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Current Eye Research

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https://www.readbyqxmd.com/read/28708005/taurine-protects-lens-epithelial-cells-against-ultraviolet-b-induced-apoptosis
#1
Wu Dayang, Pang Dongbo
BACKGROUND: The massive uptake of compatible osmolytes is a self-protective response shared by lens exposed to hypertonic stress and ultraviolet stress. OBJECTIVE: This study aimed to investigate the protective effects of taurine against ultraviolet B-induced cytotoxicity in the lens epithelial cells. METHODS: Real-time PCR was used to measure osmolytes transport. Radioimmunoassay was used to measure osmolytes uptake. Cell counting kit-8 assays were used to measure cellular viability...
July 14, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28644681/treatment-results-of-corneal-collagen-cross-linking-combined-with-riboflavin-and-440-nm-blue-light-for-bacterial-corneal-ulcer-in-rabbits
#2
Shufang Wei, Cuiying Zhang, Shaoru Zhang, Yanyun Xu, Guoying Mu
PURPOSE: To study the treatment effect of corneal collagen cross-linking (CXL) combined with 440 nm blue light and riboflavin on bacterial corneal ulcer using animal experiments. METHODS: A total of 21 New Zealand white rabbits that developed Staphylococcus aureus corneal ulcer were randomly divided into three groups. Seven rabbits were used as blank control groups; seven rabbits were treated with CXL combined with riboflavin and 440 nm blue light; and seven rabbits were treated with CXL combined with riboflavin and 370 nm ultraviolet A light...
June 23, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28636459/inhibition-of-fusarium-solani-infection-in-murine-keratocytes-by-lactobacillus-salivarius-ssp-salivarius-jcm1231-culture-filtrate-in-vitro
#3
Jianzhang Hu, Fang Chen, Tong Kan, Hua Zhuang, Jingjin Zhang, Xiaoli Han
PURPOSE: To explore the inhibitory activity of Lactobacillus salivarius ssp. salivarius JCM1231 (L. salivarius JCM1231) culture filtrate against Fusarium solani (F. solani) and its effects on murine keratocytes (MKs) infected with F. solani. METHODS: L. salivarius JCM1231 was cultured in an anaerobic incubator for 24 h, and the L. salivarius culture filtrate (LSCF) was prepared .The antifungal activity of L. salivarius JCM1231 against F. solani was determined with a plate overlay assay, agar diffusion assay, and conidial germination inhibition test...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28636415/comprehensive-modeling-of-corneal-alkali-injury-in-the-rat-eye
#4
Hosoon Choi, Casie Phillips, Joo Youn Oh, Eileen M Stock, Dong-Ki Kim, Jae-Kyung Won, Samuel Fulcher
PURPOSE: To characterize the molecular, clinical, and histopathological profiles in the rat cornea after alkali injury over a 21-day period. METHODS: Alkali injury was induced in one eye of male Lewis rats. Corneal opacity and corneal neovascularization were assessed daily. Real-time qRT-PCR analysis and immunohistochemical staining were conducted to examine inflammation, neovascularization, and fibrosis. RESULTS: We found that within 2 hours of chemical exposure, corneal opacification rapidly developed with an acute increase in various cytokine expressions, while several cytokines demonstrated a secondary peak by day 7...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28636408/pattern-visual-evoked-potential-pattern-electroretinogram-and-retinal-nerve-fiber-layer-thickness-in-patients-with-migraine-during-and-after-aura
#5
Amany Abd El-Fattah El-Shazly, Yousra Ahmed Farweez, Momen Mahmoud Hamdi, Noha Ezzat El-Sherbiny
PURPOSE: To study pattern visual evoked potential (PVEP), pattern electroretinogram (PERG), and retinal nerve fiber layer (RNFL) thickness in patients with migraine during and after aura. MATERIALS AND METHODS: We included 60 eyes of 60 patients with migraine (Group 1) and 30 healthy volunteers (30 eyes) as controls (Group 2). Group 1 was studied twice, during a visual aura (1-a) and in between attacks (1-b). All participants underwent full ophthalmological examination, PVEP, PERG, and optical coherence tomographyOCT imaging of the RNFL thickness for each patient...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28636406/protective-effect-of-intravitreal-administration-of-exosomes-derived-from-mesenchymal-stem-cells-on-retinal-ischemia
#6
Elad Moisseiev, Johnathon D Anderson, Sharon Oltjen, Mayank Goswami, Robert J Zawadzki, Jan A Nolta, Susanna S Park
PURPOSE: Exosomes derived from human mesenchymal stem cells (hMSCs) cultured under hypoxic conditions contain proteins and growth factors that promote angiogenesis. This study investigated the effect of intravitreal administration of these exosomes on retinal ischemia using a murine model. METHODS: Oxygen-induced retinopathy (OIR) was induced by exposing one-week-old male C57BL/6J mice to 5 days of 75% hyperoxic conditioning, and returning to room air. After hyperoxic conditioning, the right eye of each mouse was injected intravitreally with 1 µl saline or exosomes derived from hMSCs and compared to control mice of the same age raised in room air without OIR injected intravitreally with saline...
June 21, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632411/the-effect-of-dexamethasone-intravitreal-implant-on-retinal-nerve-fiber-layer-in-patients-diagnosed-with-branch-retinal-vein-occlusion
#7
Orhan Ayar, Atilla Alpay, Yaran Koban, Mehmet Orcun Akdemir, Serpil Yazgan, Sılay Canturk Ugurbas, Suat Hayri Ugurbas
PURPOSE: To evaluate the effect of a single dose of intravitreal dexamethasone (DEX) implant on retinal nerve fiber layer (RNFL) thickness in patients with branch retinal vein occlusion (BRVO) in a 6-month period. MATERIALS AND METHODS: This retrospective observational study included the patients with BRVO who received intravitreal DEX implant and whose assessment included the baseline RNFL thickness measurements. The data of 26 eyes of 24 patients were retrospectively analyzed...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632410/correlation-between-interleukin-6-and-thrombin-antithrombin-iii-complex-levels-in-retinal-diseases
#8
Rita Ehrlich, Alon Zahavi, Ruth Axer-Siegel, Ivan Budnik, Ayelet Dreznik, Mor Dahbash, Yael Nisgav, Elinor Megiddo, Gili Kenet, Dov Weinberger, Tami Livnat
PURPOSE: This study aims to evaluate and correlate the levels of interleukin-6 (IL-6) and thrombin-antithrombin III complex (TAT) in the vitreous of patients with different vitreoretinal pathologies. METHODS: Vitreous samples were collected from 78 patients scheduled for pars plana vitrectomy at a tertiary medical center. Patients were divided by the underlying vitreoretinal pathophysiology, as follows: macular hole (MH)/epiretinal membrane (ERM) (n = 26); rhegmatogenous retinal detachment (RRD) (n = 32); and proliferative diabetic retinopathy (PDR) (n = 20)...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632409/l-satropane-prevents-retinal-neuron-damage-by-attenuating-cell-apoptosis-and-a%C3%AE-production-via-activation-of-m1-muscarinic-acetylcholine-receptor
#9
Ping Yu, Wei Zhou, Lu Liu, Ya-Bin Tang, Yun Song, Juan-Juan Lu, Li-Na Hou, Hong-Zhuan Chen, Yong-Yao Cui
Muscarinic acetylcholine receptor (mAChR) agonists have been used to treat glaucoma due to their intraocular pressure-lowering effects. Recently, it has been reported that retinal mAChRs activation can also stimulate neuroprotective pathways. PURPOSE: In our study, we evaluated the potential neuroprotective effect of L-satropane, a novel mAChR agonist, on retinal neuronal injury induced by cobalt chloride (CoCl2) and ischemia/reperfusion (I/R). METHODS: CoCl2-induced hypoxia injury in cultured cell models and I/R-induced retinal neuronal damage in rats in vivo were used to evaluate the abilities of L-satropane...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632405/reading-performance-improvements-in-patients-with-central-vision-loss-without-age-related-macular-degeneration-after-undergoing-personalized-rehabilitation-training
#10
María B Coco-Martín, Alberto López-Miguel, Rubén Cuadrado, Agustín Mayo-Iscar, Azael J Herrero, José C Pastor, Miguel J Maldonado
PURPOSE: To evaluate the efficacy of a reading rehabilitation program (RRP) in patients with central visual loss (CVL) and assess the impact of the RRP on the quality of life (QoL). METHODS: The RRP included four in-office and 39 in-home training sessions over 6 weeks. Reading speed, duration, and font size were evaluated during each in-office session. The subjective perception of the QoL was assessed before and after the RRP using the short version of a questionnaire (World Health Organization Quality of Life)...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632404/medial-and-lateral-rectus-muscle-insertion-distance-and-width-in-esotropia-and-exotropia-patients
#11
Leyla Niyaz, Ozlem Eski Yucel, Adem Gul
PURPOSE: The hypothesis that the extraocular muscle insertion distance and muscle width may be associated with the type and size of deviation was tested. METHODS: This was a prospective study of 129 patients who had surgery for horizontal strabismus or retinal detachment. The insertion distances and widths of the medial rectus (MR) and lateral rectus (LR) muscles were measured intraoperatively in esotropia, exotropia, and buckling surgery (control group) patients...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28632403/effect-of-amblyopia-treatment-on-choroidal-thickness-in-children-with-hyperopic-anisometropic-amblyopia
#12
Seray Aslan Bayhan, Hasan Ali Bayhan
PURPOSE: To evaluate choroidal thickness (CT) in the eyes of children with hyperopic anisometropic amblyopia and to assess changes in CT during amblyopia treatment using spectral-domain optical coherence tomography (SD-OCT). METHODS: This longitudinal study, initially enrolled 40 patients, aged 3-9 years with hyperopic anisometropic amblyopia. Patients underwent treatment with refractive correction alone for 16 weeks and if needed, with refractive correction and patching treatment thereafter (6 months)...
June 20, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28628342/effect-of-green-tea-polyphenol-epigallocatechin-3-gallate-on-the-aggregation-of-%C3%AE-a-66-80-peptide-a-major-fragment-of-%C3%AE-a-crystallin-involved-in-cataract-development
#13
Vijay Kumar, Shalini Gour, Ocan Simon Peter, Shraddha Gandhi, Pankaj Goyal, Janmejay Pandey, Ram Swaroop Harsolia, Jay Kant Yadav
PURPOSE: Crystallin is a major protein present in eye lens. Peptide fragment αA(66-80) derived from αA-crystallin possesses high aggregation propensity and forms amyloid-like structures. αA(66-80) aggregates are known to interact with soluble crystallins and destabilize native structures that subsequently undergo aggregation. Crystallin aggregation in eye lens leads to reduction in lens opacity, the condition generally referred to as a cataract. Thus, αA(66-80) aggregation appears to be an important event during cataract development, and therefore, inhibition of αA(66-80) aggregation may be an attractive strategy to intervene in cataract development...
June 19, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28622066/vascular-associated-muc4-vwf-co-localization-in-human-conjunctival-malignant-melanoma-specimens-tumor-metastasis-by-migration
#14
Vinodh Kakkassery, Sibylle Winterhalter, Ann-Christin Nick, Stephanie C Joachim, Antonia M Joussen, Norbert Kociok
PURPOSE: To investigate whether vascular differentiation marker von Willebrand factor (vWf) and proliferation marker KI67 expression correlate with MUC4 localization around stromal tumor vascularization in human conjunctival malignant melanoma (CMM). MATERIALS AND METHODS: For the purposes of this study, we analyzed samples from human CMMs (n = 4), conjunctival compound nevi (n = 7), and samples from healthy conjunctiva (n = 7) for MUC1, 4, and 16 by immunohistochemistry...
June 16, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28622062/novel-zinc-finger-protein-gene-469-znf469-variants-in-advanced-keratoconus
#15
Elvin Yildiz, Handan Bardak, Murat Gunay, Yavuz Bardak, Serhat Imamoglu, Halil Ozbas, Ozkan Bagci
PURPOSE: Common polymorphic variants upstream of Zinc finger protein gene 469 (ZNF469) have been associated with central corneal thickness. Rare ZNF469 variants have been shown in keratoconus patients. The aim of the current study was to investigate the frequency of ZNF 469 gene variants in rapidly progressive advance keratoconus patients who underwent corneal transplant surgery by the age of 30, compared to their frequency in the normal Turkish population. METHODS: A search in a patient database was performed to identify patients with a rapidly progressive keratoconus requiring corneal transplant surgery by the age of 30 in at least one eye...
June 16, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28622050/serum-and-aqueous-humor-levels-of-fetuin-a-in-pseudoexfoliation-syndrome
#16
Nilay Yuksel, Tamer Takmaz, Ummuhani Ozel Turkcu, Merve Ergin, Hasan Altinkaynak, Ayse Bilgihan
PURPOSE: To evaluate serum and aqueous humor levels of fetuin-A in patients with pseudoexfoliation syndrome (PEXS) in comparison with those of age- and sex-matched healthy subjects. MATERIALS AND METHODS: This prospective study included 25 patients with PEXS and 25 control subjects who were undergoing cataract surgery without any systemic or ocular disease. Aqueous humor and serum fetuin-A levels were measured with enzyme-linked immunosorbent assay method. RESULTS: The mean age of the PEXS group (14 males, 11 females, n = 25) was 57...
June 16, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28622042/the-relationship-between-the-24-hour-fluctuations-in-schlemm-s-canal-and-intraocular-pressure-an-observational-study-using-high-frequency-ultrasound-biomicroscopy
#17
Mu Li, Yin Zhao, Xiaoqin Yan, Hong Zhang
PURPOSE: To assess 24-hour fluctuations in Schlemm's canal (SC) parameters (cross-sectional area, perimeter) and intraocular pressure (IOP) and the relationship between these fluctuations in healthy individuals. METHODS: SC and IOP were examined in 29 participants at 2:30, 5:30, 11:30, 17:30, and 23:30 within one day. The superior, inferior, nasal, and temporal SC quadrants were evaluated using 80-MHz ultrasound biomicroscopy. RESULTS: SC parameters and IOP fluctuated significantly within 24 hours (all P < 0...
June 16, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28574750/calcium-dobesilate-prevents-neurodegeneration-and-vascular-leakage-in-experimental-diabetes
#18
Cristina Solà-Adell, Patricia Bogdanov, Cristina Hernández, Joel Sampedro, Marta Valeri, Marta Garcia-Ramirez, Christian Pasquali, Rafael Simó
PURPOSE: The mechanisms involved in the reported beneficial effects of Calcium dobesilate monohydrate (CaD) for the treatment of diabetic retinopathy (DR) remain to be elucidated. The main aim of the present study is to examine whether CaD prevents early events in the pathogenesis of DR such as neurodegeneration and vascular leakage. In addition, putative mediators of both neurodegeneration (glutamate/GLAST, ET-1/ETB receptor) and early microvascular impairment (ET-1/ETA receptor, oxidative stress, VEGF, and the PKC-delta-p38 MAPK pathway) have been examined...
June 2, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28557646/spontaneous-blinking-kinematics-in-patients-who-have-undergone-autogeneous-fascia-frontalis-suspension
#19
Adriano Baccega, Denny Marcos Garcia, Antonio Augusto V Cruz
PURPOSE: To measure spontaneous blink metrics and brow motion in patients with congenital ptosis operated with frontalis slings with autogenous fascia lata. METHODS: An infrared three-dimensional video motion analyzer was employed to simultaneously measure brow motion and spontaneous blinks of 17 patients with congenital ptosis who underwent frontalis sling with autogenous fascia lata and a control group of equal number of healthy subjects. A customized software identified and quantified the amplitude and maximum velocity spontaneous blinks eyelid and brown motion during a 5-minute observation of a commercial movie...
May 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28557626/response-characteristics-and-retinal-origin-of-the-photopic-negative-response-of-the-electroretinogram-in-dogs
#20
Shunsuke Takada, Junzo Kinoshita, Noriaki Iwata, Masako Imaoka, Yoshiro Tani
PURPOSE: To investigate the response characteristics and retinal origin of the photopic negative response (PhNR) of the electroretinograms (ERGs) in dogs. METHODS: Photopic ERGs were elicited by white flash stimuli of different intensities under a steady white background illumination in four anesthetized dogs. These ERGs were also recorded in the same manner after intravitreal injection of tetrodotoxin (TTX). Additionally, retinal localization of voltage-gated sodium channel Nav 1...
May 30, 2017: Current Eye Research
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