Introduction: Chronic retinal necrosis encompasses severe occlusive retinal vasculitis, granular retinitis, and vitritis. This phenotype has been observed in patients with limited immune dysfunction, cytomegalovirus (CMV) uveitis, and negative serology for human immunodeficiency virus (HIV).
Methods: Case series.
Results: We present two cases: an 85-year-old female and a 76-year-old male, both displaying unusual occlusive panretinal vasculopathy associated with long-standing necrotizing retinitis and vitritis. Anterior chamber taps with real-time polymerase chain reaction (PCR) were negative for herpesviruses and positive for Toxoplasma gondii in both cases. These findings are consistent with chronic retinal necrosis associated with toxoplasma gondii.
Conclusions: In elderly patients or those with limited immune dysfunction who present with chronic retinal necrosis, Toxoplasma gondii should be considered in the differential diagnosis.
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http://dx.doi.org/10.1080/09273948.2024.2362876 | DOI Listing |
Nat Commun
January 2025
Suzhou Key Laboratory of Nanotechnology and Biomedicine, Institute of Functional Nano & Soft Materials & Collaborative Innovation Center of Suzhou Nano Science and Technology (NANO-CIC), Soochow University, Suzhou, China.
Current treatments for fundus disorders, such as intravitreal injections, pose risks, including infection and retinal detachment, and are limited in their ability to deliver macromolecular drugs across the blood‒retinal barrier. Although non-invasive methods are safer, their delivery efficiency remains suboptimal (<5%). We have developed a wearable electrodriven switch (WES) that improves the non-invasive delivery of macromolecules to the fundus.
View Article and Find Full Text PDFAm J Ophthalmol
December 2024
Department of Ophthalmology and Vision Sciences, University of Toronto, Toronto, Ontario, Canada; Department of Ophthalmology, St. Michael's Hospital/Unity Health Toronto, Toronto, Ontario, Canada. Electronic address:
Purpose: To assess the risk of renal adverse events, particularly acute kidney injury (AKI), between intravitreal anti-vascular endothelial growth factor (anti-VEGF) agents.
Design: Meta-analysis.
Methods: A systematic literature search was conducted on Ovid Medline, Embase and the Cochrane Library for randomized controlled trials (RCTs) published from January 2005 to February 2024 involving adult patients receiving anti-VEGF intravitreal injections for agerelated macular degeneration, diabetic macular edema, and macular edema secondary to retinal vein occlusion.
PLoS One
December 2024
Department of Pathology and Laboratory Medicine, Western University, London, Ontario, Canada.
Endothelial cells and high glucose-induced endothelial dysfunction are the common origin of chronic diabetic complications such as retinopathy, nephropathy, and cardiomyopathy. Yet their common origins, the vascular manifestations of such complications are different. We examined the basal heterogeneity between microvascular endothelial cells(MECs) from the retina, kidneys, and heart, as well as their differential responses to hyperglycemia in diabetes.
View Article and Find Full Text PDFRetina
December 2024
Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA.
Purpose: To assess neurodegeneration and chorioretinal thickness in subjects with and without chronic kidney disease (CKD).
Methods: PubMed, Web of Science, Scopus and Embase were searched using proper keywords for articles published in the English language from their inception until January 2024. Publications were included if they reported optical coherence tomography (OCT) measurements of retinal or choroidal layers in patients with CKD compared to healthy or non-CKD controls.
Mol Med
December 2024
Department of Ophthalmology, Ruijin Hospital Affiliated Medical School, Shanghai Jiaotong University, 197 Ruijin er Road, Shanghai, 200025, China.
Background: Glaucoma is a group of heterogeneous neurodegenerative diseases with abnormal energy metabolism and imbalanced neuroinflammation in the retina. Thioredoxin-interacting protein (TXNIP) is involved in glucose and lipid metabolism, and associated with oxidative stress and inflammation, however, not known whether to be involved in glaucoma neuropathy and its underlying mechanisms.
Methods: To establish the chronic ocular hypertension (COH) mice model.
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