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Diabetes,diabetic retinopathy

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https://www.readbyqxmd.com/read/28211261/early-microvascular-retinal-changes-in-optical-coherence-tomography-angiography-in-patients-with-type-1-diabetes-mellitus
#1
Joseph M Simonett, Fabio Scarinci, Fabiana Picconi, Paola Giorno, Daniele De Geronimo, Antonio Di Renzo, Monica Varano, Simona Frontoni, Mariacristina Parravano
PURPOSE: Diabetic retinopathy (DR) can lead to significant vision loss and blindness and has a particularly high prevalence in patients with type 1 diabetes (DM1). In this study, we investigate quantitative differences in optical coherence tomography angiography (OCTA) data between DM1 patients with no or mild signs of retinopathy and non-diabetic subjects. METHODS: Optical coherence tomography angiography (OCTA) imaging was performed on DM1 patients with no or mild nonproliferative diabetic retinopathy and healthy, age-matched controls...
February 16, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28210901/transplantation-of-lineage-negative-stem-cells-in-pterygopalatine-artery-ligation-induced-retinal-ischemia-reperfusion-injury-in-mice
#2
Gillipsie Minhas, Sudesh Prabhakar, Ryuichi Morishita, Munehisa Shimamura, Reema Bansal, Akshay Anand
Retinal ischemia is a condition associated with retinal degenerative diseases such as glaucoma, diabetic retinopathy, and other optic neuropathies, leading to visual impairment and blindness worldwide. Currently, there is no therapy available for ischemic retinopathies. Therefore, the aim of this study was to test a murine model of pterygopalatine artery ligation-induced retinal injury for transplantation of mouse bone marrow-derived lineage-negative (lin-ve) stem cells. The mouse external carotid artery and pterygopalatine artery were ligated for 3...
February 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28210739/retinal-oxidative-stress-at-the-onset-of-diabetes-determined-by-synchrotron-ftir-widefield-imaging-towards-diabetes-pathogenesis
#3
Ebrahim Aboualizadeh, Mahsa Ranji, Christine M Sorenson, Reyhaneh Sepehr, Nader Sheibani, Carol J Hirschmugl
Diabetic retinopathy is a microvascular complication of diabetes that can lead to blindness. In the present study, we aimed to determine the nature of diabetes-induced, highly localized biochemical changes in the neuroretina at the onset of diabetes. High-resolution synchrotron Fourier transform infrared (s-FTIR) wide field microscopy coupled with multivariate analysis (PCA-LDA) was employed to identify biomarkers of diabetic retinopathy with spatial resolution at the cellular level. We compared the retinal tissue prepared from 6-week-old Ins2(Akita/+) heterozygous (Akita/+, N = 6; a model of diabetes) male mice with the wild-type (control, N = 6) mice...
February 17, 2017: Analyst
https://www.readbyqxmd.com/read/28210097/epac1-agonist-decreased-inflammatory-proteins-in-retinal-endothelial-cells-and-loss-of-epac1-increased-inflammatory-proteins-in-the-retinal-vasculature-of-mice
#4
Li Liu, Youde Jiang, Adam Chahine, Elizabeth Curtiss, Jena J Steinle
PURPOSE: Increased inflammatory mediator levels are reported in diabetic retinopathy. We previously reported that β-adrenergic receptor agonists reduced inflammatory mediators in the diabetic retina; however, these agents cannot be given systemically. Here, we investigated whether Epac1 is key to the protective effects of β-adrenergic receptor agonists. METHODS: We cultured primary human retinal endothelial cells (RECs) in normal (5 mM) or high (25 mM) glucose and treated them with an Epac1-specific agonist...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28208752/meta-analysis-on-the-association-of-aldh2-polymorphisms-and-type-2-diabetic-mellitus-diabetic-retinopathy
#5
Guang-Yi Li, Zi-Bo Li, Fang Li, Li-Ping Dong, Liang Tang, Ju Xiang, Jian-Ming Li, Mei-Hua Bao
Type 2 diabetic mellitus (T2DM) is a disease with high prevalence and a major cause for death worldwide. Diabetic retinopathy (DR) is one of the major manifestation of diabetes. Aldehyde dehydrogenease 2 (ALDH2) detoxifies aldehyde produced during ethanol metabolism and oxidative stress. It has been found that the polymorphism in ALDH2 rs671 is probably associated with the risk of T2DM and DR. However, a lot of inconsistency and controversy still exists. In order to get a more precise and comprehensive estimation for the association between ALDH2 polymorphism with the risk of T2DM and DR, we conducted the present meta-analysis...
February 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208170/optical-coherence-tomographic-angiography-in-type-2-diabetes-and-diabetic-retinopathy
#6
Daniel Shu Wei Ting, Gavin Siew Wei Tan, Rupesh Agrawal, Yasuo Yanagi, Nicole Ming Sie, Chee Wai Wong, Ian Yew San Yeo, Shu Yen Lee, Chui Ming Gemmy Cheung, Tien Yin Wong
Importance: Optical coherence tomographic angiography (OCT-A) is able to visualize retinal microvasculature without the need for injection of fluorescein contrast dye. Nevertheless, it is only able to capture a limited view of macula and does not show leakage. Objectives: To evaluate the retinal microvasculature using OCT-A in patients with type 2 diabetes as well as the association of OCT-A characteristics with diabetic retinopathy (DR) and systemic risk factors...
February 16, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28207728/discharge-outcomes-of-patients-referred-to-specialist-eye-clinic-from-diabetic-retinopathy-screening-in-northland-2014-15
#7
Pragnya Jagadish, David Dalziel
AIMS: To determine the discharge outcomes of patients seen in specialist eye clinic after referral from diabetic retinopathy screening (DRS). METHODS: Retrospective analysis of outcomes of a sample of 98 patients referred from DRS to specialist eye clinic. RESULTS: A sample of 98 patients were analysed following referral by DRS to specialist eye clinic from 16/4/14 to 16/4/15. Age at screening ranged from 13-88 years, with the main ethnic groups being Māori (57...
February 17, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28207727/prevalence-of-diabetic-retinopathy-at-first-presentation-to-the-retinal-screening-service-in-the-greater-wellington-region-of-new-zealand-2006-2015-and-implications-for-models-of-retinal-screening
#8
Lily Yl Chang, Arier C Lee, Wilson Sue
AIM: To describe the prevalence of diabetic retinopathy (DR) in patients at first presentation for diabetic retinal screening in the greater Wellington region with the intent of service evaluation. METHODS: This is a retrospective study using data collected from patients newly referred for diabetic retinal screening between 2006-2015 (prevalence analysis, n=12667). The prevalence of DR was calculated by gender, ethnicity, age, type of diabetes and glycaemic control (HbA1c)...
February 17, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28207726/long-term-survival-following-diabetic-vitrectomy
#9
Bia Z Kim, Kuo-Luong Lee, Stephen J Guest, David Worsley
AIM: To update long-term survival data on patients with proliferative diabetic retinopathy undergoing vitrectomy and to identify associated risk factors. METHODS: Retrospective clinical record review at a single New Zealand tertiary referral centre. A total of 182 eyes that underwent a vitrectomy for a diabetic vitreous haemorrhage and/or tractional retinal detachment between March 2000 and December 2010 were included. Kaplan-Meier survival curves and Cox-regression analyses were performed for survival rates and associated risk factors...
February 17, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28207608/effects-of-internal-limiting-membrane-peeling-combined-with-removal-of-idiopathic-epiretinal-membrane-a-systematic-review-of-literature-and-meta-analysis
#10
Kunihiro Azuma, Takashi Ueta, Shuichiro Eguchi, Makoto Aihara
PURPOSE: To evaluate the effects on postoperative prognosis of internal limiting membrane (ILM) peeling in conjunction with removal of idiopathic epiretinal membranes (ERMs). METHODS: MEDLINE, Cochrane Central Register of Controlled Trials (CENTRAL), and EMBASE were systematically searched for studies that compared ILM peeling with no ILM peeling in surgery to remove idiopathic ERM. Outcome measures were best-corrected visual acuity, central macular thickness, and ERM recurrence...
February 15, 2017: Retina
https://www.readbyqxmd.com/read/28203186/real-life-iluvien-fluocinolone-acetonide-case-study-rapid-drying-of-the-macula-and-improved-vision-within-2-years-after-therapy-initiation
#11
Hibba Quhill, Fahd Quhill
IMPORTANCE: A case showing sustained structural and functional responses 2 years after a single treatment with ILUVIEN (0.2 µg/day fluocinolone acetonide, FAc) despite suboptimal responses to ranibizumab. OBSERVATIONS: A 68-year-old female patient with diabetic macular oedema (DME) from type 2 diabetes mellitus was first diagnosed in October 2010 and had a baseline visual acuity (VA) of 46 Early Treatment Diabetic Retinopathy Study (ETDRS) letters in the left eye...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28202017/association-between-metformin-use-and-below-the-knee-arterial-calcification-score-in-type-2-diabetic-patients
#12
Aurélien Mary, Agnes Hartemann, Sophie Liabeuf, Carole Elodie Aubert, Salim Kemel, Joe Elie Salem, Philippe Cluzel, Aurélie Lenglet, Ziad A Massy, Jean-Daniel Lalau, Romuald Mentaverri, Olivier Bourron, Saïd Kamel
BACKGROUND: Vascular calcification (VC) is common in type 2 diabetes, and is associated with cardiovascular complications. Recent preclinical data suggest that metformin inhibits VC both in vitro and in animal models. However, metformin's effects in patients with diabetic VC have not previously been characterized. The present study investigated the association between metformin use and lower-limb arterial calcification in patients with type 2 diabetes and high cardiovascular risk. METHODS: The DIACART cross-sectional cohort study included 198 patients with type 2 diabetes but without severe chronic kidney disease...
February 15, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28199833/fgf21-administration-suppresses-retinal-and-choroidal-neovascularization-in-mice
#13
Zhongjie Fu, Yan Gong, Raffael Liegl, Zhongxiao Wang, Chi-Hsiu Liu, Steven S Meng, Samuel B Burnim, Nicholas J Saba, Thomas W Fredrick, Peyton C Morss, Ann Hellstrom, Saswata Talukdar, Lois E H Smith
Pathological neovascularization, a leading cause of blindness, is seen in retinopathy of prematurity, diabetic retinopathy, and age-related macular degeneration. Using a mouse model of hypoxia-driven retinal neovascularization, we find that fibroblast growth factor 21 (FGF21) administration suppresses, and FGF21 deficiency worsens, retinal neovessel growth. The protective effect of FGF21 against neovessel growth was abolished in adiponectin (APN)-deficient mice. FGF21 administration also decreased neovascular lesions in two models of neovascular age-related macular degeneration: very-low-density lipoprotein-receptor-deficient mice with retinal angiomatous proliferation and laser-induced choroidal neovascularization...
February 14, 2017: Cell Reports
https://www.readbyqxmd.com/read/28196198/en-face-doppler-optical-coherence-tomography-measurement-of-total-retinal-blood-flow-in-diabetic-retinopathy-and-diabetic-macular-edema
#14
ByungKun Lee, Eduardo A Novais, Nadia K Waheed, Mehreen Adhi, Talisa E de Carlo, Emily D Cole, Eric M Moult, WooJhon Choi, Mark Lane, Caroline R Baumal, Jay S Duker, James G Fujimoto
Importance: Alterations in ocular blood flow play an important role in the pathogenesis and progression of diabetic retinopathy (DR). However, the measurement of retinal blood flow in clinical studies has been challenging. En face Doppler optical coherence tomography (OCT) provides an effective method for measuring total retinal blood flow (TRBF) in the clinic. Objective: To investigate TRBF in eyes with DR of varying severity, with or without diabetic macular edema (DME), using en face Doppler OCT...
February 9, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28196059/quantification-of-intraretinal-hard-exudates-in-eyes-with-diabetic-retinopathy-by-optical-coherence-tomography
#15
Sowmya Srinivas, Muneeswar G Nittala, Amirhossein Hariri, Maximilian Pfau, Julie Gasperini, Michael Ip, SriniVas R Sadda
PURPOSE: To evaluate the reproducibility of intraretinal hard exudate (HE) quantification from spectral domain optical coherence tomography (SD-OCT) images of eyes with diabetic retinopathy (DR). METHODS: Cases with diabetic macular edema were enrolled. The area of HE obtained by B-scan segmentation was compared with the area obtained by en face segmentation. RESULTS: The mean ± SD for the HE area was 1.78 ± 1.37 mm with B-scan segmentation and 0...
February 10, 2017: Retina
https://www.readbyqxmd.com/read/28196056/effect-of-an-intravitreal-dexamethasone-implant-on-diabetic-macular-edema-after-cataract-surgery
#16
Pilar Calvo, Antonio Ferreras, Fadwa Al Adel, Wantanee Dangboon, Michael H Brent
PURPOSE: To analyze the effects of a dexamethasone intravitreal implant (DEX; Ozurdex 700 μg; Allergan) administered immediately after cataract surgery in diabetic patients. METHODS: This prospective, single-arm, open label study (NCT01748487 at ClinicalTrials.gov) involved Type 2 diabetic patients with at least mild diabetic retinopathy (DR) who underwent cataract surgery and DEX insertion after phacoemulsification, and intraocular lens implantation were enrolled...
February 10, 2017: Retina
https://www.readbyqxmd.com/read/28196055/spontaneous-rupture-and-involution-of-a-macro-microaneurysm-in-diabetic-retinopathy
#17
Fatimah Gilani, Orly Gal-Or, K Bailey Freund
No abstract text is available yet for this article.
February 10, 2017: Retina
https://www.readbyqxmd.com/read/28196053/choroidal-thickness-in-diabetic-retinopathy-assessed-with-swept-source-optical-coherence-tomography
#18
Inês Laíns, Katherine E Talcott, Ana R Santos, João H Marques, Pedro Gil, João Gil, João Figueira, Deeba Husain, Ivana K Kim, Joan W Miller, Rufino Silva, John B Miller
PURPOSE: To compare the choroidal thickness (CT) of diabetic eyes (different stages of disease) with controls, using swept-source optical coherence tomography. METHODS: A multicenter, prospective, cross-sectional study of diabetic and nondiabetic subjects using swept-source optical coherence tomography imaging. Choroidal thickness maps, according to the nine Early Treatment Diabetic Retinopathy Study (ETDRS) subfields, were obtained using automated software. Mean CT was calculated as the mean value within the ETDRS grid, and central CT as the mean in the central 1 mm...
February 10, 2017: Retina
https://www.readbyqxmd.com/read/28195619/efficacy-of-the-intravitreal-sustained-release-dexamethasone-implant-for-diabetic-macular-edema-refractory-to-anti-vascular-endothelial-growth-factor-therapy-meta-analysis-and-clinical-implications
#19
Zainab Khan, Robin K Kuriakose, Maryam Khan, Eric K Chin, David R P Almeida
BACKGROUND AND OBJECTIVE: To assess the effect on best-corrected visual acuity (BCVA) and efficacy of the intravitreal sustained-release 0.7 mg dexamethasone implant (Ozurdex; Allergan, Irvine, CA) in patients with recalcitrant diabetic macular edema (DME). PATIENTS AND METHODS: Meta-analysis utilizing the MOOSE framework and a random effects model. Studies included adults undergoing treatment with Ozurdex for DME. The methodologic quality of each study was assessed using the MINORS and the Cochrane Collaboration Risk of Bias for randomized studies...
February 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28194551/changes-in-choroidal-thickness-in-patients-with-diabetic-retinopathy
#20
Zaigen Ohara, Hitoshi Tabuchi, Shunsuke Nakakura, Yuki Yoshizumi, Hitomi Sumino, Yukiko Maeda, Yoshiaki Kiuchi
PURPOSE: To investigate the changes in choroidal thickness (ChT) following panretinal photocoagulation (PRP) for diabetic retinopathy (DR) and compare ChT in relation to DR severity. METHODS: Thirty-two eyes [19 eyes with proliferative DR (PDR) and 13 eyes with severe nonproliferative DR (NPDR)] for which PRP was necessary were analyzed. ChT was measured before PRP and at 1, 3, and 6 months after PRP using the swept-source optical coherence tomography. ChT of the 61 eyes matched with the PDR patients for the mean age and axial length was also measured and statistically compared in relation to severity...
February 13, 2017: International Ophthalmology
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