chinese population. METHODS: Seventeen individuals affected by vitelliform macular dystrophy underwent detailed ophthalmic examinations, including a best-corrected visual acuity test, slit-lamp biomicroscopy, fundus photography, spectral-domain optical coherence tomography, fundus autofluorescence, fluorescein angiography, and optical coherence tomography angiography...
May 16, 2018: Retina
https://www.readbyqxmd.com/read/29781974/prognostic-value-of-shape-descriptive-factors-for-the-progression-of-geographic-atrophy-secondary-to-age-related-macular-degeneration
#3
Maximilian Pfau, Moritz Lindner, Lukas Goerdt, Sarah Thiele, Jennifer Nadal, Matthias Schmid, Steffen Schmitz-Valckenberg, SriniVas R Sadda, Frank G Holz, Monika Fleckenstein
PURPOSE: To systematically compare the prognostic value of multiple shape-descriptive factors in the natural course of the disease. METHODS: A total of 296 eyes of 201 patients (female patients 130; mean age: 72.2 ± 13.08 years) with a median follow-up of 2.38 years from 2 prospective, noninterventional natural history studies (Fundus-Autofluorescence-in-Age-related-Macular-Degeneration [clinicaltrials.gov identifier NCT00393692], Directional-Spread-in-Geographic-Atrophy [NCT02051998]) were included in the analysis...
May 16, 2018: Retina
https://www.readbyqxmd.com/read/29780906/hla-a29-negative-birdshot-like-chorioretinopathy-associated-with-common-variable-immunodeficiency
#4
Razek Georges Coussa, Fares Antaki, David E Lederer
Purpose: To report the longest ophthalmic follow-up and the associated ocular complications of HLA-A29 negative Birdshot-like chorioretinopathy (BLCR) associated with common variable immunodeficiency (CVID). Observations: A 22-year-old man known for CVID presented with a 3-month history of decreased visual acuity OS. Funduscopy revealed significant cystoid macular edema OS, as well as optic disk edema and chorioretinal infiltrates without signs of vitritis OU. No infectious, inflammatory or neoplastic etiologies were identified...
June 2018: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29780864/change-in-retinal-structural-anatomy-during-the-preclinical-stage-of-alzheimer-s-disease
#5
Cláudia Y Santos, Lenworth N Johnson, Stuart E Sinoff, Elena K Festa, William C Heindel, Peter J Snyder
Introduction: We conducted a 27-month longitudinal study of mid-life adults with preclinical Alzheimer's disease (AD), using spectral domain optical coherence tomography to compare changes in volume and thickness in all retinal neuronal layers to those of age-matched healthy control subjects. Methods: Fifty-six older adults (mean age = 65.36 years) with multiple risk factors for AD completed spectral domain optical coherence tomography retinal imaging and cognitive testing at baseline...
2018: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/29780155/myelin-oligodendrocyte-glycoprotein-igg-positive-recurrent-bilateral-optic-papillitis-with-serous-retinal-detachment-a-case-report
#6
Tomoya Kon, Hiroki Hikichi, Tatsuya Ueno, Chieko Suzuki, Jinichi Nunomura, Kimihiko Kaneko, Toshiyuki Takahashi, Ichiro Nakashima, Masahiko Tomiyama
Autoantibodies against myelin oligodendrocyte glycoprotein (MOG-IgG) have been detected in inflammatory demyelinating central nervous system diseases. A 30-year-old woman had blurred vision, marked optic nerve disc swelling, serous retinal detachment at the macular on optic coherence tomography, and MOG-IgG seropositivity. The patient was thought to have optic papillitis associated with MOG-IgG. Her symptoms rapidly improved after high-dose methylprednisolone therapy. We hypothesize that serous retinal detachment was secondary, arising from optic papillitis...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29777261/mitochondrial-quality-control-in-amd-does-mitophagy-play-a-pivotal-role
#7
REVIEW
Juha M T Hyttinen, Johanna Viiri, Kai Kaarniranta, Janusz Błasiak
Age-related macular degeneration (AMD) is the predominant cause of visual loss in old people in the developed world, whose incidence is increasing. This disease is caused by the decrease in macular function, due to the degeneration of retinal pigment epithelium (RPE) cells. The aged retina is characterised by increased levels of reactive oxygen species (ROS), impaired autophagy, and DNA damage that are linked to AMD pathogenesis. Mitophagy, a mitochondria-specific type of autophagy, is an essential part of mitochondrial quality control, the collective mechanism responsible for this organelle's homeostasis...
May 18, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29774170/liquid-biopsy-of-vitreous-reveals-an-abundant-vesicle-population-consistent-with-the-size-and-morphology-of-exosomes
#8
Yuanjun Zhao, Sarah R Weber, Joshua Lease, Mariano Russo, Christopher A Siedlecki, Li-Chong Xu, Han Chen, Weiwei Wang, Michael Ford, Rafael Simó, Jeffrey M Sundstrom
Purpose: To investigate the molecular components of the vitreous in order to better understand retinal physiology and disease. Methods: Vitreous was acquired from patients undergoing vitrectomy for macular hole and/or epiretinal membrane, postmortem donors, and C57BL/6J mice. Unbiased proteomic analysis was performed via electrospray ionization tandem mass spectrometry (MS/MS). Gene ontology analysis was performed and results were confirmed with transmission electron microscopy, atomic force microscopy, and nanoparticle tracking analysis (NTA)...
May 2018: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/29773271/juvenile-idiopathic-arthritis-associated-uveitis
#9
REVIEW
Ethan S Sen, A V Ramanan
Juvenile idiopathic arthritis (JIA) is the commonest rheumatic disease in children and JIA-associated uveitis its most frequent extra-articular manifestation. The uveitis is potentially sight-threatening and thus carries a considerable risk of morbidity with associated reduction in quality of life. The commonest form of uveitis seen in association with JIA is chronic anterior uveitis, which is almost always asymptomatic in the initial stages. Therefore, screening for JIA-associated uveitis in at-risk patients is essential...
August 2017: Best Practice & Research. Clinical Rheumatology
https://www.readbyqxmd.com/read/29773175/blood-lead-and-cadmium-in-age-related-macular-degeneration-in-a-turkish-urban-population
#10
Elif Damar Güngör, Fatma Yülek, Utku Serkant, Yasin Toklu, Asım Hocaoğlu, Şaban Şimsek
PURPOSE: To evaluate the blood lead (Pb) and cadmium (Cd) levels in age related macular degeneration (AMD) in a turkish urban population. METHODS: Blood Pb and Cd levels of 31 AMD patients and 24 age and gender matched controls with no sign of AMD were measured using dual atomic absorption spectrophotometer system (AAS). History of hypertension, diabetes mellitus, cigarette smoking, myocardial infarction and stroke were obtained from all subjects. Degree of AMD was grade 4 according to the Age-Related Eye Disease Study grading system...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29772051/optical-coherence-tomography-angiography-of-pigmented-paravenous-retinochoroidal-atrophy
#11
Maria Vittoria Cicinelli, Chiara Giuffrè, Alessandro Rabiolo, Maurizio Battaglia Parodi, Francesco Bandello
A 58-year-old man with bilateral pigmented paravenous retinochoroidal atrophy (PPRCA) associated with macular coloboma in the right eye underwent color fundus photography and fundus autofluorescence with the California ultra-widefield retinal imaging system (Optos, Dunfermline, UK), spectral-domain optical coherence tomography (SD-OCT) (Heidelberg Spectralis HRA + OCT; Heidelberg Engineering, Heidelberg, Germany), and en face OCT angiography (OCTA) (AngioPlex, Cirrus HD-OCT 5000; Carl Zeiss Meditec, Dublin, CA)...
May 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29772042/subfoveal-choroidal-thickness-as-a-potential-predictor-of-clinical-response-to-stereotactic-radiotherapy-for-neovascular-age-related-macular-degeneration
#12
Mahdy Ranjbar, Maximilian Kurz, Annekatrin Holzhey, Dirk Rades, Salvatore Grisanti
BACKGROUND AND OBJECTIVE: Stereotactic radiotherapy (SRT) is a new adjuvant treatment modality that has been shown to reduce the need for repetitive intravitreal injections (IVIs) in patients with neovascular age-related macular degeneration (nAMD). The authors aimed to determine baseline predictors of clinical response to SRT. PATIENTS AND METHODS: This was a retrospective, observational case series of patients with nAMD who underwent SRT and subsequently had at least 12 months of complete follow-up...
May 1, 2018: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/29772018/the-cost-effectiveness-of-bevacizumab-ranibizumab-and-aflibercept-for-the-treatment-of-age-related-macular-degeneration-a-cost-effectiveness-analysis-from-a-societal-perspective
#13
Freekje van Asten, Charlotte T J Michels, Carel B Hoyng, Gert Jan van der Wilt, B Jeroen Klevering, Maroeska M Rovers, Janneke P C Grutters
BACKGROUND: The discussion on the use of bevacizumab is still ongoing and often doctors are deterred from using bevacizumab due to legal or political issues. Bevacizumab is an effective, safe and inexpensive treatment option for neovascular age-related macular degeneration (AMD), albeit unregistered for the disease. Therefore, in some countries ophthalmologists use the equally effective but expensive drugs ranibizumab and aflibercept. We describe the economic consequences of this dilemma surrounding AMD treatment from a societal perspective...
2018: PloS One
https://www.readbyqxmd.com/read/29771880/-anti-vegf-therapy-for-diabetic-macular-edema-from-theory-to-clinical-practice
#14
A Zh Fursova, N V Chubar, M S Tarasov, I F Niculich, M A Vasilyeva, O G Gusarevich
PURPOSE: To evaluate clinical effectiveness of aflibercept therapy for patients with diabetic macular edema (DME) - both naïve to the drug and unresponsive to previous anti-VEGF treatment. MATERIAL AND METHODS: The study included 127 patients (127 eyes) divided into two groups. The first group consisted of 100 primary DME patients (100 eyes) with mean age of 68.48±2.56 years and average disease duration of 12.50±7.85 years. The second group comprised 27 patients (27 eyes) with resistant macular edema who had received three or more 0...
2018: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/29767815/the-effect-of-glatiramer-acetate-on-retinal-nerve-fiber-layer-thickness-in-patients-with-relapsing-remitting-multiple-sclerosis-a-longitudinal-optical-coherence-tomography-study
#15
Robert Zivadinov, Eleonora Tavazzi, Jesper Hagemeier, Ellen Carl, David Hojnacki, Channa Kolb, Bianca Weinstock-Guttman
BACKGROUND: Optical coherence tomography (OCT) is a technique that allows for the assessment of retinal nerve fiber layer thickness (RNFLT) and total macular volume (TMV), which reflect neuroaxonal integrity within the retina. As such it has been used in multiple sclerosis (MS) to study neurodegeneration. Glatiramer acetate (GA) is a widely used treatment for MS, which is suggested to have a possible neuroprotective role. OBJECTIVE: The aim of this study was to assess RFNLT and TMV changes in relapsing-remitting MS (RRMS) patients who started treatment with GA and were followed for a 24-month period...
May 16, 2018: CNS Drugs
https://www.readbyqxmd.com/read/29767720/functional-analyses-of-rare-genetic-variants-in-complement-component-c9-identified-in-patients-with-age-related-macular-degeneration
#16
Mariann Kremlitzka, Maartje J Geerlings, Sarah de Jong, Bjorn Bakker, Sara C Nilsson, Sascha Fauser, Carel B Hoyng, Eiko K de Jong, Anneke I den Hollander, Anna M Blom
Age-related macular degeneration (AMD) is a progressive disease of the central retina and the leading cause of irreversible vision loss in the western world. The involvement of abnormal complement activation in AMD has been suggested by association of variants in genes encoding complement proteins with disease development. A low-frequency variant (p.P167S) in the complement component C9 (C9) gene was recently shown to be highly associated with AMD, however its functional outcome remains largely unexplored. In this study, we reveal five novel rare genetic variants (p...
May 14, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29763479/facial-involvement-in-progressive-macular-hypomelanosis
#17
Krystle Wang, Yomna Nassef, Joya Sahu, Heidi Hermes, Laurel R Schwartz
Progressive macular hypomelanosis (PMH) is a skin disorder that historically has been described as having a predominantly truncal distribution. We report 4 adult cases of PMH with facial involvement. The diagnosis was made for all 4 patients after excluding other hypopigmented diseases. This report underscores the importance of considering PMH as part of the differential for hypopigmented lesions on the face.
April 2018: Cutis; Cutaneous Medicine for the Practitioner
https://www.readbyqxmd.com/read/29762536/proteomics-of-human-retinal-pigment-epithelium-rpe-cells
#18
REVIEW
Sarka Beranova-Giorgianni, Francesco Giorgianni
Retinal pigment epithelium (RPE) are specialized, multifunctional cells in the retina that form a monolayer of cuboidal, polarized cells adjoining the photoreceptor cells. The RPE are a critical component of the blood-retinal barrier, and they play essential functional roles for maintenance of retinal homeostasis and for support and health of photoreceptors. Age-dependent, progressive dysfunction and death of RPE cells and the resultant loss of photoreceptors contribute significantly to the development and progression of age-related macular degeneration (AMD) and other retinal degenerative diseases...
May 15, 2018: Proteomes
https://www.readbyqxmd.com/read/29760528/lrrtm4-c538y-novel-gene-mutation-is-associated-with-hereditary-macular-degeneration-with-novel-dysfunction-of-on-type-bipolar-cells
#19
Yuichi Kawamura, Akiko Suga, Takuro Fujimaki, Kazutoshi Yoshitake, Kazushige Tsunoda, Akira Murakami, Takeshi Iwata
The macula is a unique structure in higher primates, where cone and rod photoreceptors show highest density in the fovea and the surrounding area, respectively. The hereditary macular dystrophies represent a heterozygous group of rare disorders characterized by central visual loss and atrophy of the macula and surrounding retina. Here we report an atypical absence of ON-type bipolar cell response in a Japanese patient with autosomal dominant macular dystrophy (adMD). To identify a causal genetic mutation for the adMD, we performed whole-exome sequencing (WES) on four affected and four-non affected members of the family for three generations, and identified a novel p...
May 14, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29757807/thicknesses-of-central-macular-retinal-nerve-fiber-and-ganglion-cell-inner-plexiform-layers-in-patients-with-hypertension
#20
Soo Hyun Lee, Woo Hyuk Lee, Hyung Bin Lim, Young Joon Jo, Jung Yeul Kim
PURPOSE: To compare retinal thickness between patients with chronic hypertension without retinopathy, hypertensive retinopathy, Keith-Wagener-Barker Grade IV status, and normal controls using spectral domain optical coherence tomography. METHODS: In this retrospective study, we analyzed patients who visited our retinal clinic from January 2013 to February 2016. Of those included, 58 eyes of 58 patients were in the healthy control group (Group A), 37 eyes of 37 patients were in the chronic hypertension without retinopathy group (disease duration of at least 10 years; Group B), and 31 eyes of 31 patients with relieved hypertensive retinopathy (Grade IV hypertensive retinopathy a year or more ago but no longer had hypertensive retinopathy at the time of the study; Group C)...
May 11, 2018: Retina
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