REM sleep loss increases brain excitability: role of noradrenalin and its mechanism of action

Mallick, Birendra N. ; Singh, Abhishek (2011) REM sleep loss increases brain excitability: role of noradrenalin and its mechanism of action Sleep Medicine Reviews, 15 (3). pp. 165-178. ISSN 1087-0792

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Ever since the discovery of rapid eye movement sleep (REMS), studies have been undertaken to understand its necessity, function and mechanism of action on normal physiological processes as well as in pathological conditions. In this review, first, we briefly surveyed the literature which led us to hypothesise REMS maintains brain excitability. Thereafter, we present evidence from in vivo and in vitro studies tracing behavioural to cellular to molecular pathways showing REMS deprivation (REMSD) increases noradrenalin level in the brain, which stimulates neuronal Na-K ATPase, the key factor for maintaining neuronal excitability, the fundamental property of a neuron for executing brain functions; we also show for the first time the role of glia in maintaining ionic homeostasis in the brain. As REMSD exerts a global effect on most of the physiological processes regulated by the brain, we propose that REMS possibly serves a housekeeping function in the brain. Finally, subject to confirmation from clinical studies, based on the results reviewed here, it is being proposed that the subjects suffering from REMS loss may be effectively treated by reducing either noradrenalin level or Na-K ATPase activity in the brain.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Alpha1 Adrenoceptor; Brain Excitability; Housekeeping Function of the Brain; Na-K ATPase; Noradrenalin; REM Sleep Loss
ID Code:63698
Deposited On:29 Sep 2011 06:23
Last Modified:29 Sep 2011 06:23

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