Effects of cellular interactions on calcium dynamics in prolactin-secreting cells.

abstract：:The activity of the Na+/H+ exchanger was studied by measuring the effects of intracellular pH (pHi) and extracellular Na+ [(Na+)o] on pHi recovery and 22Na uptake in rat adipocytes. The resting pHi was acidified from 7.30 +/- 0.02 to 6.99 +/- 0.01 with nigericin in the absence of (Na+)o. pHi recovery induced by 30 mM ...

journal_title：Endocrinology

authors： Arsenis G

更新日期：1995-07-01 00:00:00

abstract：:The administration of testosterone cypionate (0.4 mg/kg BW . day) to castrated male dogs caused a doubling of prostate weight within 4 weeks and an increase in the content of testosterone and dihydrotestosterone in the prostate. When the 5 alpha-reductase inhibitor 17-N,N-diethylcarbamoyl-4-methyl-4-aza-5 alpha-andros...

journal_title：Endocrinology

authors： Wenderoth UK,George FW,Wilson JD

更新日期：1983-08-01 00:00:00

abstract：:Two different types of corticoid receptor molecules bind circulating corticosterone in brain: mineralocorticoid receptors (MR) and glucocorticoid receptors. MR exhibit the highest affinity for the endogenous glucocorticoid in the rat, corticosterone. During development, low corticosterone levels influence neurogenesis...

journal_title：Endocrinology

authors： Vázquez DM,López JF,Morano MI,Kwak SP,Watson SJ,Akil H

更新日期：1998-07-01 00:00:00

abstract：:We describe a new animal model of obesity and GH deficiency and report the effects on body fat of administering (GH) and insulin-like growth factor (IGF-I) in the model. Female GH-deficient dwarf rats fed a high-fat diet became obese and insulin-resistant compared with chow-fed controls. They were treated with recombi...

journal_title：Endocrinology

authors： Clark RG,Mortensen DL,Carlsson LM,Carlsson B,Carmignac D,Robinson IC

更新日期：1996-05-01 00:00:00

abstract：:Neonatal exposure to high doses of estrogen results in permanent suppression of prostate growth and reduced sensitivity to androgens in adulthood. It is unclear whether alterations in prostate growth are due to a direct effect of estrogens on the gland or are the result of hypothalamic-pituitary-gonadal axis suppressi...

journal_title：Endocrinology

authors： Jarred RA,Cancilla B,Prins GS,Thayer KA,Cunha GR,Risbridger GP

更新日期：2000-09-01 00:00:00

abstract：:Immunohistochemical localization of androgen in the testes of both rat and squirrel monkey has been performed using an antiserum specific to testosterone and certain related androgens. The bound antibodies were visualized by coupling with antigammaglobulin labeled either with fluorescein isothiocyanate or with a horse...

journal_title：Endocrinology

authors： Bubenik GA,Brown GM,Grota LJ

更新日期：1975-01-01 00:00:00

abstract：:To test the hypothesis that angiotensin (Ang) II induces profibrotic gene expression through endogenous aldosterone, we measured the effect of 4 h infusion (600 ng/kg x min) of Ang II on tissue mRNA expression of plasminogen activator inhibitor 1 (PAI-1), preproendothelin-1 (ppET-1), TGF-beta, and osteopontin in wild-...

journal_title：Endocrinology

authors： Luther JM,Wang Z,Ma J,Makhanova N,Kim HS,Brown NJ

更新日期：2009-05-01 00:00:00

abstract：:In the rat ovary, follicle cells produce and respond to activin, but as yet, the functional significance of the autocrine/paracrine effects of ovarian activin remains equivocal. To assess the effects of activin on folliculogenesis, normal cycling female rats were injected once every 8 h over a 40-h period with recombi...

journal_title：Endocrinology

authors： Erickson GF,Kokka S,Rivier C

更新日期：1995-11-01 00:00:00

abstract：:Our laboratory has previously reported that physiological levels of progestins stimulate growth of the human breast cancer cell line T47D. We have also determined that the antiprogestin RU486 inhibits this stimulation. Here we present the unexpected finding that RU486 alone also stimulates growth of these breast cance...

journal_title：Endocrinology

authors： Bowden RT,Hissom JR,Moore MR

更新日期：1989-05-01 00:00:00

abstract：:In this study, site-directed mutagenesis and biochemical strategies have been used to establish whether disulfide bonding between extracellular Cys residues contributes to the structural integrity of the GnRH receptor (GnRH-R) and, if so, to delineate the nature of the bonding patterns involved. The majority of G prot...

journal_title：Endocrinology

authors： Cook JV,Eidne KA

更新日期：1997-07-01 00:00:00

abstract：:The present studies were designed to evaluate the binding characteristics of arginine vasopressin (AVP), using rat anterior pituitary dispersed cells, in correlation with the biological activity of the peptide. Synthetic AVP released ACTH from dispersed anterior pituitary cells in a concentration-dependent fashion, wi...

journal_title：Endocrinology

authors： Spinedi E,Negro-Vilar A

更新日期：1984-06-01 00:00:00

abstract：:Ghrelin is a peptide hormone primarily produced in the previously unidentified X/A endocrine cells of the stomach. Extensive studies have focused on the effects of ghrelin on growth hormone release and appetite regulation. However, the mechanisms regulating ghrelin secretion are less understood. In the present study, ...

journal_title：Endocrinology

authors： Gagnon J,Anini Y

更新日期：2012-08-01 00:00:00

abstract：:Estrogen formation is catalyzed by the aromatase cytochrome P450 (P450AROM) enzyme. Aromatase activity has been detected in several regions in the rat brain. In the present study, we used peptide-generated polyclonal antibodies raised against a 20-amino acid synthetic fragment of the rat P450AROM protein (as deduced f...

journal_title：Endocrinology

authors： Sanghera MK,Simpson ER,McPhaul MJ,Kozlowski G,Conley AJ,Lephart ED

更新日期：1991-12-01 00:00:00

abstract：:This study analyzes the role of the autonomic nervous system, the pituitary gland, ACTH, dexamethasone (DEX), and thyroid hormones in the regulation of 5'deiodinase (5'D) in the hypothalamus (HP) and adrenal gland (AG) of the rat. 5'D activity was analyzed in rats under basal conditions (22 C) and during cold exposure...

journal_title：Endocrinology

authors： Anguiano B,Quintanar A,Luna M,Navarro L,Ramírez del Angel A,Pacheco P,Valverde C

更新日期：1995-08-01 00:00:00

abstract：:Peroxisome proliferator activated receptor (PPARγ) is a nuclear receptor transcription factor that regulates adipogenesis and energy homeostasis. Recent studies suggest PPARγ may mediate some of its metabolic effects through actions in the brain. We used a Cre-recombinase-dependent (using NestinCre) conditionally acti...

journal_title：Endocrinology

authors： Stump M,Guo DF,Lu KT,Mukohda M,Cassell MD,Norris AW,Rahmouni K,Sigmund CD

更新日期：2016-11-01 00:00:00

abstract：:The effects of recombinant human insulin-like growth factor I (IGF-I) on both vasoactive intestinal peptide (VIP) and PRL production and gene expression were studied using rat anterior pituitary cell cultures grown in serum-free defined medium. We also examined whether pituitary VIP could be involved in the PRL respon...

journal_title：Endocrinology

authors： Lara JI,Lorenzo MJ,Cacicedo L,Tolón RM,Balsa JA,López-Fernández J,Sánchez-Franco F

更新日期：1994-12-01 00:00:00

abstract：:Skeletal cells synthesize bone morphogenetic proteins (BMPs) and BMP antagonists. Gremlin, a BMP antagonist, is expressed in osteoblasts and opposes BMP effects on osteoblastic differentiation and function in vitro. However, its effects in vivo are not known. To investigate the actions of gremlin on bone remodeling in...

journal_title：Endocrinology

authors： Gazzerro E,Pereira RC,Jorgetti V,Olson S,Economides AN,Canalis E

更新日期：2005-02-01 00:00:00

abstract：:Uterine ornithine decarboxylase (ODC) activity is reported to increase after estrogen administration to fetal, neonatal, immature, and adult rats, suggesting that it may be a useful marker in studies of the development of estrogen responsiveness. Standard conditions were validated for enzyme assay of uterine cytosols ...

journal_title：Endocrinology

authors： Olson ME,Sheehan DM,Branham WS

更新日期：1983-11-01 00:00:00

abstract：:Hypoxia and biological responses to hypoxia are commonly encountered in both normal and pathologic cellular processes. Here we report that extracellular superoxide dismutase (EC-SOD) plays a major role in regulating the magnitude of hypoxia-induced erythropoietin (Epo) gene expression, thus implicating superoxide as a...

journal_title：Endocrinology

authors： Zelko IN,Folz RJ

更新日期：2005-01-01 00:00:00

abstract：:A miniature thermoelectric probe was used to record continuously tissue blood flow in the anterior pituitary gland of anesthetized dogs. The output of the flow probe is linear in the range of tissue blood flow encountered in the pituitary. Probe placement required minimal tissue trauma, and zero blood flow was recorde...

journal_title：Endocrinology

authors： Kopaniky DR,Gann DS

更新日期：1975-09-01 00:00:00

abstract：:The effects of continuous high GH levels on GH signal transduction through the GH receptor (GHR)/Janus kinase 2 (JAK2)/signal transducer and activator of transcription 5 (STAT5) pathway as well as the desensitization of this pathway by suppressors of cytokine signaling (SOCS) were studied in transgenic mice overexpres...

journal_title：Endocrinology

authors： González L,Miquet JG,Sotelo AI,Bartke A,Turyn D

更新日期：2002-02-01 00:00:00

abstract：:The importance of locally produced insulin-like growth factor-I (IGF-I) in connective tissues has recently been recognized. It has been postulated that the action of anabolic hormones on bone may be mediated through local IGF-I release. However, whether IGF-I can also be modulated by other locally acting cytokines has...

journal_title：Endocrinology

authors： Elford PR,Lamberts SW

更新日期：1990-10-01 00:00:00

abstract：:The regression of the tadpole tail is under the direct control of the thyroid hormones and offers a unique system for the study of the action of these hormones. We have examined the binding of L-triiodothyronine (T3) and L-thyroxine (T4) in vitro using tail fin bricks which included epidermal and connective cells. The...

journal_title：Endocrinology

authors： Yoshizato K,Kistler A,Frieden E

更新日期：1975-10-01 00:00:00

abstract：:LH supplementation in assisted reproductive technology cycles improves the ongoing pregnancy rate in women with poor ovarian response (POR). However, our knowledge of the precise role of LH during the follicular phase of the menstrual cycle is incomplete. To explore the role of LH in the maturation of small antral fol...

journal_title：Endocrinology

authors： Hattori K,Orisaka M,Fukuda S,Tajima K,Yamazaki Y,Mizutani T,Yoshida Y

更新日期：2018-06-01 00:00:00

abstract：:Several studies have revealed a variety of interactions between PTH and ACTH. The existence of a significant area of homology in the bioactive regions of the two molecules has been proposed as a possible reason for such interactions. To clarify the relationship, corticosteroidogenic and cAMP accumulative effects of bo...

journal_title：Endocrinology

authors： Rafferty B,Zanelli JM,Rosenblatt M,Schulster D

更新日期：1983-09-01 00:00:00

abstract：:Homologous anterior pituitaries grafted under the kidney capsule in hypophysectomized rats were studied 30 days after transplantation. Some cells maintained the ultrastructural features peculiar to the various cell types of normotopic glands, while the others were characterized by few, small, dense granules, spherical...

journal_title：Endocrinology

authors： Zanini A,Giannattasio G,De Camilli P,Panerai AE,Müller EE,Meldolesi J

更新日期：1979-01-01 00:00:00

abstract：:In muscle, physiologic hyperinsulinemia, presumably acting on endothelial cells (ECs), dilates arterioles and regulates both total blood flow and capillary recruitment, which in turn influences glucose disposal. In cultured ECs, however, supraphysiological (e.g. >or=10 nM) insulin concentrations are typically used to ...

journal_title：Endocrinology

authors： Li G,Barrett EJ,Wang H,Chai W,Liu Z

更新日期：2005-11-01 00:00:00

abstract：:Pancreatic islets express the superoxide-producing nicotinamide adenine dinucleotide phosphate (NADPH) oxidase system, but its role remains unknown. To address this, we studied the mechanisms of impaired insulin secretion induced by diphenyleneiodium (DPI), an NADPH oxidase inhibitor. We investigated the effects of DP...

journal_title：Endocrinology

authors： Imoto H,Sasaki N,Iwase M,Nakamura U,Oku M,Sonoki K,Uchizono Y,Iida M

更新日期：2008-11-01 00:00:00

abstract：:Sex difference in the number of neurons projecting axons from the lateral septum (LS) to the midbrain central gray (MCG) that are concerned with the lordosis-inhibiting system was investigated by injection of Fluoro-Gold (FG), a retrograde tracer, into the rostral MCG on the right side in male and female rats. Immunoh...

journal_title：Endocrinology

authors： Tsukahara S,Yamanouchi K

更新日期：2002-01-01 00:00:00

abstract：:We examined the effects of the polycationic antibiotic, neomycin, on the function of dispersed bovine parathyroid cells. Neomycin caused a reversible, dose-dependent inhibition of low calcium (Ca++)-stimulated PTH release, with half-maximal inhibition at 30 microM. Maximal inhibition (with 200 microM neomycin) was not...

journal_title：Endocrinology

authors： Brown EM,Butters R,Katz C,Kifor O

更新日期：1991-06-01 00:00:00