Effects of extracellular nucleotides in the pituitary: adenosine triphosphate receptor-mediated intracellular responses in gonadotrope-derived alpha T3-1 cells.

abstract：:A method to prepare suspension cultures of highly viable pinealocytes is described. Pineal glands of neonatal or adult rats can be used; the best yield is obtained from neonatal glands. Morphological examination of the cells indicates that they have a normal, healthy appearance and retain some structures typical of ne...

journal_title：Endocrinology

authors： Buda M,Klein DC

更新日期：1978-10-01 00:00:00

abstract：:The effects of estradiol valerate and constant light exposure on the histological appearance of the arcuate nucleus were assessed in female rats. Both of these treatments caused significant increases in the numbers of reactive microglial cells and astrocytic granules in the nucleus. Ovariectomy before either treatment...

journal_title：Endocrinology

authors： Brawer JR,Schipper H,Naftolin F

更新日期：1980-07-01 00:00:00

abstract：:GnRH is expressed in first-trimester human placenta and increases cell invasion in extravillous cytotrophoblasts (EVTs). Invasive phenotypes have been reported to be regulated by transcription factor activator protein 1 (AP-1) and mesenchymal cadherin-11. The aim of our study was to investigate the roles of AP-1 compo...

journal_title：Endocrinology

authors： Peng B,Zhu H,Ma L,Wang YL,Klausen C,Leung PC

更新日期：2015-06-01 00:00:00

abstract：:Even though functional CRH receptors have been identified in several brain regions by ligand binding, the identity of brain areas expressing the CRH receptor gene has not been described. The recent cloning of the rat CRH receptor gene has permitted us to conduct an in situ hybridization histochemistry study to localiz...

journal_title：Endocrinology

authors： Wong ML,Licinio J,Pasternak KI,Gold PW

更新日期：1994-11-01 00:00:00

abstract：:Human proenkephalin generated by means of a recombinant vaccinia virus expression vector was used as the substrate for a putative processing enzyme obtained from bovine adrenal chromaffin granules. The adrenal enzyme successfully cleaved proenkephalin to generate low mol wt enkephalins as well as other enkephalin-cont...

journal_title：Endocrinology

authors： Lindberg I,Thomas G

更新日期：1990-01-01 00:00:00

abstract：:Small amounts of TRH are present in the thyroid, and TRH has been shown in several studies to have a moderate direct inhibitory effect on TSH-stimulated thyroid hormone secretion. In a recent publication, however, data were presented to demonstrate that very low doses of TRH given in short pulses induce immediate incr...

journal_title：Endocrinology

authors： Iversen E,Laurberg P

更新日期：1988-02-01 00:00:00

abstract：:Liver receptor homolog-1 (LRH-1) is an orphan nuclear receptor that belongs to the NR5A subgroup of nuclear receptors. LRH-1 induces key genes to regulate metabolic process, ovarian function, cancer cell proliferation, and steroidogenesis. In the breast, LRH-1 modulates and synergizes with endogenous estrogen signalin...

journal_title：Endocrinology

authors： Lazarus KA,Brown KA,Young MJ,Zhao Z,Coulson RS,Chand AL,Clyne CD

更新日期：2014-05-01 00:00:00

abstract：:Progesterone, which is normally produced in the endoplasmic reticulum, was found to be rapidly degraded in the cytosolic fraction of the guinea pig adrenal cortex in vitro. Assuming this finding reflects what happens in vivo raises a question as to the source of progesterone for interacting with a nuclear progesterone...

journal_title：Endocrinology

authors： Demura T,Driscoll WJ,Strott CA

更新日期：1990-09-01 00:00:00

abstract：:In young adult female rats, the patterns of inhibin subunit mRNA expression during the estrous cycle are regulated by cyclic changes in gonadotropin secretion and follicular development. Since there are distinct alterations in profiles of both hormone secretion and folliculogenesis during the reproductive lifespan of ...

journal_title：Endocrinology

authors： Jih MH,Lu JK,Wan YJ,Wu TC

更新日期：1993-01-01 00:00:00

abstract：:We studied the effects of the guanine nucleotide-binding regulatory protein (Gs) from human erythrocytes on PTH-responsive adenylate cyclase from partially purified membranes of canine renal cortex (CRC). Extracts of erythrocyte membranes, containing soluble Gs, was obtained by treatment with a detergent (Lubrol PX). ...

journal_title：Endocrinology

authors： Levine MA,Greene A,Turner RT,Bell NH

更新日期：1984-10-01 00:00:00

abstract：:Blepharophimosis ptosis epicanthus inversus syndrome (BPES) is a human disorder caused by mutations in the forkhead transcription factor gene FOXL2 and is characterized by facial dysmorphology combined in some cases with ovarian failure. To better understand the role of FOXL2 in the etiology of ovarian failure in BPES...

journal_title：Endocrinology

authors： Loffler KA,Zarkower D,Koopman P

更新日期：2003-07-01 00:00:00

abstract：:This investigation examined the effects of repeated injections of LH on ovarian function in the immature sheep approximately 12 weeks before the time of the first expected spontaneous ovulation. The frequency of endogenous LH pulses during the pretreatment period was approximately one pulse each 3 h. The first experim...

journal_title：Endocrinology

authors： Foster DL,Ryan KD,Papkoff H

更新日期：1984-09-01 00:00:00

abstract：:The effect of atrial natriuretic peptide (ANP) on renin release is controversial. Several reports state that ANP inhibits renin secretion, while others have shown no effect. We investigated the effect of synthetic rat ANP with 24 amino acids (atriopeptin III) on renin release in vitro in a dynamic superfusion system o...

journal_title：Endocrinology

authors： Takagi M,Takagi M,Franco-Saenz R,Mulrow PJ

更新日期：1988-04-01 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：:The rapid and temporary suppression of reproductive behavior is often assumed to be an important feature of the adaptive acute stress response. However, how this suppression operates at the mechanistic level is poorly understood. The enzyme aromatase converts testosterone to estradiol in the brain to activate reproduc...

journal_title：Endocrinology

authors： Dickens MJ,Cornil CA,Balthazart J

更新日期：2011-11-01 00:00:00

abstract：:Na(+)/I(-) symporter (NIS)-mediated iodide uptake into thyroid follicular cells serves as the basis of radioiodine therapy for thyroid cancer. NIS protein is also expressed in the majority of breast tumors, raising potential for radionuclide therapy of breast cancer. KT5823, a staurosporine-related protein kinase inhi...

journal_title：Endocrinology

authors： Beyer S,Lakshmanan A,Liu YY,Zhang X,Wapnir I,Smolenski A,Jhiang S

更新日期：2011-03-01 00:00:00

abstract：:Hypophysectomized rats bearing three transplanted pituitaries under the kidney capsule responded to synthetic lysine vasopressin or pitressin with a significant elevation of plasma corticosterone, whereas hypophysectomized rats with no grafts did not. This response was completely abolished by pretreatment of animals w...

journal_title：Endocrinology

authors： Yasuda N,Greer MA,Greer SE,Panton P

更新日期：1978-09-01 00:00:00

abstract：:To assess the effect of breast feeding on circulating thyroid hormone levels in the suckling neonate, we examined serum concentrations of T4, T3, and rT3 by RIA in 12- and 15-day-old rat pups fasted for 3 or 6 h before, at, and hourly for 3 or 4 h after suckling. In both age groups, serum T4 levels decreased significa...

journal_title：Endocrinology

authors： Oberkotter LV

更新日期：1988-07-01 00:00:00

abstract：:High-density lipoprotein mediates a normal physiological process called reverse cholesterol transport. This process enables the transfer of cholesterol from peripheral tissues to the liver for further metabolism and eventual secretion in the form of bile. The scavenger receptor of the B class (SR-BI), human homolog of...

journal_title：Endocrinology

authors： Cao WM,Murao K,Imachi H,Yu X,Dobashi H,Yoshida K,Muraoka T,Kotsuna N,Nagao S,Wong NC,Ishida T

更新日期：2004-12-01 00:00:00

abstract：:Thyroid hormone accelerates energy expenditure (EE) and is critical for cold-induced thermogenesis. To define the metabolic role played by thyroid hormone in the dissipation of calories from diet, hypothyroid mice were studied for 60 d in a comprehensive lab animal monitoring system. Hypothyroidism decreased caloric i...

journal_title：Endocrinology

authors： Ueta CB,Olivares EL,Bianco AC

更新日期：2011-09-01 00:00:00

abstract：:The perinatal rat exhibits low serum TSH levels in the presence of very low concentrations of T3 and T4. We had reported previously that this animal does not require endogenous TRH for TSH release. We investigated here whether the inhibitory hormone somatostatin (SS) has a role in maintaining the low TSH secretory set...

journal_title：Endocrinology

authors： Theodoropoulos TJ

更新日期：1985-10-01 00:00:00

abstract：:The maternal plasma concentrations of GH and PRL increase dramatically upon the initiation of lactation in the rat. In light of the fact that these two hormones have evolved from one common precursor, we sought to determine if the neuroendocrine mechanisms regulating their concomitant increase during lactation are com...

journal_title：Endocrinology

authors： Wehrenberg WB,Gaillard RC

更新日期：1989-01-01 00:00:00

abstract：:Ghrelin is a gastric peptide that regulates appetite and GH secretion. Circulating ghrelin levels are elevated by fasting and suppressed postprandially. However, the mechanisms regulating circulating ghrelin levels are unclear. Oxyntomodulin is an anorexic peptide hormone released from L cells in the gut. We investiga...

journal_title：Endocrinology

authors： Patterson M,Murphy KG,Patel SR,Patel NA,Greenwood HC,Cooke JH,Campbell D,Bewick GA,Ghatei MA,Bloom SR

更新日期：2009-08-01 00:00:00

abstract：:Specific binding sites for PRL were identified on isolated intestinal epithelial cells from both male and female rabbits. These receptors exhibited a very high affinity for PRL (Kd = 5 x 10(-11) M) and were immunologically very similar to the well characterized mammary PRL receptor. About 3500 PRL receptors/cell were ...

journal_title：Endocrinology

authors： Dusanter-Fourt I,Belair L,Gespach C,Djiane J

更新日期：1992-05-01 00:00:00

abstract：:The adrenergic control of cAMP and 3',5'-cyclic GMP (cGMP) in dispersed adult rat pinealocytes was investigated. Norepinephrine treatment increased cAMP and cGMP content 60- and 400-fold, respectively; both alpha- and beta-adrenoceptors had to be activated for these responses to occur. Beta-Adrenergic stimulation alon...

journal_title：Endocrinology

authors： Vanecek J,Sugden D,Weller J,Klein DC

更新日期：1985-06-01 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：:Estrogen unresponsiveness among primate species can result from overexpression of a heterogeneous nuclear ribonucleoprotein (hnRNP) that competes with estrogen receptor (ER) for binding to the estrogen-response element (ERE). This hnRNP has been coined the "ERE-binding protein" (ERE-BP). The ERE-BP is a member of the ...

journal_title：Endocrinology

authors： Chen H,Stuart W,Hu B,Nguyen L,Huang G,Clemens TL,Adams JS

更新日期：2005-10-01 00:00:00

abstract：:The p44/p42 MAPKs (ERK1/2) cascade regulates beta-cell nuclear events, which modulates cell differentiation and gene transcription, whereas its implication in processes occurring in the cytoplasm, such as activation of the exocytotic machinery, is still unclear. Using the MIN6 beta-cell line and isolated rat islets of...

journal_title：Endocrinology

authors： Longuet C,Broca C,Costes S,Hani EH,Bataille D,Dalle S

更新日期：2005-02-01 00:00:00

abstract：:Task3 K(+) channels are highly expressed in the adrenal cortex and contribute to the angiotensin II and K(+) sensitivity of aldosterone-producing glomerulosa cells. Adult Task3(-/-) mice display a partially autonomous aldosterone secretion, subclinical hyperaldosteronism, and salt-sensitive hypertension. Here, we inve...

journal_title：Endocrinology

authors： Bandulik S,Tauber P,Penton D,Schweda F,Tegtmeier I,Sterner C,Lalli E,Lesage F,Hartmann M,Barhanin J,Warth R

更新日期：2013-08-01 00:00:00

abstract：:Aside from studies of a possible synergism between T3 and glucocorticoids in regulating GH mRNA, there have been few previous studies of the modulation by hormones and other factors of glucocorticoid hormone regulation of pituitary cell GH gene expression. We have employed a serum-free medium containing no exogenously...

journal_title：Endocrinology

authors： Gick GG,Bancroft C

更新日期：1987-05-01 00:00:00