The polarized phenotype of the retinal pigment epithelium is crucial for the outer retina-blood barrier and support of photoreceptors and underlying choroid, and its disruption plays a central role in degenerative retinopathies. Although the mechanisms of polarization remain mostly unknown, they are fundamental for homeostasis of the outer retina. Recent research is revealing a growing picture of interconnected tissues in the outer retina, with the retinal pigment epithelium at the center. This review discusses how elements of epithelial polarity relate to emerging apical interactions with the neural retina, basolateral cross-talk with the underlying Bruch's membrane and choriocapillaris, and tight junction biology. An integrated view of outer retina physiology is likely to provide insights into the pathogenesis of blinding diseases.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7035989 | PMC |
| http://dx.doi.org/10.1016/j.ceb.2019.08.001 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Advancing Insights into Pediatric Macular Diseases: A Comprehensive Review.
J Clin Med
January 2025
Department of Ophthalmology, Boston Children's Hospital, Boston, MA 02115, USA.
Pediatric macular disorders are a diverse group of inherited retinal diseases characterized by central vision loss due to dysfunction and degeneration of the macula, the region of the retina responsible for high-acuity vision. Common disorders in this category include Stargardt disease, Best vitelliform macular dystrophy, and X-linked retinoschisis. These conditions often manifest during childhood or adolescence, with symptoms such as progressive central vision loss, photophobia, and difficulty with fine visual tasks.
View Article and Find Full Text PDFClinical Outcomes Following a Switch of Therapy to Faricimab in Patients Affected by Neovascular Age-Related Macular Degeneration.
J Clin Med
January 2025
Department of Ophthalmology, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstr. 1, 55131 Mainz, Germany.
In this study, we evaluated clinical outcomes following a therapy switch to Faricimab, in a patient cohort affected by neovascular age-related macular degeneration (nAMD), having received prior intravitreal anti-VEGF therapy. A retrospective investigation, including 28 eyes of 23 patients, treated for nAMD at the University Medical Center Mainz, Germany was performed. A switch in therapy to Faricimab was conducted, due to an inadequate response to the previous anti-VEGF treatment.
View Article and Find Full Text PDFThe Role of Individual Residues in the N-Terminus of Arrestin-1 in Rhodopsin Binding.
Int J Mol Sci
January 2025
Department of Pharmacology, Vanderbilt University, Nashville, TN 37232, USA.
Sequences and three-dimensional structures of the four vertebrate arrestins are very similar, yet in sharp contrast to other subtypes, arrestin-1 demonstrates exquisite selectivity for the active phosphorylated form of its cognate receptor, rhodopsin. The N-terminus participates in receptor binding and serves as the anchor of the C-terminus, the release of which facilitates arrestin transition into a receptor-binding state. We tested the effects of substitutions of fourteen residues in the N-terminus of arrestin-1 on the binding to phosphorylated and unphosphorylated light-activated rhodopsin of wild-type protein and its enhanced mutant with C-terminal deletion that demonstrates higher binding to both functional forms of rhodopsin.
View Article and Find Full Text PDFCobalt Protoporphyrin Downregulates Hyperglycemia-Induced Inflammation and Enhances Mitochondrial Respiration in Retinal Pigment Epithelial Cells.
Antioxidants (Basel)
January 2025
Graduate Institute of Biomedical Engineering, National Chung-Hsing University, Taichung 402, Taiwan.
Diabetic retinopathy is characterized by hyperglycemic retinal pigment epithelial cells that secrete excessive pro-inflammatory cytokines and VEGF, leading to retinal damage and vision loss. Cobalt protoporphyrin (CoPP) is a compound that can reduce inflammatory responses by inducing high levels of HO-1. In the present study, the therapeutic effects of CoPP were examined in ARPE-19 cells under hyperglycemia.
View Article and Find Full Text PDF[Differential diagnoses of central serous chorioretinopathy : Is that really a central serous chorioretinopathy?].
Ophthalmologie
January 2025
Department of Ophthalmology, University Medical Center Hamburg-Eppendorf, Hamburg, Deutschland.
The accurate diagnosis of central serous chorioretinopathy (CSC) and its distinction from differential diagnoses is crucial for effective patient counseling and treatment. This is achieved through a targeted patient history and multimodal imaging, which distinguish CSC from other ocular diseases also characterized by subretinal fluid and changes in the retinal pigment epithelium. In this article we identify the key differential diagnoses of CSC and illustrate the characteristic differential diagnostic features of each disease.
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!