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Sleep disorder significantly disrupts the quality of life for patients. Although it is clinically acknowledged, the fundamental neuropathological mechanisms are still not understood. Recent preclinical research has been directed toward understanding the fundamental mechanisms underlying the sleep deprivation and sleep/wake dysregulation. Sleep disorder is linked to changes in the structure and function of the neural basis of cognition. We reviewed the neural circuits related to sleep disorders, along with alterations in connectivity and brain region functions, based on advancements in electrophysiology and optogenetic/chemogenetic techniques. We subsequently outline the cellular and molecular modifications linked to sleep disorders in preclinical studies, primarily involving changes in neuronal metabolism, electrophysiological activity, synaptic plasticity, and glial cells. Correspondingly, on the basis of the crosstalk between the brain and peripheral organs, we elucidate the underlying mechanisms of the involvement of celiac disease and hepatic disease in the pathogenesis of sleep disorders. In this review, we mainly discussed the pathogenesis at molecular, cellular, and neural circuit levels that contribute to sleep disorder. The review also covered potential strategies for treating sleep disorders and future research avenues.
Liu et al. (Sat,) studied this question.