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Diabetic retinopathy

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https://www.readbyqxmd.com/read/29777874/asymmetric-dimethylarginine-contributes-to-retinal-neovascularization-of-diabetic-retinopathy-through-ephrinb2-pathway
#1
Mei-Rong Du, Li Yan, Nian-Sheng Li, Yu-Jie Wang, Ting Zhou, Jun-Lin Jiang
Diabetic retinopathy (DR) is a leading cause of vision loss with retinal neovascularization. This study aims to investigate whether Asymmetric dimethylarginine (ADMA) impacts the pathogenesis of DR via focusing on promoting retinal neovascularization and its underlying molecular mechanisms. Diabetic rats were induced by a single intraperitoneal injection of streptozotocin (STZ) for 20 weeks. ADMA levels in aqueous and the influence of hypoxia on ADMA and angiogenesis in RF/6A cells were examined. The effects and underlying molecular mechanisms of ADMA on neovascularization of RF/6A cells were further evaluated by administration of ADMA, DDAH siRNA or ephrinB2 siRNA...
May 16, 2018: Vascular Pharmacology
https://www.readbyqxmd.com/read/29776866/hearing-impairment-in-type-2-diabetics-and-patients-with-early-diabetic-nephropathy
#2
Jianmin Ren, Fufu Ma, Yujing Zhou, Anting Xu, Jianjian Zhang, Rong Ma, Xiaoyan Xiao
AIMS: The study was to investigate the hearing function in subjects with non-diabetic nephropathy and diabetic nephropathy and analyze related clinical indexes of hearing impairment. METHODS: We assessed the hearing function of 30 diabetics (DM group), 30 patients with early diabetic nephropathy (DN group) and 30 healthy subjects (NC group) using pure-tone audiometry, otoacoustic emissions, electronystagmography, caloric test and cervical vestibular evoked myogenic potential (VEMP)...
April 5, 2018: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/29776672/half-dose-photodynamic-therapy-versus-high-density-subthreshold-micropulse-laser-treatment-in-patients-with-chronic-central-serous-chorioretinopathy-the-place-trial
#3
Elon H C van Dijk, Sascha Fauser, Myrte B Breukink, Rocio Blanco-Garavito, Joannes M M Groenewoud, Jan E E Keunen, Petrus J H Peters, Greet Dijkman, Eric H Souied, Robert E MacLaren, Giuseppe Querques, Susan M Downes, Carel B Hoyng, Camiel J F Boon
PURPOSE: To compare the anatomic and functional efficacy and safety of half-dose photodynamic therapy (PDT) versus high-density subthreshold micropulse laser (HSML) treatment in patients with chronic central serous chorioretinopathy (cCSC). DESIGN: Open-label, multicenter, randomized controlled clinical trial. PARTICIPANTS: Patients with cCSC whose disease had to be confirmed by both clinical characteristics and findings on multimodal imaging...
May 15, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29776671/guidelines-on-diabetic-eye-care-the-international-council-of-ophthalmology-recommendations-for-screening-follow-up-referral-and-treatment-based-on-resource-settings
#4
REVIEW
Tien Y Wong, Jennifer Sun, Ryo Kawasaki, Paisan Ruamviboonsuk, Neeru Gupta, Van Charles Lansingh, Mauricio Maia, Wanjiku Mathenge, Sunil Moreker, Maji M K Muqit, Serge Resnikoff, Juan Verdaguer, Peiquan Zhao, Frederick Ferris, Lloyd P Aiello, Hugh R Taylor
Diabetes mellitus (DM) is a global epidemic and affects populations in both developing and developed countries, with differing health care and resource levels. Diabetic retinopathy (DR) is a major complication of DM and a leading cause of vision loss in working middle-aged adults. Vision loss from DR can be prevented with broad-level public health strategies, but these need to be tailored to a country's and population's resource setting. Designing DR screening programs, with appropriate and timely referral to facilities with trained eye care professionals, and using cost-effective treatment for vision-threatening levels of DR can prevent vision loss...
May 15, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29776352/surgical-peripheral-iridectomy-via-a-clear-cornea-phacoemulsification-incision-for-pupillary-block-following-cataract-surgery-in-acute-angle-closure
#5
Aiwu Fang, Peijuan Wang, Rui He, Jia Qu
BACKGROUND: To describe a technique of surgical peripheral iridectomy via a clear-cornea tunnel incision to prevent or treat pupillary block following phacoemulsification. METHODS: Description of technique and retrospective description results in 20 eyes of 20 patients with acute angle closure with coexisting visually significant cataract undergoing phacoemulsification considered at risk of postoperative papillary block as well as two pseudo-phakic eyes with acute postoperative pupillary-block...
May 18, 2018: BMC Ophthalmology
https://www.readbyqxmd.com/read/29775089/detection-of-perimacular-red-dots-and-blots-when-screening-for-diabetic-retinopathy-refer-or-not-refer
#6
Anatolie Baltatescu, Elio Striglia, Marina Trento, Aurora Mazzeo, Franco Cavallo, Lorena Charrier, Massimo Porta
PURPOSE: Detection of microaneurysms and/or microhaemorrhages near the fovea when screening for diabetic retinopathy poses a problem because referral to retinal specialists may alarm patients and unnecessarily burden ophthalmologists. METHODS: Six-month prospective study of patients found to have minimal red lesions within one disc diameter of the fovea when screened for diabetic retinopathy. Two 45° digital photographs, one centred on the macula and the other nasal including the optic disc, were taken for each eye...
May 1, 2018: Diabetes & Vascular Disease Research
https://www.readbyqxmd.com/read/29773942/relationship-between-diabetes-knowledge-glycemic-control-and-associated-health-conditions
#7
Emily Phillips, Rabia Rahman, Mildred Mattfeldt-Beman
Objective: The purpose of this study was to identify any existing relationship between diabetes knowledge and glycemic control, as well as possible associations with patient health, among patients with type 2 diabetes. Design and Methods: This qualitative study used a validated multiple-choice test (the Michigan Diabetes Knowledge Test) to assess diabetes knowledge among 17 hospital patients between the ages of 18 and 75 years with type 2 diabetes and a recent (within 3 months) A1C laboratory value...
May 2018: Diabetes Spectrum: a Publication of the American Diabetes Association
https://www.readbyqxmd.com/read/29773939/retinopathy-and-mortality
#8
Emily Frith, Paul D Loprinzi
Objective: We evaluated the specific association between retinopathy and all-cause mortality among a national sample of the broader U.S. adult population. Methods: Data from the 2005-2008 National Health and Nutrition Examination Survey were used to identify 4,777 adults with complete data regarding screening for nonproliferative retinopathy using Early Treatment Diabetic Retinopathy Study grading criteria, as well as objective retinal imaging assessments using the Canon Non-Mydriatic Retinal Camera CR6-45NM...
May 2018: Diabetes Spectrum: a Publication of the American Diabetes Association
https://www.readbyqxmd.com/read/29766782/role-of-oxidative-stress-in-diabetic-retinopathy-and-the-beneficial-effects-of-flavonoids
#9
Mohammad Shamsul Ola, Dalia Al-Dosari, Abdullah S Alhomida
Diabetic retinopathy (DR) is one of the leading causes of decreased vision and blindness in developed countries. Diabetes-induced metabolic disorder is believed to increase oxidative stress in the retina. This results in deleterious changes through dysregulation of cellular physiology that damages both neuronal and vascular cells. Here in this review, we first highlight the evidence of potential metabolic sources and pathways which increase oxidative stress that contributes to retinal pathology in diabetes...
May 15, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29765199/the-development-of-a-reference-database-with-the-topcon-3d-oct-1-maestro
#10
Michael Chaglasian, Murray Fingeret, Pinakin Gunvant Davey, Wei-Chieh Huang, Danny Leung, Edmund Ng, Charles A Reisman
Importance: The paper presents the range for measurements taken with a new spectral domain optical coherence tomography (OCT) device to establish a reference database for discrimination purposes. Objective: To report the range of thickness values for the new Topcon Maestro 3D OCT device with 2 scan size settings: the 12×9 mm wide field and 6×6 mm scans. Design: Prospective, multicenter cohort study conducted at 7 clinical sites across the USA...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29761600/loss-of-angiotensin-converting-enzyme-2-exacerbates-diabetic-retinopathy-by-promoting-bone-marrow-dysfunction
#11
Yaqian Duan, Eleni Beli, Sergio Li Calzi, Judith L Quigley, Rehae C Miller, Leni Moldovan, Dongni Feng, Tatiana E Salazar, Sugata Hazra, Jude Al-Sabah, Kakarla V Chalam, Thao Le Phuong Trinh, Marya Meroueh, Troy A Markel, Matthew C Murray, Ruchi J Vyas, Michael E Boulton, Patricia Parsons-Wingerter, Gavin Y Oudit, Alexander G Obukhov, Maria B Grant
Angiotensin-converting enzyme 2 (ACE2) is the primary enzyme of the vasoprotective axis of the renin angiotensin system (RAS). We tested the hypothesis that loss of ACE2 would exacerbate diabetic retinopathy by promoting bone marrow dysfunction. ACE2-/y were crossed with Akita mice, a model of type 1 diabetes. When comparing the bone marrow of the ACE2-/y -Akita mice to that of Akita mice, we observed a reduction of both short-term and long-term repopulating hematopoietic stem cells, a shift of hematopoiesis towards myelopoiesis, and an impairment of lineage- c-kit+ hematopoietic stem/progenitor cell (HS/PC) migration and proliferation...
May 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29760992/effective-bidirectional-scanning-pattern-for-optical-coherence-tomography-angiography
#12
Myeong Jin Ju, Morgan Heisler, Arman Athwal, Marinko V Sarunic, Yifan Jian
We demonstrate the utility of a novel scanning method for optical coherence tomography angiography (OCTA). Although raster scanning is commonly used for OCTA imaging, a bidirectional approach would lessen the distortion caused by galvanometer-based scanners as sources continue to increase sweep rates. As shown, a unidirectional raster scan approach has a lower effective scanning time than bidirectional approaches; however, a strictly bidirectional approach causes contrast variation along the B-scan direction due to the non-uniform time interval between B-scans...
May 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29760812/effects-of-glucan-and-vitamin-d-supplementation-on-obesity-and-lipid-metabolism-in-diabetic-retinopathy
#13
Martina Závorková, Vaclav Vetvicka, Josef Richter, Vlastimil Kral, Ivana Liehnova, Dobiasova L Rajnohova
Background: Diabetes mellitus is a chronic disease manifested by an increase of blood glucose. Objective: To evaluate the effects of glucan and vitamin D supplementation in patients with diabetic retinopathy. Method: We evaluated the effects of 3-month supplementation with glucan and vitamin D in 54 patients with diabetic retinopathy. We measured levels of vitamin D, cholesterol, HDL cholesterol, and triglycerides. Results: The supplementation strongly decreased the cholesterol levels and improved the levels of HDL cholesterol...
2018: Open Biochemistry Journal
https://www.readbyqxmd.com/read/29758962/association-between-serum-magnesium-and-common-complications-of-diabetes-mellitus
#14
Yiyan Zhang, Qin Li, Yi Xin, Weiqi Lv, Chuanbin Ge
BACKGROUND: Magnesium ion, as important cation in the human body, involved in various enzymatic reactions, glucose transport and insulin release. Now diabetes mellitus and diabetic complications have become important public health problems around the world. OBJECTIVE: This paper explores the association between concentration levels of serum magnesium and common complications and comorbidities of diabetes mellitus and other biochemical indexes. METHODS: There are 1217 eligible patients selected from 14,317 cases of diabetic hospitalization patients from January 2010 to December 2011...
April 27, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29757814/macular-hole-formation-followed-by-spontaneous-closure-after-pneumatic-retinopexy-in-a-patient-with-diabetic-macular-edema
#15
Michael N Cohen, Caroline R Baumal
PURPOSE: To report early formation and spontaneous closure of a full-thickness macular hole that developed after successful pneumatic retinopexy in a patient who had been undergoing treatment for diabetic macular edema. METHODS: Case report of a 68-year-old man with bilateral nonproliferative diabetic retinopathy who was currently undergoing anti-vascular endothelial growth factor treatment for bilateral diabetic macular edema. RESULTS: On presentation, visual acuity was 20/200 in the left eye, and examination revealed a bullous, macula-off retinal detachment with a single horseshoe tear at 12 o'clock in the left eye...
May 10, 2018: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29756500/sirna-an-alternative-treatment-for-diabetes-and-associated-conditions
#16
Pravin Shende, Chirag Patel
Diabetes is a condition that is not completely treatable but life of a diabetic patient can be smoothed by preventing or delaying the associate conditions like diabetic retinopathy, nephropathy, impaired wound healing process etc. Apart from conventional methods to regulate diabetic condition, new techniques using siRNA have been emerged to prevent the associated conditions. This paper focuses on how siRNA used as a tool to silence the expression of genes which plays critical role in pathogenesis of these conditions...
May 14, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29756388/semaglutide-for-type-2-diabetes-mellitus-a-systematic-review-and-meta-analysis
#17
Panagiotis Andreadis, Thomas Karagiannis, Konstantinos Malandris, Ioannis Avgerinos, Aris Liakos, Apostolos Manolopoulos, Eleni Bekiari, David R Matthews, Apostolos Tsapas
AIM: To assess the efficacy and safety of semaglutide, a recently approved glucagon-like peptide 1 receptor agonist (GLP-1 RA) for type 2 diabetes. METHODS: We searched major electronic databases and grey literature sources for randomised controlled trials comparing semaglutide with placebo or other antidiabetic agents. Primary outcome was change from baseline in HbA1c . Secondary endpoints included change from baseline in body weight, blood pressure, heart rate, and incidence of hypoglycaemia, gastrointestinal adverse effects, pancreatitis and diabetic retinopathy...
May 13, 2018: Diabetes, Obesity & Metabolism
https://www.readbyqxmd.com/read/29752946/effect-of-free-amino-acids-on-bovine-retinal-pericytes
#18
S Vidhya, R Ramya, K Coral, K N Sulochana, S R Bharathidevi
AIM: This study was conducted to estimate the aminoacid levels in the vitreous of patients with proliferative diabetic retinopathy, and to correlate it with the adiponectin levels. Secondly to test if these amino acids can alter or induce adiponectin levels and its related factors in retinal cells like pericyte as an in vitro model. METHODS: All human studies were done as per declaration of Helsinki with institutional approval and after obtaining consent from participating individuals...
May 9, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29752167/dipeptidyl-peptidase-4-inhibitor-use-and-risk-of-diabetic-retinopathy-a-population-based-study
#19
N H Kim, J Choi, N H Kim, K M Choi, S H Baik, J Lee, S G Kim
AIMS: This study examined whether dipeptidyl peptidase (DPP)-4 inhibitor use is beneficial or harmful to diabetic retinopathy (DR) compared with other glucose-lowering agents in patients with type 2 diabetes (T2D). METHODS: From a population-based cohort provided by the National Health Insurance Service in Korea, 67,743 adults with T2D were identified as having been treated with oral glucose-lowering agents between 2008 and 2013. Matching (1:1) was performed for two groups comparing ever-use (cases) and never-use (controls) of DPP-4 inhibitors (n=14,522 in each group)...
March 27, 2018: Diabetes & Metabolism
https://www.readbyqxmd.com/read/29752166/circulating-matrix-modulators-mmp-9-and-timp-1-and-their-association-with-severity-of-diabetic-retinopathy
#20
Kuppuswami Jayashree, Md Yasir, Gandhipuram Periyasamy Senthilkumar, K Ramesh Babu, Vadivelan Mehalingam, Palani Selvam Mohanraj
AIMS: Diabetic Retinopathy (DR) is the leading cause of vision loss in the working age population. Matrix metalloproteinase-9 (MMP-9) and tissue inhibitor of metalloproteinase-1 (TIMP-1), are molecules involved in extracellular tissue matrix remodelling. They are implicated in the loss of retinal tissue integrity, a major cause of DR, that leads to retinal tissue degradation and apoptosis. This study is therefore, conducted to compare the serum levels of MMP-9 and TIMP-1 in T2DM patients without and with retinopathy, and to evaluate their association with the severity of DR...
May 5, 2018: Diabetes & Metabolic Syndrome
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