.... In the present study, conscious pregnant rats were cannulated to allow blood samples to be taken for measurement of oxytocin secretion in response to intravenous administration of cholecystokinin (CCK). In each rat, we measured the secretory response to CCK before and after administration of norbinaltorphine...

...Yue Xu; Hidesuke Kaji; Yasuhiko Okimura; Toshimitu Matsui; Hiromi Abe; Kazuo Chihara Cholecystokinin (CCK) is detected in pituitary tumors but its role remains unknown. On the hypothesis that CCK may facilitate the cell growth in pituitary tumors, we have examined the effect of CCK on cell growth...

...C.J. Auernhammer; R.L. Riepl; J. Schopohl; P. Lehnert; O.A. Müller; G.K. Stalla Ceruletide, a cholecystokinin-8-like peptide, was recently reported to stimulate ACTH secretion in man. The aim of this study was to investigate the effect of the µ-opiate agonist, loperamide, and the opiate antagonist...

...Aldo E. Calogero; Alfia M.G. Nicolosi; Maria L. Moncada; Francesca Coniglione; Enzo Vicari; Pietro Polosa; Rosario D’Agata Cholecystokinin (CCK), a gastrointestinal (GI) hormone, is also present in structures of the central nervous system such as cortex, hippocampus, amygdala, olfactory tubercle...

...Éva Bíró; Zoltán Sarnyai; Botond Penke; Gyula Szabó; Gyula Telegdy The possible involvement of endogenous corticotropin-releasing factor (CRF) in the anxiogenic and pituitary-adrenal-axis-activating effects of cholecystokinin octapeptide sulfate ester (CCK 8) was investigated in rats. Intracere...

..., neuropeptide Y, substance P, cholecystokinin, and somatostatin were demonstrated to establish synaptic contact with the soma of PR-immunoreactive hypotha-lamic neurons. In colchicine-pretreated animals, all PR-containing neurons in the mediobasal hypothalamus were found to contain immunoreactivity for glutamic...

...Richard A. Siegel; Eva-Maria Düker; Ulrich Pahnke; Wolfgang Wuttke The effects of acute stress exposure upon cholecystokinin (CCK) and substance P (SP) concentrations in discrete hypothalamic regions of the adult male rat brain were studied. Animals were exposed to foot shock stress for periods...

... secretion by systemic injections of cholecystokinin (CCK) and lithium chloride (LiCl) likewise are potentiated by naloxone pretreatment. Moreover, the inhibitory effects of CCK and LiCl on gastric motility and feeding similarly were enhanced by naloxone. Because neurohypophyseal hormone secretion...

...Maya Frankfurt; Richard A. Siegel; Ida Sim; Wolfgang Wuttke Cholecystokinin (CCK) and substance P (SP) were measured in discrete areas of the rat brain at different stages of the estrous cycle. Significantly higher levels of CCK were found in the lateral septum during diestrus as compared...

...Ryuhei Hashimoto; Fukuko Kimura We have shown that the implantation of cholecystokinin octapeptide sulfated form (CCK-8-S) or dopamine (DA) in the medial preoptic area (MPO) in ovariectomized estrogen-primed rats induced an enhancement of the afternoon rise in LH secretion. The present study...

... responses were recorded simultaneously from the above sites in freely behaving rats before and after administration of pentagastrin (100 μ g/kg), secretin 1 μ g/kg or cholecystokinin octapeptide (CCK-OP) (1 μ g/kg) in search of satiety signal. Gastrin and secretin had little effect while it appears that CCK...

... to rapidly modify their neuroendocrine output, depending upon the type of stressors. Indeed, these neurons coexpress other neuropeptides, such as cholecystokinin (CCK), vasopressin (VP), and neurotensin, subserving an eventual complementary function to CRH in the regulation of the pituitary. Unlike in rats...

... to evaluate the extend of the disease, and 90 Y-DOTATOC radiotherapy. GEP NET can, however, express peptide receptors other than somatostatin receptors: insulinomas have more glucagon-like peptide 1 receptors than somatostatin receptors, gut NET (carcinoids) may also express cholecystokinin 2, bombesin...

... binding in the AcbSh and decreases in tyrosine hydroxylase immunoreactivity throughout the striatum in the 24h vs. 24hX group. Furthermore, rats denied access to salt (2hX and 24hX) had higher cholecystokinin-mRNA levels in the ventral tegmental area compared to the 2h and 24h groups, respectively...

...Maria Petersson; Anna-Lena Hulting; Renée Andersson; Kerstin Uvnäs-Moberg The present study was designed to investigate how repeated injections of oxytocin influence plasma levels of vagally controlled hormones such as gastrin, cholecystokinin (CCK), insulin and somatostatin, as well...

...Loretta M. Flanagan-Cato; Jennifer L. King; Jason G. Blechman; Meagan P. O’Brien Recent reports have shown that estradiol increases the hypophagic effect of exogenous cholecystokinin-octapeptide (CCK). CCK is known to increase the expression of Fos, a marker of neuronal activation, in specific...