Abstract
Sleep disorders are prevalent neurological conditions linked to neurocognitive impairments. Understanding the neuroplasticity changes in the hippocampus, which plays a central role in regulating neurocognitive function, is crucial in the context of sleep disorders. However, research on neurodegenerative disorders and the influence of sleep disorders on hippocampal neuroplasticity remains largely unclear. Therefore, this review aims to highlight the latest advancements regarding hippocampal neuroplasticity and functional changes during sleep disorders, drawing insights from clinical and preclinical research involving sleep-deprived animal models. These articles were gathered through comprehensive literature searches across databases, including Google Scholar, PubMed, Web of Science, and Scopus. Maternal sleep deprivation has been observed to cause neurocognitive impairment in offspring, along with changes in protein expression levels associated with neuroplasticity. Similarly, sleep deprivation in adult mice has been shown to affect several cognitive functions and fear extinction without influencing the acquisition of fear conditioning. While mechanistic research on neurocognitive dysfunction induced by maternal and adult sleep deprivation is limited, it suggests the involvement of several signaling pathways, including neurotrophic factors, synaptic proteins, and inflammatory molecules, which are triggered by sleep deprivation. Further studies are needed to clarify the mechanistic pathways underlying hippocampal dysfunction and synaptic alterations associated with sleep disturbances.
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