AI Article Synopsis
- The study focuses on a 69-year-old man with chronic diabetic cystoid macular edema (CME) who underwent a surgical procedure (vitrectomy) to remove a specific cystoid lesion that was causing vision issues.
- Histopathological and immunohistochemical analyses were conducted on the removed lesion to examine its composition, revealing it contained fibrin and advanced glycation end-products (AGEs).
- This case report is notable as it provides the first detailed examination of the components found in refractory CME, suggesting that the presence of AGEs may hinder the degradation of fibrin, potentially contributing to the persistence of CME.
Article Abstract
The present study describes the case of a patient with refractory diabetic cystoid macular edema who underwent vitrectomy with removal of the cystoid lesion component. The current study also performed histopathological and immunohistochemical analyses of the cystoid lesion component to assess fibrin/fibrinogen and advanced glycation end-products (AGEs) immunoreactivity. A 69-year-old Japanese man presented with visual loss in the left eye due to residual cystoid macular edema (CME) refractory to anti-vascular endothelial growth factor therapy. Best-corrected visual acuity was 1.2 in the right eye (OD) and 0.5 in the left eye (OS). Fundus examination showed dot hemorrhages and hard exudates in the peri-macular region with pan-retinal photocoagulation scars in both eye. Swept-source optical coherence tomography revealed CME with slight hyperreflectivity in the cyst OS. A total of 3 months after the initial visit, pars plana vitrectomy was performed, and the translucent solidified component within the cystoid lesion was isolated. Histopathologically, the excised component was elliptical in shape, measuring 0.7x0.4 mm and exhibited homogeneous eosinophilic material without cellular components. No membranous structure was observed surrounding the component. Immunohistochemistry demonstrated that the tissue was positive for fibrin/fibrinogen and weakly positive for AGEs, but was negative for glial fibrillary acidic protein, type 1 collagen and receptor for AGEs. To the best of our knowledge, the present case report is the first to histopathologically examine the contents of refractory CME, and to immunohistochemically demonstrate that fibrin in diabetic CME may be post-translationally modified by AGEs. These results suggested that fibrin in CME may escape degradation by plasmin due to post-translational modifications.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10731153 | PMC |
| http://dx.doi.org/10.3892/br.2023.1701 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effectiveness and cytokine profile of combined anti-vascular endothelial growth factor and corticosteroid therapy for chronic retinal vein occlusion.
Graefes Arch Clin Exp Ophthalmol
January 2025
Department of Ophthalmology and Micro-Technology, Yokohama City University, 4-57 Urafunecho, Minami-ku, Yokohama, 232-0024, Kanagawa, Japan.
Purpose: To investigate whether sub-Tenon injection of triamcinolone acetonide (STTA) combined with anti-vascular endothelial growth factor (VEGF) prolongs the recurrence intervals of macular edema (ME) for chronic retinal vein occlusion (RVO) and to investigate the differences in intraocular inflammatory cytokines between good responders (GRs) and non-responders (NRs).
Methods: This retrospective, observational study involved 42 eyes of 42 patients with ME due to chronic RVO who had received only anti-VEGF for ≥ 1 year and were transitioned to combination therapy. GRs were defined as patients whose recurrence intervals were prolonged by ≥ 2 weeks compared with patients receiving anti-VEGF alone.
A pharmacovigilance study on the safety of faricimab in real-world scenario using FDA adverse event reporting system database.
Expert Opin Drug Saf
January 2025
Department of Pharmacy, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Background: Faricimab is predominantlyprescribed for conditions such as age-related macular degeneration (AMD),diabetic macular edema (DME), and macular edema related to retinal veinocclusion (RVO-ME). Currently, a notable absence of large-scale, real-worldstudies focusing on the adverse reactions of faricimab exists.
Methods: Thisstudy assesses the side effects of faricimab by analyzing reports of adverseevents (AEs) from the FDA's AEReporting System (FAERS) database.
Switching to faricimab from the current anti-VEGF therapy: evidence-based expert recommendations.
BMJ Open Ophthalmol
January 2025
Ophthalmology & Vision Sciences, Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
Dual inhibition of the angiopoietin (Ang)/Tie and vascular endothelial growth factor (VEGF) signalling pathways in patients with retinal diseases, such as neovascular age-related macular degeneration (nAMD) and diabetic macular oedema (DME), may induce greater vascular stability and contribute to increased treatment efficacy and durability compared with treatments that only target the VEGF pathway. Faricimab, a bispecific intravitreal agent that inhibits both VEGF and Ang-2, is the first injectable ophthalmic drug to achieve treatment intervals of up to 16 weeks in Phase 3 studies for nAMD and DME while exhibiting improvements in visual acuity and retinal thickness. Data from real-world studies have supported the safety, visual and anatomic benefits and durability of faricimab, even in patients who were previously treated with other intravitreal agents.
View Article and Find Full Text PDFPerifoveal vascular anomalous complex and telangiectatic capillaries: An overview of two entities potentially sharing a common pathophysiology.
Surv Ophthalmol
January 2025
School of Medicine, Vita-Salute San Raffaele University, Milan, Italy; Division of head and neck, Ophthalmology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy. Electronic address:
Focal capillary ectasia in the macular region can manifest in distinct clinical scenarios, which can be categorized into two main entities: perifoveal vascular anomalous complex (PVAC) and telangiectatic capillaries (TelCaps). PVAC represents a primary, idiopathic condition, whereas TelCaps occur secondary to underlying vascular disorders, including diabetic macular edema and retinal vein occlusion. We provide a comprehensive analysis of these two entities, encompassing their clinical presentations, multimodal imaging findings, histological evidence, and differential diagnosis from other retinal microvascular abnormalities, such as Type 1 macular telangiectasia, adult-onset Coats disease, Type 3 macular neovascularization in age-related macular degeneration, and retinal arterial macroaneurysms.
View Article and Find Full Text PDFThe severity of coronary heart disease and the incidence of later diabetic retinopathy in diabetic population: A retrospective cohort study.
PLoS One
January 2025
Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.
Objectives: The coronary heart disease (CHD) can influence the development of several diseases. The presence of CHD is correlated to a higher incidence of concurrent diabetic retinopathy (DR) in previous study. Herein, we aim to analyze the relationship between the CHD severity and following DR with different severity.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!