98%
921
2 minutes
20
Retinal degenerative disorders induce loss of photoreceptors associated with inflammation, and negative remodeling and plasticity of neural retina. Retinal degenerative diseases may have genetic and/or environmental causes. Degeneration of retinal pigment epithelium cells initiates a vicious circle increasing the ongoing inflammation in both retina and choroid. Flavonoids are polyphenolic molecules with antioxidant activity and dietary intake, specifically of anthocyanins and flavanols, improves oxidative stress and neuro-inflammation. In vitro and ex vivo studies have also revealed biological effects of flavonoids on retinal protection against oxidative stress and inflammation. In this brief review, the protective role of flavonoids against retinal degeneration and inflammation will be discussed along with their therapeutic potential for the treatment of retinal degenerative diseases.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8023125 | PMC |
http://dx.doi.org/10.23750/abm.v91i13-S.10683 | DOI Listing |
IEEE J Biomed Health Inform
September 2025
Retinal degenerative diseases such as age-related macular degeneration and retinitis pigmentosa cause severe vision impairment, while current electrical stimulation therapies are limited by poor spatial targeting precision. As a promising non-invasive alternative, the efficacy of temporal interference stimulation (TIS) for retinal targeting depends on optimized multi-electrode parameters. This study reconstructed a whole-head finite element model with detailed ocular structures and applied reinforcement learning (RL)-based multi-channel electrode parameter optimization to retinal stimulation.
View Article and Find Full Text PDFRetinal organoids (ROs) represent a promising regenerative strategy for restoring vision in retinal degenerative diseases, but whether host cone bipolar cells (BCs) in the primate macula can rewire with transplanted photoreceptors remains unresolved. Here, we transplanted genome-edited human retinal organoids lacking ON-BCs ( ROs) into a non-human primate macular degeneration model. Remarkably, host rod and cone BCs extended dendrites toward grafted photoreceptors, forming functional synapses confirmed by immunohistochemistry, ultrastructural imaging, and focal macular electroretinography.
View Article and Find Full Text PDFFront Ophthalmol (Lausanne)
August 2025
Aier Eye Institute, Changsha, China.
High myopia is a global health concern, often leading to degenerative retinal changes known as myopic retinopathy. Although mechanical stress, hypoperfusion, extracellular matrix remodeling, and growth factor dysregulation have been implicated in the pathogenesis of myopic retinopathy, emerging evidence highlights the critical role of chronic low-grade inflammation. Both innate and adaptive immune systems participate in myopic retinopathy through systemic and local inflammation.
View Article and Find Full Text PDFExp Eye Res
September 2025
Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China. Electronic address:
Retinitis pigmentosa (RP) is an inherited retinal degenerative disease characterized by progressive retinal pigment epithelium dysfunction and photoreceptor apoptosis, yet its pathogenesis remains unclear and no cure exists. Emerging evidence implicates the role of tryptophan metabolism in neuroinflammatory processes, prompting our investigation of serum tryptophan metabolites in RP patients versus healthy controls. Through targeted metabolomic profiling and clinical characterization, including age of onset, best corrected visual acuity (BCVA) and retinal thickness, we identified significant alterations in RP patients: marked decreases in cinnabarinic acid, xanthurenic acid, quinolinic acid and indole-3-carboxaldehyde (all p < 0.
View Article and Find Full Text PDFBiology (Basel)
August 2025
Department of Oral Biology, The Dental College of Georgia, Augusta University, Augusta, GA 30912, USA.
The retina is highly sensitive to oxygen and blood supply, and hypoxia plays a key role in retinal diseases such as diabetic retinopathy (DR) and age-related macular degeneration (AMD). Müller glial cells, which are essential for retinal homeostasis, respond to injury and hypoxia with reactive gliosis, characterized by the upregulation of the glial fibrillary acidic protein (GFAP) and vimentin, cellular hypertrophy, and extracellular matrix changes, which can impair retinal function and repair. The retinal pigment epithelium (RPE) supports photoreceptors, forms part of the blood-retinal barrier, and protects against oxidative stress; its dysfunction contributes to retinal degenerative diseases such as AMD, retinitis pigmentosa (RP), and Stargardt disease (SD).
View Article and Find Full Text PDF