Locus coeruleus;
Melanin-concentrating hormone;
Noradrenaline;
REM sleep;
Sleep;
DORSAL RAPHE;
NEURONS;
PROJECTIONS;
BEHAVIORS;
GENESIS;
GABA;
D O I:
10.1016/j.pnpbp.2014.09.003
中图分类号:
R74 [神经病学与精神病学];
学科分类号:
摘要:
A study was carried out on the effects of unilateral microinjection of melanin-concentrating hormone (MCH) into the right locus coeruleus (LC) on the sleep-wake cycle in rats prepared for chronic sleep recordings. MCH 200 ng significantly augmented rapid-eye-movement sleep (REMS) time during the first, second and third 2-h of recording. Furthermore, MCH 100 ng induced a significant increase of REMS during the first 2-h period after treatment. The increment of the behavioral state was related to a greater number of REMS episodes. It is suggested that MCH deactivation of noradrenergic neurons located in the LC facilitates the occurrence of REMS. (C) 2014 Elsevier Inc. All rights reserved.