The negative feedback effects of testicular steroids are predominantly at the hypothalamus in the ram.

abstract：:We have examined the effects of acute administration of the cannabinoid receptor type 1 (CB(1)) antagonist AM251 on the rat hypothalamic-pituitary-adrenal (HPA) axis with respect to both gender and time of day. Blood samples were collected from conscious male and female rats every 5 min using an automated blood sampli...

journal_title：Endocrinology

authors： Atkinson HC,Leggett JD,Wood SA,Castrique ES,Kershaw YM,Lightman SL

更新日期：2010-08-01 00:00:00

abstract：:Species-specific differences in genes encoding type II GnRH receptor indicate that a functional hepta-helical receptor is produced in monkeys but not in rodents, cows, chimpanzees, or humans. To further investigate the extent of evolutionary differences, we sequenced the type II GnRH receptor gene from wild-type Soay ...

journal_title：Endocrinology

authors： Gault PM,Morgan K,Pawson AJ,Millar RP,Lincoln GA

更新日期：2004-05-01 00:00:00

abstract：:We investigated the effects of the peripheral administration of 17 beta-estradiol (E2), estrone (E1), and the catecholestrogens, 2-hydroxyestradiol (2-OHE2) and 2-hydroxyestrone, (2-OHE1), on anterior pituitary gland PRL release in the prepuberal rat. Steroids in oil were injected sc into 25-day-old female and 35- to ...

journal_title：Endocrinology

authors： Rodriguez-Sierra JF,Blake CA

更新日期：1982-02-01 00:00:00

abstract：:Adipokines, cytokines mainly produced by adipocytes, are active participants in the regulation of inflammation. Administration of zymosan (ZY) was used to investigate the regulation and role of adipokines during peritonitis in mice. Injection of ZY led to a significant increase in leptin levels in both serum and perit...

journal_title：Endocrinology

authors： Pini M,Gove ME,Sennello JA,van Baal JW,Chan L,Fantuzzi G

更新日期：2008-08-01 00:00:00

abstract：:The rat PTH molecule contains five sequence differences from either the bovine or the human hormone within the biologically active 1-34 region. A synthetic rat 1-34 peptide was tested for activity by in vitro activation of canine and rat renal adenylate cyclase and binding to canine renal membrane receptors. The mean ...

journal_title：Endocrinology

authors： Keutmann HT,Griscom AW,Nussbaum SR,Reiner BF,Goud AN,Potts JT Jr,Rosenblatt M

更新日期：1985-09-01 00:00:00

abstract：:The production of hydrogen peroxide (H2O2) as an essential process for iodide organification is a key reaction in TSH-induced thyroid hormone synthesis. Here we characterize the signal transduction pathway involved in TSH-induced H2O2 production in FRTL-5 thyroid cells. At higher than 1 nM TSH, N6-(L-2-phenylisopropyl...

journal_title：Endocrinology

authors： Kimura T,Okajima F,Sho K,Kobayashi I,Kondo Y

更新日期：1995-01-01 00:00:00

abstract：:Treatment of rat islets with the cytokine IL-1 results in the inhibition of mitochondrial function and insulin secretion, events that are mediated by beta-cell expression of iNOS [inducible nitric oxide (NO) synthase] and production of NO. beta-Cells recover from the inhibitory actions of NO, produced following 24 h i...

journal_title：Endocrinology

authors： Scarim AL,Nishimoto SY,Weber SM,Corbett JA

更新日期：2003-08-01 00:00:00

abstract：:Exposure to testosterone (T) during d 30-90 of fetal life results in low-birth-weight offspring, hypergonadotropism, multifollicular ovaries, and early cessation of cyclicity. The multifollicular phenotype may result from failure of follicles to regress and consequent follicular persistence or, alternatively, increase...

journal_title：Endocrinology

authors： Steckler T,Wang J,Bartol FF,Roy SK,Padmanabhan V

更新日期：2005-07-01 00:00:00

abstract：:The family of CRH-related peptides are suggested to play important roles in the control of myometrial contractility during pregnancy and labor. In this study we investigated the expression of urocortin II (UCN II) in human myometrium and its ability to phosphorylate intracellular components that can be involved in mod...

journal_title：Endocrinology

authors： Karteris E,Hillhouse EW,Grammatopoulos D

更新日期：2004-02-01 00:00:00

abstract：:In seasonal species, various physiological processes including reproduction are organized by photoperiod via melatonin, but the mechanisms of melatonin action are still unknown. In birds, the peptide gonadotropin-inhibiting hormone (GnIH) has been shown to have inhibitory effects on reproductive activity and displays ...

journal_title：Endocrinology

authors： Revel FG,Saboureau M,Pévet P,Simonneaux V,Mikkelsen JD

更新日期：2008-03-01 00:00:00

abstract：:Previous studies from our laboratory have shown that messenger RNAs (mRNAs) coding for a cAMP-specific phosphodiesterase (PDE4A) are present in mature rat and mouse germ cells. However, no information is available about the properties of the expressed proteins. To determine their structure and regulation, the PDE4A is...

journal_title：Endocrinology

authors： Naro F,Zhang R,Conti M

更新日期：1996-06-01 00:00:00

abstract：:We have previously shown that plasma IGF 1 concentration is positively correlated with the rate of antler growth and have proposed that IGF 1 is stimulatory for antler growth in the red deer stag. Therefore to partly resolve the question of whether the IGF 1 was of circulating or local origin in relation to its effect...

journal_title：Endocrinology

authors： Suttie JM,Fennessy PF,Gluckman PD,Corson ID

更新日期：1988-06-01 00:00:00

abstract：:Estrogens are crucial for growth and function of the female genital tract. Recently, we showed that induction of uterine epithelial proliferation by estradiol is a paracrine event requiring an estrogen receptor-positive stroma. Growth factors [such as EGF (epidermal growth factor) ligands] are likely paracrine mediato...

journal_title：Endocrinology

authors： Hom YK,Young P,Wiesen JF,Miettinen PJ,Derynck R,Werb Z,Cunha GR

更新日期：1998-03-01 00:00:00

abstract：:In humans, the incidence and severity of abdominal aortic aneurysms (AAA) are greater in males than in females. Chronic infusion of angiotensin II (AngII) into apolipoprotein E-deficient (apoE(-/-)) mice promotes atherosclerosis and causes the formation of AAAs. Just as human males are more susceptible to developing A...

journal_title：Endocrinology

authors： Henriques TA,Huang J,D'Souza SS,Daugherty A,Cassis LA

更新日期：2004-08-01 00:00:00

abstract：:Caveolae and their principal component caveolin have been implicated in playing a major role in G protein-mediated transmembrane signaling. We examined whether caveolin interacts with adenylyl cyclase, an effector of G protein signaling, using a 20-mer peptide derived from the N-terminus scaffolding domain of caveolin...

journal_title：Endocrinology

authors： Toya Y,Schwencke C,Couet J,Lisanti MP,Ishikawa Y

更新日期：1998-04-01 00:00:00

abstract：:In virtually all studies with MA-10 cells, progesterone RIAs have been used to measure steroid synthesis. To test whether progesterone is a stable end product, we investigated the metabolism of added tritiated progesterone and pregnenolone in MA-10 cells over a period of 3 h. Steroids were then extracted, separated by...

journal_title：Endocrinology

authors： Rommerts FF,King SR,Span PN

更新日期：2001-12-01 00:00:00

abstract：:The present experiments investigated the time course of maternal modulation of GH secretion and examined the possible role of milk in the regulation of GH secretion in neonatal rats. Serum GH concentrations in neonatal rats were high at birth and declined over time postpartum. Separation of rat pups from their mothers...

journal_title：Endocrinology

authors： Kacsoh B,Terry LC,Meyers JS,Crowley WR,Grosvenor CE

更新日期：1989-09-01 00:00:00

abstract：:Although kisspeptin is the primary stimulator of gonadotropin-releasing hormone secretion and therefore the hypothalamic-pituitary-gonadal axis, recent findings suggest kisspeptin can also regulate additional neuroendocrine processes including release of growth hormone (GH). Here we show that central delivery of kissp...

journal_title：Endocrinology

authors： Foradori CD,Whitlock BK,Daniel JA,Zimmerman AD,Jones MA,Read CC,Steele BP,Smith JT,Clarke IJ,Elsasser TH,Keisler DH,Sartin JL

更新日期：2017-10-01 00:00:00

abstract：:The low-density lipoprotein receptor (Ldlr) is a key molecule involved with lipid clearance. The Ldlr(-/-) mouse has been used extensively as a model for studying atherosclerosis. This study sought to characterize the energy balance phenotype of Ldlr(-/-) mice with respect to weight gain, body composition, energy expe...

journal_title：Endocrinology

authors： Ngai YF,Quong WL,Glier MB,Glavas MM,Babich SL,Innis SM,Kieffer TJ,Gibson WT

更新日期：2010-11-01 00:00:00

abstract：:To study the localization of PRL in mammary epithelial cells (MEC) and to characterize PRL forms in serum, milk, and mammary tissue, two groups of lactating rats, a control group and a bromocriptine-treated group, were compared. In serum and milk from control rats, two forms of PRL (25 and 23 kDa) were detected by imm...

journal_title：Endocrinology

authors： Lkhider M,Delpal S,Bousquet MO

更新日期：1996-11-01 00:00:00

abstract：:Neuropeptide Y (NPY) is highly expressed in the hypothalamus, where it regulates feeding and energy homeostasis. Interestingly, NPY and its receptors are also expressed in peripheral tissues with roles in metabolism, including pancreatic islets. In islets, NPY is known to suppress insulin secretion acutely. In additio...

journal_title：Endocrinology

authors： Machida Y,Bruinsma C,Hallinger DR,Roper SM,Garcia E,Trevino MB,Nadler J,Ahima R,Imai Y

更新日期：2014-12-01 00:00:00

abstract：:Aberrant expression of ectopic G protein-coupled receptors (GPCRs) in adrenal cortex tissue has been observed in several cases of ACTH-independent macronodular adrenal hyperplasias and adenomas associated with Cushing's syndrome. Although there is clear clinical evidence for the implication of these ectopic receptors ...

journal_title：Endocrinology

authors： Mazzuco TL,Chabre O,Sturm N,Feige JJ,Thomas M

更新日期：2006-02-01 00:00:00

abstract：:Down regulation of insulin receptor number by insulin at physiological concentrating (10(-9) M) has been demonstrated in primary cultures of adult rat liver parenchymal cells in monolayer. However, because insulin is rapidly degraded in this culture system, special efforts are necessary to maintain the concentration o...

journal_title：Endocrinology

authors： Blackard WG,Guzelian PS,Small ME

更新日期：1978-08-01 00:00:00

abstract：:We previously reported a cooperative effect between insulin-like growth factor I (IGF-I) and 1,25-dihydroxy-vitamin D3 [1,25-(OH)2D3] in murine clonal osteoblastic cells, MCT3T3-E1. In the present study, the possible mechanism of interaction between these hormones was investigated. The effect of IGF-I on 1,25-(OH)2D3 ...

journal_title：Endocrinology

authors： Kurose H,Yamaoka K,Okada S,Nakajima S,Seino Y

更新日期：1990-04-01 00:00:00

abstract：:The primate brain was thought to contain only the GnRH known as mammalian GnRH (mGnRH). This study investigates whether a second form of GnRH exists within the primate brain. We found that brain extracts from adult stumptail and rhesus monkeys contained two forms of GnRH that were similar to mGnRH and chicken GnRH-II ...

journal_title：Endocrinology

authors： Lescheid DW,Terasawa E,Abler LA,Urbanski HF,Warby CM,Millar RP,Sherwood NM

更新日期：1997-12-01 00:00:00

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：:Wortmannin (5-100 nM), a specific phosphatidyinositol 3-kinase inhibitor, augmented 8 mM glucose-induced insulin secretion from control Sprague Dawley rat islets in a dose-dependent manner. This effect persisted after its removal from the perifusion medium; however, this augmenting effect was reduced by the calcium ch...

journal_title：Endocrinology

authors： Zawalich WS,Zawalich KC

更新日期：2000-09-01 00:00:00

abstract：:Specific receptors for tetradecapeptide somatostatin (S-14) in rat adrenal cortical membranes were quantitated by direct binding studies using [125I-Tyr11]S-14. Competitive inhibition of this radioligand by S-14 showed that these receptors constitute a single class of high affinity binding sites [dissociation constant...

journal_title：Endocrinology

authors： Srikant CB,Patel YC

更新日期：1985-05-01 00:00:00

abstract：:Signals derived from other pituitary cells can have a dramatic effect on PRL gene expression and secretion by mammotropes. However, the intracellular mechanisms by which these effects are manifested on the target cell remain unexplored. Inasmuch as calcium is a key modulator of both gene expression and hormone export ...

journal_title：Endocrinology

authors： Abraham EJ,Villalobos C,Frawley LS

更新日期：1998-06-01 00:00:00

abstract：:Rats start decreasing their food intake as early as 70 min after the first ingestion of a food deficient in threonine. A decrease of the limiting essential amino acid (EAA) in the plasma was proposed to be the first anorectic signal. Because many hormones regulate feeding behavior, we studied the effect of a meal (46 ...

journal_title：Endocrinology

authors： Feurté S,Nicolaïdis S,Gerozissis K

更新日期：2000-10-01 00:00:00