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Showing 1-28 of 28 results for "O6887" within Papers
R C Lambert et al.
Neuroscience, 57(4), 1027-1038 (1993-12-01)
During suckling, the periodic and synchronous bursting activity of oxytocin neurons has been shown to be facilitated by oxytocin itself, acting via several target sites, including the magnocellular nuclei. To investigate the role of the endogenous oxytocin released within the
Maria Rosaria Melis et al.
Neuroscience letters, 379(1), 59-62 (2005-04-09)
The effect of PD-168077 (N-methyl-4-(2-cyanophenyl)piperazynil-3-methylbenzamide maleate), a selective D4 dopamine receptor agonist, injected into the paraventricular nucleus of the hypothalamus on penile erection was studied in male rats. PD-168077 (1-200 ng) induced penile erection in a dose-dependent manner. The minimal
Travis M Hagedorn et al.
Biology of reproduction, 77(3), 416-424 (2007-04-20)
Experiments were conducted to characterize the effects of oxytocin (OT) and vasopressin (VP) on epithelial cells isolated from human (1 degree HVD) and porcine (1 degree PVD) vas deferens and an immortalized epithelial cell line derived from porcine vas deferens
Toshihiro Nakashima et al.
Neuroscience letters, 321(3), 161-164 (2002-03-07)
Single stress induces long-lasting changes in the hypothalamo-pituitary--adrenal (HPA) axis of adult animals. Selective oxytocin (OXT) receptor antagonist was administrated into the cerebroventricle of male rats to test its influence on plasma adrenocorticotropic hormone (ACTH) responses induced by immobilization stress.
Gina L C Yosten et al.
Peptides, 31(9), 1711-1714 (2010-07-06)
Neuronostatin, a recently discovered peptide derived from the somatostatin preprohormone, significantly inhibited both food and water intake when administered centrally in adult male rats. Because neuronostatin is highly produced in the hypothalamus, an area of the brain through which important
Eduardo M Cafarchio et al.
Frontiers in physiology, 11, 382-382 (2020-05-22)
Urinary bladder dysfunction affects several people worldwide and shows higher prevalence in women. Micturition is dependent on the Barrington's nucleus, pontine urine storage center and periaqueductal gray matter, but other brain stem areas are involved in the bladder regulation. Neurons
M R Melis et al.
Neuroscience letters, 265(3), 171-174 (1999-05-18)
Male rats show four to six penile erection episodes when put for 80 min in the presence of an inaccessible receptive female. These non-contact penile erections were reduced dose-dependently by d(CH2)5Tyr(Me)2-Orn8-vasotocin, a potent and selective oxytocin receptor antagonist, when given
A Benelli et al.
Neuropeptides, 27(4), 245-250 (1994-10-01)
In intact, non-ovariectomized female rats in spontaneous behavioral estrus, the i.c.v. injection of oxytocin significantly increased lordosis quotient and lordosis duration, starting from a dose of 1 ng/rat. On the other hand, the oxytocin antagonist, d(CH2)5Tyr(Me)-[Orn]8-vasotocin, injected at the same
Salvatora Succu et al.
Neuropharmacology, 49(7), 1017-1025 (2005-08-10)
The effect of four peptides derived from the C-terminal portion of rat pro-VGF(556-617) (VGF(556-576), VGF(588-617), VGF(599-617), and VGF(588-597)), on penile erection and nitric oxide production in the paraventricular nucleus of the hypothalamus was studied in male rats after injecting into
M R Melis et al.
Brain research bulletin, 36(6), 527-531 (1995-01-01)
The effect of the central administration of nitroglycerin, a potent organic nitrate vasodilator, on penile erection and yawning was studied in male rats. When given intracerebroventricularly (ICV), nitroglycerin (33-99 micrograms) induced the above responses dose-dependently. The minimal effective dose was
Salvatora Succu et al.
The European journal of neuroscience, 20(11), 3035-3040 (2004-12-08)
The effect of five peptides derived from the C-terminal portion of rat pro-VGF (VGF(577-617), VGF(588-617), VGF(599-617), VGF(556-576) and VGF(588-597)) on penile erection was studied after injection into the hypothalamic paraventricular nucleus of male rats. VGF(577-617), VGF(588-617), VGF(599-617) and, to a
D L Lipschitz et al.
Journal of neuroendocrinology, 15(8), 743-748 (2003-07-02)
There is evidence that the central oxytocin system is activated and undergoes reorganization before parturition. The present study was designed to determine the effects of central oxytocin receptor blockade during late gestation on parturition, pup growth, and oxytocin release during
M Mayntz et al.
Physiology & behavior, 65(1), 151-156 (1998-11-12)
This experiment was to test the hypothesis that suckling behavior in Bos taurus is related to milk ejection. Intra-gland milk transport was manipulated by applying four different treatments to four cow-calf pairs: T1, injection of oxytocin during the post-stimulation period;
M R Melis et al.
European journal of pharmacology, 328(2-3), 115-123 (1997-06-11)
A dose of N-methyl-D-aspartic acid (NMDA, 50 ng) that induces penile erection and yawning when injected into the paraventricular nucleus of the hypothalamus, increased the concentration of NO2- from 1.10 +/- 0.28 microM to 7.32 +/- 1.12 microM and of
T M D'Cunha et al.
Hormones and behavior, 59(1), 14-21 (2010-10-12)
Female rats with maternal experience display a shorter onset of maternal responsiveness compared to those with no prior experience. This phenomenon called 'maternal memory' is critically dependent on the nucleus accumbens (NA) shell. We hypothesized that activation of OT receptors
R E Blackburn et al.
Neuroendocrinology, 56(2), 255-263 (1992-08-01)
Pituitary oxytocin (OT) secretion is inversely related to saline consumption in several experimental models of sodium appetite in rats. Because systemic OT administration does not inhibit sodium appetite, release of OT as a neurotransmitter within the brain, coincident with its
J R Owiny et al.
Biology of reproduction, 47(3), 436-440 (1992-09-01)
Currently there is considerable interest in the actions of oxytocin antagonists on the pregnant myometrium. Few studies have been conducted involving long-term infusions of oxytocin antagonists to late-pregnant experimental animals. We set out to determine whether continuous infusion of an
Atsuko Saito et al.
Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology, 197(4), 329-337 (2011-01-13)
Oxytocin facilitates social recognition in rats and mice, onset of maternal behavior in virgin mice and formation of pair bonds without copulation in prairie voles. However, the relationship between this peptide and paternal behavior in primates remains largely unknown. We
J Hirata et al.
The journal of obstetrics and gynaecology research, 22(5), 497-506 (1996-10-01)
In order to elucidate the roles of inositol trisphosphate (IP3) and oxytocin (OT) receptors in rabbit parturition, the concentration of IP3 induced by OT and the OT receptor levels were determined in rabbit myometria before and after parturition. The effects
Atsuhito Yamagishi et al.
Behavioural brain research, 393, 112790-112790 (2020-07-01)
Empathy toward the distress of others is thought to motivate helping behaviour, in the form of voluntary action to eliminate that distress. Neuropeptide oxytocin is associated with various social cognitive abilities, including empathy and prosocial behaviour. The anterior cingulate cortex
M R Melis et al.
European journal of pharmacology, 294(1), 1-9 (1995-12-27)
In order to provide further support for a role of central nitric oxide as a mediator of penile erection and yawning, the nitric oxide donors sodium nitroprusside, hydroxylamine, isoamyl nitrite and S-nitroso-N-acetyl-penicillamine were injected into the lateral ventricles (i.c.v.) or
R J Windle et al.
The Journal of endocrinology, 152(2), 257-264 (1997-02-01)
The effect of three oxytocin receptor antagonists on the renal actions of oxytocin and vasopressin was investigated in conscious male rats infused with hypotonic saline. Infusion of oxytocin at 100 pg/min produced plasma concentrations of 12.7 +/- 3.3 pmol/l and
Salvatora Succu et al.
Neuropharmacology, 52(3), 1034-1043 (2006-12-14)
The effect of a pro-erectile dose of apomorphine, a mixed dopamine receptor agonist, and of PD-168077 (N-[4-(2-cyanophenyl)piperazin-1-ylmethyl]-3-methylbenzamide maleate), a selective dopamine D4 receptor agonist, injected into the paraventricular nucleus of the hypothalamus on the concentration of extra-cellular dopamine and its
Maria Rosaria Melis et al.
The European journal of neuroscience, 26(4), 1026-1035 (2007-08-04)
The neuropeptide oxytocin (20-100 ng), induces penile erection when injected unilaterally into the caudal but not rostral mesencephalic ventral tegmental area (VTA) of male Sprague-Dawley rats. Such pro-erectile effect started 30 min after treatment and was abolished by the prior
A Anouar et al.
European journal of pharmacology, 308(1), 87-96 (1996-07-11)
Several studies indicate that oxytocin and vasopressin receptors in the human uterus are heterogeneous. We have investigated whether oxytocin and vasopressin bind to separate receptors in the day 21 and day 22 pregnant rat uterus and whether uterine vasopressin receptors
C Vela et al.
Journal of physiology and pharmacology : an official journal of the Polish Physiological Society, 61(1), 59-65 (2010-03-17)
Oxytocin (OT) is a peptide involved in several physiological functions in the central nervous system including central cardiovascular regulation. To clarify the role of endogenous OT in cardiovascular control, one group of anesthetized rats received unilateral microinjections of the OT
R E Blackburn et al.
Proceedings of the National Academy of Sciences of the United States of America, 90(21), 10380-10384 (1993-11-01)
Sodium chloride ingestion is stimulated during conditions of sodium deficiency to maintain body fluid and electrolyte balance. Recent studies have indicated that salt appetite in rats is often inversely related to peripheral and central secretion of the hormone oxytocin (OT).
Z D You et al.
Neuroscience research, 41(2), 143-150 (2001-10-10)
The role of central oxytocin in inhibitory action of lithium on the development of morphine dependence was behavioral investigated in rats. Acute lithium could enhance the morphine-induced analgesia in rats with or without chronic morphine treatment; this effect could be
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