ArticleFrontiers in immunology2019
Microglia Mediate Synaptic Material Clearance at the Early Stage of Rats With Retinitis Pigmentosa.
Article in Frontiers in immunology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.
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Who cites it
23 citing papers in PubMed, 30 citations in OpenAlex.
- Retinitis pigmentosa elicits neurodegeneration within the visual pathway in REEP6 knockout mice.Neural regeneration research · 2026Article
- Photoreceptor outer segments promote the accumulation of lipid droplets in microglia by reprogramming lipid metabolism.Frontiers in immunology · 2026Article
- Crosstalk Between Neuronal and Glial Cells in Diabetic Retinopathy: Mechanisms and Implications for Neurodegeneration.Molecular neurobiology · 2025Review
- Microglia target synaptic sites early during excitatory circuit disassembly in neurodegeneration.iScience · 2025Article
- Microglia-orchestrated neuroinflammation and synaptic remodeling: roles of pro-inflammatory cytokines and receptors in neurodegeneration.Frontiers in cellular neuroscience · 2025Review
- IFNγ preconditioning improves neuroprotection of MSC-derived vesicles on injured retinal ganglion cells by suppressing microglia activation via miRNA-dependent ribosome activity.Extracellular vesicles and circulating nucleic acids · 2025Article
- Exosomes derived from IFNγ-stimulated mesenchymal stem cells protect photoreceptors in RCS rats by restoring immune homeostasis through tsRNAs.Cell communication and signaling : CCS · 2024Article
- A novel GCaMP6f-RCS rat model for studying electrical stimulation in the degenerated retina.Frontiers in cell and developmental biology · 2024Article
- Article
- Endothelial Toll-like receptor 4 is required for microglia activation in the murine retina after systemic lipopolysaccharide exposure.Journal of neuroinflammation · 2023Article
- Repopulated retinal microglia promote Müller glia reprogramming and preserve visual function in retinal degenerative mice.Theranostics · 2023Article
- Microglia: Friends or Foes in Glaucoma? A Developmental Perspective.Stem cells translational medicine · 2022Review
- Colony-stimulating factor 1 receptor signaling in the central nervous system and the potential of its pharmacological inhibitors to halt the progression of neurological disorders.Inflammopharmacology · 2022Review
- More than meets the eye: The role of microglia in healthy and diseased retina.Frontiers in immunology · 2022Review
- The roles of microglia in neural remodeling during retinal degeneration.Histology and histopathology · 2022Review
- Disease-associated microglial activation prevents photoreceptor degeneration by suppressing the accumulation of cell debris and neutrophils in degenerating rat retinas.Theranostics · 2022Article
- Activated microglia-induced neuroinflammatory cytokines lead to photoreceptor apoptosis in Aβ-injected mice.Journal of molecular medicine (Berlin, Germany) · 2021Article
- Engulfed by Glia: Glial Pruning in Development, Function, and Injury across Species.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Review
- Synaptic changes and the response of microglia in a light-induced photoreceptor degeneration model.Molecular vision · 2021Article
- Aging with Toxoplasma gondii results in pathogen clearance, resolution of inflammation, and minimal consequences to learning and memory.Scientific reports · 2020Article
Corrections and comments
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Resident microglia are the main immune cells in the retina and play a key role in the pathogenesis of retinitis pigmentosa (RP). Many previous studies on the roles of microglia mainly focused on the neurotoxicity or neuroprotection of photoreceptors, while their contributions to synaptic remodeling of neuronal circuits in the retina of early RP remained unclarified. In the present study, we used Royal College of Surgeons (RCS) rats, a classic RP model characterized by progressive microglia activation and synapse loss, to investigate the constitutive effects of microglia on the synaptic lesions and ectopic neuritogenesis. Rod degeneration resulted in synapse disruption and loss in the outer plexiform layer (OPL) at the early stage of RP. Coincidentally, the resident microglia in the OPL increased phagocytosis and mainly engaged in phagocytic engulfment of postsynaptic mGluR6 of rod bipolar cells (RBCs). Complement pathway might be involved in clearance of postsynaptic elements of RBCs by microglia. We pharmacologically deleted microglia using a CSF1 receptor (CSF1R) inhibitor to confirm this finding, and found that it caused the accumulation of postsynaptic mGluR6 levels and increased the number and length of ectopic dendrites in the RBCs. Interestingly, the numbers of presynaptic sites expressing CtBP2 and colocalized puncta in the OPL of RCS rats were not affected by microglia elimination. However, sustained microglial depletion led to progressive functional deterioration in the retinal responses to light in RCS rats. Based on our results, microglia mediated the remodeling of RBCs by phagocytosing postsynaptic materials and inhibiting ectopic neuritogenesis, contributing to delay the deterioration of vision at the early stage of RP.
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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.