[The effect of dopaminergic nigrostriatal system on sleep deprivation in rats].
The analysis of the electrophysiological features of sleep-wakefulness cycle in Wistar rats for 9h after a 6h sleep deprivation was carried out. The delay of sleep rebound (since 2.5-3 h after deprivation) was found in the form of moderate increasing of slow-wave sleep and fast-wave sleep phases. According to these sleep-wakefulness cycle changes, a quantitative immunohistochemical study of tyrosine hydroxylase: a key enzyme of dopamine synthesis--and D1 and D2 receptors in nigro-striatal projections has been performed. After sleep, an elevation of D1 receptors immunoreactivity in caudate nucleus and reduction of tyrosine hydroxylase immunoreactivity in compact part of substancia nigra was found. After postdeprivation sleep, a decrease of D1 receptors immunoreactivity and increase of D2 receptors immunoreactivity in caudate nucleus together some increase of tyrosine hydroxilase immunoreactivity in substancia nigra compacta has been observed. These data can testify about active role of dopaminergic nigrostriatal system which provide at the same time with another neurotransmitters of the central nervous system the telencephalo-diencephalic interaction in sleep-wakefulness-sleep cycle.
Oganesian
G A
GA
Aristakesian
E A
EA
Romanova
I V
IV
Belova
V A
VA
Artamokhina
I V
IV
D000818:Animals; D003342:Corpus Striatum / Q000737:chemistry / Q000503:physiopathology*; D004594:Electrophysiology; D007150:Immunohistochemistry; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D017447:Receptors, Dopamine D1 / Q000032:analysis / Q000378:metabolism*; D017448:Receptors, Dopamine D2 / Q000032:analysis / Q000378:metabolism*; D012892:Sleep Deprivation / Q000503:physiopathology*; D013378:Substantia Nigra / Q000737:chemistry / Q000503:physiopathology*; D014446:Tyrosine 3-Monooxygenase / Q000032:analysis / Q000378:metabolism; D014851:Wakefulness
D017447:Receptors, Dopamine D1; D017448:Receptors, Dopamine D2; D014446:Tyrosine 3-Monooxygenase