ArticleActa neuropathologica communications2023
Asymmetric dysregulation of glutamate dynamics across the synaptic cleft in a mouse model of Alzheimer's disease.
Article in Acta neuropathologica communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
13 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.
- A systematic review of the neuropathology and memory decline induced by monosodium glutamate in the Alzheimer's disease-like animal model.Frontiers in pharmacology · 2023Pooled it
- Serum metabolomic profiling identifies a biomarker panel associated with age-related hearing loss.Biochemistry and biophysics reports · 2026Article
- Perisynaptic Astrocytic Processes as Communication Hubs and Early Sites of Dysfunction.The Neuroscientist : a review journal bringing neurobiology, neurology and psychiatry · 2026Review
- Impairment of hippocampal long-term potentiation by soluble amyloid-β oligomers is mediated by glutamate transporter 1 expressed in neurons.Neural regeneration research · 2026Article
- The multiple scales of astrocytic functional units.Nature neuroscience · 2026Review
- Glutamate indicators with increased sensitivity and tailored deactivation rates.Nature methods · 2026Article
- Atypical plume-like events contribute to glutamate accumulation in metabolic stress conditions.iScience · 2025Article
- The Glutamate/GABA-Glutamine Cycle: Insights, Updates, and Advances.Journal of neurochemistry · 2025Review
- An Expanded Narrative Review of Neurotransmitters on Alzheimer's Disease: The Role of Therapeutic Interventions on Neurotransmission.Molecular neurobiology · 2025Review
- Glutamate and excitotoxicity in central nervous system disorders: ionotropic glutamate receptors as a target for neuroprotection.Neuroprotection (Chichester, England) · 2024Review
- Mechanisms of glutamate metabolic function and dysfunction in vascular dementia.Neuroprotection (Chichester, England) · 2024Review
- Gut microbiota metabolites: potential therapeutic targets for Alzheimer's disease?Frontiers in pharmacology · 2024Review
- Astrocytic modulation of neuronal signalling.Frontiers in network physiology · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Most research on glutamate spillover focuses on the deleterious consequences of postsynaptic glutamate receptor overactivation. However, two decades ago, it was noted that the glial coverage of hippocampal synapses is asymmetric: astrocytic coverage of postsynaptic sites exceeds coverage of presynaptic sites by a factor of four. The fundamental relevance of this glial asymmetry remains poorly understood. Here, we used the glutamate biosensor iGluSnFR, and restricted its expression to either CA3 or CA1 neurons to visualize glutamate dynamics at pre- and postsynaptic microenvironments, respectively. We demonstrate that inhibition of the primarily astrocytic glutamate transporter-1 (GLT-1) slows glutamate clearance to a greater extent at presynaptic compared to postsynaptic membranes. GLT-1 expression was reduced early in a mouse model of AD, resulting in slower glutamate clearance rates at presynaptic but not postsynaptic membranes that opposed presynaptic short-term plasticity. Overall, our data demonstrate that the presynapse is particularly vulnerable to GLT-1 dysfunction and may have implications for presynaptic impairments in a variety of brain diseases.
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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.