ArticleInvestigative ophthalmology & visual science2016
Lack of R-Ras Leads to Increased Vascular Permeability in Ischemic Retinopathy.
Article in Investigative ophthalmology & visual science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
What it found
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The trial behind it
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Who cites it
22 citing papers in PubMed, 34 citations in OpenAlex.
- Spatial transcriptomics reveals regionally altered gene expression that drives retinal degeneration.Communications biology · 2025Article
- Glucose-Regulated Protein 78, via Releasing β-Catenin from Adherens Junctions, Facilitates Its Interaction with STAT3 in Mediating Retinal Neovascularization.The American journal of pathology · 2024Article
- Genome-wide association analyses identify distinct genetic architectures for age-related macular degeneration across ancestries.Nature genetics · 2024Article
- Review
- Akt3 activation by R-Ras in an endothelial cell enforces quiescence and barrier stability of neighboring endothelial cells via Jagged1.Cell reports · 2024Article
- Requirement of Site-Specific Tyrosine Phosphorylation of Cortactin in Retinal Neovascularization and Vascular Leakage.Arteriosclerosis, thrombosis, and vascular biology · 2024Article
- Lung endothelial cells regulate pulmonary fibrosis through FOXF1/R-Ras signaling.Nature communications · 2023Article
- Proteomics Analysis of R-Ras Deficiency in Oxygen Induced Retinopathy.International journal of molecular sciences · 2023Article
- Selective Targeting and Tissue Penetration to the Retina by a Systemically Administered Vascular Homing Peptide in Oxygen Induced Retinopathy (OIR).Pharmaceutics · 2021Article
- The Role of R-Ras Proteins in Normal and Pathologic Migration and Morphologic Change.The American journal of pathology · 2021Review
- Review
- Pathological Angiogenesis Requires Syndecan-4 for Efficient VEGFA-Induced VE-Cadherin Internalization.Arteriosclerosis, thrombosis, and vascular biology · 2021Article
- High Endothelial Venules Accelerate Naive T Cell Recruitment by Tumor Necrosis Factor-Mediated R-Ras Upregulation.The American journal of pathology · 2021Article
- R-Ras Deficiency in Pericytes Causes Frequent Microphthalmia and Perturbs Retinal Vascular Development.Journal of vascular research · 2021Article
- Prostaglandin E2 breaks down pericyte-endothelial cell interaction via EP1 and EP4-dependent downregulation of pericyte N-cadherin, connexin-43, and R-Ras.Scientific reports · 2020Article
- Exploration of Oxygen-Induced Retinopathy Model to Discover New Therapeutic Drug Targets in Retinopathies.Frontiers in pharmacology · 2020Review
- Cysteine-based regulation of redox-sensitive Ras small GTPases.Redox biology · 2019Review
- Retinal Vasculature in Development and Diseases.Annual review of vision science · 2018Review
- Prolonged activation of cAMP signaling leads to endothelial barrier disruption via transcriptional repression of RRAS.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2018Article
- Animal models of ocular angiogenesis: from development to pathologies.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2017Review
Corrections and comments
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Authors and funding
11 authors at 6 institutions in 2 countries.
Funding
Abstract
purposeThe role of R-Ras in retinal angiogenesis and vascular permeability was evaluated in an oxygen-induced retinopathy (OIR) model using R-Ras knockout (KO) mice and in human diabetic neovascular membranes.
methodsMice deficient for R-Ras and their wild-type (WT) littermates were subjected to 75% oxygen from postnatal day 7 (P7) to P12 and then returned to room air. At P17 retinal vascularization was examined from whole mounts, and retinal vascular permeability was studied using Miles assay. Real-time RT-PCR, Western blotting, and immunohistochemistry were used to assess the expression of R-Ras in retina during development or in the OIR model. The degree of pericyte coverage and vascular endothelial (VE)-cadherin expression on WT and R-Ras KO retinal blood vessels was quantified using confocal microscopy. The correlation of R-Ras with vascular endothelial growth factor receptor 2 (VEGFR2) and human serum albumin on human proliferative diabetic retinopathy membranes was assessed using immunohistochemistry.
resultsIn retina, R-Ras expression was mostly restricted to the vasculature. Retinal vessels in the R-Ras KO mice were significantly more permeable than WT controls in the OIR model. A significant reduction in the direct physical contact between pericytes and blood vessel endothelium as well as reduced VE-cadherin immunostaining was found in R-Ras-deficient mice. In human proliferative diabetic retinopathy neovascular membranes, R-Ras expression negatively correlated with increased vascular leakage and expression of VEGFR2, a marker of blood vessel immaturity.
conclusionsOur results suggest that R-Ras has a role in controlling retinal vessel maturation and stabilization in ischemic retinopathy and provides a potential target for pharmacologic manipulation to treat diabetic retinopathy.
Identifiers
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.