Cholinergic and alpha-adrenergic stimulation of prostaglandin release by dog thyroid in vitro.

abstract：:It is unclear whether the maturation of corticotrophs from the fetal to the adult type in the fetal sheep pituitary in late gestation is associated with changes in the sensitivity of the fetal pituitary to corticotrophic secretagogues and in the form of ACTH-containing peptides (IR-ACTH) secreted into the circulation....

journal_title：Endocrinology

authors： Ozolins IZ,Antolovich GC,Browne CA,Perry RA,Robinson PM,Silver M,McMillen IC

更新日期：1991-10-01 00:00:00

abstract：:We describe an in vitro system for evaluating the direct effects of catecholamines on the activity of the type II iodothyronine 5'-deiodinase in dispersed rat brown adipocytes. Incubation with norepinephrine or phenylephrine for 3-4 h causes up to a 5-fold increase in deiodinase activity in these cells. As found in vi...

journal_title：Endocrinology

authors： Obregon MJ,Mills I,Silva JE,Larsen PR

更新日期：1987-03-01 00:00:00

abstract：:Pharmacological studies have suggested that the somatostatin (SS) receptor is heterogeneous and may exhibit subtypes selective for SS-14 and SS-28. Whether this heterogeneity can be explained by separate molecular forms of the receptor protein is unclear. In the present study, we have developed a novel photosensitive ...

journal_title：Endocrinology

authors： Srikant CB,Murthy KK,Escher EE,Patel YC

更新日期：1992-05-01 00:00:00

abstract：:A major issue of in the treatment of diabetes is the risk of hypoglycemia. Hypoglycemia is detected both centrally and peripherally in the porto-hepatic area. The portal locus for hypoglycemic detection was originally described using the "local irrigation of the liver" approach in a canine model. Further work using po...

journal_title：Endocrinology

authors： Ionut V,Castro AV,Woolcott OO,Stefanovski D,Iyer MS,Broussard JL,Mkrtchyan H,Burch M,Elazary R,Kirkman E,Bergman RN

更新日期：2014-04-01 00:00:00

abstract：:Exogenous glucocorticoids are potent inhibitors of skeletal growth in experimental animals and children. The mechanism whereby glucocorticoids exert this effect is unclear, and circulating somatomedin levels have been reported to be low, normal, or high in this situation. Since recent studies have emphasized the impor...

journal_title：Endocrinology

authors： Luo JM,Murphy LJ

更新日期：1989-07-01 00:00:00

abstract：:Serum and pituitary thyroid-stimulating hormone (TSH) was measured by radioimmunoassay in male and female Sprague-Dawley rats from 21 through 80 days of age. In males, serum TSH levels increased progressively from days 30 through 50, and were found to be lower on days 60, 70, and 80. In females, serum TSH levels were ...

journal_title：Endocrinology

authors： Simpkins JW,Bruni JF,Mioduszewski RJ,Meites J

更新日期：1976-06-01 00:00:00

abstract：:Although viral infection is thought to be associated with subacute thyroiditis and probably with autoimmune thyroid disease, possible changes in thyroid function during the prodromal period of infection or subclinical infection remain largely unknown. Recently, it was shown that pathogen-associated molecular patterns ...

journal_title：Endocrinology

authors： Yamazaki K,Suzuki K,Yamada E,Yamada T,Takeshita F,Matsumoto M,Mitsuhashi T,Obara T,Takano K,Sato K

更新日期：2007-07-01 00:00:00

abstract：:We have established immortalized human granulosa cells by triple transfection of primary cells obtained from in vitro fertilization patients with SV40 DNA, Ha-ras oncogene, and a temperature sensitive (ts) mutant of the tumor suppressor gene p53 (p53val135). Forty-one clones were isolated, and their steroidogenic resp...

journal_title：Endocrinology

authors： Hosokawa K,Dantes A,Schere-Levy C,Barash A,Yoshida Y,Kotsuji F,Vlodavsky I,Amsterdam A

更新日期：1998-11-01 00:00:00

abstract：:The membrane fraction from the ovaries of pseudopregnant rats exhibits specific, high affinity binding of high density lipoproteins (HDL). Previous studies have indicated that HDL binding in this tissue is up-regulated by hCG and may be involved in supplying cholesterol as substrate for steroid hormone production. To ...

journal_title：Endocrinology

authors： Ferreri K,Menon KM

更新日期：1990-04-01 00:00:00

abstract：:Linear growth results from proliferation and differentiation of chondrocytes within the growth plates and is regulated, in part, by the insulin-like growth factors (IGFs). IGF binding proteins (IGFBPs) also appear to play a significant, but yet unclear, role. To examine IGFBP production by chondrocytes, we isolated bo...

journal_title：Endocrinology

authors： Olney RC,Smith RL,Kee Y,Wilson DM

更新日期：1993-08-01 00:00:00

abstract：:The present study assesses the relationship between G-proteins and protein kinase-C (PKC) in the gonadotrope. Cells were depleted of PKC with 1 microM phorbol 12-myristate 13-acetate for 12 h, followed by medium 199-BSA for 6 h before treatment with vehicle, pertussis toxin (PTX), cholera toxin (CTX), or (Bu)2cAMP (dB...

journal_title：Endocrinology

authors： Barnes SJ,Conn PM

更新日期：1993-12-01 00:00:00

abstract：:The previously reported synchronous oscillations in plasma glucose and insulin levels have been further studied to determine whether the phenomenon can be attributed to cyclic secretion or degradation of the hormone. Plasma C-peptide concentrations were measured and found to cycle with the same period as plasma insuli...

journal_title：Endocrinology

authors： Koerker DJ,Goodner CJ,Hansen BW,Brown AC,Rubenstein AH

更新日期：1978-05-01 00:00:00

abstract：:The effect of active and passive immunization with luteinizing hormone-releasing hormone (LHRH) on serum LH and follicle-stimulating hormone (FSH) levels and the ultrastructure of the pituitary gonadotrophs was investigated in castrated male rats. Two weeks after castration, the animals were immunized with Glu1-LHRH c...

journal_title：Endocrinology

authors： Arimura A,Shino M,de la Cruz KG,Rennels EG,Schally AV

更新日期：1976-07-01 00:00:00

abstract：:A [3H]colchicine-binding assay was employed for estimating the relative amounts of soluble and polymerized tubulin present in an individual anterior pituitary lobe. Colchicine binding to these two tubulin pools was time dependent and dose responsive. Scatchard analysis of the binding revealed that [3H]colchicine bound...

journal_title：Endocrinology

authors： Ravindra R,Grosvenor CE

更新日期：1988-01-01 00:00:00

abstract：:The effects of epidermal growth factor (EGF) on glycogen metabolism and the binding of [125I]iodo-EGF to receptors in fetal rat hepatocytes have been examined. The actions of EGF have been compared with those of insulin-like growth factor I (IGF-I) and insulin. EGF (0.1-45 nM) stimulated dose-dependent increases in [1...

journal_title：Endocrinology

authors： Freemark M

更新日期：1986-08-01 00:00:00

abstract：:FSH has been shown to stimulate the uptake of calcium in cultured rat Sertoli cells, resulting in an increase in cytosolic calcium concentrations. One possibility which has been put forth is that the FSH receptor per se may act as a calcium channel. This is all the more tantalizing given the proposed structure of this...

journal_title：Endocrinology

authors： Shibata EF,Matsuda JJ,Volk KA,Collison KA,Segaloff DL

更新日期：1992-08-01 00:00:00

abstract：:Complete hypothalamic deafferentation, either limited to the median eminence, arcuate nucleus, and basal parts of ventromedial nuclei, or comprising ventromedial nuclei and dorsomedial hypothalamus as well reduced considerably the rise of immunoassayable serum TSH in adult male rats rendered hypothyroid by administrat...

journal_title：Endocrinology

authors： Hefco E,Krulich L,Aschenbrenner JE

更新日期：1975-11-01 00:00:00

abstract：:The adrenal gland is highly vascularized with tightly regulated blood flow that is closely correlated with steroidogenesis. Mechanisms involved in the regulation of adrenal blood flow and vascular tone are largely unknown. The present study characterizes the contractile responses of isolated small cortical arteries fr...

journal_title：Endocrinology

authors： Zhang DX,Gauthier KM,Campbell WB

更新日期：2004-04-01 00:00:00

abstract：:Changes in several extracellular matrix proteins, such as fibronectin in fetal membrane and cervical collagens, occur at term and preterm delivery. However, no studies have evaluated changes in extracellular matrix proteins, in relation to myometrial activation recorded using invasive techniques during parturition in ...

journal_title：Endocrinology

authors： Wu WX,Zhang Q,Ma XH,Unno N,Nathanielsz PW

更新日期：1999-05-01 00:00:00

abstract：:In vertebrates, activation of the GnRH receptor is necessary to initiate the reproductive cascade. However, little is known about the characteristics of GnRH receptors before the vertebrates evolved. Recently genome sequencing was completed for amphioxus, Branchiostoma floridae. To understand the GnRH receptors (GnRHR...

journal_title：Endocrinology

authors： Tello JA,Sherwood NM

更新日期：2009-06-01 00:00:00

abstract：:The suprachiasmatic nucleus (SCN) and arcuate nucleus (ARC) have reciprocal connections; catabolic metabolic information activates the ARC and inhibits SCN neuronal activity. Little is known about the influence of the SCN on the ARC. Here, we investigated whether the SCN modulated the sensitivity of the ARC to catabol...

journal_title：Endocrinology

authors： Herrera-Moro Chao D,León-Mercado L,Foppen E,Guzmán-Ruiz M,Basualdo MC,Escobar C,Buijs RM

更新日期：2016-09-01 00:00:00

abstract：:The antiapoptotic molecule Fas-associated death domain-like IL-1beta-converting enzyme inhibitory protein (FLIP) inhibits Fas-mediated apoptosis by blocking activation of caspase-8. We previously showed that expression of transgenic FLIP on thyroid epithelial cells (TECs) of DBA/1 and CBA/J mice promoted earlier resol...

journal_title：Endocrinology

authors： Fang Y,Braley-Mullen H

更新日期：2008-07-01 00:00:00

abstract：:The antigenic epitopes of human GH (hGH) have been investigated using monoclonal antibodies (Mabs) to hGH. A panel of 12 Mabs was incorporated into two-site binding assays in order to investigate the antigenic surface of hGH. Nine reaction patterns were observed. The Mabs were further characterized in terms of their c...

journal_title：Endocrinology

authors： Strasburger CJ,Kostyo J,Vogel T,Barnard GJ,Kohen F

更新日期：1989-03-01 00:00:00

abstract：:The induction of long-term responses in the uterus following estrogen treatment is discussed, with special reference to DNA synthesis. Immature female rats injected daily with estradiol-17beta or estriol (0.01 to 1 mug) or a combination of the two steroids for one, two or three consecutive days were sacrificed at inte...

journal_title：Endocrinology

authors： Stormshak F,Leake R,Wertz N,Gorski J

更新日期：1976-12-01 00:00:00

abstract：:The epidermis has a great potential as a bioreactor to produce proteins with systemic action. However, the consequences of ectopic epidermal protein overexpression need to be carefully addressed to avoid both local and systemic adverse effects. Thus, the long-term effects of leptin on skin physiology have not been stu...

journal_title：Endocrinology

authors： Rico L,Del Rio M,Bravo A,Ramirez A,Jorcano JL,Page MA,Larcher F

更新日期：2005-10-01 00:00:00

abstract：:Leptin, a recently-discovered hormonal product of the obese gene, circulates in the blood at levels paralleling those of fat reserves and regulates satiety and improves reproductive performance if injected into mice lacking circulating leptin. Therefore, we tested the hypothesis that leptin signals metabolic informati...

journal_title：Endocrinology

authors： Spicer LJ,Francisco CC

更新日期：1997-08-01 00:00:00

abstract：:NADPH-cytochrome P-450 reductase (EC 1.6.2.4), the enzyme involved in progesterone 17-hydroxylation, was purified to apparent homogeneity by detergent solubilization of the microsomal fractions of liver and testis from untreated rats. The enzymes from these two tissues were then compared with regard to several paramet...

journal_title：Endocrinology

authors： Hales DB,Betz G

更新日期：1986-08-01 00:00:00

abstract：:The initiation of mammalian puberty requires an increase in pulsatile release of GnRH from the hypothalamus. This increase is brought about by coordinated changes in transsynaptic and glial-neuronal communication. As the neuronal and glial excitatory inputs to the GnRH neuronal network increase, the transsynaptic inhi...

journal_title：Endocrinology

authors： Ojeda SR,Lomniczi A,Mastronardi C,Heger S,Roth C,Parent AS,Matagne V,Mungenast AE

更新日期：2006-03-01 00:00:00

abstract：:Recent in vitro and in vivo evidence shows that secretion of parathyroid hormone (PTH) and calcitonin (CT) is stimulated by beta-adrenergic agonists and inhibited by beta-adrenergic antagonists. To assess the possible roles of adrenal medullary or adrenergic nerve terminal catecholamines in calcium homeostasis, we hav...

journal_title：Endocrinology

authors： Heath H 3rd

更新日期：1980-10-01 00:00:00

abstract：:A method is described for growing monolayers of newborn rat beta-cells in microculture trays. After disruption of the pancreas with collagenase, islets were isolated by Ficoll density gradient centrifugation, trypsinized to obtain individual cells, and plated in 96-well tissue culture trays. The cells were incubated f...

journal_title：Endocrinology

authors： Dobersen MJ,Scharff JE,Notkins AL

更新日期：1980-04-01 00:00:00