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https://www.readbyqxmd.com/read/28641277/association-of-the-cfh-y402h-polymorphism-with-the-1-year-response-of-exudative-amd-to-intravitreal-anti-vegf-treatment-in-the-brazilian-population
#1
Flavio Mac Cord Medina, Augusto Alves Lopes da Motta, Walter Yukihiko Takahashi, Pedro Carlos Carricondo, Mario Martins Dos Santos Motta, Monica B Melo, Jose Paulo C Vasconcellos
AIM: Evidence of the relationship between the polymorphism of the complement factor H (CFH) gene at position 402 (Y402H) and the response to the treatment of wet AMD is controversial. The aim of this study was to compare the functional and morphological 1-year evolution of patients with exudative AMD treated with antivascular endothelial growth factor (VEGF) drugs with the CFH Y402H polymorphism in the Brazilian population. METHODS: Forty-six patients treated for wet AMD with bevacizumab or ranibizumab in a pro re nata regimen were included...
June 23, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28641113/enhanced-functional-genomic-screening-identifies-novel-mediators-of-dual-leucine-zipper-kinase-dependent-injury-signaling-in-neurons
#2
Derek S Welsbie, Katherine L Mitchell, Vinod Jaskula-Ranga, Valentin M Sluch, Zhiyong Yang, Jessica Kim, Eugen Buehler, Amit Patel, Scott E Martin, Ping-Wu Zhang, Yan Ge, Yukan Duan, John Fuller, Byung-Jin Kim, Eman Hamed, Xitiz Chamling, Lei Lei, Iain D C Fraser, Ze'ev A Ronai, Cynthia A Berlinicke, Donald J Zack
Dual leucine zipper kinase (DLK) has been implicated in cell death signaling secondary to axonal damage in retinal ganglion cells (RGCs) and other neurons. To better understand the pathway through which DLK acts, we developed enhanced functional genomic screens in primary RGCs, including use of arrayed, whole-genome, small interfering RNA libraries. Explaining why DLK inhibition is only partially protective, we identify leucine zipper kinase (LZK) as cooperating with DLK to activate downstream signaling and cell death in RGCs, including in a mouse model of optic nerve injury, and show that the same pathway is active in human stem cell-derived RGCs...
June 21, 2017: Neuron
https://www.readbyqxmd.com/read/28641094/emerging-concepts-in-cytomegalovirus-infection-following-hematopoietic-stem-cell-transplantation
#3
REVIEW
Jose F Camargo, Krishna V Komanduri
Despite the refinements in molecular methods for the detection of cytomegalovirus (CMV) and the advent of highly effective preemptive strategies, CMV remains a leading cause of morbidity and mortality in hematopoietic cell transplant (HCT) recipients. CMV can cause tissue-invasive disease including pneumonia, hepatitis, colitis, retinitis, and encephalitis. Mortality in HCT recipients with CMV disease can be as high as 60%. CMV infection has been associated with increased risk of secondary bacterial and fungal infections, increased risk of graft-versus-host disease, and high rates of nonrelapse mortality following HCT...
June 14, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28640840/applying-artificial-intelligence-to-disease-staging-deep-learning-for-improved-staging-of-diabetic-retinopathy
#4
Hidenori Takahashi, Hironobu Tampo, Yusuke Arai, Yuji Inoue, Hidetoshi Kawashima
PURPOSE: Disease staging involves the assessment of disease severity or progression and is used for treatment selection. In diabetic retinopathy, disease staging using a wide area is more desirable than that using a limited area. We investigated if deep learning artificial intelligence (AI) could be used to grade diabetic retinopathy and determine treatment and prognosis. METHODS: The retrospective study analyzed 9,939 posterior pole photographs of 2,740 patients with diabetes...
2017: PloS One
https://www.readbyqxmd.com/read/28640837/identification-and-prediction-of-alternative-transcription-start-sites-that-generate-rod-photoreceptor-specific-transcripts-from-ubiquitously-expressed-genes
#5
Evgenya Y Popova, Anna C Salzberg, Chen Yang, Samuel Shao-Min Zhang, Colin J Barnstable
Transcriptome complexity is substantially increased by the use of multiple transcription start sites for a given gene. By utilizing a rod photoreceptor-specific chromatin signature, and the RefSeq database of established transcription start sites, we have identified essentially all known rod photoreceptor genes as well as a group of novel genes that have a high probability of being expressed in rod photoreceptors. Approximately half of these novel rod genes are transcribed into multiple mRNA and/or protein isoforms through alternative transcriptional start sites (ATSS), only one of which has a rod-specific epigenetic signature and gives rise to a rod transcript...
2017: PloS One
https://www.readbyqxmd.com/read/28640657/retinal-findings-on-oct-in-systemic-conditions
#6
Preeti Patil Chhablani, Vikas Ambiya, Akshay G Nair, Sailaja Bondalapati, Jay Chhablani
PURPOSE: Imaging technology has advanced by leaps and bounds in the recent past and has resulted in a much greater understanding of ocular diseases. The aim of this review article is to summarize optical coherence tomography (OCT) findings of various systemic conditions. METHOD: A systematic literature search of the Medline/PubMed database was performed. English articles up to April 2015 were included. Terms used for search included: Alzheimer's Disease; Multiple Sclerosis; Parkinson's Disease; Behçet's Disease; Schizophrenia; Migraine; Obstructive Sleep Apnea Syndrome; Neurofibromatosis; Sickle Cell Disease; Renal diseases; Lupus Retinopathy; Valsalva Retinopathy; Whiplash Retinopathy; Shaken-Baby Syndrome; Choroidal metastases; Intracranial Hypertension; Drug toxicity; Deferoxamine; Sildenafil; Tamoxifen; Hydroxychloroquine; Chloroquine; Ethambutol; Lead; Sickle Cell Disease; and Thalassemia along with OCT...
June 22, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28636270/c-reactive-protein-and-progression-of-vision-loss-in-retinitis-pigmentosa
#7
Yusuke Murakami, Yasuhiro Ikeda, Shunji Nakatake, Kohta Fujiwara, Takashi Tachibana, Noriko Yoshida, Shoji Notomi, Toshio Hisatomi, Shigeo Yoshida, Tatsuro Ishibashi, Koh-Hei Sonoda
PURPOSE: Chronic inflammation is involved in retinitis pigmentosa (RP). We demonstrated previously that intraocular inflammatory levels, as measured by slit-lamp ophthalmoscopy or laser flare photometry, are inversely correlated with central visual function in patients with RP. Here, we investigated the relationship between serum high-sensitivity C-reactive protein (hs-CRP) and visual parameters in RP. METHODS: We studied 58 consecutive typical patients with RP <40 years old and 29 age- and gender-matched controls...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28636126/bilateral-diffuse-uveal-melanocytic-proliferation-case-report-and-literature-review
#8
REVIEW
Kristian Klemp, Jens Folke Kiilgaard, Steffen Heegaard, Tove Nørgaard, Mette Klarskov Andersen, Jan Ulrik Prause
Bilateral diffuse uveal melanocytic proliferation (BDUMP) is a rare paraneoplastic intraocular disease that causes progressive visual loss in patients driven by an IgG factor associated with an underlying malignancy. Characteristic ocular findings include exudative retinal detachment, rapid cataract formation and uveal melanocytic tumours. The awareness and documentation of BDUMP has increased during the past decade, and the increasing amount of data collected demonstrates the effect of treatment with plasmapheresis and the value of diagnostic tools in BDUMP such as genetic and immunologic investigations...
June 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28635424/genome-wide-linkage-and-haplotype-sharing-analysis-implicates-the-mcdr3-locus-as-a-candidate-region-for-a-developmental-macular-disorder-in-association-with-digit-abnormalities
#9
Valentina Cipriani, Ambreen Kalhoro, Gavin Arno, Raquel S Silva, Nikolas Pontikos, Virginie Puech, Michelle E McClements, David M Hunt, Veronica van Heyningen, Michel Michaelides, Andrew R Webster, Anthony T Moore, Bernard Puech
BACKGROUND: Developmental macular disorders are a heterogeneous group of rare retinal conditions that can cause significant visual impairment from childhood. Among these disorders, autosomal dominant North Carolina macular dystrophy (NCMD) has been mapped to 6q16 (MCDR1) with recent support for a non-coding disease mechanism of PRDM13. A second locus on 5p15-5p13 (MCDR3) has been implicated in a similar phenotype, but the disease-causing mechanism still remains unknown. METHODS: Two families affected by a dominant developmental macular disorder that closely resembles NCMD in association with digit abnormalities were included in the study...
March 2, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28633153/association-between-visual-function-and-subretinal-drusenoid-deposits-in-normal-and-early-age-related-macular-degeneration-eyes
#10
David Neely, Anna V Zarubina, Mark E Clark, Carrie E Huisingh, Gregory R Jackson, Yuhua Zhang, Gerald McGwin, Christine A Curcio, Cynthia Owsley
PURPOSE: To examine the association between subretinal drusenoid deposits (SDDs) identified by multimodal retinal imaging and visual function in older eyes with normal macular health or in the earliest phases of age-related macular degeneration (AMD). METHODS: Age-related macular degeneration status for each eye was defined according to the Age-Related Eye Disease Study (AREDS) 9-step classification system (normal = Step 1, early AMD = Steps 2-4) based on color fundus photographs...
July 2017: Retina
https://www.readbyqxmd.com/read/28632993/the-role-of-small-gtpases-and-epac-rap-signaling-in-the-regulation-of-the-blood-brain-and-blood-retinal-barriers
#11
Carla J Ramos, David A Antonetti
Maintenance and regulation of the vascular endothelial cell junctional complex is critical for proper barrier function of the blood-brain barrier (BBB) and the highly related blood-retinal barrier (BRB) that help maintain proper neuronal environment. Recent research has demonstrated that the junctional complex is actively maintained and can be dynamically regulated. Studies focusing on the mechanisms of barrier formation, maintenance, and barrier disruption have been of interest to understanding development of the BBB and BRB and identifying a means for therapeutic intervention for diseases ranging from brain tumors and dementia to blinding eye diseases...
June 9, 2017: Tissue Barriers
https://www.readbyqxmd.com/read/28632880/the-urokinase-receptor-derived-peptide-uparant-recovers-dysfunctional-electroretinogram-and-blood-retinal-barrier-leakage-in-a-rat-model-of-diabetes
#12
Maurizio Cammalleri, Filippo Locri, Stefania Marsili, Massimo Dal Monte, Claudio Pisano, Angelo Mancinelli, Liliana Lista, Dario Rusciano, Mario De Rosa, Vincenzo Pavone, Paola Bagnoli
Purpose: The activation of the urokinase-type plasminogen activator and its receptor system is associated with retinal diseases. Among peptide inhibitors of this system, UPARANT acts by preventing the onset of pathologic signs of neovascular ocular diseases. We investigated whether systemic UPARANT may act in a therapeutic regimen by suppressing the retinal damage that characterizes diabetic retinopathy using a rat model of streptozotocin-induced diabetes. Methods: In healthy rats, plasma, eye, and retina concentrations of UPARANT were evaluated by mass spectrometry...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632879/reliability-and-agreement-between-metrics-of-cone-spacing-in-adaptive-optics-images-of-the-human-retinal-photoreceptor-mosaic
#13
Daniela Giannini, Giuseppe Lombardo, Letizia Mariotti, Nicholas Devaney, Sebastiano Serrao, Marco Lombardo
Purpose: To assess reliability and agreement among three metrics used to evaluate the distribution of cell distances in adaptive optics (AO) images of the cone mosaic. Methods: Using an AO flood illumination retinal camera, we acquired images of the cone mosaic in 20 healthy subjects and 12 patients with retinal diseases. The three spacing metrics studied were the center-to-center spacing (Scc), the local cone spacing (LCS), and the density recovery profile distance (DRPD)...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632847/pattern-recognition-analysis-of-age-related-retinal-ganglion-cell-signatures-in-the-human-eye
#14
Nayuta Yoshioka, Barbara Zangerl, Lisa Nivison-Smith, Sieu K Khuu, Bryan W Jones, Rebecca L Pfeiffer, Robert E Marc, Michael Kalloniatis
Purpose: To characterize macular ganglion cell layer (GCL) changes with age and provide a framework to assess changes in ocular disease. This study used data clustering to analyze macular GCL patterns from optical coherence tomography (OCT) in a large cohort of subjects without ocular disease. Methods: Single eyes of 201 patients evaluated at the Centre for Eye Health (Sydney, Australia) were retrospectively enrolled (age range, 20-85); 8 × 8 grid locations obtained from Spectralis OCT macular scans were analyzed with unsupervised classification into statistically separable classes sharing common GCL thickness and change with age...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632734/choroidal-thickness-in-patients-with-coronary-artery-disease
#15
Meleha Ahmad, Patrick A Kaszubski, Lucy Cobbs, Harmony Reynolds, Roland Theodore Smith
PURPOSE: To evaluate choroidal thickness (CTh) in patients with coronary artery disease (CAD) compared to healthy controls. DESIGN: Cross-sectional. METHODS: Setting: Ambulatory clinic of a large city hospital. Patient population: Thirty-four patients had documented CAD, defined as history of >50% obstruction in at least one coronary artery on cardiac catheterization, positive stress test, ST elevation myocardial infarction, or revascularization procedure...
2017: PloS One
https://www.readbyqxmd.com/read/28632410/correlation-between-interleukin-6-and-thrombin-antithrombin-iii-complex-levels-in-retinal-diseases
#16
Rita Ehrlich, Alon Zahavi, Ruth Axer-Siegel, Ivan Budnik, Ayelet Dreznik, Mor Dahbash, Yael Nisgav, Elinor Megiddo, Gili Kenet, Dov Weinberger, Tami Livnat
PURPOSE: This study aims to evaluate and correlate the levels of interleukin-6 (IL-6) and thrombin-antithrombin III complex (TAT) in the vitreous of patients with different vitreoretinal pathologies. METHODS: Vitreous samples were collected from 78 patients scheduled for pars plana vitrectomy at a tertiary medical center. Patients were divided by the underlying vitreoretinal pathophysiology, as follows: macular hole (MH)/epiretinal membrane (ERM) (n = 26); rhegmatogenous retinal detachment (RRD) (n = 32); and proliferative diabetic retinopathy (PDR) (n = 20)...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632028/the-effect-of-combined-systemic-erythropoietin-and-steroid-on-non-arteritic-anterior-ischemic-optic-neuropathy-a-prospective-study
#17
Mohammad Pakravan, Hamed Esfandiari, Kiana Hassanpour, Sarvnaz Razavi, Parastou Pakravan
BACKGROUND: To investigate the effect of combined intravenous (IV) erythropoietin (EPO) and corticosteroid as well as systemic steroid alone for the treatment of non-arteritic anterior ischemic optic neuropathy (NAION). METHODS: In this prospective interventional comparative case series, 113 consecutive patients diagnosed with recent onset (less than 14 days) NAION were included. Patients were categorized into three groups. 40 patients received systemic IV corticosteroid combined with recombinant human erythropoietin (rhEPO) (group 1), 43 patients received systemic corticosteroid alone (group 2), and 30 patients were enrolled as the control group (group 3)...
February 26, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28631245/hypoxia-and-inflammation-in-the-release-of-vegf-and-interleukins-from-human-retinal-pigment-epithelial-cells
#18
Olli Arjamaa, Vesa Aaltonen, Niina Piippo, Tamás Csont, Goran Petrovski, Kai Kaarniranta, Anu Kauppinen
PURPOSE: Retinal diseases are closely associated with both decreased oxygenation and increased inflammation. It is not known if hypoxia-induced vascular endothelial growth factor (VEGF) expression in the retina itself evokes inflammation, or whether inflammation is a prerequisite for the development of neovascularization. METHODS: Human ARPE-19 cell line and primary human retinal pigment epithelium (RPE) cells were used. ARPE-19 cells were kept either under normoxic (24 h or 48 h) or hypoxic conditions (1% O2, 24 h)...
June 19, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28630796/von-hippel-lindau-disease-the-importance-of-retinal-hemangioblastomas-in-diagnosis
#19
Sevinç Şahin Atik, Aslı Ece Solmaz, Zafer Öztaş, Emine Deniz Eğrilmez, Şeyda Uğurlu, Tahir Atik, Filiz Afrashi
Von Hippel-Lindau (VHL) disease is a familial cancer syndrome characterized by benign or malignant tumors which may involve more than one system. Retinal hemangioblastomas are usually the initial manifestation of VHL disease and can cause vision loss. A 32-year-old man presented to our clinic with vision loss in the left eye for 2 months. He had a history of cerebral hemangioblastoma operation. Family history showed that his mother had unilateral vision loss and died because of renal cell carcinoma. Ophthalmologic examination revealed multiple retinal hemangioblastomas in both eyes...
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28630795/efficacy-of-oral-valacyclovir-treatment-in-a-case-with-acute-retinal-necrosis
#20
Mert Şimşek, Pınar Çakar Özdal, Kemal Tekin
Acute retinal necrosis (ARN) is a rapidly progressive disease with poor prognosis, leading to visual loss in most cases. Rapid diagnosis and early anti-viral treatment significantly affect the course and prognosis of the disease. In this case report, we present a 34-year-old female patient referred to our clinic with symptoms of blurred vision and ocular pain diagnosed as acute glaucoma elsewhere. A clinical diagnosis of ARN was made and anti-viral treatment was started immediately. We herein describe our treatment approach to this particular case and discuss previously reported treatment modalities...
June 2017: Turkish Journal of Ophthalmology
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