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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
#1
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/27916026/role-of-cyclic-amp-in-the-eye-of-glaucoma
#2
Myoung Sup Shim, Keun-Young Kim, Won-Kyu Ju
Glaucoma is characterized by a slow and progressive degeneration of optic nerve, including retinal ganglion cell (RGC) axons in the optic nerve head (ONH), leading to visual impairment. Despite the high prevalence, the biological basis of glaucoma pathogenesis still is not yet fully understood, and the factors contributing to its progression are currently not well characterized. Intraocular pressure (IOP) is the only modifiable risk factor, and reduction of IOP is the standard treatment for glaucoma. However, lowering IOP itself is not always effective for preserving visual function in patients with primary open-angle glaucoma...
December 5, 2016: BMB Reports
https://www.readbyqxmd.com/read/27880806/choroidal-round-hyporeflectivities-in-geographic-atrophy
#3
Eleonora Corbelli, Riccardo Sacconi, Luigi Antonio De Vitis, Adriano Carnevali, Alessandro Rabiolo, Lea Querques, Francesco Bandello, Giuseppe Querques
PURPOSE: In geographic atrophy (GA), choroidal vessels typically appear on structural optical coherence tomography (OCT) as hyperreflective round areas with highly reflective borders. We observed that some GA eyes show choroidal round hyporeflectivities with highly reflective borders beneath the atrophy, and futher investigated the charcteristcs by comparing structural OCT, indocyanine green angiography (ICGA) and OCT angiography (OCT-A). METHODS: Round hyporeflectivities were individuated from a pool of patients with GA secondary to non-neovascular age-related macular degeneration consecutively presenting between October 2015 and March 2016 at the Medical Retina & Imaging Unit of the University Vita-Salute San Raffaele...
2016: PloS One
https://www.readbyqxmd.com/read/27876464/m%C3%A3-ller-stem-cell-dependent-retinal-regeneration
#4
REVIEW
Annu Chohan, Usha Singh, Atul Kumar, Jasbir Kaur
Müller Stem cells to treat ocular diseases has triggered enthusiasm across all medical and scientific communities. Recent development in the field of stem cells has widened the prospects of applying cell based therapies to regenerate ocular tissues that have been irreversibly damaged by disease or injury. Ocular tissues such as the lens and the retina are now known to possess cell having remarkable regenerative abilities. Recent studies have shown that the Müller glia, a cell found in all vertebrate retinas, is the primary source of new neurons, and therefore are considered as the cellular basis for retinal regeneration in mammalian retinas...
November 19, 2016: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/27855445/-retinal-and-cortical-activation-by-electrical-stimulation-with-retina-implants
#5
A Stett, U T Eysel
In Germany, about 30,000 to 40,000 people suffer from retinitis pigmentosa (RP), which ultimately results in blindness. The only aid to blind RP patients are retinal implants: These have been under development for several years and have now been approved as a medical product. Retinal implants produce visual perceptions in response to electrical stimulation of the degenerated retina and are useful in the everyday life of blind people. However, the currently achievable quality of vision is such that people with a retinal implant are still legally blind...
November 2016: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/27847624/prevalence-of-outer-retinal-tubulation-in-eyes-with-choroidal-neovascularization
#6
Richard Geraldo Giachetti Filho, Leandro Cabral Zacharias, Thaís Vera Monteiro, Rony Carlos Preti, Sérgio Gianoti Pimentel
BACKGROUND: Outer retinal tubulations (ORTs) are branching tubular structures located in the outer nuclear layer of the retina. The goal of this study is to determine the prevalence of ORTs observed in eyes with choroidal neovascularization (CNV) undergoing treatment with anti-angiogenic intravitreous injection (IVI) with anti-VEGF (vascular endothelial growth factor) at the Ophthalmology Department of a tertiary hospital in São Paulo, Brazil. METHODS: This is a descriptive study based on medical charts and Spectral-domain Optical Coherence Tomography (Sd-OCT) scans of 142 patients (158 eyes) treated between 2012 and 2014 with IVI of anti-VEGF for CNV...
2016: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/27832339/vitrectomy-and-scleral-imbrication-in-patients-with-myopic-traction-maculopathy-and-macular-hole-retinal-detachment
#7
Yoshimasa Ando, Akito Hirakata, Arisa Ohara, Reiji Yokota, Tadashi Orihara, Kazunari Hirota, Takashi Koto, Makoto Inoue
PURPOSE: To determine the outcomes of vitrectomy with scleral imbrication in highly myopic eyes with either myopic traction maculopathy (MTM) or macular hole retinal detachment (MHRD). METHODS: The medical records of 17 patients who had undergone vitrectomy with internal limiting membrane (ILM) peeling and scleral imbrication for MTM or MHRD were reviewed. The best-corrected visual acuities (BCVAs), the axial length, the macular hole (MH) closure rate, and the shape of the posterior segment determined by optical coherence tomography were evaluated...
November 10, 2016: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/27831970/spontaneous-closure-of-a-macular-hole-after-four-failed-vitrectomies-in-the-setting-of-nf-1
#8
Kendall W Wannamaker, Robert A Sharpe, Jan A Kylstra
PURPOSE: To present the case of a patient who developed spontaneous closure of an idiopathic macular hole after four failed attempts at surgical closure. METHODS: This is a retrospective case review of the medical record of a single patient. No statistical analysis was performed. The patient is a 71-year-old white woman with neurofibromatosis Type 1 who presented to the retina clinic of one of the authors. RESULTS: The patient underwent four vitrectomies with long acting gas by two surgeons over the course of 2 years...
November 9, 2016: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/27828629/dermatoscopic-findings-of-pigmented-purpuric-dermatosis
#9
Dilek Biyik Ozkaya, Nazan Emiroglu, Ozlem Su, Fatma Pelin Cengiz, Anil Gulsel Bahali, Pelin Yildiz, Cuyan Demirkesen, Nahide Onsun
Background: Pigmented purpuric dermatosis is a chronic skin disorder of unknown aetiology characterised by symmetrical petechial and pigmented macules, often confined to the lower limbs. The aetiology of pigmented purpuric dermatosis is unknown. Dermatoscopy is a non-invasive diagnostic technique that allows the visualisation of morphological features invisible to the naked eye; it combines a method that renders the corneal layer of the skin translucent with an optical system that magnifies the image projected onto the retina...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/27822434/seven-year-evaluation-of-idiopathic-multiple-retinal-pigment-epithelium-detachments
#10
Pawel Krasnicki, Diana Dmuchowska, Ewa Zukowska, Zofia Mariak
Objective: To analyze a 7-year natural history of idiopathic multiple retinal pigment epithelium (RPE) detachment based on optical coherence tomography (OCT) images. Methods: Case report. SD-OCT imaging (Topcon 3D OCT-1000). Results: A 55-year-old female presented with three foci of pigment epithelium detachment (PED) in her left eye. Her past ophthalmic and medical history was uneventful. The patient's visual acuity in both eyes was 1.0 throughout the follow-up period. Fluorescein angiography images are shown...
2016: GMS Ophthalmology Cases
https://www.readbyqxmd.com/read/27820952/the-effect-on-retinal-structure-and-function-of-15-specific-abca4-mutations-a-detailed-examination-of-82-hemizygous-patients
#11
Ana Fakin, Anthony G Robson, John Pei-Wen Chiang, Kaoru Fujinami, Anthony T Moore, Michel Michaelides, Graham E Holder, Andrew R Webster
Purpose: To determine the effect of 15 individual ABCA4 mutations on disease severity. Methods: Eighty-two patients harboring 15 distinct ABCA4 mutations in trans with null (hemizygous), 10 homozygous, and 20 nullizygous patients were recruited. Age of onset was determined from medical histories. Electroretinography (ERG) responses were classified into three groups (normal; cone dysfunction; cone and rod dysfunction). The dark-adapted bright-flash (DA 10.0) a-wave amplitudes and the light-adapted flicker ERG (LA 3...
November 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27816749/use-of-multicolor-imaging-in-the-assessment-of-suspected-papilledema-in-20-consecutive-children
#12
Andrew Malem, Gabriella De Salvo, Stephanie West
PURPOSE: To investigate the use of MultiColor Scanning Laser Imaging as an adjunct to traditional imaging modalities in the assessment of children with suspected disk swelling. METHODS: In this study of 20 consecutive children with suspected papilledema, MultiColor imaging was performed on all patients in addition to fundus examination, fundus autofluorescence, disk spectral domain optical coherence tomography (SD-OCT), and disk retinal nerve fiber layer thickness (RNFL) measurement...
November 2, 2016: Journal of AAPOS: the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
https://www.readbyqxmd.com/read/27802487/cerebral-small-vessel-disease-in-branch-retinal-artery-occlusion
#13
Kwan Hyuk Cho, Chi Kyung Kim, Se Joon Woo, Kyu Hyung Park, Sang Jun Park
Purpose: We investigated the pathophysiology of branch retinal artery occlusion (BRAO) by evaluating the retina, brain, and carotid artery in patients with BRAO. Methods: This study was a retrospective registry study. We used 46 eyes from 46 patients with acute BRAO and evaluated the medical history, including previous cardiovascular disease, and compared brain magnetic resonance images (MRI) and carotid artery stenosis state between the embolic BRAO group and nonembolic BRAO group...
October 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27800258/secondary-glaucoma-associated-with-encircling-scleral-buckle-migration-into-the-cornea
#14
Şengül Özdek, Murat Hasanreisoğlu, Ufuk Adıgüzel, Zeynep Aktaş
Transmuscular migration of the encircling band through rectus muscles and straddling of the cornea has only been reported in a few cases previously in the literature. This rare condition has never been associated with glaucoma. In this report, we aimed to describe a unique case with transmuscular migration of encircling buckle as a probable cause of glaucoma. A 17-year-old female presented with transmuscular migration of buckle and high intraocular pressure (IOP). Limbal/corneal migration of the silicone band was thought to be the main reason for the IOP rise; therefore, scleral band removal was performed...
January 2016: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/27800199/-magic-bullet-eccentric-macular-hole-as-a-complication-from-dexamethasone-implant-insertion
#15
Logan Christensen, Riley Sanders, Jeffrey Olson
Introduction. Intravitreal drug injections and implants are generally safe but do carry some risk, from both the procedure itself and adverse effects of the medications. We report a case of an eccentric macular hole after dexamethasone implant (Ozurdex®) administration. Ex vitro force testing was performed to evaluate dexamethasone implant injection force. Methods. Five dexamethasone implant (Ozurdex) applicators were placed 16 mm from a force plate and the force of the injected dexamethasone pellet was recorded in Newtons...
2016: Case Reports in Ophthalmological Medicine
https://www.readbyqxmd.com/read/27784274/preserved-retinal-sensitivity-in-spatial-correspondence-to-an-intrachoroidal-cavitation-area-with-full-thickness-retinal-defect-a-case-report
#16
Yoshiyuki Kita, Makoto Inoue, Gábor Hollό, Ritsuko Kita, Masahiko Sano, Akito Hirakata
BACKGROUND: Intrachoroidal cavitation (ICC) in the temporal peripapillary area is a relatively frequent finding in high myopia. However, ICC associated with a full thickness retinal defect rarely observed. We report an unusual case of ICC combined with a full thickness retinal defect in the papillo-macular bundle, in which the spatially corresponding visual field sensitivity was preserved. CASE PRESENTATION: A high myopic and pseudophakic left eye of a 79-year-old Japanese woman was evaluated with swept source optical coherence tomography (SS-OCT) and Humphrey 30-2 visual field testing for moderate glaucoma...
October 26, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27780174/clinical-spectrum-of-macular-foveal-capillaries-evaluated-with-optical-coherence-tomography-angiography
#17
Maria V Cicinelli, Adriano Carnevali, Alessandro Rabiolo, Lea Querques, Ilaria Zucchiatti, Vincenzo Scorcia, Francesco Bandello, Giuseppe Querques
PURPOSE: To describe macular-foveal capillaries (MFC) by means of optical coherence tomography angiography and to identify the clinical spectrum of this angiographic feature. METHODS: Patients with MFC presenting at the Medical Retina & Imaging Unit of the Department of Ophthalmology, University Vita-Salute San Raffaele in Milan were recruited. Patients underwent a complete ophthalmologic examination that included slit-lamp examination, fundus examination, measurement of best-corrected visual acuity, fundus autofluorescence, and spectral-domain optical coherence tomography (Spectralis HRA + OCT; Heidelberg Engineering, Heidelberg, Germany)...
July 12, 2016: Retina
https://www.readbyqxmd.com/read/27764184/comparison-of-the-inverted-internal-limiting-membrane-flap-technique-and-the-internal-limiting-membrane-peeling-for-macular-hole-with-retinal-detachment
#18
Takehiro Matsumura, Yoshihiro Takamura, Takeshi Tomomatsu, Shogo Arimura, Makoto Gozawa, Akira Kobori, Masaru Inatani
PURPOSE: To evaluate the efficacy of the inverted internal limiting membrane (ILM) flap technique in vitrectomy for macular hole (MH) with retinal detachment (RD) compared with vitrectomy using ILM peeling. METHODS: A retrospective case series study was performed. Twenty-two eyes of 22 patients who underwent vitrectomy for MH with RD and followed-up more than 12 months after the surgery were included in this study. We retrospectively reviewed the medical records of patients who underwent vitrectomy with inverted ILM flap technique or vitrectomy with ILM peeling...
2016: PloS One
https://www.readbyqxmd.com/read/27762314/aberration-free-volumetric-high-speed-imaging-of-in-vivo-retina
#19
Dierck Hillmann, Hendrik Spahr, Carola Hain, Helge Sudkamp, Gesa Franke, Clara Pfäffle, Christian Winter, Gereon Hüttmann
Certain topics in research and advancements in medical diagnostics may benefit from improved temporal and spatial resolution during non-invasive optical imaging of living tissue. However, so far no imaging technique can generate entirely diffraction-limited tomographic volumes with a single data acquisition, if the target moves or changes rapidly, such as the human retina. Additionally, the presence of aberrations may represent further difficulties. We show that a simple interferometric setup-based on parallelized optical coherence tomography-acquires volumetric data with 10 billion voxels per second, exceeding previous imaging speeds by an order of magnitude...
October 20, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27759581/outcomes-of-an-intravitreal-injection-clinic
#20
Elizabeth A Atchison, Ahmed F Omar, Raymond Iezzi, Andrew J Barkmeier, Sophie J Bakri
PURPOSE: To examine the safety outcomes of an intravitreal injection-only clinic where patients needing long-term anti-vascular endothelial growth factor therapy are treated with injections at a predetermined interval for a set number of injections without an accompanying clinic visit. METHODS: This is a retrospective chart review of all patients with exudative macular degeneration treated in an intravitreal injection clinic over a 4-year period. Data on the outcome measures of interest were gathered from electronic medical records...
October 18, 2016: Retina
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