Expression of alpha-subunit and luteinizing hormone (LH) beta messenger ribonucleic acid in the rat during lactation and after pup removal: relationship to pituitary gonadotropin-releasing hormone receptors and pulsatile LH secretion.

abstract：:Estradiol (E(2)) rapidly and strongly induces vascular endothelial growth factor (VEGF) transcription in uterine endometrial epithelial cells in vivo. We have shown that this is mediated by both the estrogen receptor-alpha and hypoxia-inducible factor (HIF)-1alpha. By contrast, E(2) induces little or no VEGF expressio...

journal_title：Endocrinology

authors： Molitoris KH,Kazi AA,Koos RD

更新日期：2009-12-01 00:00:00

abstract：:Somatostatin (SRIF) inhibits GH release from rat somatotropes by reducing adenylate cyclase (AC) activity and the free cytosolic calcium concentration ([Ca(2+)](i)). In contrast, we have reported that SRIF can stimulate GH release in vitro from pig somatotropes. Specifically, 10(-7) and 10(-15) M SRIF stimulate GH rel...

journal_title：Endocrinology

authors： Ramírez JL,Gracia-Navarro F,García-Navarro S,Torronteras R,Malagón MM,Castaño JP

更新日期：2002-03-01 00:00:00

abstract：:Specific receptors for tetradecapeptide somatostatin (S-14) in rat adrenal cortical membranes were quantitated by direct binding studies using [125I-Tyr11]S-14. Competitive inhibition of this radioligand by S-14 showed that these receptors constitute a single class of high affinity binding sites [dissociation constant...

journal_title：Endocrinology

authors： Srikant CB,Patel YC

更新日期：1985-05-01 00:00:00

abstract：:Several lines of indirect evidence suggest that a monocyte family precursor gives rise to the osteoclast, although this hypothesis is controversial. Starting with a uniform population of nonspecific esterase positive, tartrate-sensitive, acid phosphatase-producing, mannose receptor-bearing mononuclear cells, prepared ...

journal_title：Endocrinology

authors： Alvarez JI,Teitelbaum SL,Blair HC,Greenfield EM,Athanasou NA,Ross FP

更新日期：1991-05-01 00:00:00

abstract：:To define the specific role of IGF-I receptor (IGF-IR) in adipogenic and thermogenic differentiation of brown adipocytes during late fetal life, we have established immortalized brown adipocyte cell lines from fetuses of IGF-IR-deficient mice (IGF-IR(-/-)) as well as from wild-type mice (IGF-IR(+/+)). IGF-IR(-/-) cell...

journal_title：Endocrinology

authors： Mur C,Arribas M,Benito M,Valverde AM

更新日期：2003-02-01 00:00:00

abstract：:In view of recent reports on ovarian production and action of transforming growth factors (TGFs) and inhibin-related proteins (inhibin, activin, and follistatin), we have examined the effects of these hormones on the function of preovulatory follicles in vitro. Individual preovulatory follicles were obtained from PMSG...

journal_title：Endocrinology

authors： Tsafriri A,Vale W,Hsueh AJ

更新日期：1989-10-01 00:00:00

abstract：:Thyromimetics represent a class of experimental drugs that can stimulate tissue-selective thyroid hormone action. As such, thyromimetics should have effects on the hypothalamic-pituitary-thyroid (HPT) axis, but details of this action and the subsequent effects on systemic thyroid hormone levels have not been reported ...

journal_title：Endocrinology

authors： Ferrara SJ,Bourdette D,Scanlan TS

更新日期：2018-07-01 00:00:00

abstract：:Rat sexual maturation is preceded by a reduction of the interpulse interval (IPI) of GnRH neurosecretion. This work aims at studying disruption of that neuroendocrine event in females after early exposure to a very low dose of bisphenol A (BPA), a ubiquitous endocrine disrupting chemical. Female rats were exposed to v...

journal_title：Endocrinology

authors： Franssen D,Gérard A,Hennuy B,Donneau AF,Bourguignon JP,Parent AS

更新日期：2016-05-01 00:00:00

abstract：:We previously identified a highly conserved specificity protein 1 (Sp1) DNA element in mammalian PTH promoters that acted as an enhancer of gene transcription and bound Sp1 and Sp3 proteins present in parathyroid gland nuclear extracts. More recently, a nuclear factor (NF)-Y element (NF-Y(prox)) was also described by ...

journal_title：Endocrinology

authors： Alimov AP,Park-Sarge OK,Sarge KD,Malluche HH,Koszewski NJ

更新日期：2005-08-01 00:00:00

abstract：:Hypoxia-inducible factor-1 (HIF-1) is a decisive element for the transcriptional regulation of many genes expressed in hypoxic conditions. In vascular smooth muscle cells, the vasoactive hormone angiotensin II (Ang II) is a very potent inducer and activator of HIF-1. As opposed to hypoxia, which induces HIF-1alpha by ...

journal_title：Endocrinology

authors： Lauzier MC,Pagé EL,Michaud MD,Richard DE

更新日期：2007-08-01 00:00:00

abstract：:The antiapoptotic molecule Fas-associated death domain-like IL-1beta-converting enzyme inhibitory protein (FLIP) inhibits Fas-mediated apoptosis by blocking activation of caspase-8. We previously showed that expression of transgenic FLIP on thyroid epithelial cells (TECs) of DBA/1 and CBA/J mice promoted earlier resol...

journal_title：Endocrinology

authors： Fang Y,Braley-Mullen H

更新日期：2008-07-01 00:00:00

abstract：:We have investigated the effects of iv administered noradrenergic agonists and antagonists on plasma GH concentration in the adolescent baboon, Papio papio, with the aim of defining the relative roles of adrenergic receptor subtypes (alpha 1, alpha 2, beta 1, and beta 2) in the regulation of GH release. Clonidine (0.0...

journal_title：Endocrinology

authors： McWilliam JR,Meldrum BS

更新日期：1983-01-01 00:00:00

abstract：:Mammary gland explants from mature virgin mice, rats, and rabbits exhibit an increased rate of both DNA and casein syntheses when cultured in the presence of specific combinations of insulin, hydrocortisone, and PRL. If cytosine arabinoside, a potent inhibitor of DNA synthesis, is added to the culture medium, casein s...

journal_title：Endocrinology

authors： Nicholas KR,Bolander FF Jr,Sankaran L,Topper YJ

更新日期：1983-03-01 00:00:00

abstract：:The quantities of estrone and estradiol were determined by radioimmunoassay in maternal and fetal plasma of the rhesus monkey from day 59 to 163 of gestation. A two way analysis of variance of data classified according to fetal sex and 3 pooled gestational ages for each hormone and for mother or fetus (4 analyses) rev...

journal_title：Endocrinology

authors： Resko JA,Pleom JG,Stadelman HL

更新日期：1975-08-01 00:00:00

abstract：:We examined the effects of removing extracellular Ca2+ (Ca2+e), depleting intracellular Ca2+ (Ca2+i), inhibiting cAMP-dependent calmodulin, and blocking voltage-sensitive Ca2+ channels on the secretion of ACTH by perifused dispersed rat anterior pituitary cells. The cells were stimulated with synthetic arginine vasopr...

journal_title：Endocrinology

authors： Won JG,Oki Y,Orth DN

更新日期：1990-02-01 00:00:00

abstract：:LHRH release is dependent on the availability of calcium, and prostaglandin E2 is a potent releaser of LHRH. Therefore, we investigated the role of phospholipase A2 (PLA2) on the release of LHRH from the hypothalamus. Four rat hypothalami were perifused with Krebs-Ringer buffer, and after a 60-min preincubation period...

journal_title：Endocrinology

authors： Nava LE,Malacara JM

更新日期：1987-10-01 00:00:00

abstract：:Glucagon-like peptide-1 (GLP-1) enhances insulin biosynthesis and secretion as well as transcription of the insulin, GLUT2 and glucokinase genes. The latter are also regulated by the PDX-1 homeoprotein. We investigated the possibility that GLP-1 may be having its long-term pleiotropic effects through a hitherto unknow...

journal_title：Endocrinology

authors： Wang X,Cahill CM,Piñeyro MA,Zhou J,Doyle ME,Egan JM

更新日期：1999-10-01 00:00:00

abstract：:The Ca2+ response of individual cells to TRH was investigated in excitable pituitary GH3 and in nonexcitable Hela cells transfected with the TRH receptor complementary DNA (HelaR cells). GH3 cells typically responded to 1 microM TRH with an immediate transient [Ca2+]i spike (mean peak [Ca2+]i = 1.5 microM) followed by...

journal_title：Endocrinology

authors： Nelson EJ,Hinkle PM

更新日期：1994-09-01 00:00:00

abstract：:The purpose of the present study was to test whether rat placental lactogen, proposed to be inhibitory for endogenous rhythmic PRL secretion during pregnancy, is also inhibitory for a neurally mediated PRL response to exogenous stimulation, i.e. suckling. Pregnant lactating rats were used as the model in this study. B...

journal_title：Endocrinology

authors： Yogev L,Terkel J

更新日期：1982-01-01 00:00:00

abstract：:Thyroid hormones play a major role in body homeostasis, regulating energy expenditure and cardiovascular function. Given that obese people or athletes might consider rapid weight loss as beneficial, voluntary intoxication with T4 preparations is a growing cause for thyrotoxicosis. However, the long-lasting effects of ...

journal_title：Endocrinology

authors： Hoefig CS,Harder L,Oelkrug R,Meusel M,Vennström B,Brabant G,Mittag J

更新日期：2016-07-01 00:00:00

abstract：:A [3H]colchicine-binding assay was employed for estimating the relative amounts of soluble and polymerized tubulin present in an individual anterior pituitary lobe. Colchicine binding to these two tubulin pools was time dependent and dose responsive. Scatchard analysis of the binding revealed that [3H]colchicine bound...

journal_title：Endocrinology

authors： Ravindra R,Grosvenor CE

更新日期：1988-01-01 00:00:00

abstract：:Insulin and insulin-like growth factors (IGFs) stimulate responses in skeletal muscle that include effects on carbohydrate and fat metabolism, protein turnover, growth, and differentiation. To gain insight into the relative importance of insulin and IGFs at different stages of development, the expression of their spec...

journal_title：Endocrinology

authors： Alexandrides T,Moses AC,Smith RJ

更新日期：1989-02-01 00:00:00

abstract：:Granulosa cells isolated from the ovaries of pregnant mare serum gonadotropin (PMSG)-treated immature rats were cultured with relaxin or FSH. Both hormones increased the secretion of plasminogen activator into the culture medium. Relaxin caused a dose-related rise in plasminogen activator but did not increase cAMP or ...

journal_title：Endocrinology

authors： Too CK,Weiss TJ,Bryant-Greenwood GD

更新日期：1982-10-01 00:00:00

abstract：:The roles of growth hormone and somatomedin in stimulating muscle cell proliferation were investigated in a series of experiments on myoblast growth in culture. At levels 100 times normal circulating concentrations, neither growth hormone nor insulin stimulated growth of rat muscle cells in serum-free medium. In contr...

journal_title：Endocrinology

authors： Florini JR,Nicholson ML,Dulak NC

更新日期：1977-07-01 00:00:00

abstract：:Uterine estrogen receptor (ER) and ER mRNA were measured in cycling and ovariectomized (OVX) estrogen-treated mice to probe the physiological regulation of the intracellular distribution and biosynthesis of ER. On proestrus, when plasma estradiol (E2) levels are highest, the cell nuclear ER concentration was 2.4-fold ...

journal_title：Endocrinology

authors： Bergman MD,Schachter BS,Karelus K,Combatsiaris EP,Garcia T,Nelson JF

更新日期：1992-04-01 00:00:00

abstract：:The mechanism by which xylazine raises plasma glucose but lowers insulin concentrations was examined in Holstein cows. Intravenous injection of xylazine (15-150 micrograms/kg) induced a dose-dependent hyperglycemia and hypoinsulinemia for 3-4 h. An alpha 2-adrenergic blocking agent, yohimbine, and an alpha 1- and alph...

journal_title：Endocrinology

authors： Hsu WH,Hummel SK

更新日期：1981-09-01 00:00:00

abstract：:GH and insulin-like growth factor (IGF)-I are important components of the growth axis. We undertook to determine how plasma levels of these hormones altered with different seasonal and nutritional states in young male red deer to provide an insight into how the growth axis changes under these conditions. Growth rate a...

journal_title：Endocrinology

authors： Webster JR,Corson ID,Littlejohn RP,Stuart SK,Suttie JM

更新日期：1996-02-01 00:00:00

abstract：:Na(+)/I(-) symporter (NIS)-mediated iodide uptake into thyroid follicular cells serves as the basis of radioiodine therapy for thyroid cancer. NIS protein is also expressed in the majority of breast tumors, raising potential for radionuclide therapy of breast cancer. KT5823, a staurosporine-related protein kinase inhi...

journal_title：Endocrinology

authors： Beyer S,Lakshmanan A,Liu YY,Zhang X,Wapnir I,Smolenski A,Jhiang S

更新日期：2011-03-01 00:00:00

abstract：:We report here the desensitization and internalization of the relaxin receptor (RXFP1) after agonist activation in both primary human decidual cells and HEK293 cells stably transfected with RXFP1. The importance of beta-arrestin 2 in these processes has also been demonstrated. Thus, in HEK-RXFP1 cells the desensitizat...

journal_title：Endocrinology

authors： Kern A,Bryant-Greenwood GD

更新日期：2009-05-01 00:00:00

abstract：:Maintenance of FSH biosynthesis requires ongoing exposure to pulsatile GnRH. Recent data demonstrate that activin also stimulates FSH biosynthesis. We used a perifused pituitary system to examine regulation of FSH beta mRNA levels by pulsatile GnRH and activin. Hourly pulses of 10 nM GnRH increased FSH beta mRNA level...

journal_title：Endocrinology

authors： Weiss J,Harris PE,Halvorson LM,Crowley WF Jr,Jameson JL

更新日期：1992-09-01 00:00:00