Do Substance P and Neurokinin A Play Important Roles in the Control of LH Secretion in Ewes?

abstract：:Brief exposure of male rats to estrogens during the neonatal period interrupts normal prostate development, alters epithelial cell differentiation, and predisposes this gland to hyperplasia and severe dysplasia analogous to prostatic intraepithelial neoplasia (PIN) with aging. Previous work demonstrated that the reduc...

journal_title：Endocrinology

authors： Woodham C,Birch L,Prins GS

更新日期：2003-11-01 00:00:00

abstract：:The uptake of [125I]triiodothyroacetic acid ([125I]Triac) in anterior pituitary cells was investigated and compared with that of [125I]T3. Furthermore, the effects of Triac, T3, and T4 on TSH release were compared. Cells isolated from adult male Wistar rats were cultured for 3 days in medium with 10% fetal calf serum....

journal_title：Endocrinology

authors： Everts ME,Visser TJ,Moerings EP,Docter R,van Toor H,Tempelaars AM,de Jong M,Krenning EP,Hennemann G

更新日期：1994-12-01 00:00:00

abstract：:Triglycerides are stored in specialized organelles called lipid droplets. Numerous proteins have been shown to be physically associated with lipid droplets and govern their function. Previously, the protein hypoxia-inducible lipid droplet-associated (HILPDA) was localized to lipid droplets and was suggested to inhibit...

journal_title：Endocrinology

authors： Dijk W,Mattijssen F,de la Rosa Rodriguez M,Loza Valdes A,Loft A,Mandrup S,Kalkhoven E,Qi L,Borst JW,Kersten S

更新日期：2017-05-01 00:00:00

abstract：:We have investigated the interaction between hypothalamic ACTH secretagogues and adrenocortical glucocorticoids in rat anterior pituitary tissue using an in vitro perifusion system. Repeated 5 min pulses of 41-residue CRF (CRF-41) or arginine vasopressin (AVP) were applied at 1 h intervals for up to 7 h. Administratio...

journal_title：Endocrinology

authors： Shipston MJ,Antoni FA

更新日期：1992-04-01 00:00:00

abstract：:The corpora lutea of pregnancy in the rat are highly dependent on the action of PRL and PRL-like hormones to hypertrophy and to produce progesterone needed for the maintenance of gestation. Two forms of the PRL receptor (PRL-R), designated as long (PRL-RL) and short (PRL-RS), have been described in rat tissues. To det...

journal_title：Endocrinology

authors： Telleria CM,Parmer TG,Zhong L,Clarke DL,Albarracin CT,Duan WR,Linzer DI,Gibori G

更新日期：1997-11-01 00:00:00

abstract：:The nonpeptide CRH antagonist antalarmin has been shown to block both behavioral and endocrine responses to CRH. However, it's potential activity in blunting behavioral and endocrine sequelae of stressor exposure has not been assessed. Because antagonism of central CRH by alpha-helical CRH attenuates conditioned fear ...

journal_title：Endocrinology

authors： Deak T,Nguyen KT,Ehrlich AL,Watkins LR,Spencer RL,Maier SF,Licinio J,Wong ML,Chrousos GP,Webster E,Gold PW

更新日期：1999-01-01 00:00:00

abstract：:Previous studies have shown that estradiol indirectly stimulated the proliferation of oviduct epithelial cells in the quail. The present study was undertaken to investigate the effects of estradiol and other steroid hormones on the cAMP concentration. The ability of forskolin, a specific activator of the catalytic sub...

journal_title：Endocrinology

authors： Laugier C,Courion C,Pageaux JF,Fanidi A,Dumas MY,Sandoz D,Nemoz G,Prigent AF,Pacheco H

更新日期：1988-01-01 00:00:00

abstract：:The mouse mammary gland and uterus expressed the gene for the secretory protein lactotransferrin under various physiological conditions. Lactotransferrin, however, was induced by estrogen in a time- and dose-dependent fashion in the uterus of the immature mouse, but was not affected by estrogen in the mammary gland. D...

journal_title：Endocrinology

authors： Teng CT,Pentecost BT,Chen YH,Newbold RR,Eddy EM,McLachlan JA

更新日期：1989-02-01 00:00:00

abstract：:Testosterone propionate causes a striking increase in in vivo uptake of 2-deoxyglucose by the levator ani muscle of immature male rats. Autoradiography showed the labeled 2-deoxyglucose to be uniformly distributed over the entire muscle. Liquid scintillation counting of whole muscles allowed quantification of 2-deoxyg...

journal_title：Endocrinology

authors： Max SR,Toop J

更新日期：1983-07-01 00:00:00

abstract：:Prostacyclin (PGI2) (1-5 micrograms in 3 microliters 0.05 M Tris/HCl buffer, pH 7.5) and its stable metabolite, 6-oxo-PGF1 alpha, were microinjected into the third ventricle of ovariectomized rats, and plasma FSH, GH, PRL, and TSH levels were measured by RIA. Control animals received 3 microliters buffer. Injection of...

journal_title：Endocrinology

authors： Ottlecz A,Samson WK,McCann SM

更新日期：1984-02-01 00:00:00

abstract：:Interleukin-6 (IL-6) stimulates the release of hCG from syncytiotrophoblast cells, but the effects of IL-6 and other cytokines on the release of placental lactogen (hPL) are unknown. To determine the effect of IL-6 on hPL release, we exposed an enriched fraction of trophoblast cells (prepared by the isopycnic centrifu...

journal_title：Endocrinology

authors： Stephanou A,Handwerger S

更新日期：1994-08-01 00:00:00

abstract：:The existence of cytoplasmic estrogen receptors (ERs) has been reported in the guinea pig brain using immunocytochemical techniques. While cytoplasmic ERs have been reported recently in other species, such as opossum, musk shrew, and ferrets, an exclusively cell nuclear pattern of ER immunoreactivity has been reported...

journal_title：Endocrinology

authors： Blaustein JD

更新日期：1992-09-01 00:00:00

abstract：:Estrogen deficiency causes bone loss by increasing the number of bone-resorbing osteoclasts. Selective p38α MAPK inhibitors prevent bone-wasting effects of estrogen withdrawal but implicated mechanisms remain to be identified. Here, we show that inactivation of the p38α-encoding gene in osteoblast lineage cells with t...

journal_title：Endocrinology

authors： Thouverey C,Caverzasio J

更新日期：2015-12-01 00:00:00

abstract：:Circulating angiotensin II (ANGII) elicits water intake and activates the hypothalamic-pituitary-adrenal (HPA) axis by stimulating angiotensin type 1 receptors (AT1Rs) within circumventricular organs. The subfornical organ (SFO) and the organum vasculosum of the lamina terminalis (OVLT) are circumventricular organs th...

journal_title：Endocrinology

authors： Krause EG,Melhorn SJ,Davis JF,Scott KA,Ma LY,de Kloet AD,Benoit SC,Woods SC,Sakai RR

更新日期：2008-12-01 00:00:00

abstract：:The steroid hormone 1 alpha,25-dihydroxyvitamin D3 [1,25-(OH)2D3] can elicit biological responses via a nongenomic pathway that involves rapid opening of the plasma membrane Ca2+ channels. There is also evidence that 1,25-(OH)2D3 influences insulin secretion in the pancreatic beta-cell, which is primarily mediated by ...

journal_title：Endocrinology

authors： Sergeev IN,Rhoten WB

更新日期：1995-07-01 00:00:00

abstract：:Nitrogenous compounds were studied for their effect on cGMP levels in the thyroid. Several agents, including sodium nitrite and hydroxylamine, could generate a rise of over 100-fold in cGMP. At a concentration of 20 mM, HN2OH and NaNO2 significantly reduced cAMP levels previously generated by 0.5 mU/ml TSH. If the sli...

journal_title：Endocrinology

authors： Spaulding SW

更新日期：1979-09-01 00:00:00

abstract：:Ovarian hormones, including 17β-estradiol, are implicated in numerous physiological processes, including sleep. Beginning at puberty, girls report more sleep complaints than boys, which is maintained throughout the reproductive life stage. Sleep problems are exacerbated during the menopausal transition, evidenced by g...

journal_title：Endocrinology

authors： Brown AMC,Gervais NJ

更新日期：2020-09-01 00:00:00

abstract：:A novel transcript of the GH gene has been identified in ocular tissues of chick embryos. It is, however, unknown whether this transcript (small chicken GH, scGH) is translated. This possibility was therefore assessed. The expression of scGH mRNA was confirmed by RT-PCR, using primers that amplified a 426-bp cDNA of i...

journal_title：Endocrinology

authors： Baudet ML,Martin B,Hassanali Z,Parker E,Sanders EJ,Harvey S

更新日期：2007-01-01 00:00:00

abstract：:In the course of previous studies using continuous monitoring of the electrophysiological correlates of GnRH pulse generator activity, characterized by episodic increases in hypothalamic multiunit electrical activity (MUA volley), it was noticed that the nocturnal slowing of pulse generator frequency was an acute phen...

journal_title：Endocrinology

authors： O'Byrne KT,Thalabard JC,Chiappini SE,Chen MD,Hotchkiss J,Knobil E

更新日期：1993-10-01 00:00:00

abstract：:Obesity is associated with systemic inflammation and elevated levels of TNFα, leading to impaired glucose tolerance. In humans, obesity is also associated with reduced nutrient-stimulated secretion of the intestinal incretin hormone, glucagon-like peptide-1 (GLP-1). We hypothesized that TNFα plays a direct role in the...

journal_title：Endocrinology

authors： Gagnon J,Sauvé M,Zhao W,Stacey HM,Wiber SC,Bolz SS,Brubaker PL

更新日期：2015-11-01 00:00:00

abstract：:The present study was designed to evaluate the relative contribution of endogenous excitatory amino acids to the control of the estradiol-induced LH surge using specific blockers for N-methyl-D-aspartic acid (NMDA) and non-NMDA receptor types. Adult female rats ovariectomized for 2-3 weeks were implanted with third ve...

journal_title：Endocrinology

authors： López FJ,Donoso AO,Negro-Vilar A

更新日期：1990-03-01 00:00:00

abstract：:Caveolae and their principal component caveolin have been implicated in playing a major role in G protein-mediated transmembrane signaling. We examined whether caveolin interacts with adenylyl cyclase, an effector of G protein signaling, using a 20-mer peptide derived from the N-terminus scaffolding domain of caveolin...

journal_title：Endocrinology

authors： Toya Y,Schwencke C,Couet J,Lisanti MP,Ishikawa Y

更新日期：1998-04-01 00:00:00

abstract：:Ghrelin, a novel 28 amino acid peptide found in hypothalamus and stomach, was recently identified as the endogenous ligand for the growth hormone secretagogue receptor (GHS-R). We have now found that both intracerebroventricular (i.c.v.) and intraperitoneal (i.p.) administration of ghrelin in freely feeding rats stimu...

journal_title：Endocrinology

authors： Wren AM,Small CJ,Ward HL,Murphy KG,Dakin CL,Taheri S,Kennedy AR,Roberts GH,Morgan DG,Ghatei MA,Bloom SR

更新日期：2000-11-01 00:00:00

abstract：:The concentration of testosterone (T) and 5alpha-dihydrotestosterone (DHT) in plasma, seminal fluid, and epididymis of male Wistar rats have been determined by radioimmunoassay. The DHT/T ratio rose from 0.1 in blood to 1 in testicular fluid and 4 in epididymal fluid. This ratio is 2 in tissues of "caput" epididymis a...

journal_title：Endocrinology

authors： Pujol A,Bayard F,Louvet JP,Boulard C

更新日期：1976-01-01 00:00:00

abstract：:Using immunocytochemistry and electron microscopy, we demonstrate that oxytocin (OT) exerts a trophic effect on its target myoepithelial cells in the mammary gland. In vitro, in organotypic cultures of mouse mammary gland, we examined proliferation and differentiation of the different cell types induced by OT added to...

journal_title：Endocrinology

authors： Sapino A,Macrì L,Tonda L,Bussolati G

更新日期：1993-08-01 00:00:00

abstract：:Estradiol is known to inhibit antigen presentation in the vagina. We report here that TGFbeta mediates the action of estradiol on vaginal antigen presenting cells (APC). When vaginal APC from ovariectomized rats were incubated with increasing concentrations of TGFbeta1 and TGFbeta2 in the presence of ovalbumin-specifi...

journal_title：Endocrinology

authors： Wira CR,Roche MA,Rossoll RM

更新日期：2002-08-01 00:00:00

abstract：:Glucocorticoids induce tyrosine aminotransferase (TAT) in hepatoma cells. We have previously shown that both the concentration of the agonist dexamethasone (Dex) required for half-maximal induction (EC50) and the amount of agonist activity produced by the antagonist dexamethasone 21-mesylate (Dex-Mes), expressed as a ...

journal_title：Endocrinology

authors： Oshima H,Simons SS Jr

更新日期：1992-04-01 00:00:00

abstract：:Anandamide and 2-arachidonoylglycerol (2-AG), two endogenous ligands of the CB1 and CB2 cannabinoid receptor subtypes, inhibit the proliferation of PRL-responsive human breast cancer cells (HBCCs) through down-regulation of the long form of the PRL receptor (PRLr). Here we report that 1) anandamide and 2-AG inhibit th...

journal_title：Endocrinology

authors： Melck D,De Petrocellis L,Orlando P,Bisogno T,Laezza C,Bifulco M,Di Marzo V

更新日期：2000-01-01 00:00:00

abstract：:Transforming growth factor-alpha (TGF alpha) has been localized to the anterior pituitary, specifically to the lactotroph and somatotroph cell populations, by our previous studies. Since pituitary lactotrophs are known to undergo growth in response to estrogens, we have used an estradiol-induced pituitary hyperplasia/...

journal_title：Endocrinology

authors： Borgundvaag B,Kudlow JE,Mueller SG,George SR

更新日期：1992-06-01 00:00:00

abstract：:Cloning of GnRH receptors from several animal species has made it possible to investigate receptor function using site-directed mutagenesis. However, many mutant GnRH receptors exhibit decreased ligand binding, which makes analysis of their ligand binding characteristics technically difficult. To increase the affinity...

journal_title：Endocrinology

authors： Flanagan CA,Fromme BJ,Davidson JS,Millar RP

更新日期：1998-10-01 00:00:00