Effects of ovariectomy and season on plasma luteinizing hormone in mares.

abstract：:Activators of protein kinase C, such as phorbol myristate acetate (PMA) and the synthetic diacylglycerol dioctanoylglycerol (diC8), either stimulate or inhibit PTH release depending on the extracellular Ca2+ concentration. By increasing PTH release at high extracellular Ca2+, these agents, in effect, block high Ca2(+)...

journal_title：Endocrinology

authors： Shoback DM,Chen TH

更新日期：1990-07-01 00:00:00

abstract：:The steroid hormone 1 alpha,25-dihydroxyvitamin D3 [1,25-(OH)2D3] can elicit biological responses via a nongenomic pathway that involves rapid opening of the plasma membrane Ca2+ channels. There is also evidence that 1,25-(OH)2D3 influences insulin secretion in the pancreatic beta-cell, which is primarily mediated by ...

journal_title：Endocrinology

authors： Sergeev IN,Rhoten WB

更新日期：1995-07-01 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：:Proopiomelanocortin (POMC) neurons in the hypothalamus are direct targets of the adipostatic hormone leptin and contribute to energy homeostasis by integrating peripheral and central information. The melanocortin and beta-endorphin neuropeptides are processed from POMC and putatively coreleased at axon terminals. Mela...

journal_title：Endocrinology

authors： Appleyard SM,Hayward M,Young JI,Butler AA,Cone RD,Rubinstein M,Low MJ

更新日期：2003-05-01 00:00:00

abstract：:Carbohydrate metabolism in pregnancy reflects the balance between counterregulatory hormones, which induce insulin resistance, and lactogenic hormones, which stimulate beta-cell proliferation and insulin production. Here we explored the interactions of prolactin (PRL) and glucocorticoids in the regulation of beta-cell...

journal_title：Endocrinology

authors： Arumugam R,Horowitz E,Lu D,Collier JJ,Ronnebaum S,Fleenor D,Freemark M

更新日期：2008-11-01 00:00:00

abstract：:As human pregnancy advances, CRH increases exponentially and is hypothesized to trigger the transition from myometrial quiescence to active contractions at labor. Paradoxically, CRH stimulates cAMP production, suggesting it should cause relaxation. To evaluate CRH as a mediator of quiescence, the effect of CRH on cont...

journal_title：Endocrinology

authors： Tyson EK,Smith R,Read M

更新日期：2009-12-01 00:00:00

abstract：:LH treatment of isolated medium (3- to 7-mm) follicles from porcine ovaries stimulated pregnenolone synthesis by mitochondria isolated from these tissues. This LH stimulation of pregnenolone synthesis was observed regardless of whether exogenous cholesterol was added to the mitochondrial assay system, suggesting that ...

journal_title：Endocrinology

authors： Neymark MA,Bieszczad RR,Dimino MJ

更新日期：1984-02-01 00:00:00

abstract：:IGF binding protein-2 (IGFBP-2) has been implicated in the development and spread of a number of tumor types, and its abrogation in experimental models of cancer is associated with decreased tumor growth. This suggests that targeted inhibition of IGFBP-2 expression in some cancers may have therapeutic benefit. In this...

journal_title：Endocrinology

authors： Martin JL,Baxter RC

更新日期：2007-05-01 00:00:00

abstract：:The mammalian suprachiasmatic nucleus is the site of the circadian rhythm generator. The degrees of expression there of several neuropeptides, including vasopressin and vasoactive intestinal polypeptide, follow a diurnal rhythm. The vasopressin V1a receptor, whose activation results in phosphoinositol hydrolysis and m...

journal_title：Endocrinology

authors： Young WS 3rd,Kovács K,Lolait SJ

更新日期：1993-08-01 00:00:00

abstract：:The type 2 iodothyronine deiodinase (D2) is essential for feedback regulation of TSH by T4. We genetically inactivated in vivo D2 in thyrotrophs using a mouse model of Cga-driven cre recombinase. Pituitary D2 activity was reduced 90% in the Cga-cre D2 knockout (KO) mice compared with control Dio2(fl/fl) mice. There wa...

journal_title：Endocrinology

authors： Luongo C,Martin C,Vella K,Marsili A,Ambrosio R,Dentice M,Harney JW,Salvatore D,Zavacki AM,Larsen PR

更新日期：2015-02-01 00:00:00

abstract：:Diabetes is associated with increased generation of cytokines and tissue inflammation, but it is unclear how increased cytokine synthesis is causally related to the development of diabetic complications. Here, we report that exposure to high (25 mm) glucose, but not iso-osmotic concentrations of mannitol or 3-methyl g...

journal_title：Endocrinology

authors： Ramana KV,Tammali R,Reddy AB,Bhatnagar A,Srivastava SK

更新日期：2007-09-01 00:00:00

abstract：:We have investigated the production and actions of a growth regulatory protein, insulin-like growth factor binding protein (IGFBP)-3, in the androgen-responsive prostate carcinoma cell line LNCaP. Confluent monolayers of cells secreted approximately 0.7 ng/ml IGFBP-3 over 24 h. Dihydrotestosterone (DHT, 10 nM) and 1,2...

journal_title：Endocrinology

authors： Martin JL,Pattison SL

更新日期：2000-07-01 00:00:00

abstract：:Subcellular preparations from rat liver, brain, and kidney and from human liver were tested for their ability to desulfate T3 sulfate (T3SO4). Activity was found associated with the microsomal fraction: rat liver was the most active, hydrolyzing 76 pmol/min.mg protein of T3SO4 while preparations from rat kidney and br...

journal_title：Endocrinology

authors： Kung MP,Spaulding SW,Roth JA

更新日期：1988-04-01 00:00:00

abstract：:Although Na+/H+ exchange is important to maintenance of pH and volume and thus placental-fetal homeostasis, regulation of the Na+/H+ exchange system is incompletely understood. We previously showed that Na+/H+ exchanger (NHE)1 and -3 and their regulatory factors NHERF1 and -2 were expressed in human and nonhuman prima...

journal_title：Endocrinology

authors： Pepe GJ,Burch MG,Albrecht ED

更新日期：2006-06-01 00:00:00

abstract：:We recently reported that chronic 17β-estradiol (E2) treatment in mice decreases platelet responsiveness, prolongs the tail-bleeding time and protects against acute thromboembolism via the hematopoietic estrogen receptor alpha (ERα), and independently of ERβ. Here, we have explored the respective roles of membrane vs ...

journal_title：Endocrinology

authors： Valéra MC,Fontaine C,Lenfant F,Cabou C,Guillaume M,Smirnova N,Kim SH,Chambon P,Katzenellenbogen JA,Katzenellenbogen BS,Payrastre B,Arnal JF

更新日期：2015-11-01 00:00:00

abstract：:In the ewe, photoperiod modulates LH and PRL secretion as well as median eminence (ME) dopaminergic activity. The studies reported here were designed to characterize the functional significance of this photoperiodic modulation of ME dopaminergic neuron activity in relation to the regulation of LH and PRL secretion. Th...

journal_title：Endocrinology

authors： Viguié C,Thibault J,Thiéry JC,Tillet Y,Malpaux B

更新日期：1997-01-01 00:00:00

abstract：:After reproductive senescence or gonadectomy, changes occur in neural gene expression, ultimately altering brain function. The endocrine mechanisms underlying these changes in gene expression beyond immediate hormone loss are poorly understood. To investigate this, we measured changes in gene expression the dorsal str...

journal_title：Endocrinology

authors： Meitzen J,Perry AN,Westenbroek C,Hedges VL,Becker JB,Mermelstein PG

更新日期：2013-05-01 00:00:00

abstract：:Both fructose consumption and increased intracellular glucocorticoid activation have been implicated in the pathogenesis of the metabolic syndrome. Glucocorticoid activation by 11β-hydroxysteroid dehydrogenase type 1 (11β-HSD1) depends on hexose-6-phosphate dehydrogenase (H6PD), which physically interacts with 11β-HSD...

journal_title：Endocrinology

authors： Senesi S,Legeza B,Balázs Z,Csala M,Marcolongo P,Kereszturi E,Szelényi P,Egger C,Fulceri R,Mandl J,Giunti R,Odermatt A,Bánhegyi G,Benedetti A

更新日期：2010-10-01 00:00:00

abstract：:Circulating levels of insulin-like growth factor-I (IGF-I) increase during puberty, concurrent with an increase in the levels of GH and the gonadal steroids. The relationship between the changes observed in IGF-I and testosterone (T) levels are not understood. This study was designed to determine whether T has a direc...

journal_title：Endocrinology

authors： Phillip M,Palese T,Hernandez ER,Roberts CT Jr,LeRoith D,Kowarski AA

更新日期：1992-05-01 00:00:00

abstract：:The preoptic area (POA) of the male dove is a known target area for separable behavioral actions of testosterone and 17 beta-estradiol (E2) and contains an active aromatase system. We have examined the regulatory influence of gonadal hormones on aromatase using an in vitro microassay that measures conversion of [1 alp...

journal_title：Endocrinology

authors： Hutchison JB,Steimer T

更新日期：1986-06-01 00:00:00

abstract：:TSH is the most important biomarker in the interpretation of thyroid function in man. Its levels are determined by circulating thyroid hormone (TH) levels that feed back centrally to regulate the expression of the subunits that comprise TSH from the pituitary. The nuclear corepressor 1 (NCoR1), is a critical coregulat...

journal_title：Endocrinology

authors： Costa-e-Sousa RH,Astapova I,Ye F,Wondisford FE,Hollenberg AN

更新日期：2012-10-01 00:00:00

abstract：:ACTH produced a 75% increase in pregnenolone biosynthesis from endogenous precursors in isolated cells prepared from the rat Snell adrenocortical carcinoma 494. On the addition of 24- and 25-hydroxycholesterol to the tumor cells, the rate of pregnenolone synthesis increased 10-fold but was insensitive to the presence ...

journal_title：Endocrinology

authors： Mason JI,Robidoux WF

更新日期：1979-11-01 00:00:00

abstract：:Split hand/foot malformation (SHFM) is syndromic ectrodactyly often associated with mental retardation and/or craniofacial defects. Several clinical reports previously described urogenital dysplasia such as micropenis, hypospadias, and small testis in SHFM patients. Genetic lesions in the Dlx5 and Dlx6 (Dlx5/6) locus ...

journal_title：Endocrinology

authors： Nishida H,Miyagawa S,Vieux-Rochas M,Morini M,Ogino Y,Suzuki K,Nakagata N,Choi HS,Levi G,Yamada G

更新日期：2008-05-01 00:00:00

abstract：:T4-binding globulin (TBG), the principal carrier of thyroid hormone in serum, is a glycoprotein containing 20% carbohydrate. The importance of the carbohydrate moiety has been previously studied by enzymatic deglycosylation, which showed that deglycosylated TBG retains its original immunological an T4-binding properti...

journal_title：Endocrinology

authors： Murata Y,Magner JA,Refetoff S

更新日期：1986-04-01 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：:Hypoglycemia associated with diabetes management is a potential risk for cardiovascular diseases. However, the effect of hypoglycemic episodes including a surge of sympathetic activity on the progression of neointima formation after vascular injury remains largely unknown. In this study, insulin was injected intraperi...

journal_title：Endocrinology

authors： Yasunari E,Mita T,Osonoi Y,Azuma K,Goto H,Ohmura C,Kanazawa A,Kawamori R,Fujitani Y,Watada H

更新日期：2014-06-01 00:00:00

abstract：:Immune activation results in the activation of adrenal steroidogenesis and inhibition of gonadal steroidogenesis. Previous studies indicated that these effects were caused primarily by activation and suppression of the secretion of ACTH and LH, respectively. However, other evidence indicated a direct effect of the imm...

journal_title：Endocrinology

authors： Hales KH,Diemer T,Ginde S,Shankar BK,Roberts M,Bosmann HB,Hales DB

更新日期：2000-11-01 00:00:00

abstract：:We investigated the effect of TSH on calcium transport in mouse thyroid, as well as the influence of iodide thereupon. Thyroid lobes were incubated in Krebs-Ringer bicarbonate buffer containing [45Ca2+] and the time-dependent uptake of [45Ca2+] by the lobes was observed. In the presence of 0.5 mU/ml TSH, the uptake of...

journal_title：Endocrinology

authors： Hashizume K,Ichikawa K,Komiya I,Onaya T

更新日期：1984-05-01 00:00:00

abstract：:By acting in the brain, insulin suppresses food intake, whereas neuropeptide Y (NPY) has the opposite effect. Since fasting increases NPY gene expression in the hypothalamic arcuate nucleus (ARC) and also lowers circulating insulin levels, we hypothesized that the anorexiant effect of insulin could result from insulin...

journal_title：Endocrinology

authors： Schwartz MW,Marks JL,Sipols AJ,Baskin DG,Woods SC,Kahn SE,Porte D Jr

更新日期：1991-05-01 00:00:00

abstract：:We have studied calmodulin (CaM)-like activity and calcium (Ca++)-regulated phosphodiesterase (PDE) activity in cells from the rat adrenal zona glomerulosa (ZG) and zona fasciculata (ZF). Boiled cell sonicates from the ZG and ZF activated CaM-deficient PDE in a dose-dependent fashion by 2.0- to 2.3-fold. The propertie...

journal_title：Endocrinology

authors： Koletsky RJ,Brown EM,Williams GH

更新日期：1983-08-01 00:00:00