Cellular and Network Mechanisms Underlying Memory Impairment Induced by Amyloid β Protein
Abstract
It has long been known that amyloid ß protein (Aß) plays a key role in Alzheimer's Disease (AD) and in Down Syndrome cognitive decline. Recent findings have shown that soluble forms of Aß (mostly Aß oligomers; Aßo), rather than insoluble forms (fibrils and plaques), are associated with memory impairments in early stages of AD. Since synaptic plasticity and oscillatory network activity are required for memory formation, consolidation and retrieval, numerous attempts have been made to establish whether or not Aßo-induced alterations in synaptic plasticity and oscillatory network activity cause memory impairment. Despite a wealth of uncorrelated experimental evidence, such a relationship remains elusive. Furthermore, the specific cellular mechanisms underlying these disruptions remain to be determined. This review will discuss recent findings about the cellular and network mechanisms involved in Aßo-induced alterations of network oscillations and synaptic plasticity that could be responsible for the learning and memory impairments observed in early AD. Additionally, we will review some of the signal transduction pathways involved in these deleterious effects, which are revealing promising therapeutic targets to ease Aßo-induced brain dysfunction and treat AD.
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Studies have reported a rise of oxidative stress markers such as lipid peroxidation, protein oxidation, and reactive oxygen species in brain tissue of AD patients.
“there are studies that heretofore have reported the rise of oxidative stress markers in the brain tissue of AD patients, parameters such as lipid peroxidation, protein oxidation, and formation of reactive oxygen species (ROS) (5,6).”
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- Authors
- Salgado-Puga, K., & Pena-Ortega, F.
- ORCID
- Salgado-Puga, Karla
- Venue
- Protein & Peptide Letters
- Publisher
- Bentham Science Publishers Ltd.
- Published
- 2015-04-09
- Volume
- 22
- Issue
- 4
- Pages
- 303-321
- ISSN
- 0929-8665 (ISSN-L)
- OpenAlex
- W2041536525
- Cited by
- 27
- References
- 0
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 4 · 2021: 1 · 2020: 1 · 2019: 2 · 2017: 3 · 2016: 5 · 2015: 3
- FWCI
- 2.70
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Protein and Peptide Letters (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Keywords
- amyloid-beta oligomers, Alzheimer's disease, memory impairment, synaptic plasticity, neural oscillations, network oscillations, Down syndrome, signaling pathways, therapeutic target, early Alzheimer's disease
- MeSH terms
- Alzheimer Disease, Animals, Humans, Memory Disorders, Neuronal Plasticity, Signal Transduction, Amyloid beta-Peptides, Long-Term Synaptic Depression
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