Down regulation of insulin receptors in primary cultures of adult rat hepatocytes in monolayer.

abstract：:To test the hypothesis that vitamin D-dependent calcium-binding protein (CaBP) and active calcium (Ca) transport in the small intestine of vitamin D-replete lactating rats are regulated by dietary Ca intake, pregnant rats were given a high Ca (1.6% Ca and 1.4% phosphorus) or low Ca (0.1% Ca and 0.4% phosphorus) diet s...

journal_title：Endocrinology

authors： Bruns ME,Boass A,Toverud SU

更新日期：1987-07-01 00:00:00

abstract：:Localized expression of cytochromes P450 17 alpha-hydroxylase (P450c17) and aromatase (P450arom) was investigated in embryonic cell layers of elongating porcine blastocysts by immunocytochemistry. Blastocysts were flushed from the uterus on day 12 of pregnancy, fixed in paraformaldehyde, embedded in paraffin, sectione...

journal_title：Endocrinology

authors： Conley AJ,Christenson LK,Ford SP,Christenson RK

更新日期：1994-12-01 00:00:00

abstract：:Protein kinase-C (PKC) has been suggested as a possible mediator of the antigonadotropic action of prostaglandin F2 alpha (PGF2 alpha) in luteal cells. To examine this possibility, we evaluated the effects of phorbol ester [12-O-tetradecanoylphorbol-13-acetate (TPA)] in relation to those of PGF2 alpha on cAMP accumula...

journal_title：Endocrinology

authors： Musicki B,Aten RF,Behrman HR

更新日期：1990-03-01 00:00:00

abstract：:The role of nutrients and hormones in the regulation of glucagon release is investigated in pancreatic A cells purified by autofluorescence-activated cell sorting. Purified A cells lack secretory activity in 1-h incubation at 1.4 mM glucose. Their release mechanism can be activated by arginine, alanine, and glutamine,...

journal_title：Endocrinology

authors： Pipeleers DG,Schuit FC,Van Schravendijk CF,Van de Winkel M

更新日期：1985-09-01 00:00:00

abstract：:Recently, California condors (Gymnogyps californianus) have been reintroduced to coastal regions of California where they feed on marine mammal carcasses. There is evidence that coastal-dwelling condors experience reproductive issues, such as eggshell thinning, likely resulting from exposure to endocrine-disrupting ch...

journal_title：Endocrinology

authors： Felton RG,Steiner CC,Durrant BS,Keisler DH,Milnes MR,Tubbs CW

更新日期：2015-12-01 00:00:00

abstract：:We have measured the concentrations of vasopressin in sequential samples of cerebrospinal fluid (CSF) obtained from fetal lambs between 108 and 130 days gestation. There was a clear and significant (F = 4.46; P less than 0.005) rhythm in vasopressin concentrations in the CSF of nine fetuses, characterized by a mean tr...

journal_title：Endocrinology

authors： Stark RI,Daniel SS

更新日期：1989-06-01 00:00:00

abstract：:To understand the physiological role of ghrelin, it is crucial to study both the actions of ghrelin and the regulation of ghrelin secretion. Although ghrelin actions have been extensively revealed, the direct factors regulating ghrelin secretion by ghrelin-producing cells (X/A-like cells), however, is not fully unders...

journal_title：Endocrinology

authors： Iwakura H,Ariyasu H,Hosoda H,Yamada G,Hosoda K,Nakao K,Kangawa K,Akamizu T

更新日期：2011-07-01 00:00:00

abstract：:The relationship between serum levels of rat GH (rGH), rat PRL (rPRL), corticosterone, estrogen, and testosterone and the liver-binding sites specific to [125I]iodo-human GH (hGH), -human PRL (hPRL), and -rPRL were investigated in normal rats, in rats bearing the GH- and PRL-secreting tumor (GH3), and in rats 14 days ...

journal_title：Endocrinology

authors： Furuhashi N,Fang VS

更新日期：1978-12-01 00:00:00

abstract：:The presence of estrogen receptors (ERs) in nonneural cells in brain, including glia, ependyma, and endothelia, has not previously been documented with electron microscopy. This study employed immunocytochemistry to investigate whether ER immunoreactivity (ER-ir) is present in glial, ependymal, or endothelial cells in...

journal_title：Endocrinology

authors： Langub MC Jr,Watson RE Jr

更新日期：1992-01-01 00:00:00

abstract：:After incubation with 0.5 mM isobutylmethylxanthine, 1 microM dexamethasone, and 1 microM insulin for 72 h, 3T3-L1 cells acquire the phenotypic characteristics of mature adipocytes, including a hormone-sensitive particulate cAMP phosphodiesterase activity. In addition, adipocytes contain soluble cAMP and calmodulin-se...

journal_title：Endocrinology

authors： Elks ML,Manganiello VC,Vaughan M

更新日期：1984-10-01 00:00:00

abstract：:Osteoblasts are known to produce osteoclast-stimulating activity (OSA). The aim of the current study was to relate the expression of OSA to the osteoblastic phenotype and examine its regulation by calciotropic hormones. The study was performed with the normal osteoblastic cell clone CRP 10/30 and the preosteoblastic c...

journal_title：Endocrinology

authors： Collin P,Guenther HL,Fleisch H

更新日期：1992-09-01 00:00:00

abstract：:Nitrogenous compounds were studied for their effect on cGMP levels in the thyroid. Several agents, including sodium nitrite and hydroxylamine, could generate a rise of over 100-fold in cGMP. At a concentration of 20 mM, HN2OH and NaNO2 significantly reduced cAMP levels previously generated by 0.5 mU/ml TSH. If the sli...

journal_title：Endocrinology

authors： Spaulding SW

更新日期：1979-09-01 00:00:00

abstract：:Bone morphogenetic protein 2 (BMP2) belongs to the transforming growth factor-β superfamily and plays a critical role in regulating ovarian follicle function. Currently, the role of BMP2 during cumulus expansion remains to be determined. The aim of this study was to investigate the effect of BMP2 on the regulation of ...

journal_title：Endocrinology

authors： Bai L,Chang HM,Cheng JC,Chu G,Leung PCK,Yang G

更新日期：2017-10-01 00:00:00

abstract：:The GnRH neurosecretory system undergoes marked structural and functional changes throughout life. The initial goal of this study was to examine the neuroanatomical relationship between GnRH neurons and a glycoprotein implicated in neuroplasticity, the polysialylated form of neural cell adhesion molecule (PSA-NCAM). U...

journal_title：Endocrinology

authors： Viguié C,Jansen HT,Glass JD,Watanabe M,Billings HJ,Coolen L,Lehman MN,Karsch FJ

更新日期：2001-03-01 00:00:00

abstract：:In the course of previous studies using continuous monitoring of the electrophysiological correlates of GnRH pulse generator activity, characterized by episodic increases in hypothalamic multiunit electrical activity (MUA volley), it was noticed that the nocturnal slowing of pulse generator frequency was an acute phen...

journal_title：Endocrinology

authors： O'Byrne KT,Thalabard JC,Chiappini SE,Chen MD,Hotchkiss J,Knobil E

更新日期：1993-10-01 00:00:00

abstract：:Experiments were carried out to characterize the prolactin stimulation of labeled uridine uptake into mammary gland explants which were initially preincubated for 2 days in medium containing insulin plus hydrocortisone. Prolactin was found to enhance labeled uridine uptake after 4 h but not after 2 h when uridine conc...

journal_title：Endocrinology

authors： Rillema JA

更新日期：1975-05-01 00:00:00

abstract：:In situ hybridization histochemistry was used to monitor the expression of 3beta-hydroxysteroid dehydrogenase, delta4-isomerase (3betaHSD) and cytochrome P450 11beta-hydroxylase (P45011beta) messenger RNA (mRNA) in adult rat adrenals after stimulation in vivo. In Exp 1, adrenals were collected from rats injected with ...

journal_title：Endocrinology

authors： Engeland WC,Levay-Young BK,Rogers LM,Fitzgerald D

更新日期：1997-06-01 00:00:00

abstract：:We and others have recently shown that 1alpha,25-dihydroxyvitamin D3 [1,25-(OH)2D3] significantly inhibits cell proliferation and increases secretion of prostate-specific antigen (PSA) in LNCaP cells, an androgen-responsive human prostate cancer cell line. The present study was designed to investigate the possible int...

journal_title：Endocrinology

authors： Zhao XY,Ly LH,Peehl DM,Feldman D

更新日期：1997-08-01 00:00:00

abstract：:The rat prostate is dependent on androgen for normal growth and differentiation. In addition, the organ undergoes rapid cell death upon withdrawal of androgen on castration, and the atrophied tissue is capable of regrowth after androgen replacement in adult animals. In our search for novel factor(s) that participate i...

journal_title：Endocrinology

authors： Nishi N,Shoji H,Miyanaka H,Nakamura T

更新日期：2000-09-01 00:00:00

abstract：:The mineralocorticoid receptor (MR), a member of the nuclear receptor superfamily of transcription factors, is activated by aldosterone and mediates its natriferic action in tight epithelia. MR is also expressed in nonepithelial tissues. Importantly, it mediates the deleterious effects of inappropriately high aldoster...

journal_title：Endocrinology

authors： Aguilar-Sánchez C,Hernández-Díaz I,Lorenzo-Díaz F,Navarro JF,Hughes TE,Giraldez T,Alvarez de la Rosa D

更新日期：2012-07-01 00:00:00

abstract：:Estradiol-17beta (E2) is suspected to exert a role in the regulation of testicular activity. Using a nonmammalian vertebrate model (the frog, Rana esculenta), we have investigated whether c-fos activity is detectable in the testis during the annual sexual cycle and whether E2 exerts a regulatory role on spermatogenesi...

journal_title：Endocrinology

authors： Cobellis G,Pierantoni R,Minucci S,Pernas-Alonso R,Meccariello R,Fasano S

更新日期：1999-07-01 00:00:00

abstract：:Insulin receptors were measured in cultured Zajdela rat hepatoma cells (ZHC cells), a stable cell line which presents differentiated hepatic functions. The number of sites was 50,000/cell at 2 C, and the dissociation constant for high affinity binding was 1.6 x 10(-10) M. Down-regulation of receptors occurred rapidly ...

journal_title：Endocrinology

authors： Capeau J,Flaig-Staedel C,Beck JP,Picard J

更新日期：1982-09-01 00:00:00

abstract：:The receptor for the orexigenic peptide, ghrelin, is one of the most constitutively active 7TM receptors known, as demonstrated under in vitro conditions. Change in expression of a constitutively active receptor is associated with change in signaling independent of the endogenous ligand. In the following study, we fou...

journal_title：Endocrinology

authors： Petersen PS,Woldbye DP,Madsen AN,Egerod KL,Jin C,Lang M,Rasmussen M,Beck-Sickinger AG,Holst B

更新日期：2009-11-01 00:00:00

abstract：:To ascertain whether changes in the pattern of GnRH release from the hypothalmus occur during the 4-day rat estrous cycle, the pattern of LH release was characterized on each day of the estrous cycle, and the results were interpreted in light of the changes in pituitary responsiveness to GnRH previously described by t...

journal_title：Endocrinology

authors： Fox SR,Smith MS

更新日期：1985-04-01 00:00:00

abstract：:Lactating rats exhibit stable individual differences in pup licking/grooming (LG) over the first week postpartum. Such naturally occurring variations in maternal behavior are associated with differences in estrogen-inducible oxytocin receptors in the medial preoptic area (MPOA) of the hypothalamus. We compared levels ...

journal_title：Endocrinology

authors： Champagne FA,Weaver IC,Diorio J,Sharma S,Meaney MJ

更新日期：2003-11-01 00:00:00

abstract：:The brain has traditionally been considered to be a target site of peripheral steroid hormones. By contrast, new findings over the past decade have shown that the brain itself also has the capability of forming steroids de novo, the so-called neurosteroids. De novo neurosteroidogenesis in the brain from cholesterol is...

journal_title：Endocrinology

authors： Tsutsui K

更新日期：2008-06-01 00:00:00

abstract：:Effect of cytosolic 3,5,3'-triiodo-L-thyronine (T3)-binding protein (CTBP) on [125I]T3 binding to nuclei was investigated in vitro. CTBP and nuclei were prepared from rat kidney. CTBP was inactivated by incubating with charcoal and activated by incubating with NADPH or with NADP and dithiothreitol. Two complexes of CT...

journal_title：Endocrinology

authors： Hashizume K,Miyamoto T,Kobayashi M,Suzuki S,Ichikawa K,Yamauchi K,Ohtsuka H,Takeda T

更新日期：1989-06-01 00:00:00

abstract：:We have studied regulation of the glucose transporter by thyroid hormone in ARL 15 cells, a thyroid hormone-responsive cell line derived from rat liver, T3 treatment (5 x 10(-8) M for 48 h) of confluent cell monolayers grown in thyroid hormone-deficient medium increased the rate of uptake of [3H] 2-deoxyglucose by 2.3...

journal_title：Endocrinology

authors： Weinstein SP,Watts J,Graves PN,Haber RS

更新日期：1990-03-01 00:00:00

abstract：:The study of epigenetics allows for the understanding of gene × environmental interactions and provides a mechanism by which brief internal or external environmental changes can shape lasting differences in gene function and behavior. Epigenetic processes appear to impact a wide variety of physiological processes with...

journal_title：Endocrinology

authors： Auger AP,Auger CJ

更新日期：2011-02-01 00:00:00

abstract：:Defining the molecular genetics of diabetes gives new insight into the underlying etiology and so should help improve treatment. The genetic etiology is now known for most patients with beta-cell monogenic diabetes, allowing genetic classification. We review how this genetic knowledge alters treatment. Patients with a...

journal_title：Endocrinology

authors： Hattersley AT,Pearson ER

更新日期：2006-06-01 00:00:00