Chemical sensitivity of neurons in suprachiasmatic nuclei of rat hypothalamus
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چکیده
منابع مشابه
Effect of lactation on the expression of gonadotropin-inhibitory hormone in dorsomedial and paraventricular nuclei of the rat hypothalamus
Introduction: Gonadotropin inhibitory hormone (GnIH) is believed to be an inhibitor of gonadotropin releasing hormone (GnRH) secretion. The role of GnIH in lactational inhibition of gonadotropin secretion is not well known therefore, the aim of the present study was to evaluate the effect of lactation on expression of GnIH in these nuclei of lactating and non-lactating rats. Methods: Ten po...
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Single neurons in the suprachiasmatic nucleus (SCN) and surrounding hypothalamic nuclei of the rat were characterized functionally and pharmacologically. Photically responsive neurons of the SCN typically exhibited a similar response to intravenous nicotine. The response to nicotine was antagonized by the nicotinic blocker, mecamylamine. Nicotinic blockade either eliminated or even reversed the...
متن کاملElectrical properties and activities of single neurons in rat suprachiasmatic nuclei.
The suprachiasmatic nuclei (SCN) of the hypothalamus are known to function as a center for the regulation of mammalian circadian rhythms (Inouye and Kawamura, 1979, 1982; Rusak and Zucker, 1979). Elimination of the circadian rhythms for drinking, activity, sleep and tempera ture was produced by ablation of the SCN in the brain (Richter, 1967; Moore and Eichler, 1972; Stephan and Nunez, 1977). R...
متن کاملEffect of D-glucose injection into ventromedial and lateral nuclei of hypothalamus on pentagastrin-induced gastric secretion in rat
It has been shown that those factors which affect gastric acid secretion through the ventromedial and lateral nuclei of hypothalamus, can significantly alter centrally-mediated secretion. There is much evidence that glucose is among these factors that through a central mechanism can decrease induced acid secretion. It appears that this effect is mediated through glucose-sensitive neurons within...
متن کاملDaily profiles of arginine vasopressin mRNA in the suprachiasmatic, supraoptic and paraventricular nuclei of the rat hypothalamus under various photoperiods.
Daily rhythm of arginine vasopressin (AVP) mRNA levels in the suprachiasmatic nucleus (SCN) of rats maintained under a short, LD 8:16 photoperiod differed from that of rats maintained under a long, LD 16:8 photoperiod: under the short photoperiod the morning AVP rise occurred significantly later than under the long one. Daily profiles of AVP mRNA in the supraoptic and paraventricular nuclei wer...
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ژورنال
عنوان ژورنال: Japanese Journal of Pharmacology
سال: 1976
ISSN: 0021-5198
DOI: 10.1016/s0021-5198(19)66015-4