Structure, biophysics, and circuit function of a “giant” cortical presynaptic terminal

D Vandael, P Jonas - Science, 2024 - science.org
The hippocampal mossy fiber synapse, formed between axons of dentate gyrus granule
cells and dendrites of CA3 pyramidal neurons, is a key synapse in the trisynaptic circuitry of …

Dentate granule cell recruitment of feedforward inhibition governs engram maintenance and remote memory generalization

N Guo, ME Soden, C Herber, MTW Kim, A Besnard… - Nature medicine, 2018 - nature.com
Memories become less precise and generalized over time as memory traces reorganize in
hippocampal–cortical networks. Increased time-dependent loss of memory precision is …

[HTML][HTML] Targeting adult neurogenesis to optimize hippocampal circuits in aging

KM McAvoy, A Sahay - Neurotherapeutics, 2017 - Elsevier
Millions of individuals suffer from age-related cognitive decline, defined by impaired memory
precision. Increased understanding of hippocampal circuit mechanisms underlying memory …

[HTML][HTML] Premature synaptic mitochondrial dysfunction in the hippocampus during aging contributes to memory loss

MA Olesen, AK Torres, C Jara, MP Murphy… - Redox biology, 2020 - Elsevier
Aging is a process characterized by cognitive impairment and mitochondrial dysfunction. In
neurons, these organelles are classified as synaptic and non-synaptic mitochondria …

Synapse type-specific proteomic dissection identifies IgSF8 as a hippocampal CA3 microcircuit organizer

N Apóstolo, SN Smukowski, J Vanderlinden… - Nature …, 2020 - nature.com
Excitatory and inhibitory neurons are connected into microcircuits that generate circuit
output. Central in the hippocampal CA3 microcircuit is the mossy fiber (MF) synapse, which …

Spermidine protects from age-related synaptic alterations at hippocampal mossy fiber-CA3 synapses

M Maglione, G Kochlamazashvili, T Eisenberg… - Scientific Reports, 2019 - nature.com
Aging is associated with functional alterations of synapses thought to contribute to age-
dependent memory impairment (AMI). While therapeutic avenues to protect from AMI are …

NMDA receptor activity during postnatal development determines intrinsic excitability and mossy fiber long‐term potentiation of CA3 pyramidal cells

LA Márquez, E Griego, C López Rubalcava… - …, 2023 - Wiley Online Library
Experimental manipulations that interfere with the functional expression of N‐methyl‐d‐
aspartate receptors (NMDARs) during prenatal neurodevelopment or critical periods of …

[HTML][HTML] Short term plasticity at hippocampal mossy fiber synapses

C Marneffe, A Moreira-de-Sá, S Lecomte, A Erhardt… - Neuroscience, 2024 - Elsevier
Short-term synaptic plasticity refers to the regulation of synapses by their past activity on time
scales of milliseconds to minutes. Hippocampal mossy fiber synapses onto CA3 pyramidal …

MicroRNA-153 impairs presynaptic plasticity by blocking vesicle release following chronic brain hypoperfusion

ML Yan, S Zhang, HM Zhao, SN Xia, Z Jin, Y Xu… - Cell Communication and …, 2020 - Springer
Background Chronic brain hypoperfusion (CBH) is closely related to Alzheimer's disease
(AD) and vascular dementia (VaD). Meanwhile, synaptic pathology plays a prominent role in …

Retrosplenial cortex microglia and perineuronal net densities are associated with memory impairment in aged rhesus macaques

DT Gray, S Khattab, J Meltzer, K McDermott… - Cerebral …, 2023 - academic.oup.com
Synapse loss and altered plasticity are significant contributors to memory loss in aged
individuals. Microglia, the innate immune cells of the brain, play critical roles in maintaining …