ArticleInternational journal of molecular sciences2023
Downregulation of Sirtuin 1 Does Not Account for the Impaired Long-Term Potentiation in the Prefrontal Cortex of Female APPswe/PS1dE9 Mice Modelling Alzheimer's Disease.
Article in International journal of molecular sciences, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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9 citing papers in PubMed, 8 citations in OpenAlex.
- Genetic Deletion of Adenosine AGlia · 2026Article
- Facilitation of hippocampal long-term potentiation by astrocytic Gq signaling is compromised in an advanced Alzheimer's disease model.Scientific reports · 2026Article
- Review
- The role of n-3-derived specialised pro-resolving mediators (SPMs) in microglial mitochondrial respiration and inflammation resolution in Alzheimer's disease.Molecular neurodegeneration · 2025Review
- Article
- A combination of ΔNeurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2024Article
- GDNF improves the cognitive ability of PD mice by promoting glycosylation and membrane distribution of DAT.Scientific reports · 2024Article
- Modification of astrocytic Cx43 hemichannel activity in animal models of AD: modulation by adenosine ACellular and molecular life sciences : CMLS · 2023Article
- Mechanism Exploration of Amyloid-β-42 Disaggregation by Single-Chain Variable Fragments of Alzheimer's Disease Therapeutic Antibodies.International journal of molecular sciences · 2023Article
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19 authors at 1 institution in 1 country.
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Abstract
Alzheimer's disease (AD), which predominantly affects women, involves at its onset a metabolic deregulation associated with a synaptic failure. Here, we performed a behavioral, neurophysiological and neurochemical characterization of 9-month-old female APPswe/PS1dE9 (APP/PS1) mice as a model of early AD. These animals showed learning and memory deficits in the Morris water maze, increased thigmotaxis and anxiety-like behavior and showed signs of fear generalization. Long-term potentiation (LTP) was decreased in the prefrontal cortex (PFC), but not in the CA1 hippocampus or amygdala. This was associated with a decreased density of sirtuin-1 in cerebrocortical synaptosomes and a decreased density of sirtuin-1 and sestrin-2 in total cerebrocortical extracts, without alterations of sirtuin-3 levels or of synaptic markers (syntaxin, synaptophysin, SNAP25, PSD95). However, activation of sirtuin-1 did not affect or recover PFC-LTP deficit in APP/PS1 female mice; instead, inhibition of sirtuin-1 increased PFC-LTP magnitude. It is concluded that mood and memory dysfunction in 9-month-old female APP/PS1 mice is associated with a parallel decrease in synaptic plasticity and in synaptic sirtuin-1 levels in the prefrontal cortex, although sirtiun1 activation failed to restore abnormal cortical plasticity.
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