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https://www.readbyqxmd.com/read/29331556/polypoidal-choroidal-vasculopathy-definition-pathogenesis-diagnosis-and-management
#1
REVIEW
Chui Ming Gemmy Cheung, Timothy Y Y Lai, Paisan Ruamviboonsuk, Shih-Jen Chen, Youxin Chen, K Bailey Freund, Fomi Gomi, Adrian H Koh, Won-Ki Lee, Tien Yin Wong
Polypoidal choroidal vasculopathy (PCV) is an age-related macular degeneration (AMD) subtype and is seen particularly in Asians. Previous studies have suggested disparity in response to intravitreal injections of anti-vascular endothelial growth factor (VEGF) agents between PCV and typical AMD, and thus, the preferred treatment for PCV has remained unclear. Recent research has provided novel insights into the pathogenesis of PCV, and imaging studies based on OCT suggest that PCV belongs to a spectrum of conditions characterized by pachychoroid, in which disturbance in the choroidal circulation seems to be central to its pathogenesis...
January 10, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29329580/evidence-for-the-activation-of-pyroptotic-and-apoptotic-pathways-in-rpe-cells-associated-with-nlrp3-inflammasome-in-the-rodent-eye
#2
Jiangyuan Gao, Jing Z Cui, Eleanor To, Sijia Cao, Joanne A Matsubara
BACKGROUND: Age-related macular degeneration (AMD) is a devastating eye disease causing irreversible vision loss in the elderly. Retinal pigment epithelium (RPE), the primary cell type that is afflicted in AMD, undergoes programmed cell death in the late stages of the disease. However, the exact mechanisms for RPE degeneration in AMD are still unresolved. The prevailing theories consider that each cell death pathway works independently and without regulation of each other. Building upon our previous work in which we induced a short burst of inflammasome activity in vivo, we now investigate the effects of prolonged inflammasome activity on RPE cell death mechanisms in rats...
January 12, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29326855/all-types-of-age-related-macular-degeneration-in-one-patient
#3
Zafer Cebeci, Nur Kır
Herein, we describe a neovascular age-related macular degeneration patient with retinal angiomatous proliferation (RAP) and polypoidal choroidal vasculopathy (PCV) coexisting in the same eye at the time of diagnosis. A 55-year-old woman presented with a history of decreased vision in her left eye. Fundoscopy, fluorescein and indocyanine green angiography, and optical coherence tomography imaging revealed RAP and PCV lesions in her left eye at first diagnosis. The patient received intravitreal ranibizumab therapy but developed tachyphylaxis after the first dose despite having three monthly doses...
December 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/29325900/orexin-b-modulates-synaptic-transmission-of-rod-bipolar-cells-in-rat-retina
#4
Gong Zhang, Xiao-Hua Wu, Guo-Zhong Xu, Shi-Jun Weng, Xiong-Li Yang, Yong-Mei Zhong
Orexin-A, -B play a crucial role in arousal and feeding by activating two G-protein-coupled receptors: orexin receptor 1 (OX1R) and orexin receptor 2 (OX2R). Orexins, along with orexin receptors, are expressed in retinal neurons, and they have been shown to differentially modulate excitatory AMPA receptors of amacrine and ganglion cells in the inner retina. In this work we report that orexin-B modulates the activity of rod bipolar cells (RBCs) located in the outer retina of rat. Intravitreal injection of orexin-B increased the amplitude of the scotopic electroretinographic b-wave, a reflection of RBC activity, recorded in vivo...
January 8, 2018: Neuropharmacology
https://www.readbyqxmd.com/read/29324624/intravitreal-aflibercept-in-the-treatment-of-polypoidal-choroidal-vasculopathy-associated-with-morning-glory-syndrome
#5
Claudio Iovino, Maurizio Fossarello, Enrico Peiretti
PURPOSE: To describe an unusual case of polypoidal choroidal vasculopathy secondary to morning glory syndrome successfully treated with three aflibercept intravitreal injections. METHODS: Case report. RESULTS: A 68-year-old white man presented with a 2-month history of diminished vision of his left eye. Fundus examination showed a morning glory syndrome disk anomaly with some perimacular subretinal hemorrhages and lipid depositions. Fundus autofluorescence, fluorescein and green indocyanine angiography, spectral domain optical coherence tomography, and optical coherence tomography angiography were performed and confirmed the presence of a juxtapapillary polypoidal choroidal vasculopathy with intraretinal and subretinal fluid...
January 10, 2018: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29324593/incidence-and-long-term-visual-acuity-outcomes-of-retinal-pigment-epithelium-tears-after-intravitreal-anti-vascular-endothelial-growth-factor-treatment-of-neovascular-age-related-macular-degeneration
#6
Clara Vazquez-Alfageme, Luke Nicholson, Robin D Hamilton, Praveen J Patel
PURPOSE: To report the incidence of retinal pigment epithelium tears in eyes treated with aflibercept for neovascular age-related macular degeneration and compare it with ranibizumab, and to describe long-term visual outcomes of retinal pigment epithelium tears after intensive anti-vascular endothelial growth factor treatment. METHODS: Retrospective analysis of clinical charts, spectral domain optical coherence tomography and fundus fluorescein angiography imaging of consecutive naive patients treated with intravitreal aflibercept or ranibizumab for neovascular age-related macular degeneration...
January 10, 2018: Retina
https://www.readbyqxmd.com/read/29320451/the-pathogenesis-of-staphylococcus-aureus-eye-infections
#7
REVIEW
Richard J O'Callaghan
Staphylococcus aureus is a major pathogen of the eye able to infect the tear duct, eyelid, conjunctiva, cornea, anterior and posterior chambers, and the vitreous chamber. Of these infections, those involving the cornea (keratitis) or the inner chambers of the eye (endophthalmitis) are the most threatening because of their potential to cause a loss in visual acuity or even blindness. Each of these ocular sites is protected by the constitutive expression of a variety of antimicrobial factors and these defenses are augmented by a protective host response to the organism...
January 10, 2018: Pathogens
https://www.readbyqxmd.com/read/29319204/observation-of-curative-effect-of-intravitreal-injection-of-conbercept-in-wet-age-related-macular-degeneration-optical-coherence-tomography-analysis-after-injection
#8
Wen Yang, Ying Tan, Chaowei Li, Yi Liu, Guohua Lu
To observe the clinical efficacy of intravitreal injection of conbercept in the treatment of wet age-related macular degeneration (wAMD), optical coherence tomography (OCT) and the best corrected visual acuity (BCVA) was observed to measure the changes of anatomical changes of central macular thickness (CMT) and the area and volume of retinal pigment epithelium (RPE) uplift. Fifteen patients (15 eyes) with wet AMD were enrolled in this study. All patients underwent intravitreal injection of conbercept of 0...
January 10, 2018: Microscopy Research and Technique
https://www.readbyqxmd.com/read/29317400/two-year-outcomes-of-intravitreal-ziv-aflibercept
#9
Ahmad M Mansour, Mohammed Ashraf, Abdulrazzak Charbaji, Muhammad H Younis, Ahmed A Souka, Avantika Dogra, Hana A Mansour, Jay Chhablani
AIM: To assess the two-year outcome of intravitreal ziv-aflibercept (IVZ) in eyes with macular diseases. METHODS: Consecutive subjects with various macular diseases that received six or more of 0.05 mL IVZ (1.25 mg) injections with at least 1 year follow-up were included. Outcome measures were best-corrected visual acuity (BCVA) (logarithm of the minimum angle of resolution) and central macular thickness (CMT) on spectral domain optical coherence tomography...
January 9, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29316389/naphthalocyanine-as-a-new-photothermal-actuator-for-lipid-based-drug-delivery-systems
#10
Joanne D Du, Linda Hong, Angel Tan, Ben J Boyd
One approach to address the substantial global burden of ocular diseases such as aged related macular degeneration is using light-activated drug delivery to obviate the need for highly invasive and frequent need for costly intravitreal injections. To enable such systems, new light responsive materials are required. This communication reports the use of silicon 2,3-naphthalocyanine bis(trihexylsilyloxide) (SiNC), a small molecule photosensitizer as a new actuator for triggering light responsive lipid-based drug delivery systems...
January 9, 2018: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29303154/a-novel-and-less-invasive-technique-to-assess-cytokine-profile-of-vitreous-in-patients-of-diabetic-macular-oedema
#11
G Srividya, M Jain, K Mahalakshmi, S Gayathri, R Raman, N Angayarkanni
PurposeA pilot study to validate the collection of vitreous reflux (VR) after intravitreal injection using Schirmers tear strips was carried out. We assessed its efficiency for proteomics studies by estimating the differential expression of 27 cytokines using multiplexed bead array in diabetic macular oedema and proliferative diabetic retinopathy. To set, validate and assess the efficacy of Schirmer tear strips for collecting VR in patients undergoing intravitreal injections for diabetic macular oedema (DME)...
January 5, 2018: Eye
https://www.readbyqxmd.com/read/29301231/apolipoprotein-m-inhibits-angiogenic-and-inflammatory-response-by-sphingosine-1-phosphate-on-retinal-pigment-epithelium-cells
#12
Ryo Terao, Megumi Honjo, Makoto Aihara
Sphingosine 1-phosphate (S1P) is a potent lipid mediator that modulates inflammatory responses and proangiogenic factors. It has been suggested that S1P upregulates choroidal neovascularization (CNV) and may be deeply involved in the pathogenesis of exudative age-related macular degeneration (AMD). Recent studies have suggested that apolipoprotein M (ApoM), a carrier protein for S1P, modulates the biological properties of S1P in the pathogenesis of atherosclerosis. However, the role of ApoM/S1P in AMD has not been explored...
December 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29290015/changes-in-systemic-vascular-endothelial-growth-factor-levels-after-intravitreal-injection-of-aflibercept-in-infants-with-retinopathy-of-prematurity
#13
Chung-Ying Huang, Reyin Lien, Nan-Kai Wang, An-Ning Chao, Kuan-Jen Chen, Tun-Lu Chen, Yih-Shiou Hwang, Chi-Chun Lai, Wei-Chi Wu
BACKGROUND: To investigate the levels of VEGF in the systemic circulation of patients with type 1 ROP who received intravitreal injections of 1 mg (0.025 mL) aflibercept (IVA) or 0.625 mg (0.025 mL) bevacizumab (IVB). METHODS: Patients who had type 1 ROP and received either IVA or IVB were enrolled in this prospective study. Serum and plasma samples were collected prior to and up to 12 weeks after IVB or IVA treatment. The serum and plasma VEGF levels were measured using enzyme-linked immunosorbent assays (ELISAs), and the platelet levels in the blood were also quantified...
December 30, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29285149/the-importance-of-pegaptanib-sodium-treatment-for-patients-with-vascular-active-vitreoretinopathy
#14
Rui Zhang, Xin Sun, Bo Niu
The aim of the present study was to report the importance of pegaptanib sodium (PGSD) injection treatment for vascular active vitreoretinopathy (VAVR). A total of 82 patients with VAVR diagnosed by increasing subretinal exudation were enrolled and received a single intravitreal injection of PGSD. The efficacies of PGSD for patients with VAVR were analyzed using photography, fluorescein angiography and optical coherence tomography. The pathological changes in vascular activity, amount of exudation and visual acuity between the PGSD, and placebo group were also compared...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29284110/efficacy-of-lenvatinib-a-multitargeted-tyrosine-kinase-inhibitor-on-laser-induced-cnv-mouse-model-of-neovascular-amd
#15
Xian Wei, Ting Zhang, Yuqin Yao, Shaoxue Zeng, Min Li, Haotian Xiang, Chengjian Zhao, Guiqun Cao, Minhui Li, Ran Wan, Ping Yang, Jinliang Yang
Neovascular age-related macular degeneration (AMD) is a leading cause of vision loss worldwide. Although intravitreal injection of anti-VEGF antibodies and VEGF Trap have significant clinical benefits, the complications of intravitreal injection, drug resistance and patient compliance still need to be concerned. In this study, the effects of an orally administered multi-targeted tyrosine kinase inhibitor (Lenvatinib, E7080) were evaluated in vitro and in vivo on neovascular AMD mouse model. The results showed that E7080 effectively inhibited the proliferation, migration and tubule formation of human choroidal microvascular endothelial cells (HCMECs), and suppressed the angiogenesis of zebrafish subintestinal vessels without causing malformation...
December 25, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/29283693/anterograde-transport-in-axons-of-the-retinal-ganglion-cells-and-its-relationship-to-the-intraocular-pressure-during-aging-in-mice-with-hereditary-pigmentary-glaucoma
#16
Michal Fiedorowicz, Jaroslaw Orzel, Bartosz Kossowski, Marlena Welniak-Kaminska, Tomasz Choragiewicz, Maciej Swiatkiewicz, Robert Rejdak, Piotr Bogorodzki, Pawel Grieb
PURPOSE: To establish a relationship between impairment of the anterograde axonal transport (AAT) in the axons of the retinal ganglion cells and the intraocular pressure (IOP) during aging in mice with hereditary glaucoma. METHODS: Quantitative in vivo approach based on manganese enhanced magnetic resonance imaging was developed in order to evaluate AAT in 3-, 6-, and 14-month old DBA/2J mice that develop age-dependent pigmentary glaucoma or age-matched C57Bl/6 mice that do not develop any retinal disease...
December 28, 2017: Current Eye Research
https://www.readbyqxmd.com/read/29283132/efficiency-of-fenofibrate-in-facilitating-the-reduction-of-central-macular-thickness-in-diabetic-macular-edema
#17
Srilakshmi Srinivasan, Prathibha Hande, Jyoti Shetty, Sindhu Murali
PURPOSE: The purpose of this study is to study the benefit of addition of oral fenofibrate to the current regimen of diabetic macular edema (DME) management and quantify its effect on macular thickness and visual function in DME. METHODS: Fifty-three eyes of 50 patients were randomized into treatment (Group A) (oral fenofibrate 160 mg/day) and control groups (Group B). Both groups underwent treatment of DME as per the standard treatment protocol of our hospital including intravitreal injections (anti-vascular endothelial growth factor/steroid) and grid laser...
January 2018: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29282402/acute-endophthalmitis-caused-by-leuconostoc-spp-following-intravitreal-bevacizumab-injection
#18
Supreet Singh, Chirag V Patel, Kamal Kishore
We present a case of acute endophthalmitis caused by Leuconostoc spp. following intravitreal bevacizumab injection. An 86-year-old immunocompetent female developed acute endophthalmitis after intravitreal injection of bevacizumab for neovascular age-related macular degeneration. The patient presented with pain, visual acuity of hand motions, hypopyon, and dense vitritis 96 h after treatment. She was treated with vitreous and anterior chamber tap followed by intravitreal injections of 1 mg vancomycin, 2.25 mg ceftazidime, and 400 μg dexamethasone...
September 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/29282401/recurrent-vitreous-hemorrhage-from-an-optic-nerve-retinal-arterial-macroaneurysm
#19
Jessica F Yang, Kamal Kishore
Objective: To report a case of recurrent vitreous hemorrhage from an optic nerve retinal arterial macroaneurysm (ONRAM) successfully treated with intraoperative endolaser. Patient and Methods: A 92-year-old woman on oral aspirin and warfarin anticoagulation for atrial fibrillation developed three episodes of dense vitreous hemorrhage from an ONRAM. Due to failure of the vitreous hemorrhage to clear spontaneously, a total of three pars plana vitrectomy (PPV) procedures were performed along with a 1...
September 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/29282399/chronic-retinal-necrosis-severely-complicated-by-neovascular-glaucoma-a-case-report
#20
Takanori Matsuoka, Kazunobu Asao, Noriyasu Hashida, Kohji Nishida
Background: Chronic retinal necrosis (CRN) is a rare chronic granular necrotizing retinitis that was first described in 2013. CRN is characterized by intraocular inflammation accompanied by occlusive vasculitis, granular retinitis, and slowly progressing necrosis around the retina in a host with partial immune dysfunction. Cytomegalovirus (CMV) is reported to be a causative agent. There are several ocular complications such as retinal detachment and neovascular glaucoma; however, there has been no description of a clinical manifestation of neovascular glaucoma in CRN...
September 2017: Case Reports in Ophthalmology
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