Neuregulin 1 Regulates Proliferation of Leydig Cells to Support Spermatogenesis and Sexual Behavior in Adult Mice.

abstract：:The heart has epicardial adipose tissue that produces adipokines and mesenchymal stem cells. Systemic adipose tissue is involved in the pathophysiology of obesity-related heart diseases. However, the method for analyzing the direct interaction between adipose tissue and cardiomyocytes has not been established. Here we...

journal_title：Endocrinology

authors： Anan M,Uchihashi K,Aoki S,Matsunobu A,Ootani A,Node K,Toda S

更新日期：2011-04-01 00:00:00

abstract：:A functioning rat thyroid cell line (FRTL-5) responds acutely to the addition of TSH, norepinephrine, and the Ca2+ ionophore A23187 by a depression in iodide (I-) uptake levels. The decrease in I- content measured at the steady state depends on the presence of external Ca2+ and can be accounted for by an effect on sti...

journal_title：Endocrinology

authors： Weiss SJ,Philp NJ,Grollman EF

更新日期：1984-04-01 00:00:00

abstract：:In the present study, steroidogenesis in two different Leydig tumor cell lines was compared. One, the MA-10 mouse tumor cell line, produces steroids and the steroidogenic acute regulatory (StAR) protein only when stimulated by trophic hormones and cAMP analogs. The other, the R2C rat tumor cell line, produces steroids...

journal_title：Endocrinology

authors： Jo Y,Stocco DM

更新日期：2004-12-01 00:00:00

abstract：:In seasonally breeding species, an animal's photoperiodic history (the daylength or photoperiod previously experienced) influences the reproductive response to new photoperiods. However, this has only been examined over a relatively narrow range of photoperiods. We assessed whether Djungarian hamsters (Phodopus sungor...

journal_title：Endocrinology

authors： Rivkees SA,Hall DA,Weaver DR,Reppert SM

更新日期：1988-06-01 00:00:00

abstract：:The protein thiol-modifying agent arsenite, a potent activator of stress signaling, was used to examine the involvement of MAPKs in the regulation of cardiac substrate uptake. Arsenite strongly induced p38 MAPK phosphorylation in isolated rat cardiac myocytes but also moderately enhanced phosphorylation of p42/44 ERK ...

journal_title：Endocrinology

authors： Luiken JJ,Momken I,Habets DD,El Hasnaoui M,Coumans WA,Koonen DP,Glatz JF,Bonen A

更新日期：2006-11-01 00:00:00

abstract：:To investigate the possibility that a common phenomenon might exist by which glucocorticoids influence responses to thyroid hormones, the cytosol levels of four proteins were measured after 2 days of treatment with L-T3 (T3; 50 micrograms/100 g. day 2) and/or cortisone (2 mg/100 g./day) in adult male hypothyroid rats....

journal_title：Endocrinology

authors： Shapiro LE,Sachchidananda J

更新日期：1982-08-01 00:00:00

abstract：:Permanent effects of postnatal gonads on dopamine (DA)-mediated regulation of PRL secretion were examined in adult male rats of the Wistar-Imamichi strain. Rats were bilaterally orchidectomized at varying postnatal days, i.e. 8 h after birth [neonatal castration (NC)] or at 1, 2, 3, 4, or 6 weeks of age, and subjected...

journal_title：Endocrinology

authors： Watanobe H,Takebe K

更新日期：1987-06-01 00:00:00

abstract：:Pituitary glands from ovariectomized F-344 rats bearing diethylstilbestrol-containing capsules for 70-100 days were dissociated and separated into three size classes by unit gravity sedimentation. The average percentage of large mammotrophs in fraction I was 86 +/- (SE) 2%, the percentage of intermediate-sized mammotr...

journal_title：Endocrinology

authors： Hymer WC,Motter KA

更新日期：1988-05-01 00:00:00

abstract：:Daily nocturnal (N) and diurnal (D) surges of PRL are characteristic of a pseudopregnancy (psp) induced by cervical stimulation (CS). These semicircadian surges persist for 13-14 days, after which time they cease, and psp ends. The purpose of this study was to describe the involvement of the ovarian steroids in the ma...

journal_title：Endocrinology

authors： Gorospe WC,Freeman ME

更新日期：1981-04-01 00:00:00

abstract：:Hypoxia-inducible factor-1 (HIF-1) is a decisive element for the transcriptional regulation of many genes expressed in hypoxic conditions. In vascular smooth muscle cells, the vasoactive hormone angiotensin II (Ang II) is a very potent inducer and activator of HIF-1. As opposed to hypoxia, which induces HIF-1alpha by ...

journal_title：Endocrinology

authors： Lauzier MC,Pagé EL,Michaud MD,Richard DE

更新日期：2007-08-01 00:00:00

abstract：:Cysteamine [2-aminoethanethiol (CySH)] reduces measurable PRL concentrations in vivo and in vitro. Since secretion is also inhibited, CySH may block conversion from a poorly assayable hormone storage form(s) to readily assayable, releasable PRL. This would represent a previously unrecognized mechanism for secretory re...

journal_title：Endocrinology

authors： Lorenson MY,Jacobs LS

更新日期：1984-10-01 00:00:00

abstract：:In the spiny dogfish (Squalus acanthias), germ cells and adjacent steroidogenic elements are topographically segregated within the testis according to stage of development. In the experiments reported here, we have taken advantage of this favorable anatomical arrangement to demonstrate stage-specific variations in ste...

journal_title：Endocrinology

authors： Callard GV,Pudney JA,Mak P,Canick JA

更新日期：1985-10-01 00:00:00

abstract：:This study was conducted to determine the feasibility of using replication-defective adenovirus vectors to express receptors for LH. Two vectors were constructed, one that directs the expression of wild-type human LH receptor (LHr; AdRSVLHrwt) and another that directs the expression of the constitutively activated D57...

journal_title：Endocrinology

authors： Bebia Z,Somers JP,Liu G,Ihrig L,Shenker A,Zeleznik AJ

更新日期：2001-06-01 00:00:00

abstract：:The maximum amounts of angiotensins II and III that were confined to the kidney during intrarenal arterial administration in conscious dogs were determined to be 2 and 12 pmol/kg X min, respectively. These doses were infused chronically intrarenally to uninephrectomized dogs. A significant reduction in urinary volume ...

journal_title：Endocrinology

authors： Dickstein GM,Woodson JF,Lamb NE,Rose CE Jr,Peach MJ,Carey RM

更新日期：1985-11-01 00:00:00

abstract：:In this study on highly enriched populations of cultured rat corticotropes, Ca2+ channel inhibitors were used to identify subtypes of the high threshold Ca2+ channel current under voltage clamp conditions. From a holding potential (-50 mV) that eliminated the low threshold T-type current, 52 +/- 4% of the total curren...

journal_title：Endocrinology

authors： Kuryshev YA,Childs GV,Ritchie AK

更新日期：1995-09-01 00:00:00

abstract：:The 3'5'-cyclic GMP (cGMP) pathway is known to influence ovarian functions, including steroidogenesis, ovulation, and granulosa cell proliferation. We show here that cGMP-phosphodiesterase (PDE) activity increased in a gonadotropin-dependent manner more than 3-fold in the cumulus-oocyte complex (COC) after 24 h in vit...

journal_title：Endocrinology

authors： Sasseville M,Côté N,Gagnon MC,Richard FJ

更新日期：2008-11-01 00:00:00

abstract：:In order to compare, in vitro, the TSH suppressive effects of iodothyronines, rat pituitary quarters were first preincubated with T4, T3, rT3, or 3,3'-diiodothyronine (T2) in Gey and Gey buffer containing 1% bovine serum albumin for 2 h at 37 C and then incubated at 37 C for 1 h with the iodothyronine under study and ...

journal_title：Endocrinology

authors： Chopra IJ,Carlson HE,Solomon DH

更新日期：1978-08-01 00:00:00

abstract：:Although the main role of prolactin (PRL) in pregnant rodents is to sustain progesterone production by the corpus luteum, progesterone treatment of PRL or PRL receptor (PRL-R) null mice is unable to prevent fetal loss. We have previously shown that the rat decidua is a site of PRL production and action. In this report...

journal_title：Endocrinology

authors： Bao L,Tessier C,Prigent-Tessier A,Li F,Buzzio OL,Callegari EA,Horseman ND,Gibori G

更新日期：2007-05-01 00:00:00

abstract：:Embryo implantation is a highly synchronized event between an activated blastocyst and a receptive endometrium. The success of this process relies on the dynamic interplay of estrogen (E(2)) and progesterone (P(4)), however, the details of this interaction are not entirely clear. Recent data implicate E(2) and P(4) in...

journal_title：Endocrinology

authors： Frolova A,Flessner L,Chi M,Kim ST,Foyouzi-Yousefi N,Moley KH

更新日期：2009-03-01 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：:Although atrial and brain natriuretic peptides are well known to be involved in the regulation of cardiovascular and endocrine functions as circulating hormones, the roles of the C-type natriuretic peptide (CNP) remain unknown. We examined the effects of CNP on the secretion of aldosterone and cyclic nucleotides from ...

journal_title：Endocrinology

authors： Kawai M,Naruse M,Yoshimoto T,Naruse K,Shionoya K,Tanaka M,Morishita Y,Matsuda Y,Demura R,Demura H

更新日期：1996-01-01 00:00:00

abstract：:It has been suggested that ewes carrying the Booroola gene (Fec(B)) consistently ovulate more follicles because they recruit more primordial follicles and/or have a lower rate of atresia. If the former is correct, the pool of follicles would be depleted sooner in Fec(B) animals. We have studied follicular dynamics and...

journal_title：Endocrinology

authors： Gonzalez-Bulnes A,Souza CJ,Campbell BK,Baird DT

更新日期：2004-06-01 00:00:00

abstract：:The short loop feedback effect of PRL was studied in young (4-5 months of age) and old (24-26 months of age) ovariectomized rats after a single iv injection of bovine PRL (bPRL, 500 micrograms/100 g BW) or BSA (500 micrograms/100 g BW). Blood samples were collected via intraatrial cannula every 20 min for assay of PRL...

journal_title：Endocrinology

authors： Sarkar DK,Miki N,Meites J

更新日期：1983-10-01 00:00:00

abstract：:The effects of K+ depletion and ouabain (0.1, 0.5, and 1 mM) on glucagon and insulin release from the in vitro perfused rat pancreas were studied in the absence or presence of arginine (10 mM). In the absence of arginine, K+ depletion resulted in an inhibition of glucagon release, both at a low (2.8 mM) and a higher (...

journal_title：Endocrinology

authors： Leclercq-Meyer V,Marchand J,Malaisse WJ

更新日期：1983-07-01 00:00:00

abstract：:We analyzed the mechanism by which a Graves' disease-associated C/T polymorphism in the Kozak sequence of CD40 affects CD40 expression. CD40 expression levels on B cells in individuals with CT and TT genotypes were decreased by 13.3 and 39.4%, respectively, compared with the levels in CC genotypes (P = 0.012). Similar...

journal_title：Endocrinology

authors： Jacobson EM,Concepcion E,Oashi T,Tomer Y

更新日期：2005-06-01 00:00:00

abstract：:Free radical production and lipid peroxidation are potentially important mediators in testicular physiology and toxicology. The cytochrome P450 enzymes of the steroidogenic pathway are known to produce free radicals. The present study was conducted to elucidate in vivo the gonadotropin regulation of free radical-media...

journal_title：Endocrinology

authors： Peltola V,Huhtaniemi I,Metsa-Ketela T,Ahotupa M

更新日期：1996-01-01 00:00:00

abstract：:Proper development of the seminiferous tubules (or testis cords in embryos) is critical for male fertility. Sertoli cells, somatic components of the seminiferous tubules, serve as nurse cells to the male germline, and thus their numbers decide the quantity of sperm output in adulthood. We previously identified activin...

journal_title：Endocrinology

authors： Archambeault DR,Tomaszewski J,Childs AJ,Anderson RA,Yao HH

更新日期：2011-11-01 00:00:00

abstract：:Whole saliva collected from rat, mouse, and human sources was found to contain high concentrations of transforming growth factor-alpha (TGF alpha) when analyzed by RIA. The concentrations of TGF alpha in unstimulated human saliva (age, 30-45 yr; n = 10; 1.5 +/- 3.1 nM) was reduced with age (age, 55-70 yr; n = 10; 0.4 ...

journal_title：Endocrinology

authors： Humphreys-Beher MG,Macauley SP,Chegini N,van Setten G,Purushotham K,Stewart C,Wheeler TT,Schultz GS

更新日期：1994-02-01 00:00:00

abstract：:Acute effects of bisphenol (BPA), an environmental chemical, on estradiol (17α or β-E2)-dependent recognition memory and dendritic spines in the medial prefrontal cortex and hippocampus were investigated in adult female rats. Ovariectomized rats received BPA 30 min before or immediately after a sample trial (viewing o...

journal_title：Endocrinology

authors： Inagaki T,Frankfurt M,Luine V

更新日期：2012-07-01 00:00:00

abstract：:GH feeds back at the level of the central nervous system to alter the release of somatostatin and GRF, resulting in altered GH release. The purpose of this study was to see whether the concentration of GH, impinging directly on the somatotrophs of the adenohypophysis, would alter the responsiveness of the somatotrophs...

journal_title：Endocrinology

authors： Kraicer J,Lussier B,Moor BC,Cowan JS

更新日期：1988-04-01 00:00:00