EFFECTS OF SEROTONERGIC SYSTEM ON THE SLEEPING TIME AND EEG IN RATS

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ALAEI H.

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Journal: Tehran University Medical Journal Year:2001 | Volume:59 | Issue:3 Page(s): 8-17

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Title

EFFECTS OF SEROTONERGIC SYSTEM ON THE SLEEPING TIME AND EEG IN RATS

Author(s)

ALAEI H. | Issue Writer Certificate

Keywords

5-HYDROXYTRYPTOPHAN (5-HTP)Q4

PARACHLOROPHENYALANIN (P-CPA)Q4

SEROTONINQ4

DIAZEPAMQ4

SEROTONERGIC SYSTEMQ4

Abstract

The phenomenon of sleep is an active both nervous and biologic rhythm, which is under influence of neurotransmitters of central Nervous system. In this study, the influence of SEROTONERGIC SYSTEM on sleeping time have been assessed by agonist-antagonist drugs using two methods of induction and non-induction behavioral and electrophysiology. The method used for measurement of total sleeping time was Angle method. For assessment of drugs impact on brain waves, after opening two holes in frontal and temporal regions, two non-polarized silvery electrodes were fixed in above regions and was connected to physiograph and computer by linkers for waves analysis. Injection intra-ventriculary is done by stereotax apparatus. Results indicate that DIAZEPAM (2.5 mg/kg) increases sleeping time in two stages of induction and non-induction (P<0.01). 5-HTP (15, 45 mg/kg) increases dose-dependence sleeping time. P-CPA (150, 300 mg/kg) shows biphasic influence on sleeping time. The 300 mg/kg dose of p-CPA reduces sleeping time while 150 mg/kg dose inverts sleeping time (P<0.05). interferential affects of drugs with (5-HTP) 45 mg/kg and p-CPA (300 mg/kg) doses are similar to control groups. Injection of 5-HTP inverts p-CPA affect. Intra-ventriculary of 5-HTP in 150 µg/kg and 300 µg/kg doses, decreases frequency of delta waves and significantly increases the frequencies of other waves but conversely, 500 µg/kg decreases it. Due to finding of this study, interferential affects of agonist-antagonist of 5-HTP, can not invert p-CPA affect. Supported by GABA affects, DIAZEPAM induces its inhibitory affect in pre-synaptic and pos-synaptic membrane through ascending reticular both systems and blocking stimulation of brain cortical and limbic system. Affects of two other drugs on sleeping time and brain waves are probably caused by increment of released SEROTONIN in pre-synaptic neurons. Although their interferential affects with other neurotransmitter system should be considered as well.

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APA: Copy

ALAEI, H.. (2001). EFFECTS OF SEROTONERGIC SYSTEM ON THE SLEEPING TIME AND EEG IN RATS. TEHRAN UNIVERSITY MEDICAL JOURNAL (TUMJ), 59(3), 8-17. SID. https://sid.ir/paper/38659/en

Vancouver: Copy

ALAEI H.. EFFECTS OF SEROTONERGIC SYSTEM ON THE SLEEPING TIME AND EEG IN RATS. TEHRAN UNIVERSITY MEDICAL JOURNAL (TUMJ)[Internet]. 2001;59(3):8-17. Available from: https://sid.ir/paper/38659/en

IEEE: Copy

H. ALAEI, “EFFECTS OF SEROTONERGIC SYSTEM ON THE SLEEPING TIME AND EEG IN RATS,” TEHRAN UNIVERSITY MEDICAL JOURNAL (TUMJ), vol. 59, no. 3, pp. 8–17, 2001, [Online]. Available: https://sid.ir/paper/38659/en

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