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Proliferative vitreoretinopathy

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https://www.readbyqxmd.com/read/28101042/use-of-internal-limiting-membrane-autograft-in-primary-vitrectomy-for-rhegmatogenous-retinal-detachment
#1
Sergio Eustolio Hernández-Da Mota, Jorge Francisco Béjar-Cornejo
During a pars plana vitrectomy, an unplanned retinotomy in the raphe was performed in a 55-year-old female patient with rhegmatogenous retinal detachment and proliferative vitreoretinopathy. Since diathermy and laser therapy were not available at that moment, it was decided to peel off a small graft of the internal limiting membrane adjacent to the retinotomy site which had been previously stained with Brilliant Blue G. The graft was displaced under perfluorocarbon fluids and placed inside the retinotomy. Three weeks after surgery, the apparent closure of the retinotomy was observed clinically...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28088932/trauma-of-the-globe-state-of-art-in-global-and-in-china
#2
Zhuo Chen, Shi-Ming Li
Current states of traumatic eye injury are reviewed in terms of epidemiology in the developing countries and developed countries, causes of the trauma, eye injury types, traumatic eye injury diagnostic methods and treatments. Trauma-caused vision-threatening conditions such as open global injury, traumatic optic neuropathy and proliferative vitreoretinopathy are particularly discussed. Also the most updated clinic research in China as Eye Injury Vitrectomy Study is discussed. At the end, the current achievements and research in traumatic eye injury in the world are summerized...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28077370/preoperative-aqueous-humour-flare-values-do-not-predict-proliferative-vitreoretinopathy-in-patients-with-rhegmatogenous-retinal-detachment
#3
Verena C Mulder, Jan Tode, Elon Hc van Dijk, Konstantine Purtskhvanidze, Johann Roider, Jan C van Meurs, Felix Treumer
BACKGROUND/AIMS: Patients with rhegmatogenous retinal detachment (RRD) who develop postoperative proliferative vitreoretinopathy (PVR) have been found to have higher preoperative laser flare values than patients with RRD who do not develop this complication. Measurement of laser flare has therefore been proposed as an objective, rapid and non-invasive method for identifying high-risk patients. The purpose of our study was to validate the use of preoperative flare values as a predictor of PVR risk in two additional patient cohorts, and to confirm the sensitivity and specificity of this method for identifying high-risk patients...
January 11, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28057646/incidence-mechanism-and-outcomes-of-schisis-retinal-detachments-revealed-through-a-prospective-population-based-study
#4
Kanmin Xue, Mahiul M K Muqit, Eric Ezra, Stephen J Charles, David Yorston, Arijit Mitra, Chetan K Patel
AIM: To determine the incidence, presentation and outcomes of progressive sight-threatening retinal detachment (RD) complicating degenerative retinoschisis. METHODS: We conducted the first prospective population-based epidemiological study of progressive schisis detachment over a 1-year period (2014-2015) in the UK. Case ascertainment was via monthly British Ophthalmological Surveillance Unit reporting cards sent to all ophthalmologists in the UK. For each reported case, data were collected using incident and 6 months follow-up questionnaires gathering information including demographic, presenting symptoms, retinal findings, primary management, primary outcome, secondary management and secondary outcome...
January 5, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28053500/comparison-of-outcomes-scleral-buckling-and-pars-plana-vitrectomy-versus-vitrectomy-alone-for-primary-repair-of-rhegmatogenous-retinal-detachment
#5
Luke B Lindsell, Robert A Sisk, Daniel M Miller, Robert E Foster, Michael R Petersen, Christopher D Riemann, Robert K Hutchins
OBJECTIVE: To assess the combination of scleral buckling (SB) and pars plana vitrectomy (PPV) versus PPV alone in the primary repair of rhegmatogenous retinal detachments (RRDs). METHODS: The current study was a retrospective, comparative, interventional, consecutive case series of 179 eyes of 174 patients who underwent primary RRD repair by five surgeons between January 1, 2008 and December 31, 2010, utilizing SB with PPV or PPV. Univariate and multivariate analyses were used to compare the efficacy of the two surgical strategies and assess for risk factors of proliferative vitreoretinopathy (PVR)...
2017: Clinical Ophthalmology
https://www.readbyqxmd.com/read/28045788/staining-assisted-removal-of-silicone-oil-for-the-identification-of-subclinical-proliferative-vitreoretinopathy
#6
Stanislao Rizzo, Francesco Barca, Francesco Faraldi, Tomasso Caporossi, Gianni Virgili
PURPOSE: Retinal detachment is a frequent complication after removal of silicone oil (ROSO). A retrospective study was conducted to determine whether staining-assisted removal of silicone oil (st-ROSO) allowed better identification and removal of proliferative vitreoretinopathy (PVR) processes compared with a conventional removal of silicone oil technique. METHODS: All individuals underwent pars plana vitrectomy (PPV) and silicone oil fill-in for complicated retinal detachments...
December 30, 2016: Retina
https://www.readbyqxmd.com/read/28033232/choroidal-thickness-changes-after-vitrectomy-with-silicone-oil-tamponade-for-proliferative-vitreoretinopathy-retinal-detachment
#7
Dominik Odrobina, Joanna Gołębiewska, Iwona Maroszyńska
PURPOSE: To access the potential effect of vitrectomy and silicone oil tamponade on the choroid. METHODS: Eighteen patients (18 eyes) who had undergone pars plana vitrectomy with 1,000-cSt silicone oil tamponade for proliferative vitreoretinopathy retinal detachment were included in this retrospective study. All patients underwent ophthalmologic examinations before treatment and 1 week and 1, 3, and 6 months after vitrectomy with silicone oil tamponade. Choroidal thickness was measured using enhanced depth imaging optical coherence tomography (Spectralis; Heidelberg Engineering) in a horizontal and vertical section beneath the fovea...
December 28, 2016: Retina
https://www.readbyqxmd.com/read/28002564/subretinal-fluid-levels-of-signal-transduction-proteins-and-apoptosis-molecules-in-macula-off-retinal-detachment-undergoing-scleral-buckle-surgery
#8
Paolo Carpineto, Agbeanda Aharrh-Gnama, Vincenzo Ciciarelli, Enrico Borrelli, Francesco Petti, Raffaella Aloia, Alessia Lamolinara, Marta Di Nicola, Leonardo Mastropasqua
Purpose: To evaluate signal transduction and early apoptosis protein levels in subretinal fluid collected during scleral buckling surgery for macula-off rhegmatogenous retinal detachment (RRD). Our aim was to assess both their relation with RRD features and their influence on the posttreatment outcome. Methods: Thirty-three eyes of 33 RRD patients scheduled for scleral buckle surgery were enrolled in the study. Undiluted subretinal fluid samples were collected during surgery and analyzed via magnetic bead-based immunoassay...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27999681/timing-and-outcomes-of-vitreoretinal-surgery-after-traumatic-retinal-detachment
#9
REVIEW
Molly Orban, Yasmin Florence Khodeja Islam, Luis J Haddock
Traumatic retinal detachments are a significant cause of morbidity. There are currently no evidence-based guidelines on the appropriate time to perform vitreoretinal surgery to repair a traumatic retinal detachment. Early intervention, within seven days of the inciting trauma, may decrease proliferative vitreoretinopathy and postoperative endophthalmitis. Later intervention may yield a reduced risk of inflammation and hemorrhage, particularly in cases of concomitant open globe injuries. This article reviews the literature on the management of retinal detachments associated with ocular trauma from the years 2006 to 2016...
2016: Journal of Ophthalmology
https://www.readbyqxmd.com/read/27938367/anatomical-success-rate-of-pars-plana-vitrectomy-for-treatment-of-complex-rhegmatogenous-retinal-detachment
#10
Xhevat Lumi, Zala Lužnik, Goran Petrovski, Beáta Éva Petrovski, Marko Hawlina
BACKGROUND: Pars plana vitrectomy (PPV) is preferred surgical procedure for the management of complex rhegmatogenous retinal detachment (RRD). The purpose of this study was to evaluate the anatomical results of primary PPV for the treatment of primary complex RRD and to determine the influence of lens status, tamponading agent, preoperative proliferative vitreoretinopathy (PVR) and axial length (AL) of the eye upon the anatomical outcome. METHODS: A retrospective consecutive chart analysis was performed on 117 eyes from 117 patients with complex RRD managed with PPV...
December 9, 2016: BMC Ophthalmology
https://www.readbyqxmd.com/read/27936052/microrna-182-suppresses-hgf-sf-induced-increases-in-retinal-pigment-epithelial-cell-proliferation-and-migration-through-targeting-c-met
#11
Lihua Wang, Feng Dong, Peter S Reinach, Dandan He, Xiaoting Zhao, Xiaoyan Chen, Dan-Ning Hu, Dongsheng Yan
As increases in hepatocyte growth factor/scatter factor (HGF/SF) induce retinal pigment epithelial (RPE) migration and proliferation into the vitreous cavity and contribute to proliferative vitreoretinopathy (PVR) development, we determined if changes in miR-182 expression affect such behavioral changes. We found that miR-182 expression was less in PVR clinical samples than in primary RPE cells whereas c-Met was upregulated. Ectopic miR-182 inhibited RPE cell proliferation, cell cycle, and migration. Bioinformatic analysis identified c-Met as a miR-182 target, which was confirmed with the luciferase reporter assay...
2016: PloS One
https://www.readbyqxmd.com/read/27930977/eupatilin-prevents-h2o2-induced-oxidative-stress-and-apoptosis-in-human-retinal-pigment-epithelial-cells
#12
Lei Du, Jia Chen, Yi-Qiao Xing
Eupatilin, a pharmacologically active flavone derived from the Artemisia plant species, is known to possess anti-oxidant activity. However, the effects of eupatilin on oxidative stress-induced retinal damage in retinal pigment epithelium (RPE) cells and the potential mechanisms involved have not been explored. Therefore, the aim of this study was to investigate the effects of eupatilin on oxidative stress-induced retinal damage in RPE cells. Our results showed that eupatilin significantly attenuated H2O2-induced cell injury and ROS production in ARPE-19 cells...
January 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27926755/surface-area-of-detachment-proliferative-vitreoretinopathy-and-pulse-pressure-but-not-ages-are-associated-with-retinal-redetachment
#13
Bernardina T Fokkens, Douwe J Mulder, Michiel B Nugteren, Casper G Schalkwijk, Jean L Scheijen, Andries J Smit, Leonoor I Los
Purpose: Advanced glycation endproducts (AGEs) have been suggested to play a role in retinal redetachment by promoting proliferative vitreoretinopathy (PVR). The purpose of this study was to investigate whether AGEs, in combination with other clinical characteristics, were able to identify patients at high risk for redetachment after vitrectomy for rhegmatogenous retinal detachment (RRD). Methods: In this prospective cohort study, 410 RRD patients were included...
December 1, 2016: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/27919568/all-trans-retinoic-acid-suppresses-the-adhering-ability-of-arpe-19-cells-via-mitogen-activated-protein-kinase-and-focal-adhesion-kinase
#14
Yo-Chen Chang, Yuh-Shin Chang, Ming-Chu Hsieh, Horng-Jiun Wu, Meng-Hsien Wu, Chia-Wei Lin, Wen-Chuan Wu, Ying-Hsien Kao
This study investigated the signaling mechanism underlying the anti-adhesive effect of all-trans retinoic acid (ATRA) on retinal pigment epithelial ARPE-19 cells. Adhesion kinetics with or without ATRA treatment were profiled by adhesion assay. Surface coating with type IV collagen, fibronectin, laminin, but not type I collagen, significantly enhanced adhesion and spreading of ARPE-19 cells, while ATRA at subtoxic doses (ranging from 10(-7) to 10(-6) M) profoundly suppressed the extracellular matrix-enhanced adhesion ability...
December 2016: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/27849448/myeloid-related-protein-14-mrp-14-s100a9-calgranulin-b-is-associated-with-inflammation-in-proliferative-diabetic-retinopathy
#15
Ahmed M Abu El-Asrar, Kaiser Alam, Mohammad M Siddiquei, Kathleen Van den Eynde, Ghulam Mohammad, Gert De Hertogh, Ghislain Opdenakker
PURPOSE: To investigate the expression of the leukocyte proteins myeloid-related protein (MRP)-8 and MRP-14 in proliferative diabetic retinopathy (PDR) and the effect of MRP-8/MRP-14 (calprotectin) heterodimer on induction of proinflammatory factors in human retinal microvascular endothelial cells (HRMEC). METHODS: Epiretinal membranes from 20 patients with PDR and 10 patients with proliferative vitreoretinopathy (PVR), vitreous fluid samples from PDR and non-diabetic subjects and HRMEC were studied by immunohistochemistry and Western blot analysis...
November 16, 2016: Ocular Immunology and Inflammation
https://www.readbyqxmd.com/read/27846303/auranofin-inhibits-retinal-pigment-epithelium-cell-survival-through-reactive-oxygen-species-dependent-epidermal-growth-factor-receptor-mitogen-activated-protein-kinase-signaling-pathway
#16
Xiaodong Chen, Radouil Tzekov, Mingyang Su, Haiyan Hong, Wang Min, Aidong Han, Wensheng Li
Abnormal survival of retinal pigment epithelium (RPE) cells contributes to the pathogenesis of proliferative vitreoretinopathy (PVR), a sight-threatening disease. In this study, we explored the effect of the anti-rheumatic agent auranofin (AF) on RPE cell survival and studied the underlying signaling mechanisms in vitro. Our results showed that AF inhibited ARPE-19 cell survival in a dose and time-dependent manner. Application of AF induced several effects: a significant decrease in total epidermal growth factor receptor (EGFR) and an increase in phosphorylated EGFR and mitogen-activated protein kinase (MAPK), including extracellular signal-regulated kinase (ERK), P38 mitogen-activated protein kinase (P38MAPK), c-Jun N-terminal kinase (JNK), c-Jun, mitogen activated protein kinase activated protein kinase 2(MAPKAPK2), and heat shock protein 27 (HSP27)...
2016: PloS One
https://www.readbyqxmd.com/read/27845192/controlling-drug-release-from-non-aqueous-environments-moderating-delivery-from-ocular-silicone-oil-drug-reservoirs-to-combat-proliferative-vitreoretinopathy
#17
Helen Cauldbeck, Maude Le Hellaye, Mark Long, Stephnie M Kennedy, Rachel L Williams, Victoria R Kearns, Steve P Rannard
In a number of cases of retinal detachment, treatment may require the removal of the vitreous humour within the eye and replacement with silicone oil to aid healing of the retina. The insertion of silicone oil offers the opportunity to also deliver drugs to the inside of the eye; however, drug solubility in silicone oil is poor and release from this hydrophobic drug reservoir is not readily controlled. Here, we have designed a range of statistical graft copolymers that incorporate dimethylsiloxane and ethylene glycol repeat units within the side chains, allowing short chains of oligo(ethylene glycol) to be solubilised within silicone oil and provide hydrogen bond acceptor sites to interact with acid functional drug molecules...
December 28, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27828913/long-term-results-of-total-retinectomy-in-cases-with-advanced-proliferative-vitreoretinopathy
#18
Murat Karacorlu, Isil Sayman Muslubas, Mumin Hocaoglu, Serra Arf, Mehmet Giray Ersoz
PURPOSE: To evaluate the long-term results of total retinectomy in patients with rhegmatogenous retinal detachment and severe proliferative vitreoretinopathy. METHODS: Seven eyes of 7 patients had pars plana vitrectomy, with or without pars plana lensectomy, and total retinectomy, with or without silicone oil tamponade, for the management of rhegmatogenous retinal detachment and proliferative vitreoretinopathy (Grade D1-3) after previous complex vitreoretinal surgery procedures...
November 8, 2016: Retina
https://www.readbyqxmd.com/read/27798121/minireview-fibronectin-in-retinal-disease
#19
Charles G Miller, Greg Budoff, Jonathan L Prenner, Jean E Schwarzbauer
Retinal fibrosis, characterized by dysregulation of extracellular matrix (ECM) protein deposition by retinal endothelial cells, pigment epithelial cells, and other resident cell-types, is a unifying feature of several common retinal diseases. Fibronectin is an early constituent of newly deposited ECM and serves as a template for assembly of other ECM proteins, including collagens. Under physiologic conditions, fibronectin is found in all layers of Bruch's membrane. Proliferative vitreoretinopathy (PVR), a complication of retinal surgery, is characterized by ECM accumulation...
January 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/27787452/rhegmatogenous-retinal-detachment-after-intraarterial-chemotherapy-for-retinoblastoma-the-2016-founders-award-lecture
#20
Carol L Shields, Emil A T Say, Maria Pefkianaki, Carl D Regillo, Emi H Caywood, Pascal M Jabbour, Jerry A Shields
PURPOSE: To evaluate rhegmatogenous retinal detachment (RRD) in eyes with retinoblastoma after intraarterial chemotherapy (IAC). DESIGN: Retrospective case series. METHODS: Chart review. MAIN OUTCOME MEASURE: Development of RRD in the IAC era. RESULTS: Of 167 eyes in 157 consecutive patients, mean patient age at diagnosis of retinoblastoma was 19 months. Intraarterial chemotherapy was primary (75/167, 45%) or secondary (92/167, 55%)...
October 26, 2016: Retina
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