Biosynthesis and posttranslational processing of the neurotensin/neuromedin N precursor in the rat medullary thyroid carcinoma 6-23 cell line. Effect of dexamethasone.

abstract：:Insulin-like growth factors (IGFs), when isolated from serum or tissue fluids, are usually found as part of a protein complex which also contains one of several IGF binding proteins (IGFBPs). Although some IGFBPs have been shown to alter interactions of IGFs with their receptors in vitro and can modify the responses o...

journal_title：Endocrinology

authors： Green BN,Jones SB,Streck RD,Wood TL,Rotwein P,Pintar JE

更新日期：1994-02-01 00:00:00

abstract：:We have previously demonstrated that cultured rat thyroid cells do not exhibit constitutive expression of major histocompatibility (MHC) class II antigens. Using reovirus types 1 and 3, we infected 1B-6 cells (a cloned derivative of the Fisher rat cell line FRTL-5), and found a dose-dependent induction of thyroid cell...

journal_title：Endocrinology

authors： Neufeld DS,Platzer M,Davies TF

更新日期：1989-01-01 00:00:00

abstract：:Homeostatic control of endocrine systems proceeds via feedforward (agonistic, stimulatory) and feedback (antagonistic, inhibitory) interactions mediated via implicit dose-response functions. However, neither the feedback/feedforward pathways nor the dose-response interfaces are directly observed in vivo. Thus, the goa...

journal_title：Endocrinology

authors： Keenan DM,Clarke IJ,Veldhuis JD

更新日期：2011-12-01 00:00:00

abstract：:Specialized metabolic sensors in the hypothalamus regulate blood glucose levels by influencing hepatic glucose output and hypoglycemic counterregulatory responses. Hypothalamic reactive oxygen species (ROS) may act as a metabolic signal-mediating responses to changes in glucose, other substrates and hormones. The role...

journal_title：Endocrinology

authors： Pauliina Markkula S,Lyons D,Yueh CY,Riches C,Hurst P,Fielding B,Heisler LK,Evans ML

更新日期：2016-12-01 00:00:00

abstract：:In fish spermatogenesis, the main action of progestins is generally regarded as the induction of sperm maturation. Our previous in vitro study demonstrated that a progestin, 17alpha,20beta-dihydroxy-4-pregnen-3-one (DHP), induced the initiation of meiosis in spermatogenesis in the Japanese eel (Anguilla japonica). In ...

journal_title：Endocrinology

authors： Ozaki Y,Higuchi M,Miura C,Yamaguchi S,Tozawa Y,Miura T

更新日期：2006-11-01 00:00:00

abstract：:The steady state levels of the prodynorphin-derived opioid peptides, dynorphin A, dynorphin B, and alpha-neo-endorphin, have been extensively studied in the magnocellular/posterior pituitary system of the rat. To determine whether the rat system serves as a general model for prodynorphin processing in the mammalian po...

journal_title：Endocrinology

authors： Dores RM,Akil H

更新日期：1987-01-01 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：:An ovarian thecal/interstitial cell preparation was obtained by enzymatic digestion of immature rat ovaries depleted of granulosa cells. A component in thecal/interstitial cell-conditioned medium inhibited specific binding of [125I]iodo-epidermal growth factor ([125I]EGF) to its cell surface receptor, as determined wi...

journal_title：Endocrinology

authors： Skinner MK,Lobb D,Dorrington JH

更新日期：1987-11-01 00:00:00

abstract：:In vivo, fibroblast growth factor-2 (FGF-2) inhibits longitudinal bone growth. Similarly, activating FGF receptor 3 mutations impair growth in achondroplasia and thanatophoric dysplasia. To investigate the underlying mechanisms, we chose a fetal rat metatarsal organ culture system that would maintain growth plate hist...

journal_title：Endocrinology

authors： Mancilla EE,De Luca F,Uyeda JA,Czerwiec FS,Baron J

更新日期：1998-06-01 00:00:00

abstract：:Steroid hormone synthesis is a vital function of the adrenal cortex, serves a critical role in gonadal function, and maintains pregnancy if normally executed in the placenta. The substrate for the synthesis of all steroid hormones is cholesterol, and its conversion to the first steroid, pregnenolone, by the cholestero...

journal_title：Endocrinology

authors： Yivgi-Ohana N,Sher N,Melamed-Book N,Eimerl S,Koler M,Manna PR,Stocco DM,Orly J

更新日期：2009-02-01 00:00:00

abstract：:Leptin regulates food intake and other activities through its hypothalamic receptor. Leptin receptors are also found in other organs, including the ovary. Direct effects of leptin in ovarian steroid production were studied in primary rat granulosa cells and in rat and human granulosa cell lines. Leptin (0.6-18 nM) sup...

journal_title：Endocrinology

authors： Barkan D,Jia H,Dantes A,Vardimon L,Amsterdam A,Rubinstein M

更新日期：1999-04-01 00:00:00

abstract：:The antithyroid drug 6-propylthiouracil (PTU) was previously shown in our laboratory to have an unexpectedly prolonged inhibitory effect on iodination in the thyroid glands of rats. Eighteen hours after injection of a relatively small dose, iodination in the thyroid remained inhibited by more than 90%. We previously s...

journal_title：Endocrinology

authors： Taurog A,Dorris ML

更新日期：1989-06-01 00:00:00

abstract：:Telomerase activity is essential for protection of cells against the telomere erosion that occurs with each round of cell replication, and thus appears to play a role in the indefinite replication potential of some, but not all, eukaryotic cells. In this regard, some tissues contain stem cells that have a long prolife...

journal_title：Endocrinology

authors： Banerjee PP,Banerjee S,Zirkin BR,Brown TR

更新日期：1998-03-01 00:00:00

abstract：:In previous studies we found that plasma angiotensinogen levels were reduced by lesions of the hypothalamic paraventricular nuclei. To determine if the decrease was caused by decreased secretion of hormones that normally stimulate angiotensinogen secretion by the liver, we correlated the changes in plasma angiotensino...

journal_title：Endocrinology

authors： Kjos T,Gotoh E,Tkacs N,Shackelford R,Ganong WF

更新日期：1991-08-01 00:00:00

abstract：:Based on the finding that retinoic acid (RA) increases 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] receptor number in ROS 17/2 cells, we investigated the effects of RA on the ability of 1,25-(OH)2D3 to regulate alkaline phosphatase activity and PTH-responsive adenylate cyclase in these cells. A maximally effective dose of...

journal_title：Endocrinology

authors： Grigoriadis AE,Petkovich PM,Rosenthal EE,Heersche JN

更新日期：1986-08-01 00:00:00

abstract：:The occupancy of atrial natriuretic peptide (ANP) receptors of the ANPA type in human neuroblastoma NB-OK-1 cells elevates cGMP. In this study, ANP concentrations of 10 nM or more increased total K+ uptake. Data obtained in the presence of bumetanide and/or ouabain demonstrated that 1 microM ANP induced a primary stim...

journal_title：Endocrinology

authors： Delporte C,Winand J,Poloczek P,Christophe J

更新日期：1993-07-01 00:00:00

abstract：:We looked for the presence of vitamin D-dependent intestinal calcium binding protein (CaBP), relative molecular mass (mol wt) about 10,000, in kidneys of mammals, birds, and reptiles, and compared the localization of this 10,000 mol wt CaBP with the localization of the 28,000 mol wt vitamin D-dependent CaBP. Antiserum...

journal_title：Endocrinology

authors： Rhoten WB,Bruns ME,Christakos S

更新日期：1985-08-01 00:00:00

abstract：:GH promotes not only longitudinal growth in children but is active throughout life in protein, fat, and carbohydrate metabolism. The multiple actions of GH start when GH binds to the cell surface-expressed GH receptor. Effectiveness of the hormone depends both on its presence in the circulation and the availability of...

journal_title：Endocrinology

authors： van Kerkhof P,Smeets M,Strous GJ

更新日期：2002-04-01 00:00:00

abstract：:We studied the effects of vitamin D deficiency and its correction by vitamin D or calcium-lactose supplementation on vitamin D receptor (VDR) expression in skin keratinocytes, kidney, and duodenum of adult rats. VDR messenger RNA (mRNA) was assayed by Northern blot, and VDR protein was determined immunocytochemically....

journal_title：Endocrinology

authors： Zineb R,Zhor B,Odile W,Marthe RR

更新日期：1998-04-01 00:00:00

abstract：:We have established a system, the CA77 rat medullary thyroid carcinoma cell line, for studying the products of somatostatin (SS) gene expression. Based on the amino acid sequence of proSS, we developed a RIA for the amino terminus of proSS (proSS-NTP) and demonstrated in acidic cell extracts two major proSS-NTP-contai...

journal_title：Endocrinology

authors： Aron DC,Roos BA

更新日期：1986-01-01 00:00:00

abstract：:Both the estrogen responsiveness and -binding capacity of cultured rat uterine cells were decreased dramatically when the medium was not changed at 24-h intervals. Treatment of cells for 24 h with 1 nM 17 beta-estradiol in fresh medium led to a 3-fold increase in progesterone receptor concentration, but without fresh ...

journal_title：Endocrinology

authors： Kassis JA,Walent JH,Gorski J

更新日期：1984-08-01 00:00:00

abstract：:The present studies were performed to determine whether the major biologically active metabolite of vitamin D3, 1,25-dihydroxycholecalciferol [1,25(OH)2D3], could influence the activities of rat colonic particulate guanylate cyclase and adenylate cyclase. To address these issues, colonocytes were harvested from Spragu...

journal_title：Endocrinology

authors： Khare S,Wilson DM,Tien XY,Dudeja PK,Wali RK,Sitrin MD,Brasitus TA

更新日期：1993-11-01 00:00:00

abstract：:The effects of L-leucine, D-leucine, and L-isoleucine upon the secretion of glucagon and insulin were investigated using the isolated, perfused rat pancreas. All experiments were conducted in the presence of 5.6 mM D-glucose. Ten-minute perfusions of 2, 5, and 10 mM L-leucine induced the release of glucagon and insuli...

journal_title：Endocrinology

authors： Pek S,Santiago JC,Tai TY

更新日期：1978-10-01 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：:The involvement of IGF-I in mammary carcinogenesis is well established, but the role of GH, as an autocrine growth factor for breast cancers is poorly understood. The goal of our study was to investigate whether antagonists of GHRH can interfere with the effects of GH and IGF-I in MXT mouse mammary cancers. GHRH antag...

journal_title：Endocrinology

authors： Szepeshazi K,Schally AV,Armatis P,Groot K,Hebert F,Feil A,Varga JL,Halmos G

更新日期：2001-10-01 00:00:00

abstract：:Amiodarone, a potent antiarrhythmic drug, contains 37.2% iodine by weight and may induce either hypo- or hyperthyroidism. The high iodine content of amiodarone may be responsible for both complications, but a cytotoxic effect of the drug on the thyroid resulting in thyroiditis has been reported. In the present study t...

journal_title：Endocrinology

authors： Chiovato L,Martino E,Tonacchera M,Santini F,Lapi P,Mammoli C,Braverman LE,Pinchera A

更新日期：1994-05-01 00:00:00

abstract：:Oxytocin stimulates phosphoinositide turnover in myometrium. To elucidate whether the coupling mechanism involves the interaction of oxytocin receptor with GTP-binding proteins, we examined oxytocin stimulation of guanosine triphosphatase (GTPase) activity and phospholipase-C activity in rat and human myometrial membr...

journal_title：Endocrinology

authors： Ku CY,Qian A,Wen Y,Anwer K,Sanborn BM

更新日期：1995-04-01 00:00:00

abstract：:Hypoxia plays a vital role in the progression of endometriosis. Additionally, integrin-mediated aberrant adhesion is also essential for establishment of endometriotic lesions. In this study, we sought to determine the function of hypoxia in integrin-mediated adhesion of endometrial stromal cells (ESCs) in endometriosi...

journal_title：Endocrinology

authors： Lin X,Dai Y,Xu W,Shi L,Jin X,Li C,Zhou F,Pan Y,Zhang Y,Lin X,Zhang S

更新日期：2018-04-01 00:00:00

abstract：:A 50-70% depletion in the anterior pituitary concentration of PRL occurred within 5 min of electrical stimulation of a single abdominal mammary nerve of urethane-anesthetized lactating rats previously nonsuckled for 6-8 h. The stimulus parameters were: 1-msec pulses, 10-20/sec at 5-30 V applied 5 sec on and 10 sec off...

journal_title：Endocrinology

authors： Mena F,Pacheco P,Grosvenor CE

更新日期：1980-02-01 00:00:00

abstract：:RIAs specific for the alpha-subunit of glycoprotein hormones were used to monitor the subunit conformation in ovine FSH and TSH and in recombinants of ovine LH alpha with (ovine and porcine) LH beta and hCG beta. Differences in log-logit slopes of the RIA dilution curves were interpreted to indicate changes, presumabl...

journal_title：Endocrinology

authors： Strickland TW,Puett D

更新日期：1982-07-01 00:00:00