Binding and internalization of epidermal growth factor in human term placental cells in culture.

abstract：:Estrogen inhibits postmenopausal bone loss and decreases fracture risk. Unfortunately, estrogen replacement therapy has many undesirable side effects, the majority of which are due to stimulation of reproductive tissues. Tissue specific estrogen agonists provide a promising new alternative to natural estrogens for hor...

journal_title：Endocrinology

authors： Jimenez MA,Magee DE,Bryant HU,Turner RT

更新日期：1997-05-01 00:00:00

abstract：:Cholera toxin (CT) injected ip on day 1 (day of ovulation) of the 4-day hamster estrous cycle, when circulatory progesterone is high and estrogen low, induced a massive uterine decidual reaction, a progesterone-dependent growth normally triggered by the implanting blastocyst. However, CT injected ip on day 3, when cir...

journal_title：Endocrinology

authors： Alleva JJ,Kenimer JG,Jordan AW,Lamanna C

更新日期：1983-06-01 00:00:00

abstract：:Recent evidence suggests that the aromatization of testosterone to estrogen is important for the organizing effects of neonatal testosterone on neuroendocrine responses to acute challenges. However, the extent to which neonatal inhibition of aromatase alters the stress-induced activation of neural pathways has not bee...

journal_title：Endocrinology

authors： Bingham B,Wang NX,Innala L,Viau V

更新日期：2012-04-01 00:00:00

abstract：:The androgen receptor (AR) in Sertoli cells mediates the actions of testosterone on spermatogenesis. However, the transcription factors responsible for AR gene regulation in Sertoli cells remain unknown. In this study, we determined that nuclear factor-kappaB (NF-kappaB) regulates transcription of AR in primary cultur...

journal_title：Endocrinology

authors： Zhang L,Charron M,Wright WW,Chatterjee B,Song CS,Roy AK,Brown TR

更新日期：2004-02-01 00:00:00

abstract：:Little is known about the mechanisms of action of polypeptide hormones on chromatin structure and nuclear function. We have employed micrococcal nuclease to examine the effect of TSH on the accessibility of DNA in thyroid nuclei. Brief digestion of nuclear suspensions with 0.05-0.2 U/ml micrococcal nuclease at 26-28 C...

journal_title：Endocrinology

authors： Abe Y,Cooper E,Spaulding SW

更新日期：1982-06-01 00:00:00

abstract：:In the present study, we report that ACTH induces a transient chloride current. The lack of correlation between ACTH-induced cAMP production and amplitude of the Cl- current, as well as the absence of stimulation by forskolin or 8Br-cAMP indicated that the ACTH-induced current was not cAMP-dependent. We explored the p...

journal_title：Endocrinology

authors： Chorvátová A,Gendron L,Bilodeau L,Gallo-Payet N,Payet MD

更新日期：2000-02-01 00:00:00

abstract：:In the corpus luteum, prostaglandin F2 alpha (PGF2 alpha) appears to be a physiological agent with both antisteroidogenic and luteolytic actions. It is hypothesized that the antisteroidogenic action of PGF2 alpha acts through altered transport of cholesterol to the mitochondrial cytochrome P450 side-chain cleavage enz...

journal_title：Endocrinology

authors： McLean MP,Billheimer JT,Warden KJ,Irby RB

更新日期：1995-11-01 00:00:00

abstract：:Estrogens stimulate cell proliferation in typical estrogen-responsive tissues including the anterior pituitary gland. Here we report that 17-beta estradiol (E2) has estrogen receptor-mediated mitogenic and antimitogenic actions on rat lactotrophs in primary culture, depending on the cell context. E2 did not affect bas...

journal_title：Endocrinology

authors： Kawashima K,Yamakawa K,Takahashi W,Takizawa S,Yin P,Sugiyama N,Kanba S,Arita J

更新日期：2002-07-01 00:00:00

abstract：:Daily administration of an inhibitor of 5 alpha-reductase, 17 beta-testosterone carboxylic acid, significantly attenuated the stimulatory effect of testosterone propionate on penile erections displayed by castrated male rats which were restrained in a supine position. This treatment, however, failed to affect mating b...

journal_title：Endocrinology

authors： Bradshaw WG,Baum MJ,Awh CC

更新日期：1981-10-01 00:00:00

abstract：:To examine the role of androgen receptor (AR) in Sertoli cells (SC), we used a SC-specific AR knockout (S-AR-/y) mouse to further evaluate the chronological changes of seminiferous tubules and the molecular mechanisms of SC androgen/AR signals on spermatogenesis. Testes morphology began changing as early as postnatal ...

journal_title：Endocrinology

authors： Wang RS,Yeh S,Chen LM,Lin HY,Zhang C,Ni J,Wu CC,di Sant'Agnese PA,deMesy-Bentley KL,Tzeng CR,Chang C

更新日期：2006-12-01 00:00:00

abstract：:It is known that renin is present in fetal membranes, with the highest concentration in the chorion laeve (reflected chorion). The purpose of this study was to identify and localize renin in human chorion laeve. Indirect immunofluorescent analysis, using antiserum against pure human kidney renin, revealed a single lay...

journal_title：Endocrinology

authors： Poisner AM,Wood GW,Poisner R,Inagami T

更新日期：1981-10-01 00:00:00

abstract：:Hypophysiotrophic neurons projecting to hypophyseal portal vessels in the median eminence of the hypothalamus maintain the operation of the master gland, the pituitary, by secreting releasing and release-inhibiting hormones into the bloodstream. LHRH, synthesized in neurons of the rat prosencephalon, is one of the key...

journal_title：Endocrinology

authors： Liposits Z,Reid JJ,Negro-Vilar A,Merchenthaler I

更新日期：1995-05-01 00:00:00

abstract：:Neuronal remodeling in response to deafferenting lesions in the brain can be enhanced by estradiol (E2). Astrocytes are among the targets of E2 in complex interactions with neurons and may support or inhibit neuronal remodeling. In ovariectomized female rats given entorhinal cortex lesions, E2 replacement inhibited th...

journal_title：Endocrinology

authors： Rozovsky I,Wei M,Stone DJ,Zanjani H,Anderson CP,Morgan TE,Finch CE

更新日期：2002-02-01 00:00:00

abstract：:The effect of an activator of protein kinase C, 12-O-tetradecanoylphorbol-13-acetate (TPA), on the 5'-deiodinase (5'D) activity was studied in rat astroglial cells cultured in chemically defined medium. TPA promoted a large increase in the type II 5'D activity, which was maximal 5-10 h after addition of TPA and then d...

journal_title：Endocrinology

authors： Courtin F,Chantoux F,Gavaret JM,Toru-Delbauffe D,Jacquemin C,Pierre M

更新日期：1989-09-01 00:00:00

abstract：:In this study on highly enriched populations of cultured rat corticotropes, Ca2+ channel inhibitors were used to identify subtypes of the high threshold Ca2+ channel current under voltage clamp conditions. From a holding potential (-50 mV) that eliminated the low threshold T-type current, 52 +/- 4% of the total curren...

journal_title：Endocrinology

authors： Kuryshev YA,Childs GV,Ritchie AK

更新日期：1995-09-01 00:00:00

abstract：:Aprotinin caused a dose-dependent inhibition of [125I]hCG binding to its receptor in plasma membranes prepared from luteinized rat ovaries. Displacement of [125I]hCG from its receptor by aprotinin was temperature dependent, with an ID50 of 300 microM at 4 C and an ID50 of 3700 microM at 22 C. Equilibrium binding data ...

journal_title：Endocrinology

authors： Wilks JW,Hui OJ

更新日期：1987-03-01 00:00:00

abstract：:We used the library subtraction technique to identify genes specifically expressed in the rat uterus during early pregnancy. One such gene was that for stathmin, a factor that is associated with tubulin binding and the destabilization of microtubules. Stathmin was expressed at higher levels in implantation sites than ...

journal_title：Endocrinology

authors： Tamura K,Hara T,Yoshie M,Irie S,Sobel A,Kogo H

更新日期：2003-04-01 00:00:00

abstract：:Myocardial fibrosis is a key pathological change in a variety of heart diseases contributing to the development of heart failure, arrhythmias, and sudden death. Recent studies have shown that relaxin prevents and reverses cardiac fibrosis. Endogenous expression of relaxin was elevated in the setting of heart disease; ...

journal_title：Endocrinology

authors： Gu HP,Lin S,Xu M,Yu HY,Du XJ,Zhang YY,Yuan G,Gao W

更新日期：2012-08-01 00:00:00

abstract：:We have recently identified gonadotropes as target cells for ATP action via ATP receptors of the P2U subtype. The present studies have used gonadotrope-derived alpha T3-1 cells to examine the possible signaling mechanisms subserving ATP action in gonadotropes. Addition of ATP produced a biphasic intracellular Ca2+ (Ca...

journal_title：Endocrinology

authors： Chen ZP,Kratzmeier M,Poch A,Xu S,McArdle CA,Levy A,Mukhopadhyay AK,Lightman SL

更新日期：1996-01-01 00:00:00

abstract：:The formation of ovarian follicles and subsequent development after birth are critical processes for female reproduction, and inappropriate coordination of these processes contributes to ovarian pathologies, such as premature ovarian failure and infertility. Identification and functional investigation of the factors i...

journal_title：Endocrinology

authors： Wang N,Zhang P,Guo X,Zhou Z,Sha J

更新日期：2011-03-01 00:00:00

abstract：:Aromatase-deficient (ArKO) mice are deficient in estrogens due to deletion of the aromatase gene. We hypothesized that there may be changes in the cardiovascular system of ArKO mice because of evidence linking estrogens with improved cardiovascular outcomes and the induction of the glucocorticoid-metabolizing enzyme, ...

journal_title：Endocrinology

authors： Head GA,Obeyesekere VR,Jones ME,Simpson ER,Krozowski ZS

更新日期：2004-09-01 00:00:00

abstract：:TSH receptor (TSHR) DNA vaccination induces high TSHR antibody levels in BALB/c mice housed in a conventional facility. However, under pathogen-free conditions, we observed a Th1 cellular response to TSHR antigen characterized by interferon-gamma (IFN gamma) production. In the present study we investigated the effect ...

journal_title：Endocrinology

authors： Pichurin P,Pichurina O,Chazenbalk GD,Paras C,Chen CR,Rapoport B,McLachlan SM

更新日期：2002-04-01 00:00:00

abstract：:The estrogen receptor (ER) mixed agonists tamoxifen and raloxifene have been shown to protect against bone loss in ovariectomized rats. However, the mechanism by which these compounds manifest their activity in bone is unknown. We have used a series of in vitro screens to select for compounds that are mechanistically ...

journal_title：Endocrinology

authors： Willson TM,Norris JD,Wagner BL,Asplin I,Baer P,Brown HR,Jones SA,Henke B,Sauls H,Wolfe S,Morris DC,McDonnell DP

更新日期：1997-09-01 00:00:00

abstract：:LPXRFamide (LPXRFa) peptides have been characterized for their ability to inhibit gonadotropin (GTH) release in birds and stimulate growth hormone (GH) release in frogs. However, their involvement in regulating the reproductive hypothalamo-pituitary-gonadal axis in mammals and fish is inconclusive. To study the role o...

journal_title：Endocrinology

authors： Biran J,Golan M,Mizrahi N,Ogawa S,Parhar IS,Levavi-Sivan B

更新日期：2014-11-01 00:00:00

abstract：:Corticotropin-releasing factor-like immunoreactivity (CRF) and plasma ACTH were measured in rats bearing bilateral lesions of the paraventricular nucleus (PVN). Four to 6 days after stereotaxic surgery, CRF-like immunoreactivity content of the stalk-median eminence was reduced by 87-90% and the ACTH response to a 3-mi...

journal_title：Endocrinology

authors： Bruhn TO,Plotsky PM,Vale WW

更新日期：1984-01-01 00:00:00

abstract：:Hyperactivation of the GHRH receptor or downstream signaling components is associated with hyperplasia of the pituitary somatotrope population, in which adenomas form relatively late in life, with less than 100% penetrance. Hyperplastic and adenomatous pituitaries of metallothionein promoter-human GHRH transgenic (Tg)...

journal_title：Endocrinology

authors： Luque RM,Soares BS,Peng XD,Krishnan S,Cordoba-Chacon J,Frohman LA,Kineman RD

更新日期：2009-07-01 00:00:00

abstract：:The effects of peripheral glucagon like peptide-1 receptor (GLP-1R) stimulation on feeding, gastric emptying, and energetic responses involve vagal transmission and central nervous system processing. Despite a lack of studies aimed at determining which central nervous system regions are critical for the GLP-1R respons...

journal_title：Endocrinology

authors： Hayes MR,Skibicka KP,Grill HJ

更新日期：2008-08-01 00:00:00

abstract：:It has previously been established that neuropeptide-Y (NPY) is a potent inhibitor of alpha MSH release from the pars intermedia of the amphibian Xenopus laevis. The location of binding sites for NPY in the pars intermedia of the pituitary has now been studied with light microscopic autoradiography, using a dispersed ...

journal_title：Endocrinology

authors： De Rijk EP,Cruijsen PM,Jenks BG,Roubos EW

更新日期：1991-02-01 00:00:00

abstract：:Studies in mice have identified the ob gene product, leptin, as a signaling factor regulating body weight homeostasis and energy balance. Defective production of the encoded protein may be one of the causes for the development of obesity. Using a high affinity antibody, that in immunohistochemical studies specifically...

journal_title：Endocrinology

authors： McGregor GP,Desaga JF,Ehlenz K,Fischer A,Heese F,Hegele A,Lammer C,Peiser C,Lang RE

更新日期：1996-04-01 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