The effect of food deprivation of the peripheral metabolism of thyroxine in rats.

abstract：:T3 and rT3 production rates in the fetus account for roughly only a third of the total T4 production rate; thus, the fate of the majority of T4 produced in the fetus is unknown (the "T4 disposal gap"). We developed sensitive and specific T4 sulfate (T4S) and T3 sulfate (T3S) RIAs to investigate the roles of these comp...

journal_title：Endocrinology

authors： Wu S,Polk D,Wong S,Reviczky A,Vu R,Fisher DA

更新日期：1992-10-01 00:00:00

abstract：:The role of angiotensin II (AII) in human preadipocyte physiology has been investigated in primary cultures from human adipose tissue. Receptor binding studies indicated that human preadipocytes express a high affinity AII binding site of the AT1 subtype, as binding of 125I-labeled [Sar1,Ile8]AII was rapid, saturable,...

journal_title：Endocrinology

authors： Crandall DL,Armellino DC,Busler DE,McHendry-Rinde B,Kral JG

更新日期：1999-01-01 00:00:00

abstract：:Ionic mechanisms play an important role in the regulation of hormone secretion. The GHRH-induced GH release by human GH-secreting cells is transmitted through protein kinase A (PKA), which activates nonselective cation current (NSCC) and induces membrane depolarization, intracellular Ca2+ increase, and GH secretion. T...

journal_title：Endocrinology

authors： Yasufuku-Takano J,Takano K,Takei T,Fukumoto S,Teramoto A,Takakura K,Yamashita N,Fujita T

更新日期：1999-05-01 00:00:00

abstract：:We have shown previously that neonatal testicular gonocytes express platelet-derived growth factor receptors (PDGFR) alpha and beta. We report the expression of a novel PDGFRbeta (V1-PDGFRbeta) transcript in gonocytes of 3-d-old rat testes. V1-PDGFRbeta nucleotide sequence spans from intron 6 to exon 23 of the PDGFRbe...

journal_title：Endocrinology

authors： Wang Y,Culty M

更新日期：2007-05-01 00:00:00

abstract：:GH promotes the conversion of cultured preadipose 3T3 cells into adipose cells. The serum of most animals also promotes this differentiation. In order to determine the extent to which GH is responsible for the adipogenic activity of serum, we used a specific antiserum able to suppress completely the adipogenic activit...

journal_title：Endocrinology

authors： Nixon T,Green H

更新日期：1984-02-01 00:00:00

abstract：:The present study was designed to characterize the interaction of calcium and PTH in the control of renin release in isolated rat kidneys perfused in a closed circuit at constant flow. Kidneys were rendered nonfiltering using low perfusion pressures (70 mm Hg) and a hyperoncotic perfusate (100 g/liter BSA). Under thes...

journal_title：Endocrinology

authors： Helwig JJ,Musso MJ,Judes C,Nickols GA

更新日期：1991-09-01 00:00:00

abstract：:Recent research progress indicates a close link between ghrelin, a natural ligand of GH secretagogues receptor (GHS-R), and both the metabolic balance and body composition. To clarify the involvement of ghrelin and GHS-R in the process of adipogenesis, we measured the expression of GHS-R and peroxisome proliferator-ac...

journal_title：Endocrinology

authors： Choi K,Roh SG,Hong YH,Shrestha YB,Hishikawa D,Chen C,Kojima M,Kangawa K,Sasaki S

更新日期：2003-03-01 00:00:00

abstract：:Acute nephrectomy seriously impairs hypovolemic adrenal epinephrine (E) release in the anesthetized dog. That systemically delivered angiotensin II totally restores E release to acutely anephric dogs is equally clear, but the dose-response relationship of this angiotensin II effect is not known. Adrenal secretion rate...

journal_title：Endocrinology

authors： Badder EM,Duarte B,Seaton JF,Hamaji M,Harrison TS

更新日期：1985-11-01 00:00:00

abstract：:Neuronal remodeling in response to deafferenting lesions in the brain can be enhanced by estradiol (E2). Astrocytes are among the targets of E2 in complex interactions with neurons and may support or inhibit neuronal remodeling. In ovariectomized female rats given entorhinal cortex lesions, E2 replacement inhibited th...

journal_title：Endocrinology

authors： Rozovsky I,Wei M,Stone DJ,Zanjani H,Anderson CP,Morgan TE,Finch CE

更新日期：2002-02-01 00:00:00

abstract：:The action of excitatory amino acid agonists on endogenous somatostatin release was examined in primary cultures of rat diencephalic neurons. Increasing concentrations of glutamate stimulated somatostatin release in a dose-dependent manner. Since this effect was decreased by Mg2+, all experiments were performed in Mg2...

journal_title：Endocrinology

authors： Tapia-Arancibia L,Astier H

更新日期：1988-11-01 00:00:00

abstract：:The effects of dopamine (DA) on voltage-dependent Ca2+ currents were investigated in cultured rat lactotroph cells using the patch clamp recording technique. Each recorded cell was identified by the reverse hemolytic plaque assay. In the whole-cell configuration, two types of Ca2+ currents, L and T, were characterized...

journal_title：Endocrinology

authors： Lledo PM,Legendre P,Israel JM,Vincent JD

更新日期：1990-09-01 00:00:00

abstract：:Interleukin-6 (IL-6) stimulates the release of hCG from syncytiotrophoblast cells, but the effects of IL-6 and other cytokines on the release of placental lactogen (hPL) are unknown. To determine the effect of IL-6 on hPL release, we exposed an enriched fraction of trophoblast cells (prepared by the isopycnic centrifu...

journal_title：Endocrinology

authors： Stephanou A,Handwerger S

更新日期：1994-08-01 00:00:00

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：:Carboxyl-terminal fragments of PTH (C-PTH) appear to have biological properties different from those mediated by the amino-terminal portions of PTH and PTH-related peptide (PTHrP). To characterize a C-PTH receptor that may be involved in mediating these functions, we performed RRAs and affinity cross-linking studies w...

journal_title：Endocrinology

authors： Inomata N,Akiyama M,Kubota N,Jüppner H

更新日期：1995-11-01 00:00:00

abstract：:Inhibin was first characterized in mammals as a gonadal dimeric protein that inhibited pituitary follicle-stimulating hormone (FSH) secretion. As in mammals, the inhibin-specific α subunit (INHA/Inha/inha) has also been characterized in teleosts; however, its functions and physiological importance in fish reproduction...

journal_title：Endocrinology

authors： Lu H,Zhao C,Zhu B,Zhang Z,Ge W

更新日期：2020-12-01 00:00:00

abstract：:Previous studies have provided evidence that tumors associated with humoral hypercalcemia of malignancy produce a factor that shares certain biological properties with, but is not, native PTH. In the present study, media from Xenopus oocytes microinjected with polyadenylated RNA prepared from three human or animal tum...

journal_title：Endocrinology

authors： Broadus AE,Goltzman D,Webb AC,Kronenberg HM

更新日期：1985-10-01 00:00:00

abstract：:Fasting in rodents is characterized by decreases in serum T4 and T3 levels but no compensatory increase in serum TSH level. The types 1 and 2 deiodinases (D1 and D2) are postulated to play key roles in mediating these changes. However, serum T4 and T3 levels in fasted 5'-deiodinase-deficient mice decreased by at least...

journal_title：Endocrinology

authors： Galton VA,Hernandez A,St Germain DL

更新日期：2014-08-01 00:00:00

abstract：:Current in vivo and in vitro data indicate that progesterone (P) is required for epithelial proliferation in mammary glands of adult mice. P receptors (PgR) in adult mammary glands are under estrogenic regulation. By contrast in immature, pubertal 5-week-old mice, PgR are present only in low concentration and cannot b...

journal_title：Endocrinology

authors： Haslam SZ

更新日期：1988-02-01 00:00:00

abstract：:Glutamate (Glu) is the most prevalent excitatory neurotransmitter in the brain and has been implicated in the regulation of GnRH secretion in several mammalian species, including the monkey. To investigate the neuroanatomical basis for Glu-GnRH interactions, we performed an immunocytochemical study at both the light a...

journal_title：Endocrinology

authors： Goldsmith PC,Thind KK,Perera AD,Plant TM

更新日期：1994-02-01 00:00:00

abstract：:We have previously demonstrated that interleukin-1 beta (IL-1 beta), a putative intermediary in the ovulatory process, is a potent stimulator of ovarian PG biosynthesis. In this communication, we examine the possibility that this IL-1 effect reflects in part the induction of arachidonic acid mobilization by phospholip...

journal_title：Endocrinology

authors： Kol S,Ruutiainen-Altman K,Ben-Shlomo I,Payne DW,Ando M,Adashi EY

更新日期：1997-01-01 00:00:00

abstract：:Adipose tissue secretes a variety of bioactive signaling molecules, termed adipokines, which regulate numerous biological functions including appetite, energy balance, glucose homeostasis, and inflammation. Chemerin is a novel adipokine that regulates adipocyte differentiation and metabolism by binding to and activati...

journal_title：Endocrinology

authors： Ernst MC,Haidl ID,Zúñiga LA,Dranse HJ,Rourke JL,Zabel BA,Butcher EC,Sinal CJ

更新日期：2012-02-01 00:00:00

abstract：:Fasting increases hypothalamic neuropeptide Y (NPY) and agouti-related peptide (AGRP) messenger RNA (mRNA) and reduces hypothalamic POMC mRNA, and is also characterized by a reduction in plasma leptin, insulin, and glucose, each of which has been implicated in the regulation of hypothalamic gene expression. To further...

journal_title：Endocrinology

authors： Mizuno TM,Makimura H,Silverstein J,Roberts JL,Lopingco T,Mobbs CV

更新日期：1999-10-01 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：:Human IGF binding protein-3 (hIGFBP-3) overexpression in mice causes hyperglycemia, but its effect on β-cell function is unknown. We compared wild-type mice with mice overexpressing hIGFBP-3 [phoshoglycerate kinase (PGK)BP3] and mutant (Gly⁵⁶/Gly⁸⁰/Gly⁸¹)hIGFBP-3 devoid of IGF binding affinity (PGKmBP3). Intraperitone...

journal_title：Endocrinology

authors： Nguyen KH,Yao XH,Moulik S,Mishra S,Nyomba BL

更新日期：2011-06-01 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：:Hydrogen peroxide acts as electron acceptor in the oxidative reactions (iodination and coupling) by which the thyroid hormones are formed. Regulation of the generation of H2O2 was studied in monolayer cultures of the FRTL-5 rat thyroid cell line and in primary monolayer cultures of porcine thyroid cells. Both cell typ...

journal_title：Endocrinology

authors： Björkman U,Ekholm R

更新日期：1992-01-01 00:00:00

abstract：:To address the neural mediation of the eating-inhibitory effect of circulating glucagon-like peptide-1 (GLP-1), we investigated the effects of 1) intra-fourth ventricular infusion of the GLP-1 receptor antagonist exendin-9 or 2) area postrema lesion on the eating-inhibitory effect of intrameal hepatic portal vein (HPV...

journal_title：Endocrinology

authors： Punjabi M,Arnold M,Rüttimann E,Graber M,Geary N,Pacheco-López G,Langhans W

更新日期：2014-05-01 00:00:00

abstract：:Aged (16-month-old) female rats (n = 8/treatment) were injected for 12 days with GH (100 micrograms/100 g x day), PTH (8 micrograms/100 g x day), GH plus PTH, or vehicle (V) in an experiment designed to determine the effects of these hormones on intestinal mineral absorption in senescent rats. PTH and GH increased fra...

journal_title：Endocrinology

authors： Fleet JC,Bruns ME,Hock JM,Wood RJ

更新日期：1994-04-01 00:00:00

abstract：:To study possible mechanisms controlling diurnal changes in corticosterone (CORT) levels, we tested the CORT responses to ACTH in the morning (AM) and evening (PM) in male Wistar and Sprague-Dawley rats. Rat ACTH-(1-39) or human ACTH-(1-24) (3.75-15 ng/rat) was given as an iv bolus or an intraarterial infusion to (un)...

journal_title：Endocrinology

authors： Dijkstra I,Binnekade R,Tilders FJ

更新日期：1996-02-01 00:00:00

abstract：:We are investigating the mechanisms by which aromatic hydrocarbons, such as 3-methylcholanthrene (MC), suppress hepatic cytochrome P450 2C11 (CYP2C11) gene expression. CYP2C11 is an enzyme expressed in the liver of male rats and is regulated by a pulsatile pattern of GH secretion. We have previously shown that MC atte...

journal_title：Endocrinology

authors： Timsit YE,Riddick DS

更新日期：2002-09-01 00:00:00