ArticleAging cell2024
Genetic context drives age-related disparities in synaptic maintenance and structure across cortical and hippocampal neuronal circuits.
Article in Aging cell, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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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.
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Who cites it
6 citing papers in PubMed, 7 citations in OpenAlex.
- Synaptic aging and neurodegeneration: the role of synaptic vesicle dynamics and neurotransmitter imbalance.Biogerontology · 2026Review
- Consciousness, subjectivity, and aging in western thought.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Review
- Reframing brain aging: neuroinflammation as an interconnected network process.Frontiers in aging · 2026Review
- Genetic context modulates aging and degeneration in the murine retina.Molecular neurodegeneration · 2025Article
- Genetic context modulates aging and degeneration in the murine retina.bioRxiv : the preprint server for biology · 2024Article
- Genetic context drives age-related disparities in synaptic maintenance and structure across cortical and hippocampal neuronal circuits.Aging cell · 2024Article
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4 authors at 1 institution in 1 country.
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Abstract
The disconnection of neuronal circuitry through synaptic loss is presumed to be a major driver of age-related cognitive decline. Age-related cognitive decline is heterogeneous, yet whether genetic mechanisms differentiate successful from unsuccessful cognitive decline through maintenance or vulnerability of synaptic connections remains unknown. Previous work using rodent and primate models leveraged various techniques to imply that age-related synaptic loss is widespread on pyramidal cells in prefrontal cortex (PFC) circuits but absent on those in area CA1 of the hippocampus. Here, we examined the effect of aging on synapses on projection neurons forming a hippocampal-cortico-thalamic circuit important for spatial working memory tasks from two genetically distinct mouse strains that exhibit susceptibility (C57BL/6J) or resistance (PWK/PhJ) to cognitive decline during aging. Across both strains, synapse density on CA1-to-PFC projection neurons appeared completely intact with age. In contrast, we found synapse loss on PFC-to-nucleus reuniens (RE) projection neurons from aged C57BL/6J but not PWK/PhJ mice. Moreover, synapses from aged PWK/PhJ mice but not from C57BL/6J exhibited altered morphologies that suggest increased efficiency to drive depolarization in the parent dendrite. Our findings suggest resistance to age-related cognitive decline results in part by age-related synaptic adaptations, and identification of these mechanisms in PWK/PhJ mice could uncover new therapeutic targets for promoting successful cognitive aging and extending human health span.
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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.