ArticleExperimental eye research2024
Mechanisms of retinal photoreceptor loss in spontaneously hypertensive rats.
Article in Experimental eye research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Hypertension and brain damage: evidence from rodent models.Laboratory animal research · 2026Review
- Emerging Roles of Regulated Cell Death-mediated Inflammation in Pathophysiology of Ocular Diseases.Journal of ophthalmic & vision research · 2026Review
- Effects of different light spectra on locomotion, anxiety, and heart rate in spontaneously hypertensive rats and Wistar-Kyoto rats.IBRO neuroscience reports · 2025Article
- Single-Cell RNA Sequencing Revealed Functional Conjunctival Keratinocytes Loss via TGF-β-Wnt/β-Catenin Signaling in Sjögren's Syndrome Related Dry Eye.Investigative ophthalmology & visual science · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Retinal neurodegenerative diseases, including hypertensive retinopathy, involve progressive damage to retinal neurons, leading to visual impairment. In this study, we investigated the pathological mechanisms underlying retinal neurodegeneration in spontaneously hypertensive rats (SHR), using Wistar Kyoto (WKY) rats as normotensive controls. We observed that SHR exhibited significantly higher blood pressure and decreased retinal thickness, indicating retinal neurodegeneration. Molecular tests including quantitative real-time polymerase chain reaction, immunoblot, and immunofluorescent staining showed elevated levels of the pro-inflammatory cytokine tumor necrosis factor-α, apoptotic markers (Fas, FasL, caspase-8, active caspase-3, and cleaved poly (ADP-ribose) polymerase), and necroptotic markers (receptor-interacting protein kinase-1 and -3) in SHR retinas. Additionally, we found elevated transforming growth factor-β (TGF-β) levels in the retinal pigment epithelium (RPE) of SHR, with a decrease in lecithin retinol acyltransferase (LRAT), which regulates retinoid metabolism and photoreceptor health. In human RPE cells (ARPE-19), TGF-β administration suppressed mRNA and protein levels of LRAT; and vactosertib, a selective inhibitor of TGF-β receptor kinase type 1, reversed the effect of TGF-β. These findings suggest that hypertension-induced retinal neurodegeneration involves inflammation, apoptosis, necroptosis, and disrupted retinoid metabolism, providing potential therapeutic targets for hypertensive retinopathy.
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