Lactogenesis in explant cultures of mammary tissue from pregnant cows.

abstract：:The levels of the GnRH receptor (GnRHR) and its messenger RNA depend on the pattern of administration of GnRH. In this study, internal deletion mutants in a luciferase reporter gene vector (GnRHR-pXP2) containing a 1226-bp promoter fragment of mouse GnRHR gene were used to examine the regulation of GnRHR gene transcri...

journal_title：Endocrinology

authors： Maya-Núñez G,Conn PM

更新日期：1999-08-01 00:00:00

abstract：:Angiotensin II (AngII) stimulates aldosterone biosynthesis in the zona glomerulosa of the adrenal cortex. AngII also triggers the MAPK pathways (ERK1/2 and p38). Because ERK1/2 phosphorylation is a transient process, phosphatases could play a crucial role in the acute steroidogenic response. Here we show that the dual...

journal_title：Endocrinology

authors： Casal AJ,Ryser S,Capponi AM,Wang-Buholzer CF

更新日期：2007-11-01 00:00:00

abstract：:Kallikreins are a multigene subfamily of serine proteases that may have a role in processing precursors of polypeptide hormones and growth factors. The epidermal growth factor (EGF) immunoreactivity in mouse milk is derived from the membrane-bound EGF precursor located on the lumenal border of the alveolar cells in th...

journal_title：Endocrinology

authors： Jahnke GD,Chao J,Walker MP,Diaugustine RP

更新日期：1994-11-01 00:00:00

abstract：:Cysteamine [2-aminoethanethiol (CySH)] reduces measurable PRL concentrations in vivo and in vitro. Since secretion is also inhibited, CySH may block conversion from a poorly assayable hormone storage form(s) to readily assayable, releasable PRL. This would represent a previously unrecognized mechanism for secretory re...

journal_title：Endocrinology

authors： Lorenson MY,Jacobs LS

更新日期：1984-10-01 00:00:00

abstract：:Nitric oxide (NO) is a free radical produced by the action of NO synthases (NOS) and is known to be involved in the regulation of many reproductive events that occur in the oviducts. The oviducts are highly specialized organs that play crucial roles in reproduction by providing an optimal environment for the final mat...

journal_title：Endocrinology

authors： Lapointe J,Roy M,St-Pierre I,Kimmins S,Gauvreau D,MacLaren LA,Bilodeau JF

更新日期：2006-12-01 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：:The effect of methysergide (MES, 2.5 mg/100 g body wt), a serotonin antagonist, on prolactin release has been studied in lactating and ovariectomized rats. MES caused significant increases in prolactin release in both animals. Studies in ovariectomized, hypophysectomized rats indicate that this effect is not due to a ...

journal_title：Endocrinology

authors： Gallo RV,Rabii J,Moberg GP

更新日期：1975-11-01 00:00:00

abstract：:Pineal denervation by superior cervical ganglionectomy (Gx) decreased high affinity binding of estradiol (E2) to the pineal cytosol of female rats and of testosterone to the cytosol of male rats by 40 and 26% and by 75 and 80%, 5 and 14 days after sugery; hormone binding remained unchanged up to 24 h after surgery. Bi...

journal_title：Endocrinology

authors： Cardinali DP,Gómez E,Rosner JM

更新日期：1976-04-01 00:00:00

abstract：:Once reserved solely for the treatment of short stature, the now readily available recombinant GH has expanded the use of the hormone to include the treatment of cardiovascular, renal, muscular, skeletal, immunological, psychosocial, and metabolic abnormalities associated with GH deficiency. There are also proposals f...

journal_title：Endocrinology

authors： Thangavel C,Shapiro BH

更新日期：2007-06-01 00:00:00

abstract：:The electrophoretic distribution of the polypeptides synthesized by bovine granulosa cell cultures after metabolic labeling with [35S]methionine has been analyzed by double gel electrophoresis. The fluctuations of 35 polypeptides have been followed as a function of the size of the follicles from which cultures origina...

journal_title：Endocrinology

authors： Savion N,Gospodarowicz D

更新日期：1980-12-01 00:00:00

abstract：:Synthetic glucocorticoids (GCs), including dexamethasone (DEX), are powerful anti-inflammatory drugs. Long-term use of GCs, however, can result in metabolic side effects such as hyperglycemia, hepatosteatosis, and insulin resistance. The GC receptor (GR) and liver X receptors (LXRα and LXRβ) regulate overlapping genes...

journal_title：Endocrinology

authors： Patel R,Magomedova L,Tsai R,Angers S,Orellana A,Cummins CL

更新日期：2017-04-01 00:00:00

abstract：:TSH initiates its action by binding to specific membrane receptors' thyroid cells and induces activation of the adenylate cyclase-cAMP cascade. The factors involved in the regulation of TSH receptors are poorly known, except for the TSH dose-dependent regulatory effect. The fact that the thyroid gland of Graves' patie...

journal_title：Endocrinology

authors： Denereaz N,Lemarchand-Beraud T

更新日期：1995-04-01 00:00:00

abstract：:Bovine TSH (bTSH) was subjected to reverse phase HPLC using a Synchropak RP-P C18 column. Elution was with a linear gradient of 0-50% 1-propranol in 0.1% trifluoroacetic acid. Individual fractions were assayed for TSH bioactivity by the cultured thyroid cell cAMP response assay. Optimum separation of biologically acti...

journal_title：Endocrinology

authors： Rapoport B,Seto P

更新日期：1985-04-01 00:00:00

abstract：:Alpha-calcitonin gene-related peptide (alphaCGRP) is released mainly from sensory and motor nerves in response to physiological stimuli. Despite well-documented pharmacological effects, its primary physiological role has thus far remained obscure. Increased lipid content, particularly in skeletal muscle and liver, is ...

journal_title：Endocrinology

authors： Danaher RN,Loomes KM,Leonard BL,Whiting L,Hay DL,Xu LY,Kraegen EW,Phillips AR,Cooper GJ

更新日期：2008-01-01 00:00:00

abstract：:Human pituitary prolactin (hPRL) contains a single major component. Upon iodination by a lactoperoxidase procedure approximately 50% of this component remains ulaltered in molecular size and net charge by the criteria of quantitative polyacrylamide gel electrophoresis (PAGE). Aminiotic fluid hPRL contains two componen...

journal_title：Endocrinology

authors： Rogol AD,Chrambach A

更新日期：1975-08-01 00:00:00

abstract：:The structural elements of 19-norprogestogens which may be essential for binding to progesterone and estradiol-17beta(E2) receptors were investigated in the rabbit uterine cytosol. The kinetic study showed that 19-nor-progestogens are competitive inhibitors of progesterone-receptor (8S) binding and E2-receptor binding...

journal_title：Endocrinology

authors： Tamaya T,Nioka S,Furuta N,Shimura T,Takano N

更新日期：1977-06-01 00:00:00

abstract：:Steroid receptor activation in developing brain influences a variety of cellular processes that endure into adulthood, altering both behavior and physiology. We report that estrogen receptors can be activated in a ligand-independent manner within developing brain by membrane dopamine receptors. Neonatal treatment with...

journal_title：Endocrinology

authors： Olesen KM,Jessen HM,Auger CJ,Auger AP

更新日期：2005-09-01 00:00:00

abstract：:Insulin and epidermal growth factor (EGF) share a number of metabolic actions, including stimulation of protein synthesis and growth in certain tissues, and activation of apparent receptor tyrosine kinase activities. We have shown that insulin and EGF promote the phosphorylation of a number of intracellular proteins i...

journal_title：Endocrinology

authors： Blackshear PJ,Nemenoff RA,Avruch J

更新日期：1984-01-01 00:00:00

abstract：:Although estrogens and estrogen receptors (ERs) are known to function in the male brain and reproductive tract, few studies have evaluated their involvement in the male hematopoietic and immune systems. This study was undertaken to determine the role of ERalpha in hematopoietic progenitor and B lymphocyte maturation. ...

journal_title：Endocrinology

authors： Thurmond TS,Murante FG,Staples JE,Silverstone AE,Korach KS,Gasiewicz TA

更新日期：2000-07-01 00:00:00

abstract：:The hypothesis that hydrogen peroxide generation occurs in the corpora lutea of superovulated rats during luteolysis was tested using a peroxide-dependent inhibitor of catalase, 3-amino-1,2,4-triazole (AT). Luteal regression was induced during midpseudopregnancy by injection of 500 micrograms prostaglandin F2 alpha (P...

journal_title：Endocrinology

authors： Riley JC,Behrman HR

更新日期：1991-04-01 00:00:00

abstract：:Progesterone (P4) is essential for female fertility. The objective of this study was to evaluate the functional requirement of the nonclassical P4 receptor (PGR), PGR membrane component 1, in regulating female fertility. To achieve this goal, the Pgrmc1 gene was floxed by insertion of loxP sites on each side of exon 2...

journal_title：Endocrinology

authors： McCallum ML,Pru CA,Niikura Y,Yee SP,Lydon JP,Peluso JJ,Pru JK

更新日期：2016-09-01 00:00:00

abstract：:A serially transplantable, chemically induced pancreatic islet cell tumor was developed in Lewis rats. The original tumor was induced by the administration of streptozotocin and nicotinamide. It was subsequently maintained by ip or sc transplantation of tissue fragments into recipient animals. Tumors generally grew to...

journal_title：Endocrinology

authors： Chick WL,Appel MC,Weir GC,Like AA,Lauris V,Porter JG,Chute RN

更新日期：1980-10-01 00:00:00

abstract：:The increased type 1 iodothyronine deiodinase expression in hyperthyroid patients increases the fraction of plasma T3 generated from T4 by the propylthiouracil-sensitive pathway. In this study, we extend our analysis of the thyroid hormone response elements (TREs) in the 5' flanking region of the human dio1 gene. The ...

journal_title：Endocrinology

authors： Zhang CY,Kim S,Harney JW,Larsen PR

更新日期：1998-03-01 00:00:00

abstract：:3 beta-Hydroxy-5-ene-steroid dehydrogenase/delta 5-delta 4-isomerase (3 beta HSD) is a NAD(+)-dependent membrane-bound enzyme that catalyzes the oxidation of delta 5-3 beta-hydroxysteroids to delta 4-3-keto structures during adrenal, gonadal, and placental steroidogenesis. Enzyme activity is located in both microsomes...

journal_title：Endocrinology

authors： Sauer LA,Chapman JC,Dauchy RT

更新日期：1994-02-01 00:00:00

abstract：:To elucidate the metabolic fate and possible role of androgens and their derivatives during primate fetal development, aromatase (AROM), 5 alpha-reductase (5 alpha R), and androgen receptor (AR; cytosolic) levels were assessed in the brain, heart (HRT), lung (LNG), and skeletal muscle (MUS) of fetal rhesus monkeys. An...

journal_title：Endocrinology

authors： Sholl SA,Goy RW,Kim KL

更新日期：1989-02-01 00:00:00

abstract：:Specific serum binding of 25-hydroxy-cholecalciferol (25-OHD3) was measured by saturation analysis in rats of various ages, and during vitamin D deprivation. The serum binding capacity for 25-OHD3 was observed to increase until age 6-8 weeks, then decline and remain stable thereafter at 3.7 x 10(-6) M. The 25-hydroxyv...

journal_title：Endocrinology

authors： Rojanasathit S,Haddad JG

更新日期：1977-03-01 00:00:00

abstract：:Six pony mares were ovariectomized (OVX) on day 16 of diestrus during June and July, 1972, to study short term changes in plasma luteinizing hormone (LH) concentrations. Plasma LH was higher (P less than .05) 3 days after OVX (1.76 ng/ml) than the day after OVX (1.01 ng/ml), and a gradual increase occurred over the fi...

journal_title：Endocrinology

authors： Garcia MC,Ginther OJ

更新日期：1976-04-01 00:00:00

abstract：:The purpose of these studies was to determine whether changes in FSH receptors correlated with FSH-induced attenuation of FSH-responsive adenylyl cyclase in immature porcine granulosa cells. Cells were incubated with FSH (1-1000 ng/ml) for up to 24 h, treated with acidified medium (pH 3.5) to remove FSH bound to cells...

journal_title：Endocrinology

authors： Ford KA,LaBarbera AR

更新日期：1988-11-01 00:00:00

abstract：:In higher primates, FSH secretion appears to be regulated by a control system consistent with that described by the classical inhibin hypothesis. The purpose of the present experiment was to examine the time course of inhibin's action to suppress FSH secretion in the intact adult male rhesus monkey. To this end, five ...

journal_title：Endocrinology

authors： Ramaswamy S,Pohl CR,McNeilly AS,Winters SJ,Plant TM

更新日期：1998-08-01 00:00:00

abstract：:Insulin-like growth factor (IGF) action in the brain is modulated by IGF-binding proteins (IGFBPs) whose abundance can be altered by other locally expressed growth factors. However, the mechanisms involved are unclear. We here employed the neuroblastoma cell line SK-N-MC as a model to define the mechanisms involved in...

journal_title：Endocrinology

authors： Russo VC,Rekaris G,Baker NL,Bach LA,Werther GA

更新日期：1999-07-01 00:00:00