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https://www.readbyqxmd.com/read/28338404/effect-of-histone-deacetylase-inhibitor-butyroyloxymethyl-diethyl-phosphate-an-7-on-corneal-neovascularization-in-a-mouse-model
#1
Michal Schaap-Fogler, Irit Bahar, Ada Rephaeli, Mor Dahbash, Abraham Nudelman, Eitan Livny, Tilda Barliya, Yael Nisgav, Tami Livnat
PURPOSE: To examine whether butyroyloxymethyl-diethyl phosphate (AN-7), a histone deacetylase inhibitor, inhibits chemically induced corneal neovascularization (NV) in mice. METHODS: Corneal NV was induced in the right eye of male C57BL mice by application of a mixture of 75% silver nitrate and 25% potassium nitrate to the corneal center. Immediately thereafter, the mice were randomized into 2 groups, receiving an intraperitoneal injection of AN-7 or saline, which served as control...
March 24, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28337307/effects-of-microrna-29a-on-retinopathy-of-prematurity-by-targeting-agt-in-a-mouse-model
#2
Xin-Ke Chen, Li-Juan Ouyang, Zheng-Qin Yin, Yuan-You Xia, Xiu-Rong Chen, Hui Shi, Yan Xiong, Lian-Hong Pi
BACKGROUND: This study aimed to explore the effects of microRNA-29a (miR-29a) on retinopathy of prematurity (ROP) by targeting angiotensinogen (AGT) expression in a mouse model. METHODS: Ninety-six C57BL/6J mice were selected and divided into the normal control group (n = 12) and the oxygen-induced retinopathy (OIR) group (n = 84). All the mice in the OIR group were assigned to the following seven groups (12 mice in each group): the blank, miR-29a mimics, miR-29a inhibitors, empty plasmid, miR-29a mimics + si-AGT, miR-29a inhibitors + si-AGT and si-AGT groups...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28336424/the-impact-of-oxidative-stress-and-inflammation-on-rpe-degeneration-in-non-neovascular-amd
#3
REVIEW
Sayantan Datta, Marisol Cano, Katayoon Ebrahimi, Lei Wang, James T Handa
The retinal pigment epithelium (RPE) is a highly specialized, unique epithelial cell that interacts with photoreceptors on its apical side and with Bruch's membrane and the choriocapillaris on its basal side. Due to vital functions that keep photoreceptors healthy, the RPE is essential for maintaining vision. With aging and the accumulated effects of environmental stresses, the RPE can become dysfunctional and die. This degeneration plays a central role in age-related macular degeneration (AMD) pathobiology, the leading cause of blindness among the elderly in western societies...
March 20, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28336284/macular-pigment-density-variation-after-supplementation-of-lutein-and-zeaxanthin-using-the-visucam-%C3%A2-200-pigment-module-impact-of-age-related-macular-degeneration-and-lens-status
#4
G Azar, M Quaranta-El Maftouhi, J-J Masella, M Mauget-Faÿsse
PURPOSE: To assess the evolution of macular pigment optical density (MPOD) following supplementation with various macular formulations obtained with the Visucam(®) 200, and to study the factors affecting MPOD measurements. MATERIALS AND METHODS: In this prospective, randomized, double-masked multicenter study, patients were divided into 2 groups: group A (patients without retinal pathology who underwent cataract surgery 1 month previously) and group B (patients with neovascular age-related macular degeneration [AMD] in one eye)...
March 20, 2017: Journal Français D'ophtalmologie
https://www.readbyqxmd.com/read/28336128/retinal-pigment-epithelium-tears-classification-pathogenesis-predictors-and-management
#5
REVIEW
Mehmet Giray Ersoz, Murat Karacorlu, Serra Arf, Isil Sayman Muslubas, Mumin Hocaoglu
Various eye conditions cause tears in the retinal pigment epithelium (RPE). The most common cause of an RPE tear is vascularized retinal pigment epithelial detachment (PED) in patients with exudative age-related macular degeneration. Although RPE tears can develop spontaneously in vascularized PEDs, most recent cases have been associated with anti-vascular endothelial growth factor (VEGF) injections. The subretinal fluid within the PED applies hydrostatic pressure to the RPE and stretches it. The PED enlarges as the hydrostatic pressure increases...
March 20, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28334374/chronic-systemic-interleukin-18-does-not-promote-macular-degeneration-or-choroidal-neovascularization
#6
Scott W Canna, Guangpu Shi, Igal Gery, H Nida Sen
No abstract text is available yet for this article.
March 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28333879/intravitreal-aflibercept-injection-for-choroidal-neovascularization-due-to-presumed-ocular-histoplasmosis-syndrome-the-handle-study
#7
Brian W Toussaint, John W Kitchens, Dennis M Marcus, Daniel M Miller, Megan L Kingdon, Diana Holcomb, Ken Ivey
PURPOSE: To evaluate intravitreal aflibercept injection (IAI) in patients with presumed ocular histoplasmosis syndrome and choroidal neovascularization. METHODS: Open-label randomized Phase I/II study of IAI in patients with presumed ocular histoplasmosis syndrome-related choroidal neovascularization. Thirty-nine eyes from 39 patients were randomized in a 1:1 ratio to 2 groups. The Sustained Group eyes (n = 19) underwent monthly IAI for 3 months, then mandatory IAI every 2 months for 12 months (with an option for monthly PRN dosing, if needed)...
March 22, 2017: Retina
https://www.readbyqxmd.com/read/28333854/presumed-retinal-pigment-epithelium-tumor-originating-from-unilateral-retinal-pigment-epithelium-dysgenesis
#8
Orly Gal-Or, Paul T Finger, Yale L Fisher, Lawrence A Yannuzzi, K Bailey Freund
PURPOSE: To describe a patient with a presumed retinal pigment epithelium (RPE) tumor originating from unilateral RPE dysgenesis. METHODS: Case report. RESULTS: A 30-year-old woman with an unremarkable medical and ocular history was referred for an evaluation of progressive central metamorphopsia in her left eye. Visual acuity was 20/20 in her right eye and 20/25 in her left eye. Funduscopic examination of the left eye revealed an elevated mass within an area of unilateral RPE dysgenesis showing hyperpigmentation and hypopigmentation with scalloped margins...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28333783/dome-shaped-macula-in-myopic-eyes-twelve-month-follow-up
#9
Daniel Lorenzo, Luis Arias, Netan Choudhry, Eduard Millan, Ignacio Flores, Marcos J Rubio, Estefanía Cobos, Pere García-Bru, Alejandro Filloy, Josep M Caminal
PURPOSE: To study the long-term clinical course of dome-shaped macula in myopic eyes and to evaluate treatment efficacy for subretinal fluid (SRF) as a related complication. METHODS: A retrospective, single-center consecutive case series study was conducted. The authors analyzed myopic eyes with dome-shaped macula in patients who presented for evaluation of decreased vision. Dome-shaped macula was defined as a convexity of the retina-choroidal macular complex seen on spectral domain optical coherence tomography images...
April 2017: Retina
https://www.readbyqxmd.com/read/28333756/depth-resolved-imaging-of-papillary-vitreoretinal-neovascularization-oct-angiography-assessment-in-ocular-ischemic-syndrome
#10
Marco Lupidi, Tito Fiore, Alessio Cerquaglia, Gabriel Coscas, Carlo Cagini
No abstract text is available yet for this article.
April 2017: Retina
https://www.readbyqxmd.com/read/28333572/new-insights-on-complement-inhibitor-cd59-in-mouse-laser-induced-choroidal-neovascularization-mislocalization-after-injury-and-targeted-delivery-for-protein-replacement
#11
Gloriane Schnabolk, Mee Keong Beon, Stephen Tomlinson, Bärbel Rohrer
PURPOSE: The membrane attack complex (MAC) in choriocapillaris (CC) and retinal pigment epithelium (RPE) increase with age and disease (age-related macular degeneration). MAC assembly can be inhibited by CD59, a membrane-bound regulator. Here we further investigated the role of CD59 in murine choroidal neovascularization (CNV), a model involving both CC and RPE, and tested whether CR2-CD59, a soluble targeted form of CD59, provides protection. METHODS: Laser-induced CNV was generated in wild type and CD59a-deficient mice (CD59(-/-))...
March 23, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28332616/long-acting-protein-drugs-for-the-treatment-of-ocular-diseases
#12
Joy G Ghosh, Andrew A Nguyen, Chad E Bigelow, Stephen Poor, Yubin Qiu, Nalini Rangaswamy, Richard Ornberg, Brittany Jackson, Howard Mak, Tucker Ezell, Vania Kenanova, Elisa de la Cruz, Ana Carrion, Bijan Etemad-Gilbertson, Roxana Garcia Caro, Kan Zhu, Vinney George, Jirong Bai, Radhika Sharma-Nahar, Siyuan Shen, Yiqin Wang, Kulandayan K Subramanian, Elizabeth Fassbender, Michael Maker, Shawn Hanks, Joanna Vrouvlianis, Barrett Leehy, Debby Long, Melissa Prentiss, Viral Kansara, Bruce Jaffee, Thaddeus P Dryja, Michael Roguska
Protein drugs that neutralize vascular endothelial growth factor (VEGF), such as aflibercept or ranibizumab, rescue vision in patients with retinal vascular diseases. Nonetheless, optimal visual outcomes require intraocular injections as frequently as every month. Here we report a method to extend the intravitreal half-life of protein drugs as an alternative to either encapsulation or chemical modifications with polymers. We combine a 97-amino-acid peptide of human origin that binds hyaluronan, a major macromolecular component of the eye's vitreous, with therapeutic antibodies and proteins...
March 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28332318/a-novel-bispecific-molecule-delivered-by-recombinant-aav2-suppresses-ocular-inflammation-and-choroidal-neovascularization
#13
Yiming Li, Ping Zhu, Amrisha Verma, Tuhina Prasad, Hongxin Deng, Dechao Yu, Qiuhong Li
Elevated vascular endothelial growth factor (VEGF) and complement activation are implicated in the pathogenesis of different ocular diseases. The objective of this study was to investigate the hypothesis that dual inhibition of both VEGF and complement activation would confer better protection against ocular inflammation and neovascularization. In this study, we engineered a secreted chimeric VEGF inhibitor domain (VID), a complement inhibitor domain (CID) and a dual inhibitor (ACVP1). Vectors expressing these three inhibitors were constructed and packaged into AAV2 (sextY-F) particles...
March 22, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28330905/secretogranin-iii-as-a-disease-associated-ligand-for-antiangiogenic-therapy-of-diabetic-retinopathy
#14
Michelle E LeBlanc, Weiwen Wang, Xiuping Chen, Nora B Caberoy, Feiye Guo, Chen Shen, Yanli Ji, Hong Tian, Hui Wang, Rui Chen, Wei Li
Diabetic retinopathy (DR) is a leading cause of vision loss with retinal vascular leakage and/or neovascularization. Current antiangiogenic therapy against vascular endothelial growth factor (VEGF) has limited efficacy. In this study, we applied a new technology of comparative ligandomics to diabetic and control mice for the differential mapping of disease-related endothelial ligands. Secretogranin III (Scg3) was discovered as a novel disease-associated ligand with selective binding and angiogenic activity in diabetic but not healthy vessels...
March 22, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28327135/stratification-of-phaco-trabectome-surgery-results-using-a-glaucoma-severity-index-in-a-retrospective-analysis
#15
Pritha Roy, Ralitsa T Loewen, Yalong Dang, Hardik A Parikh, Igor I Bussel, Nils A Loewen
BACKGROUND: To stratify the outcomes of phacoemulsification combined with trabectome surgery using a new glaucoma severity index. METHODS: This is a retrospective, observational cohort study that included open angle glaucoma patients with visually significant cataract that had phacoemulsification combined with trabectome surgery. Exclusion criteria were follow-up less than 12 months, any other surgeries or diagnosis of neovascular or active uveitic glaucoma. Patients were stratified into four groups according to the Glaucoma Index (GI) that incorporated preoperative intraocular pressure (IOP), number of medications and visual field status...
March 21, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/28326537/gax-suppresses-chemerin-cmklr1-induced-preadipocyte-biofunctions-through-the-inhibition-of-akt-mtor-and-erk-signaling-pathways
#16
Yunqi Jiang, Ping Liu, Wenlin Jiao, Juan Meng, Jinbo Feng
Adipose tissue is closely associated with angiogenesis and vascular remodeling. Chemerin is involved in inflammatory reaction and vascular dysfunction. However, the mechanisms of chemerin participating in vascular remodeling and whether Growth arrest-specific homeobox (Gax) can effectively intervene it remain obscured. Here, 3T3-F442A preadipocytes were cultured, injected into athymic mice to model fat pads, and treated respectively with Ad-chemerin, Ad-Gax, or specific inhibitors in vitro and in vivo. MTT, flow cytometry, Western blotting, and imunohisto(cyto)-chemistry analyses showed that chemerin enhanced the expression of FABP4 and VEGF, activated Akt/mTOR and ERK pathways, increased the cell percent of S phase, decreased the percent of G0-G1 phase and apoptotic cells, and augmented neovascular density in fat pads...
March 21, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28325782/aibp-limits-angiogenesis-thorough-%C3%AE-secretase-mediated-upregulation-of-notch-signaling
#17
Renfang Mao, Shu Meng, Qilin Gu, Raquel Araujo-Gutierrez, Sandeep Kumar, Qing Yan, Felicidad Almazan, Keith A Youker, Yingbin Fu, Henry J Pownall, John P Cooke, Yury I Miller, Longhou Fang
Rationale: Angiogenesis improves perfusion to the ischemic tissue following acute vascular obstruction. Angiogenesis in pathophysiological settings reactivates signaling pathways involved in developmental angiogenesis. We showed previously that apoA-I binding protein (AIBP)-regulated cholesterol efflux in endothelial cells (ECs) controls zebrafish embryonic angiogenesis. Objective: This study is to determine whether loss of AIBP affects angiogenesis in mice during development and under pathological conditions, and to explore the underlying molecular mechanism...
March 21, 2017: Circulation Research
https://www.readbyqxmd.com/read/28325297/engineering-of-pedf-expressing-primary-pigment-epithelial-cells-by-the-sb-transposon-system-delivered-by-pfar4-plasmids
#18
Gabriele Thumann, Nina Harmening, Cécile Prat-Souteyrand, Corinne Marie, Marie Pastor, Attila Sebe, Csaba Miskey, Laurence D Hurst, Sabine Diarra, Martina Kropp, Peter Walter, Daniel Scherman, Zoltán Ivics, Zsuzsanna Izsvák, Sandra Johnen
Neovascular age-related macular degeneration (nvAMD) is characterized by choroidal blood vessels growing into the subretinal space, leading to retinal pigment epithelial (RPE) cell degeneration and vision loss. Vessel growth results from an imbalance of pro-angiogenic (e.g., vascular endothelial growth factor [VEGF]) and anti-angiogenic factors (e.g., pigment epithelium-derived factor [PEDF]). Current treatment using intravitreal injections of anti-VEGF antibodies improves vision in about 30% of patients but may be accompanied by side effects and non-compliance...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28325294/therapeutic-effect-of-novel-single-stranded-rnai-agent-targeting-periostin-in-eyes-with-retinal-neovascularization
#19
Takahito Nakama, Shigeo Yoshida, Keijiro Ishikawa, Yuki Kubo, Yoshiyuki Kobayashi, Yedi Zhou, Shintaro Nakao, Toshio Hisatomi, Yasuhiro Ikeda, Kazumasa Takao, Kazunori Yoshikawa, Akira Matsuda, Junya Ono, Shoichiro Ohta, Kenji Izuhara, Akira Kudo, Koh-Hei Sonoda, Tatsuro Ishibashi
Retinal neovascularization (NV) due to retinal ischemia remains one of the principal causes of vision impairment in patients with ischemic retinal diseases. We recently reported that periostin (POSTN) may play a role in the development of preretinal fibrovascular membranes, but its role in retinal NV has not been determined. The purpose of this study was to examine the expression of POSTN in the ischemic retinas of a mouse model of oxygen-induced retinal NV. We also studied the function of POSTN on retinal NV using Postn KO mice and human retinal endothelial cells (HRECs) in culture...
March 17, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28324112/recurrence-of-retinopathy-of-prematurity-after-intravitreal-ranibizumab-monotherapy-timing-and-risk-factors
#20
Jiao Lyu, Qi Zhang, Chun-Li Chen, Yu Xu, Xun-Da Ji, Jia-Kai Li, Qiu-Jing Huang, Pei-Quan Zhao
Purpose: To investigate timing and risk factors of recurrent retinopathy of prematurity (ROP) after intravitreal ranibizumab (IVR) monotherapy. Methods: Fifty eyes (the more severe eye) of 50 infants treated with IVR monotherapy for type 1 ROP were studied retrospectively. The mean follow-up time was 31 weeks after IVR. Recurrent ROP (recurrence of extraretinal fibrovascular proliferation [EFP]) was determined by RetCam wide-angle fundus imaging and binocular indirect ophthalmoscopy...
March 1, 2017: Investigative Ophthalmology & Visual Science
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