The secretory activity of the tuberoinfundibular dopaminergic neurons is modulated by the thyroid status in the adult rat: consequence on prolactin secretion.

abstract：:His-dTrp-Ala-Trp-dPhe,Lys-NH2(GHRP-6) is a synthetic compound that releases GH in a dose-response and specific manner in several species and that may well be related to an endogenous compound of similar structure. The aim of this study was to investigate the in vivo GH responses to GHRP-6 in pentobarbital anesthetized...

journal_title：Neuroendocrinology

authors： Mallo F,Alvarez CV,Benitez L,Burguera B,Coya R,Casanueva FF,Dieguez C

更新日期：1993-01-01 00:00:00

abstract：:Tyrosine hydroxylase activity in noradrenergic neurons of the locus coeruleus was found to rise in bilaterally adrenalectomized adult mice, with maximum increase of the enzyme activity (52% above control) occurring 7 days after the surgery. No such increase of tyrosine hydroxylase activity was found in dopaminergic ne...

journal_title：Neuroendocrinology

authors： Markey KA,Sze PY

更新日期：1984-04-01 00:00:00

abstract：:Thymic neuroendocrine neoplasms are rare tumours, but their management can often be highly problematic. While previously assumed to be essentially variants of bronchopulmonary (lung) carcinoids, they are generally more aggressive and more difficult to treat. Some 25% are associated with multiple endocrine neoplasia-1,...

journal_title：Neuroendocrinology

authors： Jia R,Sulentic P,Xu JM,Grossman AB

更新日期：2017-01-01 00:00:00

abstract：:Acute immobilization stress results in changes in the concentration of both dopamine and noradrenaline in specific forebrain limbic system areas, whereas the adrenaline levels remain unchanged. Changes in dopamine concentrations are more restricted than those in noradrenaline concentrations. Dopamine levels are increa...

journal_title：Neuroendocrinology

authors： Saavedra JM

更新日期：1982-11-01 00:00:00

abstract：:The expression of the mouse metallothionein-I (mMT) promoter/human growth hormone (hGH) fusion gene in transgenic mice leads to female sterility and major alterations in the function of the hypothalamic-adenohypophyseal system. These alterations include increases in median-eminence norepinephrine turnover and plasma L...

journal_title：Neuroendocrinology

authors： Steger RW,Bartke A,Parkening TA,Collins T,Buonomo FC,Tang KC,Wagner TE,Yun JS

更新日期：1991-04-01 00:00:00

abstract：:Prolactin (PRL) secretion in the female rat is regulated by an endogenous stimulatory rhythm (ESR), which is normally under the tonic inhibition of dopamine (DA). The ESR consists of a nocturnal (N) component which peaks at approximately 03.00 h, and a diurnal (D) component which peaks at approximately 17.00 h. This E...

journal_title：Neuroendocrinology

authors： Arey BJ,Kanyicska B,Freeman ME

更新日期：1991-01-01 00:00:00

abstract：:Although previously considered rare, recent epidemiological studies have revealed that the incidence (3.6/100,000) and prevalence (35/100,000) of gastroenteropancreatic neuroendocrine tumors (GEP-NETs) has increased over the past few decades. Despite the progress in the understanding of GEP-NET molecular biology, ther...

journal_title：Neuroendocrinology

authors： Cigrovski Berkovic M,Cacev T,Catela Ivkovic T,Zjacic-Rotkvic V,Kapitanovic S

更新日期：2014-01-01 00:00:00

abstract：:The purpose of the present study was to examine whether repetitive intravenous injections of L-glutamic acid (Glu), like those of N-methyl-D,L-aspartic acid (NMA), are able to elicit a sustained train of gonadotropin releasing hormone (GnRH) discharges from the hypothalamus of the prepubertal male monkey. In order to ...

journal_title：Neuroendocrinology

authors： Medhamurthy R,Gay VL,Plant TM

更新日期：1992-06-01 00:00:00

abstract：:Studies were undertaken to characterize the secretion of corticotropin-releasing factor (CRF) and arginine vasopressin (AVP) into the hypophysial-portal circulation of the conscious sheep. In addition, we examined the temporal relationship between the secretion of these two hypothalamic peptides and the secretion of t...

journal_title：Neuroendocrinology

authors： Engler D,Pham T,Fullerton MJ,Ooi G,Funder JW,Clarke IJ

更新日期：1989-04-01 00:00:00

abstract：BACKGROUND:Type I gastric carcinoids (TIGCs) are neuroendocrine neoplasms arising from enterochromaffin-like cells in atrophic body gastritis. Data regarding their evolution in prospective series are scarce, thus treatment and follow-up are not codified. Our aim was to evaluate clinical outcome and recurrence in TIGCs ...

journal_title：Neuroendocrinology

authors： Merola E,Sbrozzi-Vanni A,Panzuto F,D'Ambra G,Di Giulio E,Pilozzi E,Capurso G,Lahner E,Bordi C,Annibale B,Delle Fave G

更新日期：2012-01-01 00:00:00

abstract：:To elucidate the mechanisms of the impaired pituitary response to growth hormone-releasing hormone (GHRH) in aged animals on a cellular basis, a reverse hemolytic plaque assay was performed on dispersed pituitary cells from young (8-month-old) and old (26-month-old) male F344 rats. The proportion of growth hormone (GH...

journal_title：Neuroendocrinology

authors： Shimokawa I,Higami Y,Okimoto T,Ikeda T

更新日期：1994-12-01 00:00:00

abstract：:In addition to the magnocellular hypothalamic nuclei, arginine vasopressin (AVP)-containing neurons have also been identified in limbic structures, including the hippocampus and amygdala. In the present study, we compared the qualitative properties of the in vitro release of AVP from the dissected hypothalamus with th...

journal_title：Neuroendocrinology

authors： Raber J,Pich EM,Koob GF,Bloom FE

更新日期：1994-03-01 00:00:00

abstract：:Gastroenteropancreatic (GEP) endocrine tumors are hypervascular tumors able to synthesize and secrete high amounts of VEGF. We aimed to study the regulation of VEGF production in GEP endocrine tumors and to test whether some of the drugs currently used in their treatment, such as somatostatin analogues and mTOR inhibi...

journal_title：Neuroendocrinology

authors： Villaume K,Blanc M,Gouysse G,Walter T,Couderc C,Nejjari M,Vercherat C,Cordier-Bussat M,Roche C,Scoazec JY

更新日期：2010-01-01 00:00:00

abstract：:The effect of stress- or lipopolysaccharide (LPS) endotoxin-induced release of ACTH, beta-endorphin (beta-END) and prolactin (PRL) was investigated in two groups of conscious male rats: (1) Rats pretreated with different H3 receptor agonists, which inhibit neuronal histamine (HA) synthesis and release, and (2) rats wi...

journal_title：Neuroendocrinology

authors： Knigge U,Søe-Jensen P,Jorgensen H,Kjaer A,Møller M,Warberg J

更新日期：1999-01-01 00:00:00

abstract：:When fetal preoptic area (POA) brain grafts that contain gonadotropin-releasing hormone cells are transplanted into the third ventricle of adult female hypogonadal mice, the animals respond with sexual maturation, persistent estrus, and the ability to ovulate reflexively after mating. However, the absence of normal sp...

journal_title：Neuroendocrinology

authors： Gibson MJ,Kokoris GJ,Silverman AJ

更新日期：1988-08-01 00:00:00

abstract：:We measured the concentration of oxytocin and vasopressin in microdissected areas of the hypothalamus and posterior pituitary in weanling and adult female rats. Oxytocin concentration was significantly less in adult rats as compared to weanling rats in the supraoptic nucleus, median eminence, and retrochiasmatic area ...

journal_title：Neuroendocrinology

authors： Jackson R,George JM

更新日期：1980-08-01 00:00:00

abstract：:A prolactin (PRL) surge occurs in the female rat during proestrus in response to elevated estradiol levels. The elevated release of ovarian steroids on the day of proestrus is also associated with sexual receptivity. Mating triggers twice-daily PRL surges that supplant the proestrous PRL surge and are responsible for ...

journal_title：Neuroendocrinology

authors： Yang S,Lee Y,Voogt JL

更新日期：1999-04-01 00:00:00

abstract：:Patients with active acromegaly are frequently insulin resistant, glucose intolerant, and at risk for developing overt type 2 diabetes. At the same time, these patients have a relatively lean phenotype associated with mobilization and oxidation of free fatty acids. These features are reversed by curative surgical remo...

journal_title：Neuroendocrinology

authors： Dal J,List EO,Jørgensen JO,Berryman DE

更新日期：2016-01-01 00:00:00

abstract：:Hypophysectomized male rats with adenohypophyses grafted under the kidney capsule (HG rat) for 3 weeks with or without estradiol implantation, were used to examine prolactin (PRL) secretion independent of hypothalamic influence. Changes in the circulating PRL concentration were monitored by taking blood samples every ...

journal_title：Neuroendocrinology

authors： Shin SH,Reifel CW

更新日期：1981-03-01 00:00:00

abstract：:Prolactin-releasing (PRF) activity was found in Pitressin (a commercial extract from posterior pituitary for vasopressin). Injection of Pitressin into conscious free-moving rats implanted with a permanent atrial indwelling cannula, produced a transient increase in prolactin concentration in the circulation. In order t...

journal_title：Neuroendocrinology

authors： Shin SH

更新日期：1982-01-01 00:00:00

abstract：:The facilitation of sexual receptivity by oxytocin (OT) in female rats is related to the regulation of oxytocin receptors (OTR) by ovarian steroids in the ventromedial nuclei (VMN) of the hypothalamus. In a previous study, we have shown that estradiol benzoate (EB) causes a twofold increase in OTR binding in the VMN. ...

journal_title：Neuroendocrinology

authors： Coirini H,Johnson AE,Schumacher M,McEwen BS

更新日期：1992-03-01 00:00:00

abstract：:The coadministration of growth hormone (GH) secretagogues can provide insight into the neuroregulation of GH secretion. The GH response to L-dopa (125, 250 and 500 mg orally for body weights less than 15 kg, between 15 and 30 kg and greater than 30 kg, respectively), arginine (Arg; 0.5 g/kg infused intravenously over ...

journal_title：Neuroendocrinology

authors： Ghigo E,Bellone J,Imperiale E,Arvat E,Mazza E,Valetto MR,Boffano GM,Cappa M,Loche S,De Sanctis C

更新日期：1990-07-01 00:00:00

abstract：:The influence of catecholamines (CA) on hypothalamic somatostatin (HPT-SRIF) was investigated in rats by using several drugs which interfere with brain CA metabolism. Depletion of brain CA stores by alpha-methyl-rho-tyrosine (AMT) increased HPT-SRIF, while augmented brain CA levels following L-dopa administration decr...

journal_title：Neuroendocrinology

authors： Torres I,Guaza C,Fernandez-Durango R,Borrell J,Charro AL

更新日期：1982-01-01 00:00:00

abstract：:Dehydration is a classic homeostatic stressor in rats that leads to a series of endocrine responses including stimulation of the hypothalamo-pituitary-adrenal (HPA) axis. During the last decade, it has been well established that perinatal food restriction is associated with the onset of diseases in adults. Our previou...

journal_title：Neuroendocrinology

authors： Sebaai N,Lesage J,Breton C,Vieau D,Deloof S

更新日期：2004-01-01 00:00:00

abstract：:To assess whether gonadotropin-releasing hormone (GnRH) release from the hypothalamus might be altered by hyperprolactinemia in the male rat, we measured in chronically hyperprolactinemic rats the pituitary GnRH receptor content and described the pattern of luteinizing hormone (LH) release during the postcastration ri...

journal_title：Neuroendocrinology

authors： Fox SR,Hoefer MT,Bartke A,Smith MS

更新日期：1987-10-01 00:00:00

abstract：:Tissue-specific stem cells are uncovered in a growing number of organs by their molecular expression profile and their potential for self-renewal, multipotent differentiation and tissue regeneration. Whether the pituitary gland also contains a pool of versatile 'master' cells that drive homeostatic, plastic and regene...

journal_title：Neuroendocrinology

authors： Vankelecom H

更新日期：2007-01-01 00:00:00

abstract：:In the present paper the effects of estradiol and testosterone on the expression of the types 1 and 5 somatostatin receptors (sst1 and sst5) in the goldfish forebrain and pituitary were investigated. Estradiol increased the sst1 expression in both the forebrain and pituitary in a dose- and time-dependent manner. In ad...

journal_title：Neuroendocrinology

authors： Canosa LF,Lin X,Peter RE

更新日期：2003-08-01 00:00:00

abstract：:Recordings were made of single unit activity through chronically implanted electrodes within the hypothalamic paraventricular nucleus of freely moving male rats also bearing chronically implanted stimulating electrodes in the preoptic area (POA) and indwelling jugular cannulae. High frequency electrical stimulation of...

journal_title：Neuroendocrinology

authors： Saphier D,Feldman S

更新日期：1986-01-01 00:00:00

abstract：:Growth hormone-releasing hormone (GHRH) stimulates GH secretion in man and the hormonal response is specific. The attenuation of GH response to bolus GHRH after prior exposure of GHRH of up to 24 h was not demonstrated in normal or GH-deficient subjects after more prolonged exposure. This suggests that the partial los...

journal_title：Neuroendocrinology

authors： Low LC

更新日期：1991-01-01 00:00:00

abstract：:We determined the effect of 17 beta-estradiol (E2) on synthesis and release of luteinizing hormone (LH) induced by drugs which activate intracellular signal transduction mechanisms in rat anterior pituitary cells. Cells were pretreated with E2 (6 x 10(-10) M) or diluent for 24 h, then washed and incubated for 4 h with...

journal_title：Neuroendocrinology

authors： Liu TC,Jackson GL

更新日期：1990-06-01 00:00:00