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Retinal vascular disease

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https://www.readbyqxmd.com/read/28427063/optical-coherence-tomography-angiography-in-diabetic-maculopathy
#1
Gabriel Coscas, Marco Lupidi, Florence Coscas
Fluorescein angiography (FA) and indocyanine green angiography have provided information about the normal retinal and choroidal anatomy, nearly comparable to histological findings. These tests have been fundamental in the evaluation of all retinal and choroidal vascular diseases and have allowed clinicians to define and diagnose several pathological conditions. FA became the "gold standard" in retinal imaging due to the capacity to visualize the retinal capillary bed and its changes, both in the macular area and in the periphery...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28427061/emerging-insights-into-pathogenesis
#2
Edoardo Midena, Elisabetta Pilotto
Diabetic retinopathy (DR) is a frequent complication of diabetes mellitus (DM). Persistent hyperglycemia leads to the activation of multiple cellular pathways involved in the pathogenesis of DR, resulting in increased inflammation, oxidative stress, and vascular dysfunction. DR has been considered a "chronic, low-grade inflammatory disease of the retina". However, an increasing body of evidence suggests that inflammation and neurodegeneration both occur in human diabetes even before the development of clinical signs of DR...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28424147/treatment-of-leukoencephalopathy-with-calcifications-and-cysts-with-bevacizumab
#3
Alex J Fay, Allison A King, Joshua S Shimony, Yanick J Crow, Jan E Brunstrom-Hernandez
BACKGROUND: Leukoencephalopathy with calcifications and cysts is a rare, autosomal recessive cerebral microangiopathy that causes progressive white matter disease, calcifications, and cysts within the brain. It is typically associated with slowly progressive psychomotor regression, seizures, and movement disorders. Although leukoencephalopathy with calcifications and cysts affects only the central nervous system, it demonstrates remarkable neuropathologic and radiologic overlap with Coats plus, a disorder of small vessels of the brain, eyes, gastrointestinal tract, and bone...
March 23, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/28423385/guidelines-for-the-management-of-diabetic-macular-edema-by-the-european-society-of-retina-specialists-euretina
#4
Ursula Schmidt-Erfurth, Jose Garcia-Arumi, Francesco Bandello, Karina Berg, Usha Chakravarthy, Bianca S Gerendas, Jost Jonas, Michael Larsen, Ramin Tadayoni, Anat Loewenstein
Diabetic retinal disease is envisioned to become the plague of the coming decades with a steep increase of worldwide diabetes incidence followed by a substantial rise in retinal disease. Improvements in diagnostic and therapeutic care have to cope with this dilemma in a clinically and socioeconomically efficient manner. Laser treatment has found a less destructive competitor in pharmacological treatments. As a consequence of recent rigorous clinical trials, laser photocoagulation is no longer recommended for the treatment of diabetic macular edema (DME), and anti-vascular endothelial growth factor therapy has emerged as first-line therapy...
April 20, 2017: Ophthalmologica. Journal International D'ophtalmologie
https://www.readbyqxmd.com/read/28422378/cellular-retinoic-acid-bioavailability-in-various-pathologies-and-its-therapeutic-implication
#5
REVIEW
Makoto Osanai
Retinoic acid (RA), an active metabolite of vitamin A, is a critical signaling molecule in various cell types. We found that RA depletion caused by expression of the RA-metabolizing enzyme CYP26A1 promotes carcinogenesis, implicating CYP26A1 as a candidate oncogene. Several studies of CYP26s have suggested that the biological effect of RA on target cells is primarily determined by "cellular RA bioavailability", which is defined as the RA level in an individual cell, rather than by the serum concentration of RA...
April 19, 2017: Pathology International
https://www.readbyqxmd.com/read/28419863/cellular-stress-response-in-human-m%C3%A3-ller-cells-mio-m1-after-bevacizumab-treatment
#6
Monique Matsuda, Paloma Gava Krempel, Mônica Valeria Marquezini, Alfred Sholl-Franco, Amanda Lameu, Mário Luiz R Monteiro, Nádia Campos de Oliveira Miguel
Bevacizumab, an anti-vascular endothelial growth factor (VEGF) agent, is widely used in the treatment of retinal vascular diseases. However, due to the essential role Müller cell derived-VEGF plays in the maintenance of retinal neurons and glial cells, cell viability is likely to be affected by VEGF inhibition. We therefore evaluated the effect of bevacizumab-induced VEGF inhibition on Müller cells (MIO-M1) in vitro. MIO-M1 cells were cultured for 12 or 24 h in media containing bevacizumab at 0.25 or 0.5 mg/mL...
April 15, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28413487/vandetanib-and-adam-inhibitors-synergistically-attenuate-the-pathological-migration-of-ebv-infected-retinal-pigment-epithelial-cells-by-regulating-the-vegf-mediated-mapk-pathway
#7
Daejin Kim, Hyun-Suk Ko, Ga Bin Park, Dae Young Hur, Yeong Seok Kim, Jae Wook Yang
The extracellular signals induced by vascular endothelial growth factor (VEGF) are implicated in choroidal neovascularization (CNV) and thus, are associated with vision-limiting complications in the human retina. Vandetanib is an oral anticancer drug that selectively inhibits the activities of VEGF receptor and epidermal growth factor receptor tyrosine kinase; however, the effects of vandetanib on VEGF in retinal pigment epithelial (RPE) cells have not yet been studied. In the present study, a combined treatment of vandetanib and a disintegrin and metalloproteinase (ADAM) protein inhibitors were used to assess the regulation of Epstein-Barr virus (EBV)-infected ARPE19 cells (ARPE19/EBV) migration as a model of CNV...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28403072/retinal-microvascular-alterations-related-to-diabetes-assessed-by-optical-coherence-tomography-angiography-a-cross-sectional-analysis
#8
Julien Gozlan, Pierre Ingrand, Olivier Lichtwitz, Agathe Cazet-Supervielle, Léa Benoudis, Michele Boissonnot, Samy Hadjadj, Nicolas Leveziel
Fluorescein angiography has been so far the gold-standard test to assess diabetic macular ischemia (DMI), a cause of irreversible visual impairment in diabetic patients. The aim of this study was to investigate foveal avascular zone (FAZ) and perifoveal microcirculation changes in eyes with nonproliferative diabetic retinopathy (NPDR) using optical coherence tomography angiography (OCTA), a new and noninvasive vascular imaging technique.Cross-sectional study including eyes of diabetic patients with NPDR.All patients underwent medical history, best-corrected visual acuity (BCVA) measurement, slit-lamp and fundus examination, multicolor imaging, SD-OCT, and swept-source OCT...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28402713/optical-biometry-derived-axial-length-measurements-following-intravitreal-anti-vascular-endothelial-growth-factor-treatment-for-macular-edema
#9
George D Kymionis, Athanassios Giarmoukakis, Ioanna K Apostolidi, Styliani V Blazaki, Konstantinos I Tsoulnaras, Joanna Moschandrea, Sofia Panagopoulou, Miltiadis K Tsilimbaris
PURPOSE: To evaluate axial length (AL) alterations in patients with macular disease over the course of intravitreal anti-vascular endothelial growth factor (anti-VEGF) treatment. METHODS: In this prospective, comparative study, 33 patients with macular edema underwent unilaterally intravitreal anti-VEGF therapy and were followed for two months; the contralateral eyes were considered as controls. Central retinal thickness (CRT) was measured with spectral-domain optical coherence tomography and AL with an IOL-Master optical biometer...
April 12, 2017: Seminars in Ophthalmology
https://www.readbyqxmd.com/read/28395298/cytokines-and-chemokines-involved-in-acute-retinal-necrosis
#10
Lenneke de Visser, Joke H de Boer, Ger T Rijkers, Karin Wiertz, Henk-Jan van den Ham, Rob de Boer, Anton M van Loon, Aniki Rothova, Jolanda D F de Groot-Mijnes
Purpose: To investigate which cytokines and chemokines are involved in the immunopathogenesis of acute retinal necrosis (ARN), and whether cytokine profiles are associated with clinical manifestations, such as visual outcome. Methods: Serum and aqueous humor (AH) samples of 19 patients with ARN were analyzed by multiplex immunoassay. Infectious controls consisted of 18 patients with rubella virus-associated Fuchs' uveitis and 20 patients with ocular toxoplasmosis all confirmed by intraocular fluid analyses...
April 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28393793/transient-cortical-blindness-following-intracardiac-repair-of-congenital-heart-disease-in-an-11-year-old-boy
#11
Saswata Bharati, Manish Kumar Sharma, Amitabha Chattopadhay, Debasis Das
Postoperative blindness (PB) primarily involves reception and conductance parts of the visual pathway due to ischemia following cessation of blood supply, for example, retinal vascular occlusion. Although a rare cause of PB, cortical blindness (CB), which results from ischemia/infarction of visual cortex, has a poor outcome due to its mostly nonreversible nature. Ischemic optic neuropathy is the most common cause of PB following cardiac surgeries. CB following cardiac surgeries involving cardiopulmonary bypass has been rarely reported...
April 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28393562/intravitreal-anti-vegf-treatment-for-retinopathy-of-prematurity-in-infants-with-active-adenoviral-keratoconjunctivitis
#12
Yusuf Koçluk, Emine Alyamaç Sukgen
PURPOSE: To evaluate the results of intravitreal anti-vascular endothelial growth factor (anti-VEGF) treatment for retinopathy of prematurity (ROP) in infants with active adenoviral keratoconjunctivitis (AKC). MATERIAL AND METHODS: A retrospective analysis was performed using the medical records of all infants treated with intravitreal injections of anti-VEGF agents during an AKC outbreak previously reported in the literature at a tertiary center for treatment of ROP...
April 10, 2017: Cutaneous and Ocular Toxicology
https://www.readbyqxmd.com/read/28393036/analysis-of-normal-human-retinal-vascular-network-architecture-using-multifractal-geometry
#13
Ştefan Ţălu, Sebastian Stach, Dan Mihai Călugăru, Carmen Alina Lupaşcu, Simona Delia Nicoară
AIM: To apply the multifractal analysis method as a quantitative approach to a comprehensive description of the microvascular network architecture of the normal human retina. METHODS: Fifty volunteers were enrolled in this study in the Ophthalmological Clinic of Cluj-Napoca, Romania, between January 2012 and January 2014. A set of 100 segmented and skeletonised human retinal images, corresponding to normal states of the retina were studied. An automatic unsupervised method for retinal vessel segmentation was applied before multifractal analysis...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28388936/intestinal-and-neurological-involvement-in-behcet-disease-a-clinical-case
#14
Romina Gallizzi, Dominique De Vivo, Simona Valenti, Caterina Pidone, Carmelo Romeo, Rosario Caruso, Claudio Romano
BACKGROUND: Behcet's disease (BD) is a chronic immune-mediated, inflammatory disorder which may affect a number of different systems (oral and genital mucosa, eyes, skin, vascular district, joints, gastrointestinal tract and nervous system). Neurological manifestations are present in 5-10%, and gastrointestinal tract involvement in 10-15% of cases. The simultaneous involvement of two systems, neurological and gastrointestinal tract, is very rare and represents the aim of our case report...
April 7, 2017: Italian Journal of Pediatrics
https://www.readbyqxmd.com/read/28386036/silent-brain-infarctions-and-leukoaraiosis-in-patients-with-retinal-ischemia-a-prospective-single-center-observational-study
#15
Amir Golsari, Diana Bittersohl, Bastian Cheng, Pia Griem, Christoph Beck, Andrea Hassenstein, Max Nedelmann, Tim Magnus, Jens Fiehler, Christian Gerloff, Götz Thomalla
BACKGROUND AND PURPOSE: We aimed to determine the incidence of co-occurring cerebral ischemia, extent of cerebral small vessel disease, and vascular risk profile of patients with acute retinal ischemia. METHODS: RETIS (Frequency of Acute Silent Brain Infarction and Systematic Evaluation of Stroke Risk in Retinal Ischemia) was a single-center, prospective, observational study comprising ophthalmologic examination, brain magnetic resonance imaging, and extensive diagnostic work-up of vascular risk factors and stroke cause...
April 6, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28385272/-retinopathy-of-prematurity
#16
REVIEW
V Promelle, S Milazzo
Retinopathy of prematurity is a retinal vasoproliferative disease affecting extremely preterm infants exposed to high concentrations of oxygen therapy. Infants born before 32 post-menstrual weeks or with a birth weight of less than 1500g should systematically have a dilated fundus examination. The time of screening and schedule for follow-up are guided by the various risk factors. This disease results from immaturity of the peripheral retinal vessels at the time of premature birth. The classification of ROP depends on the anteroposterior extent of involvement (from center to periphery: zone I, II and III), its extension in 30° sectors (clock hours) and its stage (stage 1 to 5)...
April 3, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28384676/microscope-integrated-optical-coherence-tomography-angiography-in-the-operating-room-in-young-children-with-retinal-vascular-disease
#17
Xi Chen, Christian Viehland, Oscar M Carrasco-Zevallos, Brenton Keller, Lejla Vajzovic, Joseph A Izatt, Cynthia A Toth
Importance: Intraoperative optical coherence tomography (OCT) has gained traction as an important adjunct for clinical decision making during vitreoretinal surgery, and OCT angiography (OCTA) has provided novel insights in clinical evaluation of retinal diseases. To date, these two technologies have not been applied in combination to evaluate retinal vascular disease in the operating suite. Objective: To conduct microscope-integrated, swept-source OCTA (MIOCTA) in children with retinal vascular disease...
April 6, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28380651/-optical-coherence-tomography-angiography-in-diagnosis-and-post-treatment-assessment-of-hemangioblastomas-in-hippel-lindau-disease
#18
S J Lang, C Evers, B Cakir, F Ludwig, C Lange, H Agostini
Background Optical coherence tomography angiography (OCTA) offers the possibility to visualize, non-invasively, blood vessels of the retina. In vascular tumors, especially hemangioblastomas in Hippel-Lindau disease, new information can be obtained with OCTA concerning structure of the tumor, tumor activity and treatment success. Patients Ten eyes of 10 patients with retinal hemangioblastoma in Hippel-Lindau disease were included. The age of the patients ranged from 19 years to 65 years (median 44 years). Results A total of 10 active and one inactive hemangioblastomas were examined with OCTA...
April 5, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28380648/-polysialic-acid-for-immunomodulation-in-an-animal-model-for-wet-age-related-macular-degeneration-amd
#19
Thomas Langmann, Sascha Fauser
Background Chronic activation of the innate immune system is a hallmark of retinal degenerative diseases, including age-related macular degeneration (AMD). Overt microglia and macrophage reactivity, as well as dysregulation of the alternative complement system, trigger and sustain retinal degeneration. It is now accepted that there exists a vicious cycle of mononuclear phagocyte reactivity, abnormal intrinsic complement activation, damage of Bruch's membrane, dysfunction of the retinal pigment epithelium, photoreceptor degeneration and choroidal neovascularization (CNV)...
April 5, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28380178/what-do-cochrane-systematic-reviews-say-about-diabetic-retinopathy
#20
Vania Mozetic, Julia Pozzetti Daou, Ana Luiza Cabrera Martimbianco, Rachel Riera
CONTEXT AND OBJECTIVE: Diabetic retinopathy is a disease caused by increased permeability of retinal vessels. Its incidence and prevalence have been increasing due to urbanization, greater life expectancy and the habits of modern life. Its onset is insidious and it may lead to blindness in 75% of individuals who have been diabetic for more than 20 years. The aim here was to evaluate the evidence from Cochrane systematic reviews on interventions relating to diabetic retinopathy. DESIGN AND SETTING: Review of systematic reviews, conducted at Cochrane Brazil...
January 2017: São Paulo Medical Journal, Revista Paulista de Medicina
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