Ophthalmology Commons^™

Human Igg1 Antibodies Suppress Angiogenesis In A Target-Independent Manner, Sasha Bogdanovich, Younghee Kim, Takeshi Mizutani, Reo Yasuma, Laura Tudisco, Valeria Cicatiello, Ana Bastos-Carvalho, Nagaraj Kerur, Yoshio Hirano, Judit Z. Baffi, Valeria Tarallo, Shengjian Li, Tetsuhiro Yasuma, Parthasarathy Arpitha, Benjamin James Fowler, Charles B. Wright, Ivana Apicella, Adelaide Greco, Arturo Brunetti, Menotti Ruvo, Annamaria Sandomenico, Miho Nozaki, Ryo Ijima, Hiroki Kaneko, Yuichiro Ogura, Hiroko Terasaki, Balamurali K. Ambati, Jeanette H. W. Leusen, Wallace Y. Langdon, Michael R. Clark, Bradley D. Gelfand, Jayakrishna Ambati

Ophthalmology and Visual Science Faculty Publications

Aberrant angiogenesis is implicated in diseases affecting nearly 10% of the world’s population. The most widely used anti-angiogenic drug is bevacizumab, a humanized IgG1 monoclonal antibody that targets human VEGFA. Although bevacizumab does not recognize mouse Vegfa, it inhibits angiogenesis in mice. Here we show bevacizumab suppressed angiogenesis in three mouse models not via Vegfa blockade but rather Fc-mediated signaling through FcγRI (CD64) and c-Cbl, impairing macrophage migration. Other approved humanized or human IgG1 antibodies without mouse targets (adalimumab, alemtuzumab, ofatumumab, omalizumab, palivizumab and tocilizumab), mouse IgG2a, and overexpression of human IgG1-Fc or mouse IgG2a-Fc, also inhibited angiogenesis in wild-type …

Frequency Of Retinopathy Of Prematurity In Premature Neonates With A Birth Weight Below 1500 Grams And A Gestational Age Less Than 32 Weeks: A Study From A Tertiary Care Hospital In A Lower-Middle Income Country, Arjumand Sohaila, Shiyam Sunder Tikmani, Iqtidar Ahmed Khan, Huba Atiq, Ali Syed Muhammad Akhtar, Prem Kumar, Kishwer Kumar

Department of Emergency Medicine

Introduction: Retinopathy of prematurity (ROP) is a treatable cause of blindness in neonates. In Pakistan, ROP is often not recognized early because screening and treatment programs are not yet in place in most neonatal units, even in tertiary care hospitals. It is hoped that this report will help inform medical professionals of the magnitude of the problem and help to design appropriate management strategies.

Objectives: The aim was to determine the frequency of ROP in premature and very low birth weight (BW) neonates (BW(GA)weeks).

Study Design: Cross-sectional study.

Study Setting : Neonatal intensive care unit (NICU) of a tertiary care …

In Adult Patients With Diabetic Macular Edema Are Intravetrial Bevacizumab Injections More Effective Than Laser Therapy At Improving Best-Corrected Visual Acuity?, Heather Bladek

PCOM Physician Assistant Studies Student Scholarship

OBJECTIVE: The objective of this selective EBM review is to determine whether or not in adult patients with diabetic macular edema intravetrial bevacizumab injections are more effective than laser therapy at improving best-corrected visual acuity.

STUDY DESIGN: Review of three English language non-blinded randomized control trials from 2010 and 2012.

DATA SOURCES: Non-blinded randomized control trials comparing intravetrial bevacizumab injections to macular laser therapy found using Pubmed and EBSCOhost web databases. All articles were published in peer-reviewed journals.

OUTCOMES MEASURED: The primary outcome of best-corrected visual acuity (BCVA) was measured using the Early Treatment of Diabetic …

One Student One Family And The Mozambique Eyecare Project, Stephen Thompson, Aoife Phelan, Tatiana Santana, Elizebete Catarino, Vivien Ocampo, Cesar Faria, James Loughman

Articles

Background - The Mozambique Eyecare Programme is funded by Irish Aid and designed to address the need for optometric education in Lusophone Africa. It is a multi-partner collaboration between Universidade Lúrio, Mozambique, Technological University Dublin, Ireland, University of Ulster, Northern Ireland, and The International Centre for Eyecare Education (ICEE) an international Non Government Organisation. A key output from the programme is the development of an optometry school based at Universidade Lúrio, the first of its kind in Mozambique. The aim is to address unmet eye care needs through human resource development.

All students enrolled at Universidade Lúrio, including the optometry …

The Mozambique Eyecare Project: Implementing A Model That Addresses Uncorrected Refractive Error In Lusophone Africa., Stephen Thompson, Diane Wallace

Conference Papers

BACKGROUND

Optometric education and resources are drastically deficient in most of Africa, more so in Lusophone Africa where the problem is compounded by language barriers which isolate these countries from related developments in Africa and/or the developed world.

The Mozambique Eyecare Programme is a multi-partner collaboration between The International Centre for Eyecare Education (ICEE), Universidade Lúrio in Mozambique, Technological University Dublin, and the University of Ulster in Ireland, designed to address the need for optometric education in Lusophone Africa.

AIM

This paper aims to document the current situation with regards to human resource development in eyecare in Mozambique and offer …

Molecular Confirmation Of The Causes Of Inherited Visual Impairment In Northern Pakistan, Mehreen Adhi, Yasmin Rashid, Syed Hussain Jafri, Chris F. Inglehearn, Martin Mc Kibbin

Department of Medicine

Families with inherited visual impairment were identified and examined from January 2000 to December 2005 and given a clinical diagnosis. Known genes and loci were screened for mutations or linkage at Institute of Ophthalmology and Neurosciences, University of Leeds, in order to provide molecular confirmation. Inherited retinal disease was the most common cause of inherited visual impairment in 38 of 57 families (66.6%) with Leber’s congenital amaurosis, rod-cone dystrophy and cone-rod dystrophy being the most common diagnoses in 22, 8 and 3 families respectively. Anterior segment dysgenesis was diagnosed in 8 families (14%). Mutations in known genes or linkage to …

Accumulation Of Rhodopsin In Late Endosomes Triggers Photoreceptor Cell Degeneration, Yashodhan Chinchore, Amitavo Mitra, Patrick J. Dolph, Norbert Perrimon

Dartmouth Scholarship

Progressive retinal degeneration is the underlying feature of many human retinal dystrophies. Previous work using Drosophila as a model system and analysis of specific mutations in human rhodopsin have uncovered a connection between rhodopsin endocytosis and retinal degeneration. In these mutants, rhodopsin and its regulatory protein arrestin form stable complexes, and endocytosis of these complexes causes photoreceptor cell death. In this study we show that the internalized rhodopsin is not degraded in the lysosome but instead accumulates in the late endosomes. Using mutants that are defective in late endosome to lysosome trafficking, we were able to show that rhodopsin accumulates …

Fas-Fasl Interaction Involved In Pathogenesis Of Ocular Toxoplasmosis In Mice, Mark S. Hu, Joseph D. Schwartzman, Grant R. Yeaman, Jane Collins, Rosanne Seguin, Imtiaz A. Khan, Lloyd H. Kasper

Dartmouth Scholarship

Ocular toxoplasmosis is a potentially blinding intraocular inflammation. The intent of this study was to investigate the role of Fas-FasL interaction in a murine model of acquired ocular toxoplasmosis induced by intracameral inoculation of Toxoplasma gondii. Intraocular inflammation, Fas and FasL expression on lymphocytes and on ocular tissues, the occurrence of apoptosis, and the frequency of CD8⁺ and CD4⁺ T cells in the infected eyes were analyzed in C57BL/6 (B6) mice. Susceptibility to parasite-induced intraocular inflammation was observed in Fas-deficient (B6-lpr) and FasL-deficient (B6-gld) mice. Inoculation of 5,000 T. gondii tachyzoites induced significant …