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https://www.readbyqxmd.com/read/29353344/safety-study-of-intravitreal-and-suprachoroidal-laponite-clay-in-rabbit-eyes
#1
Esther Prieto, Eugenio Vispe, Alba De Martino, Miriam Idoipe, María J Rodrigo, Elena Garcia-Martin, José M Fraile, Vicente Polo-Llorens, José A Mayoral
PURPOSE: To study the safety and biocompatibility of Laponite clay (LAP) within an intravitreal and suprachoroidal administration in rabbit eyes. METHODS: Thirty-two New Zealand albino rabbits were divided into two experimental groups to test intravitreal (IVT group) and suprachoroidal (SCS group) administration of a 100-μl and 50-μl Laponite suspension respectively. Following injection, the eyes were monitored by ocular tonometry, slit-lamp eye examination and indirect ophthalmoscopy, at 24 h, 1, 4, 12, and 14 weeks post administration...
January 20, 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29350689/safety-of-intravitreal-injection-of-ranibizumab-in-early-pregnancy-a-series-of-three-cases
#2
P Fossum, C Couret, B Briend, M Weber, L Lagarce
PurposeRanibizumab is used in the treatment of choroidal neovascularization (CNV). Although systemic exposure to ranibizumab is low after ocular administration, its mechanism of action must be regarded as potentially teratogenic and embryo-fetotoxic. Women are advised to wait 3 months after the last dose of treatment with ranibizumab before conceiving. Little is known about the fetal side-effects of this drug.MethodsThree pregnant women were treated with ranibizumab. One patient had idiopathic CNV.ResultsAfter receiving injections at 10 and 21 weeks after her last menstrual period (LMP), she gave birth to a healthy child...
January 19, 2018: Eye
https://www.readbyqxmd.com/read/29348424/intraocular-inflammatory-cytokines-in-patients-with-neovascular-age-related-macular-degeneration-before-and-after-initiation-of-intravitreal-injection-of-anti-vegf-inhibitor
#3
Tomohito Sato, Masaru Takeuchi, Yoko Karasawa, Toshio Enoki, Masataka Ito
Age-related macular degeneration (AMD) is a cause of blindness in people older than 50 years. Accumulating evidence indicates the involvement of systemic and local inflammation in the pathogenesis and progression of AMD. Aflibercept is an anti-vascular endothelial growth factor (VEGF) inhibitor, and intravitreal injection of aflibercept (IVA) is the approved treatments of neovascular AMD (nAMD), but the effect on inflammatory response remains unclear. The aim of our study was to investigate the profiles of inflammatory cytokines in the aqueous humor of nAMD patients before and after initiation of IVA...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29344488/intravitreal-aflibercept-as-rescue-therapy-for-post-radiation-cystoid-macular-edema-resistant-to-intravitreal-bevacizumab-outcomes-at-1-year
#4
Mohammed Ali Khan, Arman Mashayekhi, Jerry A Shields, Carol L Shields
Background/Aims: To investigate the efficacy of intravitreal aflibercept as rescue therapy for post-radiation cystoid macular edema (CME) resistant to prior treatment with intravitreal bevacizumab (IVB). Methods: Retrospective, interventional, case-controlled series. Eyes with persistent post-radiation CME were treated with intravitreal aflibercept (2 mg/0.05 mL). Central macular thickness (CMT) and visual acuity were compared to a matched control group treated with only IVB at 1 year...
November 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29343528/effect-of-intravitreal-triamcinolone-acetonide-injection-at-the-end-of-vitrectomy-for-vitreous-haemorrhage-related-to-proliferative-diabetic-retinopathy
#5
Yoshihiro Takamura, Masahiko Shimura, Takashi Katome, Hideaki Someya, Masahiko Sugimoto, Takao Hirano, Taiji Sakamoto, Makoto Gozawa, Takehiro Matsumura, Masaru Inatani
BACKGROUND/AIMS: To investigate whether intravitreal injection of triamcinolone acetonide (IVTA) combined with vitrectomy prevents postoperative inflammation in patients with vitreous haemorrhage (VH) due to proliferative diabetic retinopathy (PDR). METHODS: This prospective, multicentre, randomised study conducted at seven sites in Japan enrolled patients diagnosed as having VH following PDR. Patients underwent vitrectomy with (IVTA+VIT group) or without (VIT group) IVTA at the end of the surgery...
January 17, 2018: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29342845/anesthetic-preconditioning-as-endogenous-neuroprotection-in-glaucoma
#6
Tsung-Han Chou, Ganeswara Rao Musada, Giovanni Luca Romano, Elizabeth Bolton, Vittorio Porciatti
Blindness in glaucoma is the result of death of Retinal Ganglion Cells (RGCs) and their axons. RGC death is generally preceded by a stage of reversible dysfunction and structural remodeling. Current treatments aimed at reducing intraocular pressure (IOP) are ineffective or incompletely effective in management of the disease. IOP-independent neuroprotection or neuroprotection as adjuvant to IOP lowering in glaucoma remains a challenge as effective agents without side effects have not been identified yet. We show in DBA/2J mice with spontaneous IOP elevation and glaucoma that the lifespan of functional RGCs can be extended by preconditioning RGCs with retrobulbar lidocaine in one eye at four months of age that temporary blocks RGC axonal transport...
January 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29340649/optic-nerve-regeneration-after-crush-remodels-the-injury-site-molecular-insights-from-imaging-mass-spectrometry
#7
David T Stark, David M G Anderson, Jacky M K Kwong, Nathan Heath Patterson, Kevin L Schey, Richard M Caprioli, Joseph Caprioli
Purpose: Mammalian central nervous system axons fail to regenerate after injury. Contributing factors include limited intrinsic growth capacity and an inhibitory glial environment. Inflammation-induced optic nerve regeneration (IIR) is thought to boost retinal ganglion cell (RGC) intrinsic growth capacity through progrowth gene expression, but effects on the inhibitory glial environment of the optic nerve are unexplored. To investigate progrowth molecular changes associated with reactive gliosis during IIR, we developed an imaging mass spectrometry (IMS)-based approach that identifies discriminant molecular signals in and around optic nerve crush (ONC) sites...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29339917/association-of-treatment-adherence-with-real-life-va-outcomes-in-amd-dme-and-brvo-patients
#8
Christoph Ehlken, Mandy Helms, Daniel Böhringer, Hansjürgen T Agostini, Andreas Stahl
Purpose: Real-life clinical outcomes of patients treated with anti-VEGF drugs for neovascular age-related macular degeneration (nAMD), diabetic macular edema (DME), or macular edema secondary to branch retinal vein occlusion (BRVO) are often inferior to results from randomized clinical trials. This observational cohort study investigates treatment adherence and real-life clinical outcomes within the first year of treatment. Patients and methods: A total of 708 treatment-naïve patients (466 nAMD, 134 DME, and 108 BRVO) were included...
2018: Clinical Ophthalmology
https://www.readbyqxmd.com/read/29339063/evolution-of-intravitreal-therapy-for-retinal-diseases-from-cmv-to-cnv-the-lxxiv-edward-jackson-memorial-lecture
#9
Daniel F Martin
PURPOSE: To present the evolution of intravitreal therapy for retinal diseases and its impact on clinical practice. DESIGN: Retrospective literature review and personal perspective. METHODS: Retrospective literature review and personal perspective. RESULTS: Pharmacotherapeutic advances in retinal disease have been remarkable over the last 25 years. Almost all of the new drugs developed have required intravitreal administration to be highly effective, leading to an exponential increase in the annual number of intravitreal injections given...
January 12, 2018: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/29336897/the-real-world-effect-of-intravitreous-anti-vascular-endothelial-growth-factor-drugs-on-intraocular-pressure-an-analysis-using-the-iris-registry
#10
Elizabeth A Atchison, Kevin M Wood, Cynthia G Mattox, Catherine N Barry, Flora Lum, Mathew W MacCumber
PURPOSE: To identify sustained differences in intraocular pressure (IOP) after intravitreous injections of anti-vascular endothelial growth factor (VEGF) drugs. DESIGN: Database study. PARTICIPANTS: Patients seeing an ophthalmic provider who contributes to the database. METHODS: We identified a total of 23 776 unique patients who received only a single type of anti-VEGF medication (bevacizumab, aflibercept, or ranibizumab) by injection in the right eye in the American Academy of Ophthalmology Intelligent Research in Sight Registry...
January 11, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29336896/targeted-retinal-photocoagulation-for-diabetic-macular-edema-with-peripheral-retinal-nonperfusion-three-year-randomized-dave-trial
#11
David M Brown, William C Ou, Tien P Wong, Rosa Y Kim, Daniel E Croft, Charles C Wykoff
PURPOSE: To evaluate the effect of targeted retinal photocoagulation (TRP) on visual and anatomic outcomes and treatment burden in eyes with diabetic macular edema (DME). DESIGN: Phase I/II prospective, randomized, controlled clinical trial. PARTICIPANTS: Forty eyes of 29 patients with center-involved macular edema secondary to diabetes mellitus. METHODS: Eyes with center-involved DME and Early Treatment Diabetic Retinopathy Study (ETDRS) best-corrected visual acuity (BCVA) between 20/32 and 20/320 (Snellen equivalent) were randomized 1:1 to monotherapy with 0...
January 11, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29331556/polypoidal-choroidal-vasculopathy-definition-pathogenesis-diagnosis-and-management
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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