Direct inhibitory effect of GnRH on androgen secretion by ovarian interstitial cells.

abstract：:High fat feeding is associated with impaired insulin action, an obese body composition, and down-regulation of glucose transporter-4 (GLUT4) expression in adipocytes. We recently showed that overexpression of GLUT4 selectively in adipocytes of transgenic mice using the aP2 (fatty acid-binding protein) promoter/enhance...

journal_title：Endocrinology

authors： Gnudi L,Tozzo E,Shepherd PR,Bliss JL,Kahn BB

更新日期：1995-03-01 00:00:00

abstract：:We have used in situ hybridization histochemistry to investigate interactions between the thyroid and adrenal axes in the rat. Propylthiouracil (PTU)-induced hypothyroidism caused a significant reduction in CRH gene transcripts in the paraventricular nucleus of male rats, with a concomitant decrease in both POMC gene ...

journal_title：Endocrinology

authors： Shi ZX,Levy A,Lightman SL

更新日期：1994-03-01 00:00:00

abstract：:GH promptly increases cytosolic free calcium ([Ca2+]i) in freshly isolated rat adipocytes. Adipocytes deprived of GH for 3 h or longer are incapable of increasing [Ca2+]i in response to GH, but instead respond in an insulin-like manner. Insulin blocks the GH-induced increase in [Ca2+]i in GH-replete cells and stimulat...

journal_title：Endocrinology

authors： Gaur S,Yamaguchi H,Goodman HM

更新日期：2000-02-01 00:00:00

abstract：:The ileal proglucagon-derived peptides (PGDPs) play important roles in the regulation of gastric function and insulin secretion. We have previously demonstrated the existence of a proximal-distal enteroendocrine loop mediated by glucose-dependent insulinotropic peptide (GIP), through which intestinal PGDP secretion is...

journal_title：Endocrinology

authors： Roberge JN,Gronau KA,Brubaker PL

更新日期：1996-06-01 00:00:00

abstract：:Changes in several extracellular matrix proteins, such as fibronectin in fetal membrane and cervical collagens, occur at term and preterm delivery. However, no studies have evaluated changes in extracellular matrix proteins, in relation to myometrial activation recorded using invasive techniques during parturition in ...

journal_title：Endocrinology

authors： Wu WX,Zhang Q,Ma XH,Unno N,Nathanielsz PW

更新日期：1999-05-01 00:00:00

abstract：:Newly discovered kisspeptin (metastin), encoded by the Kiss1/KISS1 gene, is considered as a major gatekeeper of puberty through the regulation of GnRH. In the present study, we cloned a novel kisspeptin gene (kiss2) in the zebrafish Danio rerio and the medaka Oryzias latipes, which encodes a sequence of 125 and 115 am...

journal_title：Endocrinology

authors： Kitahashi T,Ogawa S,Parhar IS

更新日期：2009-02-01 00:00:00

abstract：:The consumption of refined sugars continues to pose a significant health risk. However, nearly nothing is known about the effects of sugar intake by healthy women on the oocyte or embryo. Using rhesus monkeys, we show that low-dose sucrose intake over a 6-month period has an impact on the oocyte with subsequent effect...

journal_title：Endocrinology

authors： Chaffin CL,Latham KE,Mtango NR,Midic U,VandeVoort CA

更新日期：2014-07-01 00:00:00

abstract：:Kisspeptins are hypothalamic neuropeptides encoded by KISS1 and recently described as major regulators of GnRH release from hypothalamic neurons. Although 17beta-estradiol (E2)-induced up-regulation of KISS1 expression has been documented in anteroventral periventricular nucleus neurons, E2 down-regulates KISS1 expres...

journal_title：Endocrinology

authors： Huijbregts L,de Roux N

更新日期：2010-08-01 00:00:00

abstract：:Proteolytic degradation of extracellular matrix components has been suggested to play an essential role in the occurrence of ovulation. Recent studies in our laboratory have indicated that the plasminogen activator and matrix metalloproteinase systems, which were previously believed to be crucial for ovulation, are no...

journal_title：Endocrinology

authors： Wahlberg P,Nylander A,Ahlskog N,Liu K,Ny T

更新日期：2008-10-01 00:00:00

abstract：:The adrenergic control of cAMP and 3',5'-cyclic GMP (cGMP) in dispersed adult rat pinealocytes was investigated. Norepinephrine treatment increased cAMP and cGMP content 60- and 400-fold, respectively; both alpha- and beta-adrenoceptors had to be activated for these responses to occur. Beta-Adrenergic stimulation alon...

journal_title：Endocrinology

authors： Vanecek J,Sugden D,Weller J,Klein DC

更新日期：1985-06-01 00:00:00

abstract：:The inhibitory effect of T3 on TSH release was studied on a population of thyrotroph-enriched cells prepared from bovine pituitary glands by centrifugal elutriation. The cells (2.0 X 10(5)/ml) were cultured for 2 days and then exposed to TRH, phorbol-12 myristate-13 acetate (PMA), or calcium ionophore (A23187) with or...

journal_title：Endocrinology

authors： Yanagisawa M,Mirell CJ,Hershman JM

更新日期：1988-05-01 00:00:00

abstract：:Sodium vanadate, an agent known to have multiple cellular actions, was studied for its effects on aspects of bone formation in cultures of 21-day-old fetal rat calvariae. Vanadate (0.1-10 microM) stimulated the incorporation of [3H] thymidine into acid-insoluble residues (DNA); the effect appeared after 3 h and was su...

journal_title：Endocrinology

authors： Canalis E

更新日期：1985-03-01 00:00:00

abstract：:Acylation-stimulating protein (ASP) is a potent lipogenic protein produced by adipocytes. In vitro studies have shown that ASP increases triglyceride synthesis and glucose transport in both murine and human adipocytes. Our initial study indicated that complement C3-deficient (-/-) mice (and, therefore, ASP deficient) ...

journal_title：Endocrinology

authors： Murray I,Havel PJ,Sniderman AD,Cianflone K

更新日期：2000-03-01 00:00:00

abstract：:In primary cultures of sheep pituitary cells extracellular nucleotides stimulated rapid increases in inositol tris- and bisphosphate, accompanied by intracellular Ca2+ mobilization. A similar stimulation of inositol phosphate production by extracellular nucleotides was observed in rat and baboon pituitary cells. The i...

journal_title：Endocrinology

authors： Davidson JS,Wakefield IK,Sohnius U,van der Merwe PA,Millar RP

更新日期：1990-01-01 00:00:00

abstract：:The presence of multiple monomeric forms has been described for estrogen receptor (ER) in different target tissues. Using [3H]tamoxifen aziridine ([3H]TA) to covalently label ER and sodium dodecyl sulfate-polyacrylamide gel electrophoresis to analyze labeled products, ER forms were investigated in pituitary cytosol an...

journal_title：Endocrinology

authors： Geffroy-Roisne S,Duval J,Thieulant ML

更新日期：1992-09-01 00:00:00

abstract：:Exposure to environmental toxicants during fetal development alters gene expression and promotes disease later in life. Di-(2-ethylhexyl) phthalate (DEHP) is a plasticizer widely used for the manufacturing of consumer products. Exposure to DEHP has been associated with obesity, asthma, and low T levels. In utero expos...

journal_title：Endocrinology

authors： Martinez-Arguelles DB,Papadopoulos V

更新日期：2015-01-01 00:00:00

abstract：:Some 17 alpha-alkylated androgens used as anabolic agents, such as stanozolol (ST) and danazol (DA), have specific effects on the liver that are not exerted by testosterone. This gives rise to the possibility that a steroid-binding protein, other than the androgen receptor, could modulate the intracellular actions of ...

journal_title：Endocrinology

authors： Fernández L,Chirino R,Boada LD,Navarro D,Cabrera N,del Rio I,Díaz-Chico BN

更新日期：1994-03-01 00:00:00

abstract：:Obesity is often associated with an impairment of the hypothalamic-pituitary-gonadal axis. The leptin-deficient ob/ob mouse model is characterized by a morbid obesity with a sterility in males and females that is corrected by continuous leptin treatment. Since ob/ob mice are maintained on the C57BL/6J inbred genetic b...

journal_title：Endocrinology

authors： Ewart-Toland A,Mounzih K,Qiu J,Chehab FF

更新日期：1999-02-01 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：:Exposure of the ileum to nutrients markedly inhibits several upper gastrointestinal functions. Hormonal peptides of the ileal wall, i.e. peptide YY (PYY), glucagon-like peptide-1 (GLP-1), and neurotensin (NT), are thought to play a role in this negative feedback mechanism. The present study was conducted to comparativ...

journal_title：Endocrinology

authors： Dumoulin V,Moro F,Barcelo A,Dakka T,Cuber JC

更新日期：1998-09-01 00:00:00

abstract：:To probe the possible role of endogenous opiates in Sertoli cell proliferation during testicular development, the effect of interfering with beta-endorphin action either in vivo or in vitro was determined. The percent of Sertoli cells dividing was measured with quantitative autoradiography in [methyl 3H]-thymidine-exp...

journal_title：Endocrinology

authors： Orth JM

更新日期：1986-10-01 00:00:00

abstract：:A major issue of in the treatment of diabetes is the risk of hypoglycemia. Hypoglycemia is detected both centrally and peripherally in the porto-hepatic area. The portal locus for hypoglycemic detection was originally described using the "local irrigation of the liver" approach in a canine model. Further work using po...

journal_title：Endocrinology

authors： Ionut V,Castro AV,Woolcott OO,Stefanovski D,Iyer MS,Broussard JL,Mkrtchyan H,Burch M,Elazary R,Kirkman E,Bergman RN

更新日期：2014-04-01 00:00:00

abstract：:Adult female transgenic mice expressing the human GH (hGH) gene with mouse metallothionein-I promoter are sterile. To evaluate the hypothalamic-pituitary function in these animals, adult female transgenic mice and nontransgenic normal littermates were ovariectomized. On days 7 and 8 after ovariectomy, mice were inject...

journal_title：Endocrinology

authors： Chandrashekar V,Bartke A,Wagner TE

更新日期：1992-04-01 00:00:00

abstract：:The TSH receptor (TSHR) hinge region, the least well understood component, bridges the leucine-rich repeat and transmembrane domains. We report data on clusters of hinge charged residues the mutation of which to Ala is compatible with cell surface expression and normal, or near normal, TSH binding affinity yet with a ...

journal_title：Endocrinology

authors： Chen CR,Salazar LM,McLachlan SM,Rapoport B

更新日期：2012-10-01 00:00:00

abstract：:Axonal degeneration often leads to the death of neuronal cell bodies. Previous studies demonstrated the substantial protective role of 17β-estradiol (E2) in several types of neuron. However, most studies examined cell body protection, and the role of 17β-E2 in axonal degeneration of retinal ganglion cells (RGC) remain...

journal_title：Endocrinology

authors： Kitaoka Y,Munemasa Y,Hayashi Y,Kuribayashi J,Koseki N,Kojima K,Kumai T,Ueno S

更新日期：2011-07-01 00:00:00

abstract：:The sexually dimorphic extrahypothalamic arginine-vasopressin (AVP) projections from the bed nucleus of the stria terminalis to the lateral septum (LS) and lateral habenula (LHb) are denser in males than females and, in rats, require males' perinatal exposure to gonadal hormones but the absence of such exposure in fem...

journal_title：Endocrinology

authors： Lonstein JS,Rood BD,De Vries GJ

更新日期：2005-03-01 00:00:00

abstract：:Steroid hormones can differentially modify gonadotropin release stimulated by GnRH. Decreased GnRH-mediated gonadotropin release has been observed in vitro after pretreatment with androgens or glucocorticoids. In this study, we tested this phenomenon further with the use of a new cytochemical stain for a potent biotin...

journal_title：Endocrinology

authors： Tibolt RE,Childs GV

更新日期：1985-07-01 00:00:00

abstract：:The effects of insulin to stimulate metabolic and mitogenic responses were examined in Rat 1 fibroblast cells that overexpressed either normal (HIRc) or kinase-deficient human insulin receptors. When studied at the optimal growth stage for each cell line, insulin-stimulated responses measured in cells containing kinas...

journal_title：Endocrinology

authors： Wong EH,Tan CH,Khoo HE,Ng FH,Lim KL,Ciaraldi TP

更新日期：1995-04-01 00:00:00

abstract：:The effects of increasing concentrations of leucine (0.2, 2.0, and 15.0 mmol/liter) on glucagon secretion from the perfused rat pancreas were examined at various glucose levels (0, 3.3, or 8.3 mmol/liter) and in the absence or presence of either arginine (5.0 mmol/liter) or glutamine (10.0 mmol/liter). At a low glucos...

journal_title：Endocrinology

authors： Leclercq-Meyer V,Marchand J,Woussen-Colle MC,Giroix MH,Malaisse WJ

更新日期：1985-03-01 00:00:00

abstract：:Four 1-yr-old, i.e. immature, monkeys (M. fascicularis) were treated with testosterone. For the first 21 weeks, they received testosterone capsules sc; thereafter for the remainder of 1 yr, they received weekly injections of 125 mg testosterone enanthate. Four similarly aged monkeys served as untreated controls. The t...

journal_title：Endocrinology

authors： Marshall GR,Wickings EJ,Nieschlag E

更新日期：1984-06-01 00:00:00