Retinal Pigmented Epithelial Cells Obtained from Human Induced Pluripotent Stem Cells Possess Functional Visual Cycle Enzymes in Vitro and in Vivo - PMC Skip to main content Official websites use .gov A .gov website belongs to an official government organization in the United Sta…

Risk and Respirators: The Hazardous Trajectories of Soviet Occupational Safety, 1940s-80s 04_Chunikhin 603–33.qxp_03_49.3dobraszczyk 568– 6/27/22 12:34 PM Page 603 F Risk and Respirators The Hazardous Trajectories of Soviet Occupational Safety, 1940s–80s KIRILL CHUNIKHIN ABSTRACT…

ABSTRACT Subretinal fibrosis significantly contributes to vision loss in neovascular age‐related macular degeneration (nAMD). Epithelial‐to‐mesenchymal transition (EMT) in RPE cells is a key early step in subretinal fibrosis. While mitochondrial dysfunction in RPE is involved, th…

Species and environmental control of photoreceptor cell renewal Although daily renewal of OS is required for proper retinal function in all species studied, differences do occur as species have evolved and adjusted to their photopic environments. Elegant experiments performed by …

CS Graduate Student Handbook 2025-26 CS Graduate Student Handbook 2025-26 Updated 4/17/2026 1 Introduction 2 Admissions 2.1 Admission Requirements 2.2 Direct Admission from M.S. to Ph.D. 2.3 Application Deadlines 2.4 Admission Timeline 2.5 Application Requirements 2.6 GRE Score R…

To obtain images of retinoid visual cycle components within the retinas of living animals using low laser power, several critical factors required both innovation and optimization. To minimize pulse duration at the sample, high-order dispersion compensation was integrated with th…

Abstract Loss of photoreceptors and other retinal cells is a common endpoint in retinal degenerate (RD) diseases that cause blindness. Retinal transplantation is a potential therapy to replace damaged retinal cells and improve vision. In this study, we examined the development of…

Abstract The visual (retinoid) cycle is a fundamental metabolic process in vertebrate retina responsible for production of 11- cis -retinal, the chromophore of rhodopsin and cone pigments. 11- cis -Retinal is bound to opsins, forming visual pigments, and when the resulting visual…

Abstract Regeneration of the visual chromophore, 11- cis -retinal, is a critical step in restoring photoreceptors to their dark-adapted conditions. This regeneration process, called the retinoid cycle, takes place in the photoreceptor outer segments and the retinal pigment epithe…

Phagocytosis of photoreceptor (PR) outer segment (OS) apical tips by the adjacent retinal pigmented epithelium (RPE) occurs throughout life and is an extremely elevated metabolic activity. 1 – 3 In the case of rods, continual synthesis of OS proteins and their insertion into nasc…

Abstract The visual phototransduction cascade begins with a cis – trans photoisomerization of a retinylidene chromophore associated with the visual pigments of rod and cone photoreceptors. Visual opsins release their all- trans -retinal chromophore following photoactivation, whic…

Introduction Human pluripotent stem cells (hPSCs) have tremendous potential for cell replacement, drug screening, predictive toxicology and developmental studies. There are multiple methods for generating hPSCs, including blastocyst derivation [1] derivation from single blastomer…

Abstract Protein misfolding and aggregation are thought to underlie the pathogenesis of many amyloid diseases, such as Alzheimer and Parkinson diseases, whereby a stepwise protein misfolding process begins with the conversion of soluble protein monomers to prefibrillar oligomers …

# A # achromatopsia Achromatopsia is a type of cone dystrophy where there are normally problems only with vision from cone photoreceptors, the ones responsible for color and day vision and visual acuity. Therefore individuals mainly see by their rod cells, may be completely color…

Background: The development of diabetic retinopathy (DR) is incompletely understood. Administered retinylamine is stored in the retinal pigmented epithelium (RPE) where it affects the ocular visual cycle. Results: Retinylamine inhibited vascular and neural lesions of early DR. Co…