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https://www.readbyqxmd.com/read/28817388/ophthalmologic-manifestations-of-systemic-vasculitis
#1
George N Papaliodis
PURPOSE OF REVIEW: To review the systemic vasculitides and associated ocular manifestations with emphasis on publications within the last 12 months. RECENT FINDINGS: There are multiple case reports demonstrating atypical ocular manifestations of systemic vasculitis. Often the eye findings are the initial presentation of the disorder and require a high degree of clinical suspicion to evaluate further as these conditions can compromise vision but some may also be life threatening...
August 16, 2017: Current Opinion in Ophthalmology
https://www.readbyqxmd.com/read/28816624/comparison-of-two-rabbit-models-with-deficiency-of-corneal-epithelium-and-limbal-stem-cells-established-by-different-methods
#2
Hening Zhang, Shaochun Lin, Min Zhang, Qijiong Li, Weihua Li, Wencong Wang, Minglei Zhao, Yaojue Xie, Zhiquan Li, Mian Huang, Zhichong Wang, Xiulan Zhang, Bing Huang
Limbal stem cell defect model is an important animal model that provides a basis for the study of ocular surface diseases. The rabbit cornea is of moderate size and is widely used in such studies as an experimental animal model. At present, the main modeling methods are alkali burns, and corneal limbus girdling and corneal epithelium doctoring. Each method has its own characteristics. In this study, we observed rabbit models with severe ocular surface defect established by the two methods and changes after amniotic membrane transplantation...
August 14, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28810563/dystrophia-myotonica-type-1-presenting-with-dysarthria-a-case-report-and-literature-review
#3
Chunrong Li, Xiaoling Zhang, Chunkui Zhou, Lijun Zhu, Kangding Liu, Shaokuan Fang
Dystrophia myotonica (DM) type 1 is an autosomal dominant disorder, caused by a trinucleotide CTG repeat expansion in the 3' untranslated region of the dystrophia myotonica protein kinase (DMPK) gene (chromosome 19q13.3). The disorder affects different organ systems, including the skeletal muscles, ocular lens, lungs, heart and gastrointestinal tract, as well as the endocrine and central nervous systems. The skeletal muscles are most frequently involved, whereby the disorder manifests as myotonia, muscle weakness and amyotrophy...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28810265/viral-retinopathy-in-experimental-models-of-zika-infection
#4
Zhenyang Zhao, Matthew Yang, Sasha R Azar, Lynn Soong, Scott C Weaver, Jiaren Sun, Yan Chen, Shannan L Rossi, Jiyang Cai
Purpose: Emerging evidence has shown that both congenital and adult Zika virus (ZIKV) infection can cause eye diseases. The goals of the current study were to explore mechanisms and pathophysiology of ZIKV-induced eye defects. Methods: Wild-type or A129 interferon type I receptor-deficient mice were infected by either FSS13025 or Mex1-7 strain of ZIKV. Retinal histopathology was measured at different time points after infection. The presence of viral RNA and protein in the retina was determined by in situ hybridization and immunofluorescence staining, respectively...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28810039/distinguishing-white-dot-syndromes-with-patterns-of-choroidal-hypoperfusion-on-optical-coherence-tomography-angiography
#5
Jay C Wang, Inês Laíns, Lucia Sobrin, John B Miller
BACKGROUND AND OBJECTIVE: To compare patterns of choroidal hypoperfusion in white dot syndromes (WDS) using optical coherence tomography angiography (OCTA). PATIENTS AND METHODS: Consecutive patients with WDS were imaged with either the Zeiss AngioPlex OCT Angiography (Carl Zeiss AG, Oberkochen, Germany) or the AngioVue OCT Angiography (Optovue, Fremont, CA) from February to November 2016. Four patients with acute posterior multifocal placoid pigment epitheliopathy (APMPPE), birdshot chorioretinopathy (BCR), presumed ocular histoplasmosis syndrome (POHS), and multiple evanescent white dot syndrome (MEWDS) were selected...
August 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28807717/myofibroblast-transdifferentiation-the-dark-force-in-ocular-wound-healing-and-fibrosis
#6
REVIEW
Daisy Y Shu, Frank J Lovicu
Wound healing is one of the most complex biological processes to occur in life. Repair of tissue following injury involves dynamic interactions between multiple cell types, growth factors, inflammatory mediators and components of the extracellular matrix (ECM). Aberrant and uncontrolled wound healing leads to a non-functional mass of fibrotic tissue. In the eye, fibrotic disease disrupts the normally transparent ocular tissues resulting in irreversible loss of vision. A common feature in fibrotic eye disease is the transdifferentiation of cells into myofibroblasts that can occur through a process known as epithelial-mesenchymal transition (EMT)...
August 12, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28805710/analysis-of-the-pathogenic-factors-and-management-of-dry-eye-in-ocular-surface-disorders
#7
REVIEW
Marcella Nebbioso, Paola Del Regno, Magda Gharbiya, Marta Sacchetti, Rocco Plateroti, Alessandro Lambiase
The tear film represents the interface between the eye and the environment. The alteration of the delicate balance that regulates the secretion and distribution of the tear film determines the dry eye (DE) syndrome. Despite having a multifactorial origin, the main risk factors are female gender and advanced age. Likewise, morphological changes in several glands and in the chemical composition of their secretions, such as proteins, mucins, lipidics, aqueous tears, and salinity, are highly relevant factors that maintain a steady ocular surface...
August 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28794614/accuracy-of-b-scan-ultrasonography-in-acute-fundus-obscuring-vitreous-hemorrhage-using-a-standardized-scanning-protocol-and-a-dedicated-ophthalmic-ultrasonographer
#8
Maria T Sandinha, Ajay K Kotagiri, Rona I Owen, Caspar Geenen, David Hw Steel
PURPOSE: To assess the accuracy of B-scan ultrasound (U/S) in diagnosing cases of acute fundus obscuring vitreous hemorrhage (FOVH) using a standardized scan protocol and dedicated ophthalmic ultrasonographer. METHODS: Consecutive patients presenting with acute FOVH of unknown cause, between January 2013 and December 2014, were prospectively recruited. Patients underwent a scan performed by a dedicated ultrasonographer, utilizing a systematic scan sequence and using an ocular specific U/S device...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28790955/oxygen-toxicity-and-special-operations-forces-diving-hidden-and-dangerous
#9
REVIEW
Thijs T Wingelaar, Pieter-Jan A M van Ooij, Rob A van Hulst
In Special Operations Forces (SOF) closed-circuit rebreathers with 100% oxygen are commonly utilized for covert diving operations. Exposure to high partial pressures of oxygen (PO2) could cause damage to the central nervous system (CNS) and pulmonary system. Longer exposure time and higher PO2 leads to faster development of more serious pathology. Exposure to a PO2 above 1.4 ATA can cause CNS toxicity, leading to a wide range of neurologic complaints including convulsions. Pulmonary oxygen toxicity develops over time when exposed to a PO2 above 0...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28789979/conjunctival-subepithelial-fibrosis-and-meibomian-gland-atrophy-in-ocular-graft-versus-host-disease
#10
Yael Kusne, M'hamed Temkit, Nandita Khera, Dharmendra R Patel, Joanne F Shen
PURPOSE: Dry eye symptoms greatly impact patients' quality of life in ocular graft-versus-host disease (oGVHD). Various ocular surface changes have been reported in oGVHD, including meibomian gland atrophy (MGA) and clinical conjunctival scarring or subepithelial fibrosis (CSEF). The relationships between CSEF, MGA, and other ocular surface changes in oGVHD were examined. METHODS: Charts of 21 consecutive GVHD patients examined by a single ophthalmologist were retrospectively reviewed...
August 5, 2017: Ocular Surface
https://www.readbyqxmd.com/read/28783856/ocular-changes-during-pregnancy
#11
Pedro Marcos-Figueiredo, Ana Marcos-Figueiredo, Pedro Menéres, Jorge Braga
Pregnancy is needed for the perpetuation of the human species, and it leads to physiological adaptations of the various maternal organs and systems. The eye, although a closed space, also undergoes some modifications, most of which are relatively innocuous, but they may occasionally become pathological. For women, pregnancy is a susceptibility period; however, for many obstetricians, their knowledge of the ocular changes that occur during pregnancy tends to be limited. For this reason, this is a important area of study as is necessary the development of guidelines to approach those changes...
August 7, 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28781889/evaluation-of-macular-and-peripapillary-vessel-flow-density-in-eyes-with-no-known-pathology-using-optical-coherence-tomography-angiography
#12
Muhammad Hassan, Mohammad Ali Sadiq, Muhammad Sohail Halim, Rubbia Afridi, Mohamed K Soliman, Salman Sarwar, Aniruddha Agarwal, Diana V Do, Quan Dong Nguyen, Yasir Jamal Sepah
PURPOSE: To assess normal vessel flow density (VFD) in macular and peripapillary regions of eyes with no known ocular pathology using optical coherence tomography angiography (OCTA). METHODS: AngioVue (Optovue, Fremont, CA, USA) was used to capture OCTA images. A 3 × 3 mm grid and a 4.5 × 4.5 mm grid was used to scan parafoveal and peripapillary regions, respectively. ReVue software was utilized to measure VFD in five sectors within the inner two circles of ETDRS grid in macular region and correlated to retinal thickness of same sectors...
2017: International Journal of Retina and Vitreous
https://www.readbyqxmd.com/read/28780616/the-analysis-of-posterior-segment-findings-in-term-and-premature-infants-using-retcam-images
#13
Huseyin Gursoy, Mustafa Deger Bilgec, Nazmiye Erol, Hikmet Basmak, Ertugrul Colak
OBJECTIVE: To analyze posterior segment findings in term and premature infants using the RetCam image database. METHODS: RetCam images taken of infants born between January 2012 and December 2015 were reviewed. Group 1 included infants with posterior segment findings other than retinopathy of prematurity (ROP). Group 2 included infants with mild-to-severe ROP. The baseline characteristics, anterior segment findings, and percentage of infants who received treatment were compared among the 2 groups...
August 5, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28776160/-acute-monocular-loss-of-vision-differential-diagnostic-considerations-apart-from-the-internistic-etiological-clarification
#14
A Rickmann, M A Macek, P Szurman, K Boden
We report the case of acute painless monocular loss of vision in a 53-year-old man. An interdisciplinary etiological evaluation remained without pathological findings with respect to arterial branch occlusion. A reevaluation of the patient history led to a possible association with the administration of phosphodiesterase type 5 inhibitor (PDE5 inhibitor). A critical review of the literature on PDE5 inhibitor administration with ocular participation was performed.
August 3, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28770109/ocular-adverse-effects-of-intravitreal-bevacizumab-are-potentiated-by-intermittent-hypoxia-in-a-rat-model-of-oxygen-induced-retinopathy
#15
Jeffrey J Tan, Charles L Cai, Eric M Shrier, Lois McNally, Douglas R Lazzaro, Jacob V Aranda, Kay D Beharry
Intravitreal bevacizumab (Avastin) use in preterm infants with retinopathy of prematurity is associated with severe neurological disabilities, suggesting vascular leakage. We examined the hypothesis that intermittent hypoxia (IH) potentiates intravitreal Avastin leakage. Neonatal rats at birth were exposed to IH from birth (P0)-P14. At P14, the time of eye opening in rats, a single dose of Avastin (0.125 mg) was injected intravitreally into the left eye. Animals were placed in room air (RA) until P23 or P45 for recovery (IHR)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28769866/eye-control-deficits-coupled-to-hand-control-deficits-eye-hand-incoordination-in-chronic-cerebral-injury
#16
John-Ross Rizzo, James K Fung, Maryam Hosseini, Azadeh Shafieesabet, Edmond Ahdoot, Rosa M Pasculli, Janet C Rucker, Preeti Raghavan, Michael S Landy, Todd E Hudson
It is widely accepted that cerebral pathology can impair ocular motor and manual motor control. This is true in indolent and chronic processes, such as neurodegeneration and in acute processes such as stroke or those secondary to neurotrauma. More recently, it has been suggested that disruptions in these control systems are useful markers for prognostication and longitudinal monitoring. The utility of examining the relationship or the coupling between these systems has yet to be determined. We measured eye and hand-movement control in chronic, middle cerebral artery stroke, relative to healthy controls, in saccade-to-reach paradigms to assess eye-hand coordination...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28764214/study-of-retinal-nerve-fibre-layer-thickness-and-visual-contrast-sensitivity-in-hiv-positive-individuals
#17
Rudrajit Paul, Asim K Ghosh, Adwaita Nag, Shyamapada Biswas, Britisundar Naiya, Jayati Mondal
INTRODUCTION: Measurement of Retinal Nerve Fibre Layer Thickness (RNFLT) by Optical Coherence Tomography (OCT) is a sensitive, non invasive and cheap method of detecting early retinal changes in a variety of diseases. In HIV infection, RNFLT is altered and this may have effect on other visual functions like Contrast Sensitivity (CS) and visual acuity. Such ocular pathology can affect the daily life and profession (especially driving) of HIV infected individuals. However, studies on this topic in HIV infected population are rare from India...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28760885/the-neonatal-fc-receptor-and-complement-fixation-facilitate-prophylactic-vaccine-mediated-humoral-protection-against-viral-infection-in-the-ocular-mucosa
#18
Derek J Royer, Meghan M Carr, Hem R Gurung, William P Halford, Daniel J J Carr
The capacity of licensed vaccines to protect the ocular surface against infection is limited. Common ocular pathogens, such as HSV-1, are increasingly recognized as major contributors to visual morbidity worldwide. Humoral immunity is an essential correlate of protection against HSV-1 pathogenesis and ocular pathology, yet the ability of Ab to protect against HSV-1 is deemed limited due to the slow IgG diffusion rate in the healthy cornea. We show that a live-attenuated HSV-1 vaccine elicits humoral immune responses that are unparalleled by a glycoprotein subunit vaccine vis-à-vis Ab persistence and host protection...
July 31, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28760643/reactive-oxygen-species-oxidative-stress-glaucoma-and-hyperbaric-oxygen-therapy
#19
Charles McMonnies
This review examines the role of oxidative stress in damage to cells of the trabecular meshwork and associated impaired aqueous drainage as well as damage to retinal ganglion cells and associated visual field losses. Consideration is given to the interaction between vascular and mechanical explanations for pathological changes in glaucoma. For example, elevated intraocular pressure (IOP) forces may contribute to ischaemia but there is increasing evidence that altered blood flow in a wider sense is also involved...
July 28, 2017: Journal of Optometry
https://www.readbyqxmd.com/read/28760551/experimental-assessment-of-novel-pax6-splicing-mutations-in-two-chinese-families-with-aniridia
#20
Qi Miao, Xiyuan Ping, Xiajing Tang, Li Zhang, Xin Zhang, Yalan Cheng, Xingchao Shentu
Aniridia is a rare, congenital ocular disorder caused by the mutations of the paired box gene-6 (PAX6) (OMIM 607108), which encodes a highly conserved transcriptional regulator. In order to investigate the clinical characterizations and genetic defects of two Chinese families affected with aniridia, we recruited the family members and 200 ethnically matched controls. The entire exons and flanking intronic sequences of the PAX6 gene (NG_008679.1) were analyzed and effects of variants on splicing were assessed in silico and in vitro using exon trapping assay with pET01...
July 28, 2017: Gene
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