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https://www.readbyqxmd.com/read/28503424/interleukin-13-and-age-related-macular-degeneration
#1
Bo Fu, Zhe-Li Liu, Han Zhang, Feng Gu
AIM: o identify the effects of interleukin (IL)-13 on retinal pigment epithelial (RPE) cells and the IL-13 level in aqueous humor of age-related macular degeneration (AMD) patients. METHODS: IL-13 levels in aqueous humor specimens from AMD patients were detected with enzyme-linked immunosorbent assay (ELISA). ARPE-19 cells were treated with 10 ng/mL IL-13 for 12, 24, and 48h. The cell proliferaton was evaluated by the MTS method. The mRNA and protein levels of α-SMA and ZO-1 were evaluated with quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot respectively...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28501392/acute-retinal-necrosis-presenting-characteristics-and-clinical-outcomes-in-a-cohort-of-polymerase-chain-reaction-positive-patients
#2
Nicholas J Butler, Ahmadreza Moradi, Sherveen S Salek, Bryn M Burkholder, Theresa G Leung, James P Dunn, Jennifer E Thorne
PURPOSE: To identify determinants of adverse outcomes in acute retinal necrosis (ARN), presenting characteristics and incidence rates of vision loss and ocular complications in a cohort of polymerase chain reaction (PCR)-positive eyes were analyzed. DESIGN: Retrospective, observational cohort study. METHODS: Forty-one eyes of 36 patients with clinically-diagnosed ARN, PCR-positive for herpes simplex virus or varicella zoster virus and evaluated between January 2002 and June 2013, were included...
May 10, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28474838/connective-tissue-growth-factor-promotes-efficient-generation-of-human-induced-pluripotent-stem-cell-derived-choroidal-endothelium
#3
Allison E Songstad, Kristan S Worthington, Kathleen R Chirco, Joseph C Giacalone, S Scott Whitmore, Kristin R Anfinson, Dalyz Ochoa, Cathryn M Cranston, Megan J Riker, Maurine Neiman, Edwin M Stone, Robert F Mullins, Budd A Tucker
Age-related macular degeneration (AMD) is a leading cause of irreversible blindness in the Western world. Although, the majority of stem cell research to date has focused on production of retinal pigment epithelial (RPE) and photoreceptor cells for the purpose of evaluating disease pathophysiology and cell replacement, there is strong evidence that the choroidal endothelial cells (CECs) that form the choriocapillaris vessels are the first to be lost in this disease. As such, to accurately evaluate disease pathophysiology and develop an effective treatment, production of patient-specific, stem cell-derived CECs will be required...
May 5, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28471828/nonalcoholic-fatty-liver-disease-can-be-predicted-by-retinal-vascular-changes-in-patients-with-obesity-without-hypertension-or-diabetes
#4
Maria E Romero-Ibarguengoitia, Arturo Herrera-Rosas, Alfredo A Domínguez-Mota, Jinny T Camas-Benitez, María F Serratos-Canales, Mireya León-Hernández, Antonio González-Chávez, Eduardo López-Ortiz, Srinivas Mummidi, Ranvidranth Duggirala, Juan C López-Alvarenga
OBJECTIVE: To evaluate the utility of predicting nonalcoholic fatty liver disease (NAFLD) and obesity by retinal vascular changes (RVC) found in fundoscopy and to determine whether this is related to a low-grade inflammatory process. METHODS: We carried out a cross-sectional analysis that included 152 (ages 18-45 years) patients divided into four groups: NAFLD and BMI less than 25, absence of NAFLD and BMI less than 25, NAFLD and BMI more than 30, and absence of NAFLD and BMI more than 30...
May 3, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28465655/early-amd-like-defects-in-the-rpe-and-retinal-degeneration-in-aged-mice-with-rpe-specific-deletion-of-atg5-or-atg7
#5
Youwen Zhang, Samuel D Cross, James B Stanton, Alan D Marmorstein, Yun Zheng Le, Lihua Y Marmorstein
PURPOSE: To examine the effects of autophagy deficiency induced by RPE-specific deletion of Atg5 or Atg7 in mice as a function of age. METHODS: Conditional knockout mice with a floxed allele of Atg5 or Atg7 were crossed with inducible VMD2-rtTA/Cre transgenic mice. VMD2-directed RPE-specific Cre recombinase expression was induced with doxycycline feeding in the resulting mice. Cre-mediated deletion of floxed Atg5 or Atg7 resulted in RPE-specific inactivation of the Atg5 or Atg7 gene...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28465464/inflammatory-signals-from-photoreceptor-modulate-pathological-retinal-angiogenesis-via-c-fos
#6
Ye Sun, Zhiqiang Lin, Chi-Hsiu Liu, Yan Gong, Raffael Liegl, Thomas W Fredrick, Steven S Meng, Samuel B Burnim, Zhongxiao Wang, James D Akula, William T Pu, Jing Chen, Lois E H Smith
Pathological neovessels growing into the normally avascular photoreceptors cause vision loss in many eye diseases, such as age-related macular degeneration and macular telangiectasia. Ocular neovascularization is strongly associated with inflammation, but the source of inflammatory signals and the mechanisms by which these signals regulate the disruption of avascular privilege in photoreceptors are unknown. In this study, we found that c-Fos, a master inflammatory regulator, was increased in photoreceptors in a model of pathological blood vessels invading photoreceptors: the very low-density lipoprotein receptor-deficient (Vldlr(-/-) ) mouse...
May 2, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28460049/tumor-necrosis-factor-alpha-tnf-%C3%AE-disrupts-kir4-1-channel-expression-resulting-in-m%C3%A3-ller-cell-dysfunction-in-the-retina
#7
Iraj Hassan, Qianyi Luo, Sreeparna Majumdar, James M Dominguez, Julia V Busik, Ashay D Bhatwadekar
Purpose: Diabetic patients often are affected by vision problems. We previously identified diabetic retinopathy (DR) as a disease of clock gene dysregulation. TNF-α, a proinflammatory cytokine, is known to be elevated in DR. Müller cells maintain retinal water homeostasis and K+ concentration via Kir4.1 channels. Notably, Kir4.1 expression is reduced in diabetes; however, the interplay of TNF-α, Kir4.1, and clock genes in Müller cells remains unknown. We hypothesize that the Kir4...
May 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28450685/acyclovir-resistant-acute-herpes-simplex-encephalitis-associated-with-acute-retinal-necrosis-a-case-report-and-review-of-the-literature
#8
Haruchika Ogura, Jiro Fukae, Satoshi Kimura, Mikiko Aoki, Kazuki Nabeshima, Yoshio Tsuboi
A 55-year-old man was admitted to our hospital for investigation of high fever, decreased consciousness and bilateral visual impairment. His cerebrospinal fluid analysis revealed pleocytosis of mononuclear cells and an increased protein concentration. FLAIR images revealed multiple high-intensity lesions in the frontal lobe, part of which was enhanced with gadolinium. Despite initiating treatment with acyclovir and corticosteroids, his consciousness and visual acuity deteriorated. Immunopathological examination of brain biopsies showed numerous herpes simplex virus type 2-positive neurons and macrophages, leading to a diagnosis of herpes simplex encephalitis (HSE)...
April 28, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28434069/herpes-zoster-keratitis-development-after-acute-retinal-necrosis
#9
Waseem H Ansari, Francesco Pichi, Paula E Pecen, Careen Y Lowder, Sunil K Srivistava
PURPOSE: To report a case of herpes zoster keratitis in a patient undergoing treatment for herpetic acute retinal necrosis. METHODS: Case report. RESULTS: A 71 year old male presented with acute retinal necrosis of the left eye due to herpes zoster and was treated with intravitreal foscarnet and oral valcyclovir. He developed a retinal detachment and underwent surgical repair. After four weeks, he developed an ipsilateral herpetic zoster keratitis demonstrated by Rose-Bengal staining that was responsive to topical ganciclovir gel...
April 22, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28432417/exploring-the-possibility-of-a-retrograde-embolism-pathway-from-the-facial-artery-to-the-ophthalmic-artery-system-in-vivo
#10
Hui Zheng, Lihong Qiu, Zonghui Liu, Yingjun Su, Xinyuan Pan, Sha Liu, Chenggang Yi
BACKGROUND: Blindness caused by soft tissue fillers is an extremely low-probability event, but it results in great concern because of its devastating consequences. Currently, the mechanism of an embolism is usually considered to be an accidental injection of fillers into the blood vessels of the face, such as a facial artery, and then retrograding into the ophthalmic artery system, which causes retinal ischemic necrosis. In addition, previous studies have shown that there are anastomoses between facial arteries and branches of the ophthalmic artery in cadavers...
April 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28429669/what-can-pharmacological-models-of-retinal-degeneration-tell-us
#11
M H Reisenhofer, J Balmer, V Enzmann
Animal models with pharmacologically induced retinal degeneration including sodium iodate (NaIO3) and N-methyl-N-nitrosourea (MNU) have been extensively used in ophthalmic research to investigate retinal degeneration. NaIO3 induces degeneration of the retinal pigment epithelium (RPE) followed by photoreceptor (PRC) cell death, mimicking features of age-related macular degeneration. In contrast, MNU leads to rapid destruction of the PRCs only, enabling the use of the MNU model to investigate degeneration induced in retinitis pigmentosa...
March 31, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28420575/correlation-of-various-serum-biomarkers-with-the-severity-of-diabetic-retinopathy
#12
M Nalini, B V Raghavulu, A Annapurna, P Avinash, Vishala Chandi, N Swathi, Wasim
Hyperglycemia induced inflammation and angiogenic factors are implicated as a contributor to the onset and progression of diabetic retinopathy (DR) in type 2 diabetes mellitus patients (T2DM). Tumor necrosis factor (TNF-alpha) and C-reactive protein (CRP) are inflammatory cytokines which induce retinal VEGF and are involved in the progression of proliferative diabetic retinopathy (PDR). Therefore the aim of the present study is to investigate the relationship between diabetic retinopathy and systemic inflammation in patients with type 2 diabetes mellitus...
April 8, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28412300/mechanisms-of-retinal-damage-after-ocular-alkali-burns
#13
Eleftherios I Paschalis, Chengxin Zhou, Fengyang Lei, Nathan Scott, Vassiliki Kapoulea, Marie-Claude Robert, Demetrios Vavvas, Reza Dana, James Chodosh, Claes H Dohlman
Alkali burns to the eye constitute a leading cause of worldwide blindness. In recent case series, corneal transplantation revealed unexpected damage to the retina and optic nerve in chemically burned eyes. We investigated the physical, biochemical, and immunological components of retinal injury after alkali burn and explored a novel neuroprotective regimen suitable for prompt administration in emergency departments. Thus, in vivo pH, oxygen, and oxidation reduction measurements were performed in the anterior and posterior segment of mouse and rabbit eyes using implantable microsensors...
June 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28409025/the-impact-of-the-menstrual-cycle-on-perioperative-bleeding-in-vitreoretinal-surgery
#14
Zhong Lin, Nived Moonasar, Rong Han Wu, Robin R Seemongal-Dass
Purpose. To investigate the effect of menstrual cycle on perioperative bleeding of primary vitreoretinal surgery. Methods. Data on female patients who had vitrectomy surgery was retrospectively collected. Exclusion criteria were history of trauma, vitreous hemorrhage, previous vitreoretinal surgery, diabetic retinopathy, endophthalmitis, acute retinal necrosis, single vitreous opacity, and use of antiplatelet agents. Perioperative bleeding was defined as hemorrhage in the iris, vitreous, choroidal, retina, or subretina during surgery or up to one day postoperatively...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28395298/cytokines-and-chemokines-involved-in-acute-retinal-necrosis
#15
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/28393026/effect-of-bevacizumab-on-the-expression-of-fibrosis-related-inflammatory-mediators-in-arpe-19-cells
#16
San-Jun Chu, Zhao-Hua Zhang, Min Wang, Hai-Feng Xu
AIM: To investigate the effect of anti-vascular epithelial growth factor (VEGF) agents on the expression of fibrosis-related inflammatory mediators under normoxic and hypoxic conditions, and to further clarify the mechanism underlying fibrosis after anti-VEGF therapy. METHODS: Human retinal pigment epithelial (RPE) cells were incubated under normoxic and hypoxic conditions. For hypoxia treatment, CoCl2 at 200 µmol/L was added to the media. ARPE-19 cells were treated as following: 1) control group: no treatment; 2) bevacizumab group: bevacizumab at 0...
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28359629/-multimodal-imaging-in-primary-intraocular-lymphoma
#17
S Santos, M L Le Lez, S Arsène, P J Pisella
INTRODUCTION: Vitreoretinal lymphoma is a serious disease with highly varied clinical presentations. The goal of this work is to identify the various presentations (clinical, imaging) in order to improve screening for this disease. MATERIALS AND METHOD: We collected data of patients followed on our service for vitreoretinal lymphoma. The fundus exam, autofluorescence and angiography data were classified in order to identify signs, which might lead to earlier diagnosis of lymphoma...
April 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28358222/valacyclovir-as-initial-treatment-for-acute-retinal-necrosis-a-pharmacokinetic-modeling-and-simulation-study
#18
Tao Liu, Aabha Jain, Michael Fung, Christopher Vinnard, Vijay Ivaturi
PURPOSE: Acute retinal necrosis (ARN) is a feared complication of infectious retinitis most commonly caused by varicella zoster virus (VZV). We performed a pharmacokinetic modeling and simulation study by integrating the existing understanding of physiology with previously published data to evaluate the vitreal penetration of oral valacyclovir for the treatment of ARN, under various dosing scenarios. METHOD: We compared different oral valacyclovir dosing regimens with intravenous acyclovir...
March 30, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28346545/aqueous-cytokine-levels-are-associated-with-reduced-macular-thickness-after-intravitreal-ranibizumab-for-diabetic-macular-edema
#19
Tomoyasu Shiraya, Satoshi Kato, Fumiyuki Araki, Takashi Ueta, Tempei Miyaji, Takuhiro Yamaguchi
PURPOSE: It is controversial whether the administration of anti-vascular endothelial growth factor drugs for diabetic macular edema (DME) affects intraocular inflammatory cytokines. In this study, we measured cytokine concentration in aqueous humor before and after intravitreal injection of ranibizumab (IVR). The aim was to determine changes in cytokine concentration and their effects on DME reduction. METHODS: Twelve patients (13 eyes) with DME received two IVR (0...
2017: PloS One
https://www.readbyqxmd.com/read/28302155/a-prospective-randomised-placebo-controlled-double-masked-three-armed-multicentre-phase-ii-iii-trial-for-the-study-of-a-topical-treatment-of-ischaemic-central-retinal-vein-occlusion-to-prevent-neovascular-glaucoma-the-strong-study-study-protocol-for-a-randomised
#20
Katrin Lorenz, Yvonne Scheller, Katharina Bell, Franz Grus, Katharina A Ponto, Felix Bock, Claus Cursiefen, Jens Flach, Marta Gehring, Tunde Peto, Rufino Silva, Yossi Tal, Norbert Pfeiffer
BACKGROUND: Neovascular glaucoma (NVG) is rare, comprising only 3.9% of all glaucoma cases. The most common cause of NVG is ischaemic central retinal vein occlusion (iCRVO). NVG frequently results in blindness and painful end-stage glaucomatous damage leading to the need for enucleation. Currently, there is no preventive therapy for NVG following iCRVO. Rescue treatments have severe drawbacks. Accordingly, there is a great need for preventing the often visually devastating outcomes of NVG...
March 16, 2017: Trials
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