Drusen are extra-cellular deposits that form between the retinal pigment epithelium (RPE) and Bruch's membrane (BM). Numerous and/or confluent drusen are a significant risk factor for age-related macular degeneration (AMD). Here, using whole mounted human RPE preparation we show that RPE cell morphology changes in association with drusen. These changes included an increase in cell size and distortion in the regularity of their distribution. Further, although binucleation is relatively rare in human RPE, there was a marked increase in the number of binucleated RPE cell associated with individual druse. Surprisingly many of these changes were found at distances up to 400 microm from drusen.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.exer.2008.09.021 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Discovery of non-retinoid compounds that suppress the pathogenic effects of misfolded rhodopsin in a mouse model of retinitis pigmentosa.
PLoS Biol
January 2025
Department of Pharmacology and Cleveland Center for Membrane and Structural Biology, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America.
Pathogenic mutations that cause rhodopsin misfolding lead to a spectrum of currently untreatable blinding diseases collectively termed retinitis pigmentosa. Small molecules to correct rhodopsin misfolding are therefore urgently needed. In this study, we utilized virtual screening to search for drug-like molecules that bind to the orthosteric site of rod opsin and improve its folding and trafficking.
View Article and Find Full Text PDFPresumed bilateral acute idiopathic maculopathy in a pediatric patient.
Am J Ophthalmol Case Rep
March 2025
Department of Ophthalmology, Stanley M. Truhlsen Eye Institute, University of Nebraska Medical Center, Omaha, NE, USA.
Purpose: To describe a rare case of presumed bilateral acute idiopathic maculopathy (AIM) in a pediatric patient.
Observation: An 11-year-old male was evaluated for a "fuzzy Dorito-shaped" spot in the central vision of his right eye (OD) that started 3 days before presenting to our clinic. On examination, best-corrected visual acuity (BCVA) was counting fingers at 5 feet OD, and 20/25 in the left eye (OS).
An atypical case of retinal pigment epithelium tear with remodeling and visual preservation.
Taiwan J Ophthalmol
October 2024
Singapore Eye Research Institute, Singapore National Eye Centre, Singapore.
This report describes a patient with polypoidal choroidal vasculopathy (PCV) with fovea-involving retinal pigment epithelium (RPE) tear that showed tissue remodeling with a good visual outcome. Imaging over the patient's clinical course from 2019 was reviewed. A 74-year-old female presented with left submacular hemorrhage and a large multi-lobular pigment epithelial detachment.
View Article and Find Full Text PDFOptical coherence tomography characteristics in hydroxychloroquine retinopathy and the correlations with visual deterioration in Taiwanese.
Taiwan J Ophthalmol
November 2024
Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.
Purpose: This study aimed to investigate optical coherence tomography (OCT) characteristics in hydroxychloroquine (HCQ) retinopathy and their correlation with visual acuity among Taiwanese patients.
Materials And Methods: We retrospectively recruited patients undergoing long-term HCQ treatment who had received examinations of best-corrected visual acuity and OCT scans. We observed disruptions in the ellipsoid zone (EZ) and retinal pigment epithelium (RPE) across different retinal regions.
Accumulation of autophagosomes in aging human photoreceptor cell synapses.
Exp Eye Res
January 2025
Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India. Electronic address:
Autophagy is common in the aging retinal pigment epithelium (RPE). A dysfunctional autophagy in aged RPE is implicated in the pathogenesis of age-related macular degeneration. Aging human retina accompanies degenerative changes in photoreceptor mitochondria.
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!