2,195 results match your criteria retinopathy pdr

A Cost Effectiveness Analysis of Intravitreal Aflibercept for the Prevention of Progressive Diabetic Retinopathy.

Ophthalmol Retina 2021 Sep 18. Epub 2021 Sep 18.

Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida. Electronic address:

Purpose: To calculate costs required to prevent center-involved diabetic macular edema (CI-DME) or proliferative diabetic retinopathy (PDR), and to improve the diabetic retinopathy severity score (DRSS) with intravitreal anti-VEGF injections as reported for aflibercept in two randomized control trials.

Design: Cost-effectiveness analysis modeling based on published data SUBJECTS: None METHODS: Results from PANORAMA and the Diabetic Retinopathy Clinical Research Network (DRCR.net) Protocol W were analyzed. Read More

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September 2021

Automated Grading of Diabetic Retinopathy with Ultra-Widefield Fluorescein Angiography and Deep Learning.

J Diabetes Res 2021 8;2021:2611250. Epub 2021 Sep 8.

Eye Center, Renmin Hospital of Wuhan University, Wuhan, China.

Purpose: The objective of this study was to establish diagnostic technology to automatically grade the severity of diabetic retinopathy (DR) according to the ischemic index and leakage index with ultra-widefield fluorescein angiography (UWFA) and the Early Treatment Diabetic Retinopathy Study (ETDRS) 7-standard field (7-SF).

Methods: This is a cross-sectional study. UWFA samples from 280 diabetic patients and 119 normal patients were used to train and test an artificial intelligence model to differentiate PDR and NPDR based on the ischemic index and leakage index with UWFA. Read More

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September 2021

ROCK1 Mediates Retinal Glial Cell Migration Promoted by Acrolein.

Front Med (Lausanne) 2021 3;8:717602. Epub 2021 Sep 3.

Laboratory of Ocular Cell Biology and Visual Science, Department of Ophthalmology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.

Acrolein is a highly reactive aldehyde that covalently binds to cellular macromolecules and subsequently modulates cellular function. Our previous study demonstrated that acrolein induces glial cell migration, a pathological hallmark of diabetic retinopathy; however, the detailed cellular mechanism remains unclear. The purpose of this study was to investigate the role of acrolein in retinal glial cell migration by focusing on rho-associated coiled-coil-containing protein kinases (ROCKs). Read More

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September 2021

Association between cystatin C and diabetic retinopathy among type 2 diabetic patients in China: a Meta-analysis.

Int J Ophthalmol 2021 18;14(9):1430-1440. Epub 2021 Sep 18.

Department of Medical Informatics, Medical School of Nantong University, Nantong 226001, Jiangsu Province, China.

Aim: To explore the correlation between cystatin C (Cys-C) and diabetic retinopathy (DR) in those patients with type 2 diabetes mellitus (DM) in China.

Methods: Articles were collected from China National Knowledge Infrastructure (CNKI), Wanfang, VIP, PubMed, EMBASE, Cochrane Library, Clinical Trials.gov, and Google Scholar. Read More

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September 2021

[Bradykinin and angiotensin-converting enzyme in serum of patients with diabetic retinopathy and the prognosis of diabetic macular edema development (pilot study)].

Probl Endokrinol (Mosk) 2021 Aug 19;67(4):13-19. Epub 2021 Aug 19.

Helmholtz National Medical center of Eye Diseases.

Background: Diabetic macular edema (DME) is a microvascular complication of diabetic retinopathy. One of the key roles in the pathogenesis of DME may belong to the components of rennin-angiotensin and kallikrein-kinin systems: bradykinin (Bk) and angiotensin-converting enzyme (ACE).

Purpose: To determine the Bk and ACE concentration and ACE activity in serum of patients with proliferative diabetic retinopathy (PDR) and to estimate the significance of these parameters for the early diagnostic and prognosis of DMO. Read More

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Animal models of diabetic retinopathy.

Ann Transl Med 2021 Aug;9(15):1272

Department of Ophthalmology and Visual Sciences, State University of New York (SUNY), Upstate Medical University, Syracuse, NY, USA.

The retina is the posterior neuro-integrated layer of the eye that conducts impulses induced by light to the optic nerve for human vision. Diseases of the retina often leads to diminished vision and in some cases blindness. Diabetes mellitus (DM) is a worldwide public health issue and globally, there is an estimated 463 million people that are affected by DM and its consequences. Read More

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Integrating SWATH-MS proteomics and transcriptome analysis to preliminarily identify three DEGs as biomarkers for proliferative diabetic retinopathy.

Proteomics Clin Appl 2021 Sep 16:e2100016. Epub 2021 Sep 16.

Department of Ophthalmology, Taizhou Municipal Hospital Affiliated with Taizhou University, Taizhou, 318000, China.

Purpose: We intended to preliminarily find differentially expressed proteins that play crucial roles in proliferative diabetic retinopathy (PDR), and lay the foundation for subsequent further research on the mechanism.

Experimental Design: Here, we developed a new strategy integrated the sequential windowed acquisition of all theoretical fragment ion (SWATH) mass spectra (MS) with multi-dataset joint analysis to screen for the PDR plasma biomarker. The annotation of the given gene list was performed with ClueGO function analysis. Read More

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September 2021

Triamcinolone acetonide modulates TGF‑β2‑induced angiogenic and tissue‑remodeling effects in cultured human retinal pigment epithelial cells.

Mol Med Rep 2021 11 15;24(5). Epub 2021 Sep 15.

Department of Medical Research, E‑Da Hospital, Kaohsiung 82445, Taiwan, R.O.C.

Transforming growth factor‑β2 (TGF‑β2) has been implicated in the pathogenesis of proliferative vitreoretinopathy (PVR) and proliferative diabetic retinopathy (PDR), due to its ability to stimulate the overproduction of pro‑angiogenic factors, such as vascular endothelial growth factor (VEGF), and remodeling of the extracellular matrix (ECM). Although intravitreal triamcinolone acetonide (TA) is clinically useful in the treatment of PVR and PDR, its molecular mechanism has yet to be fully elucidated. The present study investigated whether TA treatment altered TGF‑β2‑driven biological effects on the behavior of cultured human retinal pigment epithelial (RPE) cells, in order to determine which signaling pathway may be essential for the pharmacological action of TA. Read More

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November 2021

Relation of Maximum Lifetime Body Mass Index with Age at Hemodialysis Initiation and Vascular Complications in Japan.

Obes Facts 2021 Aug 13:1-9. Epub 2021 Aug 13.

Center of Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan.

Objective: The aim of this study was to investigate the association of the maximum lifetime body mass index (max BMI) with hemodialysis initiation and comorbidities in Japanese hemodialysis patients.

Methods: In a retrospective cross-sectional study on 724 hemodialysis patients, max BMI, age at hemodialysis initiation, and comorbidities including sleep apnea syndrome, cerebro-cardiovascular diseases, and proliferative diabetic retinopathy (PDR) were analyzed. Early hemodialysis initiation was defined as age <50 years. Read More

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Screening attendance, prevalence and severity of diabetic retinopathy (DR) in a cohort of patients with diabetes mellitus secondary to chronic pancreatitis (DMsCP) in Northern Ireland.

BMJ Open Diabetes Res Care 2021 Sep;9(1)

The Belfast Pancreatic Diabetes Clinic, Belfast City Hospital Health and Social Services Trust, Belfast, UK

Introduction: This study investigated Northern Ireland Diabetic Eye Screening Programme (NIDESP) attendance and diabetic retinopathy (DR) prevalence/severity in patients with diabetes mellitus secondary to chronic pancreatitis (PwDMsCP).

Research Design And Methods: Medical/NIDESP records for all PwDMsCP attending the pancreatic diabetes clinic were analyzed in 2017 (n=78) and 2019 (n=94).

Results: Between 2017 and 2019, those without DR decreased (76% to 63%); mild non-proliferative DR (NPDR), severe NPDR and PDR were found in 30%, 2% and 5%, respectively (previously 18%, 4%, 2%); diabetic maculopathy (DMac) was present in 12% (previously 10%). Read More

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September 2021

Macular Vascular Density Analysis Using Adobe Photoshop Software In Diabetic Eyes: Optical Coherence Tomography Angiography Study.

J Ayub Med Coll Abbottabad 2021 Jul-Sep;33(3):441-446

Department of Biotechnology and Genetic Engineering, University of Agriculture, Peshawar, Pakistan.

Background: Optical Coherence Tomography Angiography (OCTA) is dye less microvascular visualizing technique. In study we binaries OCTA images of macular vessels in healthy and diabetic subjects without macular oedema using Adobe Photoshop CS3 extended version.

Methods: Prospective, single centered, observational study total of 58 eyes of 108 Diabetic Retinopathy (DR) subjects and 20 eyes of 40 normal subjects with mean age of 58. Read More

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September 2021

Laser Therapy in the Treatment of Diabetic Retinopathy and Diabetic Macular Edema.

Curr Diab Rep 2021 Sep 6;21(9):35. Epub 2021 Sep 6.

Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, 1000 Wall Street, Ann Arbor, MI, 48105, USA.

Purpose Of Review: This review highlights indications and evidence on laser therapy in the management of diabetic retinopathy and diabetic macular edema. Particular focus is placed upon the benefits and limitations of conventional laser photocoagulation versus more modern laser photocoagulation techniques, as well as the role of laser photocoagulation in treatment of diabetic retinopathy and diabetic macular edema with the frequent utilization of pharmacologic, including anti-vascular endothelial growth factor (VEGF), therapy.

Recent Findings: Laser photocoagulation remains the gold-standard therapy for the effective, definitive treatment of PDR, and also is highly effective in the management of DME. Read More

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September 2021

Proteomics of Vitreous Humor Reveals PPARA, RXR, and LXR Are Possible Upstream Regulators of Proliferative Diabetic Retinopathy.

Front Med (Lausanne) 2021 17;8:724695. Epub 2021 Aug 17.

Department of Ophthalmology, Peking University People's Hospital, Eye Diseases and Optometry Institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing, China.

To investigate the key regulators of the disease by comparing the abundance of vitreous proteins between the patients with proliferative diabetic retinopathy (PDR) and the controls with idiopathic epiretinal membrane (iERM). Vitreous humor (VH) samples were derived from patients with PDR or iERM through the pars plana vitrectomy. The VH proteins were identified by liquid chromatography tandem mass spectrometry (LC-MS/MS) analysis. Read More

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Inhibition of CD146 attenuates retinal neovascularization via vascular endothelial growth factor receptor 2 signalling pathway in proliferative diabetic retinopathy.

Acta Ophthalmol 2021 Sep 3. Epub 2021 Sep 3.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.

Purpose: To investigate the expression of CD146 and its role in proliferative diabetic retinopathy (PDR).

Methods: Enzyme linked immunosorbent assay was performed to analyse the expression and relationship of sCD146, vascular endothelial growth factor (VEGF), sVEGFR1 and sVEGFR2 in vitreous specimens from PDR and idiopathic epiretinal membranes (IERM) or idiopathic macular hole patients. The location of CD146 in ERMs was detected by immunofluorescence. Read More

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September 2021

Incidence of Proliferative Diabetic Retinopathy and Other Neovascular Sequelae at 5 Years Following Diagnosis of Type 2 Diabetes.

Diabetes Care 2021 Sep 2. Epub 2021 Sep 2.

Roski Eye Institute, Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, CA

Objective: To determine the incidence and risk factors for developing proliferative diabetic retinopathy (PDR), tractional retinal detachment (TRD), and neovascular glaucoma (NVG) at 5 years after the initial diagnosis of type 2 diabetes.

Research Design And Methods: Insured patients aged ≥18 with newly diagnosed type 2 diabetes and 5 years of continuous enrollment were identified from a nationwide commercial claims database containing data from 2007 to 2015. The incidences of PDR, TRD, and NVG were computed at 5 years following the index diagnosis of type 2 diabetes. Read More

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September 2021

Diabetic retinopathy and visual impairment in a Norwegian diabetic coast population with a high dietary intake of fish oils. An observational study.

Acta Ophthalmol 2021 Sep 2. Epub 2021 Sep 2.

Centre for Clinical Research, Haukeland University Hospital, Bergen, Norway.

Purpose: To present retinal and visual findings in a Norwegian west coast diabetic population and to elucidate the effect of dietary intake of marine polyunsaturated fatty acids (PUFAs) on the development of diabetic retinopathy (DR).

Methods: In an eye practice in an archipelago of 314 km², serving a population of about 40 000, we recorded the prevalence of visual impairment and DR in a referred diabetic population. 510 consecutive patients were included, 238 females and 272 males. Read More

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September 2021

Alterations in choroidal vascular parameters following panretinal photocoagulation using enhanced-depth imaging optical coherence tomography in diabetic retinopathy.

Graefes Arch Clin Exp Ophthalmol 2021 Sep 1. Epub 2021 Sep 1.

Retina Service, Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Qazvin square, South Karegar Street, 1336616351, Tehran, Iran.

Purpose: To investigate the alteration of choroid in patients with very severe non-proliferative diabetic retinopathy (NPDR) or early proliferative diabetic retinopathy (PDR) following panretinal photocoagulation (PRP).

Methods: Thirty-nine eyes of 21 patients with very severe non-proliferative diabetic retinopathy (NPDR) (19 eyes) and early proliferative diabetic retinopathy (PDR) (20 eyes) were recruited. Enhanced-depth imaging optical coherence tomography at baseline, 1, and 6 months after PRP was employed to measure choroidal parameters including total choroidal area (TCA) and choroidal vascular index (CVI). Read More

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September 2021

Ocular surface temperature measurement in diabetic retinopathy.

Exp Eye Res 2021 Aug 28;211:108749. Epub 2021 Aug 28.

Indira Gandhi Centre for Atomic Research, Kalpakkam, India. Electronic address:

Infrared thermography provides functional imaging by picturing the temperature pattern of the region imaged. The temperature correlates to the blood flow pattern and is used in the diagnosis of diseases like breast cancer, peripheral vascular disorders, diabetic neuropathy and fever screening. In the present study, the usage of ocular thermography for diagnosis of diabetic retinopathy is explored. Read More

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Diabetes Promotes Retinal Vascular Endothelial Cell Injury by Inducing CCN1 Expression.

Front Cardiovasc Med 2021 11;8:689318. Epub 2021 Aug 11.

Department of Endocrinology and Metabolism, The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.

Diabetic retinopathy (DR) is one of the most common diabetic microvascular complications. However, the pathogenesis of DR has not yet been fully elucidated. This study aimed to discover novel and key molecules involved in the pathogenesis of DR, which could potentially be targets for therapeutic DR intervention. Read More

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Intravitreal Anti-Vascular Endothelial Growth Factor Agents for the Treatment of Diabetic Retinopathy: A Review of the Literature.

Pharmaceutics 2021 Jul 26;13(8). Epub 2021 Jul 26.

Division of Ophthalmology, Tel-Aviv Sourasky Medical Center, Tel Aviv-Yafo 6423906, Israel.

Diabetic retinopathy (DR) is the leading cause of blindness in the working-age population. The purpose of this review is to gather the existing literature regarding the use of the approved anti-vascular endothelial growth (anti-VEGF) agents in the treatment of DR. A comprehensive literature review in PubMed engine search was performed for articles written in English language up to 1 July 2021, using the keywords "diabetic retinopathy", "ranibizumab", "aflibercept", and "anti-VEGF". Read More

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Neovascularization Detection and Localization in Fundus Images Using Deep Learning.

Sensors (Basel) 2021 Aug 6;21(16). Epub 2021 Aug 6.

Department of Ophthalmology, School of Medical Sciences, Health Campus, Universiti Sains Malaysia, Kubang Kerian 16150, Malaysia.

Proliferative Diabetic Retinopathy (PDR) is a severe retinal disease that threatens diabetic patients. It is characterized by neovascularization in the retina and the optic disk. PDR clinical features contain highly intense retinal neovascularization and fibrous spreads, leading to visual distortion if not controlled. Read More

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Serum Exosomal Circular RNA Expression Profile and Regulative Role in Proliferative Diabetic Retinopathy.

Front Genet 2021 10;12:719312. Epub 2021 Aug 10.

Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.

Background: Proliferative diabetic retinopathy (PDR), as one of the main microvascular complications of diabetes mellitus, seriously threatens the visual function of the working-age population; yet, the underlying pathogenesis is still poorly understood. This study aimed to identify the distinct exosomal circular RNA (circRNA) expression in PDR serum and preliminarily explore the potential pro-angiogenic mechanism of specific exosomal circRNAs.

Methods: We collected serum samples from 10 patients with PDR and 10 patients with age-matched senile cataract to detect the exosomal differentially expressed genes (DEGs) of circRNAs high-throughput sequencing, followed by validation with quantitative real-time PCR (qRT-PCR). Read More

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Largazole Inhibits Ocular Angiogenesis by Modulating the Expression of VEGFR2 and p21.

Mar Drugs 2021 Aug 22;19(8). Epub 2021 Aug 22.

Centre for Vision Research, Duke NUS Medical School, 8 College Road, Singapore 169857, Singapore.

Ocular angiogenic diseases, characterized by abnormal blood vessel formation in the eye, are the leading cause of blindness. Although Anti-VEGF therapy is the first-line treatment in the market, a substantial number of patients are refractory to it or may develop resistance over time. As uncontrolled proliferation of vascular endothelial cells is one of the characteristic features of pathological neovascularization, we aimed to investigate the role of the class I histone deacetylase (HDAC) inhibitor Largazole, a cyclodepsipeptide from a marine cyanobacterium, in ocular angiogenesis. Read More

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Relationship between elevated microRNAs and growth factors levels in the vitreous of patients with proliferative diabetic retinopathy.

J Diabetes Complications 2021 Aug 14:108021. Epub 2021 Aug 14.

Department of Ophthalmology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China. Electronic address:

Aim: The aim of this study was to identify differentially expressed microRNAs (miRNAs) in the vitreous of patients with proliferative diabetic retinopathy (PDR) and correlate some of them with growth factors.

Methods: Vitreous samples were collected from 5 PDR eyes and 5 control eyes, and then miRNAs were assayed with next-generation sequencing (NGS). Three differentially expressed miRNAs were validated in vitreous of another cohort using reverse transcriptase quantitative polymerase chain reaction (RT-qPCR). Read More

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Prevention of vision-threatening complications in diabetic retinopathy: two perspectives based on results from the DRCR Retina Network Protocol W and the Regeneron-sponsored PANORAMA.

Curr Opin Ophthalmol 2021 Aug 20. Epub 2021 Aug 20.

Retina Division, Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Retina Division, Department of Ophthalmology, Chiang Mai University, Chiang Mai, Thailand.

Purpose Of Review: The use of intravitreous antivascular endothelial growth factor to prevent center-involved diabetic macular edema (CI-DME) with vision loss and proliferative diabetic retinopathy (PDR) has been investigated and recently reported in two randomized clinical trials. Although both trials showed substantial superiority of aflibercept at preventing the development of vision-threatening complications (VTCs) of CI-DME or PDR compared with sham at 1 or 2 years, without a concomitant benefit in visual acuity outcomes, the interpretation of the results and its application to clinical practice resulted in two disparate opinions. In this review, we discuss these two trials including their similarities and differences, other relevant studies, and considerations regarding the interpretation and the application of these results into clinical practice. Read More

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[Viscodissection with staining of epiretinal membranes in surgery of proliferative diabetic retinopathy].

Vestn Oftalmol 2021 ;137(4):18-23

Research Institute of Eye Diseases, Moscow, Russia.

Purpose: To develop a method of viscodissection involving staining of epiretinal membranes, and to evaluate its efficacy and safety in surgical treatment of proliferative diabetic retinopathy (PDR).

Material And Methods: The study included 30 patients with type 1 diabetes mellitus and PDR with tractional retinal detachment (TRD). All patients were divided into two groups. Read More

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Effect of pattern scanning laser on macular thickness in diabetic retinopathy.

Ther Adv Ophthalmol 2021 Jan-Dec;13:25158414211035860. Epub 2021 Aug 12.

Associate Professor, Department of Ophthalmology, College of Medicine , University of Florida, 1600, SW Archer Road, Gainesville FL, 32610, USA.

Purpose: This study investigates the effect of pattern scanning laser (PASCAL) panretinal photocoagulation (PRP) on central macular thickness (CMT) and visual acuity (VA) in patients with proliferative diabetic retinopathy (PDR).

Methods: This retrospective non-randomized comparative case series included 262 eyes (163 with macular edema) of 177 patients with PDR. Treatment was PRP alone (137), PRP + anti-vascular endothelial growth factor (VEGF) (69), PRP + focal laser (28), or all three (89). Read More

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White Matter Hyperintensities of Bilateral Lenticular Putamen in Patients with Proliferative Diabetic Retinopathy: A Voxel-based Morphometric Study.

Diabetes Metab Syndr Obes 2021 12;14:3653-3665. Epub 2021 Aug 12.

Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Ocular Disease Clinical Research Center, Nanchang, Jiangxi, 330006, People's Republic of China.

Objective: To explore the changes in gray matter volume (GMV) and white matter volume (WMV) in proliferative diabetic retinopathy (PDR) patients using voxel-based morphometry (VBM).

Participants And Methods: In total, 15 patients (10 males, 5 females) with PDR were enrolled to the patient group and 15 healthy controls (10 males, 5 females) to the control group, matched for age, sex, handedness, and education status. All individuals underwent voxel-based morphometry scans. Read More

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[The value of serum cystatin C for the evaluation of renal function damage in patients with proliferative diabetic retinopathy].

Zhonghua Yi Xue Za Zhi 2021 Aug;101(30):2400-2404

Department of Laboratory Medicine, Beijing Tongren hospital, Capital Medical University, Beijing 100730, China.

To investigate the value of serum cystatin C for the evaluation of renal function damage in patients with proliferative diabetic retinopathy (PDR). The clinical data of PDR patients treated in ophthalmic wards of Beijing Tongren Hospital from July 2019 to January 2021 were retrospectively analyzed. The estimated glomerular filtration rate (eGFR) was calculated by the abbreviated Modification of Diet in Renal Disease (MDRD) study equation. Read More

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Outcomes of a novel bubble ultra-wide field viewing system for vitreoretinal surgery.

Acta Ophthalmol 2021 Aug 17. Epub 2021 Aug 17.

Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou, China.

Purpose: To report the clinical outcomes and evaluate the efficacy of a novel bubble ultra-wide field viewing system for vitreoretinal surgery.

Design: Prospective, noncomparative, interventional case series.

Participants: One hundred and fifty-one eyes of 146 consecutive patients with proliferative diabetic retinopathy (PDR), vitreous haemorrhage originating from retinal vein occlusion (VH-RVO), epiretinal membrane (EM), macular hole (MH) or retinal detachment (RD) who underwent vitreoretinal surgery using the bubble ultra-wide field viewing system were included. Read More

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