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Ghosh, Ishan; Liu, Celina S.; Swardfager, Walter; Lanctôt, Krista L.; Anderson, Nicole D.
Molecular and cellular neuroscience, December 2021, 2021-12-00, Letnik: 117Journal Article
Disruptions to the central excitatory-inhibitory (E/I) balance are thought to be related to aging and underlie a host of neural pathologies, including Alzheimer's disease. Aging may induce an increase in excitatory signaling, causing an E/I imbalance, which has been linked to shorter lifespans in mice, flies, and worms. In humans, extended longevity correlates to greater repression of genes involved in excitatory neurotransmission. The repressor element-1 silencing transcription factor (REST) is a master regulator in neural cells and is believed to be upregulated with senescent stimuli, whereupon it counters hyperexcitability, insulin/insulin-like signaling pathway activity, oxidative stress, and neurodegeneration. This review examines the putative mechanisms that distort the E/I balance with aging and neurodegeneration, and the putative roles of REST in maintaining neuronal homeostasis. •Senescence facilitates REST nuclear-entry to help enforce the E/I balance.•Conditions in adulthood that impair REST increase the risk of neurodegeneration.•Aging associated neural metabolism and the E/I balance are intrinsically connected.•E/I imbalances are key mechanisms of Alzheimer’s disease pathology.
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in: SICRIS
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