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Eye pathology

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https://www.readbyqxmd.com/read/28933233/optical-coherence-tomography-angiography-retinal-vascular-network-assessment-in-multiple-sclerosis
#1
Roberta Lanzillo, Gilda Cennamo, Chiara Criscuolo, Antonio Carotenuto, Nunzio Velotti, Federica Sparnelli, Alessandra Cianflone, Marcello Moccia, Vincenzo Brescia Morra
BACKGROUND: Optical coherence tomography (OCT) angiography is a new method to assess the density of the vascular networks. Vascular abnormalities are considered involved in multiple sclerosis (MS) pathology. OBJECTIVE: To assess the presence of vascular abnormalities in MS and to evaluate their correlation to disease features. METHODS: A total of 50 MS patients with and without history of optic neuritis (ON) and 46 healthy subjects were included...
September 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28931300/-benefits-and-negatives-of-corticosteroid-therapy-in-corneal-pathologies
#2
M Zemanová, V Matušková
INTRODUCTION: Corticosteroid therapy is very beneficial in many types of eye diseases. Corticosteroids are used in the treatment of inflammatory and immunological diseases of the eye. PURPOSE: The aim is to present basic informations about effects of steroids in tissues, their side effects and treatment strategy. METHODS AND RESULTS: Authors process overview of local and systemic steroids and their dosage forms. They refer to the most common problems associated with corticosteroid therapy...
2017: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/28928092/idh2-deficiency-accelerates-renal-dysfunction-in-aged-mice
#3
Su Jeong Lee, Hanvit Cha, Seoyoon Lee, Hyunjin Kim, Hyeong Jun Ku, Sung Hwan Kim, Jung Hyun Park, Jin Hyup Lee, Kwon Moo Park, Jeen-Woo Park
The free radical or oxidative stress theory of aging postulates that senescence is due to an accumulation of cellular oxidative damage, caused largely by reactive oxygen species (ROS) that are produced as by-products of normal metabolic processes in mitochondria. The oxidative stress may arise as a result of either increased ROS production or decreased ability to detoxify ROS. The availability of the mitochondrial NADPH pool is critical for the maintenance of the mitochondrial antioxidant system. The major enzyme responsible for generating mitochondrial NADPH is mitochondrial NADP(+)-dependent isocitrate dehydrogenase (IDH2)...
September 16, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28923587/visual-performance-of-a-quadrifocal-trifocal-intraocular-lens-following-removal-of-the-crystalline-lens
#4
Thomas Kohnen, Michael Herzog, Eva Hemkeppler, Sabrina Schönbrunn, Nina De Lorenzo, Kerstin Petermann, Myriam Böhm
PURPOSE: To evaluate visual performance after implantation of a quadrifocal intraocular lens (IOL). DESIGN: Prospective, non-comparative case series METHODS: Setting: Department of Ophthalmology, Goethe University, Frankfurt, Germany. Patient or Study Population: Twenty-seven patients (54 eyes) received bilateral implantation of the PanOptix IOL (AcrySof® IQ PanOptixTM, Alcon Research, Fort Worth, TX, USA) pre-enrollment. Exclusion criteria were previous ocular surgeries, corneal astigmatism of >1...
September 15, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28922867/discoveries-of-the-structures-of-sialic-acid-and-cmp-sialic-acid-1957-1960-a-letter-from-saul-roseman
#5
Ronald L Schnaar, Yuan C Lee
Sialic acids have a special place in vertebrate glycobiology, where they constitute the dominant terminal saccharides on many cell surface glycans. From early studies that identified sialoglycans as receptors for important pathogens and toxins to more recent discoveries of sialic acid-binding proteins essential for immune system (and other) functions in humans, sialic acids and sialoglycans have become cornerstones in understanding vertebrate glycobiology and pathology. During a remarkable 3-year period in the late 1950s, a newly minted postdoctoral fellow (Donald G...
June 1, 2017: Glycobiology
https://www.readbyqxmd.com/read/28922351/estimation-of-the-mechanical-properties-of-the-eye-through-the-study-of-its-vibrational-modes
#6
M Á Aloy, J E Adsuara, P Cerdá-Durán, M Obergaulinger, J J Esteve-Taboada, T Ferrer-Blasco, R Montés-Micó
Measuring the eye's mechanical properties in vivo and with minimally invasive techniques can be the key for individualized solutions to a number of eye pathologies. The development of such techniques largely relies on a computational modelling of the eyeball and, it optimally requires the synergic interplay between experimentation and numerical simulation. In Astrophysics and Geophysics the remote measurement of structural properties of the systems of their realm is performed on the basis of (helio-)seismic techniques...
2017: PloS One
https://www.readbyqxmd.com/read/28917401/pseudophakic-cystoid-macular-edema-and-spectral-domain-optical-coherence-tomography-detectable-central-macular-thickness-changes-with-perioperative-prostaglandin-analogs
#7
Andrew Walkden, Louise F Porter, Jiten Morarji, Simon P Kelly, Evangelos Sioras
PURPOSE: To define the incidence of cystoid macular edema (CME) and spectral-domain optical coherence tomography-detectable (SD-OCT) subclinical changes in central retinal thickness in patients using prostaglandin analog (PGA) eyedrops after phacoemulsification. SETTING: Manchester Royal Eye Hospital, Manchester, United Kingdom. DESIGN: Prospective case series. METHODS: A consecutive analysis of the incidence of postoperative CME after phacoemulsification by a single surgeon was performed in eyes of patients using PGA eyedrops between March 2010 and January 2014...
August 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28916246/pre-clinical-toxicology-considerations-for-vaccine-development
#8
REVIEW
Nabil Al-Humadi
Vaccine development requires pre-clinical toxicology studies, following good laboratory practice (GLP), before first in human (phase I) use. Many factors are critical in the final outcome of any pre-clinical toxicology study. The study design is one of these critical factors and should be carefully planned to avoid any false negative and/or false positive results. Preparation is another most critical factor in a successful study. Major changes in any procedure during the course of study should be avoided by all means...
September 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28915326/adaptive-immunity-and-metabolic-health-harmony-becomes-dissonant-in-obesity-and-aging
#9
Leena P Bharath, Blanche C Ip, Barbara S Nikolajczyk
Adipose tissue (AT) is the primary energy reservoir organ, and thereby plays a critical role in energy homeostasis and regulation of metabolism. AT expands in response to chronic overnutrition or aging and becomes a major source of inflammation that has marked influence on systemic metabolism. The chronic, sterile inflammation that occurs in the AT during the development of obesity or in aging contributes to onset of devastating diseases such as insulin resistance, diabetes, and cardiovascular pathologies. Numerous studies have shown that inflammation in the visceral AT of humans and animals is a critical trigger for the development of metabolic syndrome...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28912514/retinal-changes-following-rapid-ascent-to-a-high-altitude-environment
#10
X Tian, B Zhang, Y Jia, C Wang, Q Li
PurposeTo determine what impact rapid ascension to a high-altitude environment has on the retina with the aim of preventing and treating high-altitude oculopathy.Patients and methodsParticipants in the study were members of the Chinese military assigned to the high-altitude environment of the Tibetan plateau. Ninety-one participants were enrolled in the study. Optical coherence tomography was used to measure the thickness of retina-related indicators. Measurements were taken before and after exposure to the high-altitude environment and upon return to the baseline altitude...
September 15, 2017: Eye
https://www.readbyqxmd.com/read/28910887/-clinical-practice-of-transnasal-endoscopic-operation-for-retrobulbar-lesions
#11
X W Wu, H Zhang, W H Jiang, J Y Zhang, Z H Xie, Z Y Peng, H Sun
Objective: To summarize the skill and experience of transnasal endoscopic operation for retrobulbar lesions. Methods: Seven patients aged from 25 to 67 years old diagnosed as retrobulbar lesions who underwent transnasal endoscopic operation in Department of Otorhinolaryngology Head and Neck Surgery, Xiangya Hospital between January 2013 and October 2016 were retrospectively analyzed. Two males and five females were included in this study. Five patients underwent transnasal endoscopic operation via media rectus-inferior rectus space, with the other 2 cases via media rectus-superior rectus space...
September 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28910203/the-t-box-transcription-factor-tbx2-regulates-cell-proliferation-in-the-retinal-pigment-epithelium
#12
Jing Wang, Yin Liu, Zhongyuan Su, Li Pan, Fan Lu, Jia Qu, Ling Hou
PURPOSE: Vertebrate eye development and function critically depend on the regulation of proliferation of retinal pigment epithelium (RPE) cells. Hence, a thorough analysis of the molecular parameters controlling RPE cell proliferation is crucial for our understanding of the physiology of this cell type both in health and in disease. The T-box transcription factor TBX2 is an important cell cycle regulator in development and oncogenesis, but its specific role in RPE cell proliferation is far from clear...
September 14, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28904567/intermittent-divergent-squint-in-prematurity-and-its-neurophysiological-aspects
#13
REVIEW
Kalpana Sharma, Praveen Panwar, Kulbhushan Prakash Chaudhary
Intermittent distance exotropia is a deviation characterized by an exophoria at near fixation and manifest exotropia at distance fixation. There is normal binocular fusional vergence and stereoacuity at near fixation, but the eyes tend to diverge in bright sunlight, tiredness, day dreaming and the patient may close one eye in such circumstances. Prematurity is associated with numerous eye pathology, besides retinopathy of prematurity, amblyopia, refractive errors, it is also associated with a higher risk esotropia and exotropia...
April 2017: Journal of Pediatric Neurosciences
https://www.readbyqxmd.com/read/28904427/micrornas-involvement-in-renal-pathophysiology-a-bird-s-eye-view
#14
REVIEW
P Jaswani, S Prakash, A Dhar, R K Sharma, N Prasad, S Agrawal
MicroRNAs (miRNAs) are known to suppress gene expression by binding to messenger RNAs and in turn regulate different pathophysiological processes. Transforming growth factor-β, mitogen-activated protein kinase signaling, and Wnt signaling-like major pathways associated with miRNAs are involved with kidney diseases. The discovery of miRNAs has provided new insights into kidney pathologies and may provide effective therapeutic strategies. Research has demonstrated the role of miRNAs in a variety of kidney diseases including diabetic nephropathy, lupus nephritis, hypertension, nephritic syndrome, acute kidney injury, renal cell carcinoma, and renal fibrosis...
September 2017: Indian Journal of Nephrology
https://www.readbyqxmd.com/read/28903967/long-term-follow-up-of-benign-positional-vertical-opsoclonus-in-infants-retrospective-cohort
#15
Amir Sternfeld, Daniella Lobel, Hana Leiba, Judith Luckman, Shalom Michowiz, Nitza Goldenberg-Cohen
BACKGROUND/AIMS: Benign positional vertical opsoclonus in infants, also described as paroxysmal tonic downgaze, is an unsettling phenomenon that leads to extensive work-up, although benign course has been reported in sporadic cases. We describe long-term follow-up of a series of infants with the phenomenon. METHODS: This retrospective cohort included all infants diagnosed with rapid downgaze eye movement in 2012-2015 and followed until 2016. The databases of two medical centres were retrospectively reviewed...
September 13, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28903152/nuclear-respiratory-factor-1-nrf-1-regulates-transcription-of-the-cxc-receptor-4-cxcr4-in-the-rat-retina
#16
Pei Chen, Xiaoxiao Cai, Ying Yang, Zhao Chen, Jin Qiu, Na Yu, Mingjun Tang, Qiyun Wang, Jian Ge, Keming Yu, Jing Zhuang
Purpose: The CXC receptor 4 (CXCR4) is required for various physiologic and pathologic processes in the eye, including stem cell trafficking, neuronal development, immune responses, and ocular neovascularization. Here, we used the rat retina models to determine the mechanisms driving CXCR4 transcription. Methods: The expression pattern of CXCR4 and nuclear respiratory factor-1 (NRF-1) were profiled in the rat retina during the course of development. Chromatin immunoprecipitation (CHiP) assay determined the transcriptional mechanism of CXCR4 in rat retina...
September 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28902333/multi-modal-imaging-including-optical-coherence-tomography-angiography-in-patients-with-posterior-multifocal-placoid-pigment-epitheliopathy
#17
Jens Ulrich Werner, Christian Enders, Gerhard Klaus Lang, Gabriele Elisabeth Lang
BACKGROUND AND OBJECTIVE: New imaging methods provide novel insights into the pathogenesis of acute posterior multifocal placoid pigment epitheliopathy (APMPPE). PATIENTS AND METHODS: Four patients (eight eyes) in acute, subacute, and late phases of the disease were analyzed with multi-modal imaging methods including optical coherence tomography angiography (OCTA), structural OCT, fundus photography, and fundus autofluorescence. One patient was observed during the entire disease course...
September 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28894266/generation-of-a-new-mouse-model-of-glaucoma-characterized-by-reduced-expression-of-the-ap-2%C3%AE-and-ap-2%C3%AE-proteins
#18
Maria Monica Barzago, Mami Kurosaki, Maddalena Fratelli, Marco Bolis, Chiara Giudice, Laura Nordio, Elisa Cerri, Luciano Domenici, Mineko Terao, Enrico Garattini
We generated 6 transgenic lines with insertion of an expression plasmid for the R883/M xanthine dehydrogenase (XDH) mutant protein. Approximately 20% of the animals deriving from one of the transgenic lines show ocular abnormalities and an increase in intra-ocular pressure which are consistent with glaucoma. The observed pathologic phenotype is not due to expression of the transgene, but rather the consequence of the transgene insertion site, which has been defined by genome sequencing. The insertion site maps to chromosome 1qA3 in close proximity to the loci encoding AP-2β and AP-2δ, two proteins expressed in the eye...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891727/methodology-of-the-zoc-bhvi-high-myopia-cohort-study-the-onset-and-progression-of-myopic-pathologies-and-associated-risk-factors-in-highly-myopic-chinese
#19
Yanxian Chen, Ou Xiao, Xinxing Guo, Decai Wang, Padmaja Sankaridurg, Ian Morgan, Mingguang He
PURPOSE: The increasing prevalence of high myopia and its associated pathologies has raised challenges to ophthalmic services. This project aims to explore the onset and progression of myopic pathologies in highly myopic eyes through a prospective research cohort established in South China. METHODS: Patients with high myopia (sphere ≤ -6.00 D) visiting the optometric clinic of Zhongshan Ophthalmic Center (ZOC) were invited to participate in the baseline examinations and follow-up visit over a 10-year period...
September 11, 2017: Ophthalmic Epidemiology
https://www.readbyqxmd.com/read/28891704/mucoepidermoid-carcinoma-in-the-skull-of-an-orange-winged-amazon-parrot-amazona-amazonica
#20
Melissa R Nau, James W Carpenter, Denise Lin, Sanjeev Narayanan, Mackenzie Hallman
A 33-year-old female intact orange-winged Amazon parrot (Amazona amazonica) presented for a slowly growing mass over the right eye. A computed tomography scan performed with and without intravenous contrast revealed a heterogeneous mixed soft tissue and mineral-dense mass with a small area of non-contrast-enhancing fluid density located between the orbits at the caudal aspect of the nasal passages, with associated lysis of the right caudal nasal passage and the right frontal bone. Following euthanasia, the mass was found to consist of soft tissue between the right eye and nostril over the right frontal bone...
September 2017: Journal of Avian Medicine and Surgery
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