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https://www.readbyqxmd.com/read/28528167/cxcl1-inhibition-regulates-uvb-induced-skin-inflammation-and-tumorigenesis-in-xpa-deficient-mice
#1
Makoto Kunisada, Chieko Hosaka, Chihiro Takemori, Eiji Nakano, Chikako Nishigori
Xeroderma pigmentosum complementation group A (XP-A) is a hereditary disease characterized by early onset of skin cancers and freckles-like pigmented maculae in the sun-exposed sites. Although etiology of predisposition to UV-induced skin tumors in XP-A is well investigated as a repair deficiency in UV-induced DNA damage, the mechanism of exaggerated sunburn in patients with XP-A and whether UV-induced inflammation relates to skin tumor-prone phenotype remains to be elucidated. Using gene profiling of XP-A model mice, Xpa-deficient mice, we found that expression of CXCL1 in the skin and blood levels of in Xpa-deficient mice increased significantly after UVB exposure at an even a limited area in comparison to those of wild-type mice...
May 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28524137/-macular-blood-flow-in-glaucoma
#2
N I Kurysheva, E V Maslova, A V Trubilina, T D Ardzhevnishvili, A V Fomin
AIM: to assess macular blood flow in primary open-angle glaucoma (POAG) patients using optical coherence tomography angiography (OCT-A). MATERIAL AND METHODS: The study included 65 POAG patients and 22 age-matched healthy volunteers. Using OCT-A, blood flow parameters (Flow Area, Flow Index, and Vessel Density) were assessed in the para- and perifovea (0.6-2.5 mm and 2.5-5.5 mm, respectively) at the level of both superficial and deep vascular pexuses. Statistical analysis was performed with SPSS version 21 and MASS library of the R language...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28516002/transplantation-of-human-embryonic-stem-cell-derived-retinal-cells-into-the-subretinal-space-of-a-non-human-primate
#3
Jennifer R Chao, Deepak A Lamba, Todd R Klesert, Anna La Torre, Akina Hoshino, Russell J Taylor, Anu Jayabalu, Abbi L Engel, Thomas H Khuu, Ruikang K Wang, Maureen Neitz, Jay Neitz, Thomas A Reh
PURPOSE: Previous studies have demonstrated the ability of retinal cells derived from human embryonic stem cells (hESCs) to survive, integrate into the host retina, and mediate light responses in murine mouse models. Our aim is to determine whether these cells can also survive and integrate into the retina of a nonhuman primate, Saimiri sciureus, following transplantation into the subretinal space. METHODS: hESCs were differentiated toward retinal neuronal fates using our previously published technique and cultured for 60 to 70 days...
May 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28513254/peripapillary-sparing-in-rdh12-associated-leber-congenital-amaurosis
#4
Aakriti Garg, Winston Lee, Jesse D Sengillo, Rando Allikmets, Kartik Garg, Stephen H Tsang
BACKGROUND: Peripapillary sparing is a characteristic that is traditionally described as pathognomonic for Stargardt disease. MATERIALS AND METHODS: We present a multimodal assessment of four Leber congenital amaurosis (LCA) cases with congenital macular atrophy and severely attenuated electroretinogram findings caused by bilallelic mutations in RDH12. RESULTS: Fundus autofluorescence imaging revealed a general loss of retinal pigment epithelium across the macula except for the peripapillary region in both eyes of all patients...
May 17, 2017: Ophthalmic Genetics
https://www.readbyqxmd.com/read/28513113/retina-and-nerve-fiber-layer-thickness-in-eyes-with-thyroid-associated-ophthalmopathy
#5
Sharon Blum Meirovitch, Igal Leibovitch, Anat Kesler, David Varssano, Amir Rosenblatt, Meira Neuderfer
BACKGROUND: Thyroid-associated ophthalmopathy (TAO) is an inflammatory disease that affects the thyroid gland and the eye orbit. Of patients with TAO, 3%-5% have severe sight-threatening disease due to optic neuropathy Optical coherence tomography (OCT), the non-invasive imaging technology that yields high-resolution cross-sectional images of the retina, provides qualitative and quantitative data on the retina. OBJECTIVES: To apply this technique to quantitatively assess retinal nerve fiber layer (RNFL) and macular ring thicknesses in healthy subjects and in patients with TAO to determine their relationship to the severity of the orbital disease...
May 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28512424/optical-coherence-tomography-angiography-of-retinal-microvascular-changes-overlying-choroidal-nodules-in-neurofibromatosis-type-1
#6
Catherine Cassiman, Ingele Casteels, Peter Stalmans, Eric Legius, Julie Jacob
PURPOSE: To report 3 cases of neurofibromatosis type 1 (NF1) with choroidal nodules associated with retinal microvascular changes imaged with optical coherence tomography angiography (OCTA). METHODS: Small case series in 3 NF1 patients. OCTA examinations were performed by a trained examiner (J.J.) after pupillary dilation. A standard scan, centered over the macula measuring 6 × 6 mm and 3 × 3 mm was obtained according to the findings on standard color photography...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28508245/evaluation-of-macular-and-peripapillary-choroidal-thickness-macular-volume-and-retinal-nerve-fiber-layer-in-acromegaly-patients
#7
Serpil Yazgan, Dilek Arpaci, Haci Ugur Celik, Irem Isik
PURPOSE: To evaluate macular volume, retinal nerve fiber layer, and macular and peripapillary choroidal thickness in acromegaly patients. METHOD: In this prospective, case-control study, 31 patients with acromegaly and 32 healthy subjects were recruited. Only right eyes were evaluated. Macular choroidal thickness (CT) was measured at three points, peripapillary CT was measured at eight points, and macular volume was measured at nine areas in the central 6 mm circle zone by spectraldomain optical coherence tomography (OCT)...
May 15, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28508191/investigations-of-severity-level-measurements-for-diabetic-macular-oedema-using-machine-learning-algorithms
#8
S Murugeswari, R Sukanesh
BACKGROUND: The macula is an important part of the human visual system and is responsible for clear and colour vision. Macular oedema happens when fluid and protein deposit on or below the macula of the eye and cause the macula to thicken and swell. Normally, it occurs due to diabetes called diabetic macular oedema. Diabetic macular oedema (DME) is one of the main causes of visual impairment in patients. AIM: The aims of the present study are to detect and localize abnormalities in blood vessels with respect to macula in order to prevent vision loss for the diabetic patients...
May 15, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/28501377/structural-changes-associated-with-delayed-dark-adaptation-in-age-related-macular-degeneration
#9
Inês Laíns, John B Miller, Dong H Park, Edem Tsikata, Samaneh Davoudi, Safa Rahmani, Jonathan Pierce, Rufino Silva, Teresa C Chen, Ivana K Kim, Demetrios Vavvas, Joan W Miller, Deeba Husain
PURPOSE: To examine the relationship between dark adaptation (DA) and optical coherence tomography (OCT)-based macular morphology in age-related macular degeneration (AMD). DESIGN: Prospective, cross-sectional study. PARTICIPANTS: Patients with AMD and a comparison group (>50 years) without any vitreoretinal disease. METHODS: All participants were imaged with spectral-domain OCT and color fundus photographs, and then staged for AMD (Age-related Eye Disease Study system)...
May 10, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28499747/preoperative-posturing-of-patients-with-macula-on-retinal-detachment-reduces-progression-toward-the-fovea
#10
Jan H de Jong, Juan P Vigueras-Guillén, Tiarah C Simon, Reinier Timman, Tunde Peto, Koenraad A Vermeer, Jan C van Meurs
PURPOSE: Traditionally, preoperative posturing consisting of bed rest and positioning is prescribed to patients with macula-on retinal detachment (RD) to prevent RD progression and detachment of the fovea. Execution of such advice can be cumbersome and expensive. This study aimed to investigate if preoperative posturing affects the progression of RD. DESIGN: Prospective cohort study. PARTICIPANTS: Ninety-eight patients with macula-on RD were included...
May 9, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28499163/the-diabetic-retinopathy-barometer-study-global-perspectives-on-access-to-and-experiences-of-diabetic-retinopathy-screening-and-treatment
#11
D Cavan, L Makaroff, J da Rocha Fernandes, M Sylvanowicz, P Ackland, J Conlon, D Chaney, A Malhi, J Barratt
AIM: To assess the level of awareness, prevention and treatment of Diabetic Eye Disease (DED) comprising Diabetic Retinopathy (DR) and Diabetic Macula Edema (DME) retinopathy among adults with diabetes and health professionals. METHODS: The Diabetic Retinopathy Barometer Study consisted of a qualitative study, which consisted of semi-structured interviews, and a quantitative study using online surveys for adults with diabetes and for health professionals. RESULTS: A total of 4340 adults with diabetes and 2329 health professionals participated in the surveys...
April 4, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28492432/vascular-distortion-and-dragging-related-to-apparent-tissue-contraction-in-macular-telangiectasis-type-2
#12
Richard F Spaide, Rosa D Marco, Lawrence A Yannuzzi
PURPOSE: To examine the alterations in retinal vascular morphology over an extended follow-up in eyes with macular telangiectasis Type 2 (MacTel2). METHODS: Eyes with high-quality digital photographs were evaluated. The geometric distortion in baseline images required to emulate the follow-up images was determined and vectors were made that represented the direction and magnitude of changes, to create a warp field. Optical coherence tomography and optical coherence tomography angiography evaluation of the retina was performed...
May 10, 2017: Retina
https://www.readbyqxmd.com/read/28491467/association-between-asymptomatic-unilateral-internal-carotid-artery-stenosis-and-electrophysiological-function-of-the-retina-and-optic-nerve
#13
Anna Machalińska, Aleksandra Kowalska-Budek, Miłosz Piotr Kawa, Arkadiusz Kazimierczak, Krzysztof Safranow, Marta Kirkiewicz, Grażyna Wilk, Wojciech Lubiński, Piotr Gutowski, Bogusław Machaliński
Purpose. This study was designed to assess retinal and optic nerve bioelectrical function in patients with unilateral asymptomatic but hemodynamically significant internal carotid artery stenosis (ICAS). Methods. Forty-two subjects with a diagnosis of unilateral ICAS and 34 controls were analyzed. Full-field electroretinogram (ERG), pattern electroretinogram (PERG), and pattern visual-evoked potentials, as well as optical coherence tomography and ophthalmological examination, were performed. Data analysis included eyes ipsilateral to ICAS (EIS) and eyes contralateral to ICAS (ECS)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28488258/optical-coherence-tomography-as-a-marker-of-neurodegeneration-in-patients-with-wilson-s-disease
#14
Ewa Langwińska-Wośko, Tomasz Litwin, Karolina Dzieżyc, Michał Karlinski, Anna Członkowska
Wilson's disease (WD) is an inherited autosomal recessive disorder that leads to pathological copper accumulation in different organs. Optical coherence tomography (OCT) is proposed as a marker of neurodegeneration in many neurological diseases. Thinning of the total retinal nerve fiber layer (RNFL) and macular thickness (Mth) examined by OCT was detected in patients with WD, especially those with brain magnetic resonance imaging changes. The aim of this study was to evaluate the relationship between OCT parameters and the progression of neurological signs measured by the Unified Wilson's Disease Rating Scale (UWDRS) in patients with WD...
May 9, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28481626/retinal-hemorrhage-in-a-high-altitude-aid-post-volunteer-doctor-a-case-report
#15
Sanjeeb Sudarshan Bhandari, Pranawa Koirala, Nirajan Regmi, Sushil Pant
Bhandari, Sanjeeb Sudarshan, Pranawa Koirala, Nirajan Regmi, and Sushil Pant. Retinal hemorrhage in a high-altitude aid post volunteer doctor: a case report. High Alt Med Biol 00:000-000, 2017.-High-altitude retinal hemorrhages (HARHs) are seen at altitudes more than 3000 m, are usually multiple, flame shaped, and adjacent to blood vessels. Development near the macula causes blurring of vision, otherwise, they are symptomless and self-limiting. They often develop during the first few days after ascent to high altitude and subjects often suffer from acute mountain sickness (AMS) or high-altitude cerebral edema (HACE)...
May 8, 2017: High Altitude Medicine & Biology
https://www.readbyqxmd.com/read/28480495/retinopathy-with-central-oedema-in-an-ins-c94y-transgenic-pig-model-of-long-term-diabetes
#16
Kristina J H Kleinwort, Barbara Amann, Stefanie M Hauck, Sieglinde Hirmer, Andreas Blutke, Simone Renner, Patrizia B Uhl, Karina Lutterberg, Walter Sekundo, Eckhard Wolf, Cornelia A Deeg
AIMS/HYPOTHESIS: Diabetic retinopathy is a severe complication of diabetes mellitus that often leads to blindness. Because the pathophysiology of diabetic retinopathy is not fully understood and novel therapeutic interventions require testing, there is a need for reliable animal models that mimic all the complications of diabetic retinopathy. Pig eyes share important anatomical and physiological similarities with human eyes. Previous studies have demonstrated that INS (C94Y) transgenic pigs develop a stable diabetic phenotype and ocular alterations such as cataracts...
May 8, 2017: Diabetologia
https://www.readbyqxmd.com/read/28470647/torpedo-maculopathy-associated-with-choroidal-neovascularization
#17
D Jurjevic, C Böni, D Barthelmes, K Fasler, M Becker, S Michels, J Stemmle, C Herbort, S A Zweifel
Background Torpedo maculopathy is a very rare, congenital, usually unilateral hypopigmented lesion in the temporal macula. Material and Methods This retrospective case series describes three patients with torpedo maculopathy. Results The first two cases demonstrate typical clinical and imaging findings of torpedo maculopathy in asymptomatic patients. The third case relates to a symptomatic young patient with a torpedo lesion, a smaller satellite lesion, and evidence of choroidal neovascularization confirmed by fluorescence angiography...
April 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28469643/impacts-of-the-retinal-environment-and-photoreceptor-type-on-functional-regeneration
#18
REVIEW
Michèle G DuVal, W Ted Allison
Retinal regeneration is a promising central nervous system (CNS) target amongst the various stem cell therapy pursuits, due to its accessibility for manipulation and its disposition towards longitudinal monitoring of treatment safety and efficacy. We offer our perspective on current hurdles towards functional regeneration of cone photoreceptors. Cones are key: For patients suffering vision loss, cone photoreceptors are a required cellular component to restoring daytime vision, colour vision, and high acuity vision...
March 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28456809/samuel-thomas-soemmerring-1755-1830-the-naming-of-cranial-nerves
#19
John M S Pearce
Samuel Thomas Soemmerring was a Prussian polymathic doctor with remarkable achievements in anatomy, draftsmanship and inventions. His naming of 12 pairs of cranial nerves in his graduation thesis is of particular importance. He also gave original descriptions of the macula, sensory pathways and of the substantia nigra. His non-medical contributions were diverse and included criticism of the guillotine, invention of a telegraphic system, and discoveries in palaeontology.
April 29, 2017: European Neurology
https://www.readbyqxmd.com/read/28456419/choroidal-imaging-with-swept-source-optical-coherence-tomography-in-patients-with-birdshot-chorioretinopathy-choroidal-reflectivity-and-thickness
#20
Anna I Dastiridou, Elodie Bousquet, Laura Kuehlewein, Tudor Tepelus, Dominique Monnet, Sawsen Salah, Antoine Brezin, Srinivas R Sadda
PURPOSE: To characterize choroidal thickness and choroidal reflectivity in the eyes of patients with birdshot chorioretinopathy (BSCR). DESIGN: Cross-sectional observational study. PARTICIPANTS: Two hundred twenty BSCR patients and 59 healthy controls. METHODS: Patients with BSCR and healthy controls underwent imaging of the macula in both eyes with a swept-source optical coherence tomography device (DRI-OCT1 Atlantis; Topcon)...
April 26, 2017: Ophthalmology
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