Vasopressin as a Possible Link between Sleep-Disturbances and Memory Problems

Abstract

Normal biological rhythms, including sleep, are very important for a healthy life and their disturbance may induce—among other issues—memory impairment, which is a key problem of many psychiatric pathologies. The major brain center of circadian regulation is the suprachiasmatic nucleus, and vasopressin (AVP), which is one of its main neurotransmitters, also plays a key role in memory formation. In this review paper, we aimed to summarize our knowledge on the vasopressinergic connection between sleep and memory with the help of the AVP-deficient Brattleboro rat strain. These animals have EEG disturbances with reduced sleep and impaired memory-boosting theta oscillation and show memory impairment in parallel. Based upon human and animal data measuring AVP levels, haplotypes, and the administration of AVP or its agonist or antagonist via different routes (subcutaneous, intraperitoneal, intracerebroventricular, or intranasal), V1a receptors (especially of hippocampal origin) were implicated in the sleep-memory interaction. All in all, the presented data confirm the possible connective role of AVP between biological rhythms and memory formation, thus, supporting the importance of AVP in several psychopathological conditions.

A dopamine D1-like receptor-specific agonist improves the survival of septic mice

“… 47 AVP has also been implicated in sleep disturbances or insomnia. 48 Therefore, the effects of cytokines on sleep are controversial. In this study, SKF-treated septic mice displayed a prolonged sleeping period in comparison to Vcl/CLP mice, suggesting that the prevention of the expression of CRH and AVP by SKF strengthens the sleep-promoting effects of TNF-α and IL-1β.…”