Evidence of a role for retinoic acid (vitamin A-acid) in the maintenance of testosterone production in male rats.

abstract：:This report describes properties of highly purified cathepsin-B and an additional cysteine proteinase, designated cysteine proteinase I, obtained from human thyroids. Both enzymes are localized to lysosomes. The activity profile of cysteine proteinase I combined with its sensitivity to the active site inhibitor Z-Phe-...

journal_title：Endocrinology

authors： Dunn AD,Dunn JT

更新日期：1988-08-01 00:00:00

abstract：:Removal of the 18-hydroxy group of the hemiacetal form of aldosterone transforms its activity from that of pure agonist to predominant antagonist. The 18-deoxy derivative possesses one third of the binding affinity of aldosterone for the cytoplasmic mineralocorticoid receptor of rat kidney and exhibits an approximate ...

journal_title：Endocrinology

authors： Ulick S,Marver D,Adam WR,Funder JW

更新日期：1979-05-01 00:00:00

abstract：:The intermediate filament protein nestin was originally found to be expressed in neuronal progenitor cells, but recent studies have shown that other cell types, including endocrine and vascular endothelial cells, express nestin. In the present study, we examined the expression and localization of nestin in the ovaries...

journal_title：Endocrinology

authors： Takahashi N,Itoh MT,Ishizuka B

更新日期：2008-01-01 00:00:00

abstract：:The role of the paraventricular nucleus-dorsal anterior hypothalamus (PVN-DAHA) in the control of anterior pituitary gland secretion of FSH and LH in castrated male and female rats was examined. Bilateral radiofrequency lesions of the PVN-DAHA in chronically ovariectomized (OVX) rats lowered plasma FSH levels by 33% (...

journal_title：Endocrinology

authors： Lumpkin MD,McCann SM

更新日期：1984-12-01 00:00:00

abstract：:Male Sprague-Dawley rats were infused continuously for 13 days with vehicle or 75 pmol (31.2 ng)/day 1,25-dihydroxyvitamin D3 [1,25-(OH)2D3] by means of Alzet osmotic minipumps implanted s.c. Animals infused with 1,25-(OH)2D3 exhibited mild hypercalcemia (11.2 vs. 10.2 mg/dl in controls), a 136% increase in the serum ...

journal_title：Endocrinology

authors： Wronski TJ,Halloran BP,Bikle DD,Globus RK,Morey-Holton ER

更新日期：1986-12-01 00:00:00

abstract：:Cripto-1 (TDGF1) is a multifunctional signaling factor that stimulates cellular effects, including proliferation, migration, survival, epithelial-to-mesenchymal transition, and angiogenesis, to regulate embryogenesis, tissue homeostasis, and tumorigenesis. Those cell behaviors are also associated with implantation of ...

journal_title：Endocrinology

authors： Gershon E,Hadas R,Elbaz M,Booker E,Muchnik M,Kleinjan-Elazary A,Karasenti S,Genin O,Cinnamon Y,Gray PC

更新日期：2018-04-01 00:00:00

abstract：:Gene expression of fibroblast growth factor-9 (FGF9) is decreased in granulosa cells (GC) of cystic follicles compared with normal dominant follicles in cattle. The objectives of this study were to investigate the effects of FGF9 on GC steroidogenesis, gene expression, and cell proliferation and to determine the hormo...

journal_title：Endocrinology

authors： Schreiber NB,Spicer LJ

更新日期：2012-09-01 00:00:00

abstract：:The contribution of the insulin receptor beta-subunit acidic domain, amino acids 1262-1291, to receptor function was analyzed. A mutant insulin receptor complementary DNA lacking this domain was created. Rat-1 fibroblasts were stably transfected with plasmids containing the mutant insulin receptor complementary DNA an...

journal_title：Endocrinology

authors： Rolband GC,Williams JF,Webster NJ,Olefsky JM

更新日期：1993-09-01 00:00:00

abstract：:Pulsatile administration of glucagon to perifused rat hepatocytes stimulates hepatocyte glucose production (HGP) more effectively than continuous administration. Having established that this effect was due to delayed relaxation of glucagon-stimulated HGP (t1/2 for decay = 3.54 +/- 0.60 min) we wished to examine the me...

journal_title：Endocrinology

authors： Weigle DS,Sweet IR,Goodner CJ

更新日期：1987-08-01 00:00:00

abstract：:Calcitonin (CT) and related peptides, such as CT gene-related peptide and salmon CT (sCT)-like peptide, are present in the rat nervous system and the pituitary gland, and sCT markedly inhibits basal and TRH-stimulated PRL release from anterior pituitary (AP) cells. Because TRH-induced PRL release is known to involve i...

journal_title：Endocrinology

authors： Shah GV,Kennedy D,Dockter ME,Crowley WR

更新日期：1990-08-01 00:00:00

abstract：:The differential regulation of neurotensin (NT), calcitonin (CT), and CT gene-related peptide (CGRP) production was studied in the clonal, rat C cell-derived, 44-2C cell line. Two experimental paradigms were used: cells were incubated with maximally effective concentrations of calcium (4.0 mM); alternatively, cells we...

journal_title：Endocrinology

authors： Zeytin FN,Rusk S,Leff SE

更新日期：1987-07-01 00:00:00

abstract：:Active immunization against GRF at 6 months of age delays puberty in beef heifers. The objectives of the present study were to determine whether active immunization against GRF at an earlier age would affect normal onset of puberty and follicular growth and to determine whether these changes were related to alteration...

journal_title：Endocrinology

authors： Cohick WS,Armstrong JD,Whitacre MD,Lucy MC,Harvey RW,Campbell RM

更新日期：1996-05-01 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：:The aim of this study was to characterize the dynamics and functional relevance of interleukin-1 beta (IL-1 beta)-induced nitric oxide production in isolated pancreatic islets. Thus, islets were isolated from adult rats, precultured for 3-5 days in medium RPMI-1640 plus 10% fetal calf serum, and then exposed to IL-1 b...

journal_title：Endocrinology

authors： Welsh N,Eizirik DL,Bendtzen K,Sandler S

更新日期：1991-12-01 00:00:00

abstract：:C-type natriuretic peptide (CNP) is produced by the vascular smooth muscle cells (SMCs) of injured and atherosclerotic arteries, in which it may exert autocrine control over SMCs by binding to its principal receptors, NPR-B and NPR-C, but few studies have examined the factors that regulate CNP expression in human SMCs...

journal_title：Endocrinology

authors： Mendonça MC,Doi SQ,Glerum S,Sellitti DF

更新日期：2006-09-01 00:00:00

abstract：:To investigate the mechanism of insulin insensitivity during fasting and hyperresponsiveness to insulin after refeeding, insulin binding, 2-deoxyglucose uptake and glucose oxidation were measured in adipocytes from three groups of rats: control, 48 h fasted, and 48 h refed after 48 h fasting. In 48 h fasted rats, fat ...

journal_title：Endocrinology

authors： Kasuga M,Akanuma Y,Iwamoto Y,Kosaka K

更新日期：1977-05-01 00:00:00

abstract：:Aldosterone plays a major role in regulating sodium and potassium flux in epithelial tissues such as kidney and colon. Recent evidence suggests that serum- and glucocorticoid-regulated kinase (SGK) is induced by aldosterone and acts as a key mediator of aldosterone action in epithelial tissues. Induction of SGK messen...

journal_title：Endocrinology

authors： Bhargava A,Fullerton MJ,Myles K,Purdy TM,Funder JW,Pearce D,Cole TJ

更新日期：2001-04-01 00:00:00

abstract：:The effect of naloxone (N-allylnoroxymorphone), a narcotic antagonist, on the morphine blockade of ovulation was studied. Female rats were treated with morphine (50 mg/kg) at the critical period, resulting in ovulatory blockade. The administration of naloxone (0.5 mg/kg) effectively reversed the anti-ovulatory effect ...

journal_title：Endocrinology

authors： Packman PM,Rothchild JA

更新日期：1976-07-01 00:00:00

abstract：:To investigate the physiological role of GRF and somatostatin (SRIF) in GH secretion in adult male rats, we prepared in vitro models using the perifusion system of cultured rat anterior pituitary cells exposed to various combinations of human GRF-(1-44)NH2 (hGRF) and SRIF. We studied the following three models on GRF ...

journal_title：Endocrinology

authors： Sato M,Takahara J,Fujioka Y,Niimi M,Irino S

更新日期：1988-10-01 00:00:00

abstract：:Livers from fed rats (180-240 g) were perfused noncyclically with a hemoglobin-free medium in vitro to determine whether vasoactive intestinal peptide (VIP) increases hepatic glucose production through a cAMP- or a Ca(2+)-dependent mechanism. Glucose output did not increase, but cAMP increased maximally during 10(-9) ...

journal_title：Endocrinology

authors： Saito K,Yamatani K,Manaka H,Takahashi K,Tominaga M,Sasaki H

更新日期：1992-04-01 00:00:00

abstract：:Although prolactinomas can be effectively treated with dopamine agonists, about 20% of patients develop dopamine resistance or tumor recurrence after surgery, indicating a need for better understanding of underlying disease mechanisms. Although estrogen-induced rat prolactinomas have been widely used to investigate th...

journal_title：Endocrinology

authors： Tong Y,Zheng Y,Zhou J,Oyesiku NM,Koeffler HP,Melmed S

更新日期：2012-08-01 00:00:00

abstract：:The effect of fibroblast growth factor (FGF) on LH-stimulated testosterone production was investigated using primary cultures of rat testicular cells. Testicular cells obtained from neonatal rats (8-9 days of age) were maintained in culture for 3 days and then challenged with LH with or without basic FGF. After 3 addi...

journal_title：Endocrinology

authors： Fauser BC,Baird A,Hsueh AJ

更新日期：1988-12-01 00:00:00

abstract：:Disruption of the pituitary adenylate cyclase-activating polypeptide (PACAP) gene in mice has demonstrated a role for this highly conserved neuropeptide in the regulation of metabolism and temperature control. Localization of PACAP neurons within hypothalamic nuclei that regulate appetite suggest PACAP may affect feed...

journal_title：Endocrinology

authors： Adams BA,Gray SL,Isaac ER,Bianco AC,Vidal-Puig AJ,Sherwood NM

更新日期：2008-04-01 00:00:00

abstract：:Two experiments tested whether serotonergic neurons participate in the acute feedback effects of estradiol on LH and PRL secretion. In the first study, ovariectomized female rats received oil vehicle or estradiol benzoate and were killed 3 h later. The turnover of serotonin [5-hydroxytryptamine (5-HT)] in microdissect...

journal_title：Endocrinology

authors： Johnson MD,Crowley WR

更新日期：1983-12-01 00:00:00

abstract：:The feedback sites of estrogen within the hypothalamus and lower brain stem involved in the suppression of pulsatile LH secretion during 48-h fasting were examined in ovariectomized rats with local estradiol (E2) implants. The animals were ovariectomized and immediately implanted stereotaxically with stainless steel c...

journal_title：Endocrinology

authors： Nagatani S,Tsukamura H,Maeda K

更新日期：1994-09-01 00:00:00

abstract：:The present study determined whether the reduction in serum progesterone (P4) concentrations which follows the administration of the antiestrogen ethamoxytriphetol [1-(rho-2-diethylaminoethoxyphenyl)1-phenyl-2-rho-methoxyphenyl ethanol (MER-25)] to pregnant baboons reflects a decline in placental and/or luteal functio...

journal_title：Endocrinology

authors： Albrecht ED,Pepe GJ

更新日期：1984-11-01 00:00:00

abstract：:IGF-binding protein-3 (IGFBP-3) is the major circulating carrier protein for IGF, and also acts as a potent antiproliferative agent in various cell types. Recently, IGFBP-3 was reported to mediate high glucose-induced apoptosis in mesangial cells and podocytes. In this study, we investigated the role of IGFBP-3 in hig...

journal_title：Endocrinology

authors： Yoo EG,Lee WJ,Kim JH,Chae HW,Hyun SE,Kim DH,Kim HS,Oh Y

更新日期：2011-08-01 00:00:00

abstract：:GH controls its own secretion through a mechanism involving short-loop feedback regulation of the synthesis and release of GH-releasing hormone (GHRH). GHRH neurons coexpress the peptide galanin, but the functional significance of this coexpression is unknown. In this study, we tested the hypotheses that 1) galanin ge...

journal_title：Endocrinology

authors： Chan YY,Grafstein-Dunn E,Delemarre-van de Waal HA,Burton KA,Clifton DK,Steiner RA

更新日期：1996-12-01 00:00:00

abstract：:Testerone (T) concentrations in the plasma, gonads, and adrenals were measured by radioimmunoassay in 188 male and 160 female rabbit fetuses. Determinations were performed daily from the 20th to the 31st day of gestation and were correlated with the maternal plasma concentration of T. The T content of both testes rema...

journal_title：Endocrinology

authors： Veyssiere G,Berger M,Jean-Faucher C,De Turckheim M,Jean C

更新日期：1976-11-01 00:00:00

abstract：:Pharmacological amounts of 25(s),26-dihydroxyvitamin D3 were administered to normal, vitamin D-replete rats in order to assess its pharmacological activity. Treatment with 25(s),26-dihydroxyvitamin D3 (20 micrograms/day for 1 week) caused a marked and significant fall in the circulating concentration of 1,25-dihydroxy...

journal_title：Endocrinology

authors： Zerwekh JE,Harvey JA,Pak CY

更新日期：1987-11-01 00:00:00