Gonadotropin release and cyclic nucleotides: evidence for luteinizing hormone-releasing hormone-induced elevation of guanosine 3',5'-monophosphate levels in gonadotrophs.

abstract：:Maternal obesity during pregnancy increases the risk of obesity in the offspring. Several observations have pointed to a causative role for the proinflammatory cytokine IL-6, but whether it is present in the fetal circulation and how it acts on the developing fetus are unclear. We first observed that postnatal day 0 o...

journal_title：Endocrinology

authors： Sanders TR,Kim DW,Glendining KA,Jasoni CL

更新日期：2014-07-01 00:00:00

abstract：:Incubation of bovine corpus luteum slices at 37 C with luteinizing hormone showed that 10.0 microng LH/ml caused a maximum rise in tissue cyclic AMP content within 15 min. Slices incubated with 1.0 or 0.1 microng LH/ml showed a much more gradual accumulation of this nucleotide. In the absence of added LH, a marked dec...

journal_title：Endocrinology

authors： Ling WY,Marsh JM

更新日期：1977-06-01 00:00:00

abstract：:Defining the molecular genetics of diabetes gives new insight into the underlying etiology and so should help improve treatment. The genetic etiology is now known for most patients with beta-cell monogenic diabetes, allowing genetic classification. We review how this genetic knowledge alters treatment. Patients with a...

journal_title：Endocrinology

authors： Hattersley AT,Pearson ER

更新日期：2006-06-01 00:00:00

abstract：:Around the onset of labor, uterine sensitivity to oxytocin (OT) increases tremendously. Although this is considered to reflect OT receptor (OTR) augmentation in myometrium, neither spatial expression of OTR nor the level of the receptor message during the course of pregnancy have been investigated at the molecular lev...

journal_title：Endocrinology

authors： Kimura T,Takemura M,Nomura S,Nobunaga T,Kubota Y,Inoue T,Hashimoto K,Kumazawa I,Ito Y,Ohashi K,Koyama M,Azuma C,Kitamura Y,Saji F

更新日期：1996-02-01 00:00:00

abstract：:Aging of the female reproductive system in rats is marked by discrete stages in the disappearance of regular estrous cyclicity. We determined at which point in the transition to acyclicity changes in the LH pulse generator could be detected by comparing pulsatile LH release in ovariectomized young rats to three groups...

journal_title：Endocrinology

authors： Scarbrough K,Wise PM

更新日期：1990-02-01 00:00:00

abstract：:The monocarboxylate transporter Mct10 (Slc16a10; T-type amino acid transporter) facilitates the cellular transport of thyroid hormone (TH) and shows an overlapping expression with the well-established TH transporter Mct8. Because Mct8 deficiency is associated with distinct tissue-specific alterations in TH transport a...

journal_title：Endocrinology

authors： Müller J,Mayerl S,Visser TJ,Darras VM,Boelen A,Frappart L,Mariotta L,Verrey F,Heuer H

更新日期：2014-01-01 00:00:00

abstract：:Cultured pulmonary artery endothelial (CPAE) cells possess specific high affinity receptors for atrial natriuretic peptide (ANP). CPAE cells were used to investigate the regulation of ANP receptors by glucocorticoids. Treatment of CPAE cells with dexamethasone (1 microM) produced a 69.3 +/- 23% (P less than 0.01) incr...

journal_title：Endocrinology

authors： Lanier-Smith KL,Currie MG

更新日期：1991-11-01 00:00:00

abstract：:GnRH neurons active in the preovulatory LH surge have been identified in several species using the early intermediate gene product, Fos, but the GnRH neurons active during episodic LH secretion remain unknown. In this study, we have used Fos and Fos-related antigens (FRA) to determine whether a subset of GnRH neurons ...

journal_title：Endocrinology

authors： Boukhliq R,Goodman RL,Berriman SJ,Adrian B,Lehman MN

更新日期：1999-12-01 00:00:00

abstract：:The concentration of testosterone (T) and 5alpha-dihydrotestosterone (DHT) in plasma, seminal fluid, and epididymis of male Wistar rats have been determined by radioimmunoassay. The DHT/T ratio rose from 0.1 in blood to 1 in testicular fluid and 4 in epididymal fluid. This ratio is 2 in tissues of "caput" epididymis a...

journal_title：Endocrinology

authors： Pujol A,Bayard F,Louvet JP,Boulard C

更新日期：1976-01-01 00:00:00

abstract：:The possibility of direct pituitary effects of sex steroids on gonadotropin gene expression and synthesis was studied in male rats. The animals were treated with a potent GnRH antagonist, Ac-D-pClPhe-D-pClPhe-D-Trp-Ser-Tyr-D-Arg-Leu-Arg-Pro-D-Ala-+ ++NH2CH3COOH (Org 30276; 0.5 mg/kg BW, sc, twice daily) for 10 days. G...

journal_title：Endocrinology

authors： Perheentupa A,Huhtaniemi I

更新日期：1990-06-01 00:00:00

abstract：:Ghrelin was recently identified as an endogenous ligand of the GH secretagogue receptor. The novel peptide hormone is produced by gastric A-like cells, and circulating levels rise before feeding, suggestive of ghrelin as an endogenous hunger factor. ghrelin stimulates food intake and promotes adiposity after periphera...

journal_title：Endocrinology

authors： Tang-Christensen M,Vrang N,Ortmann S,Bidlingmaier M,Horvath TL,Tschöp M

更新日期：2004-10-01 00:00:00

abstract：:The regulatory role of cAMP-dependent protein kinase in steroidogenesis was examined in luteal cell mitochondria prepared from heavily luteinized prepubertal rat ovaries. The cAMP-dependent protein kinase, localized in luteal mitochondria, comprised 5.5% of the total cellular protein kinase activity (cAMP-dependent). ...

journal_title：Endocrinology

authors： Inaba T,Wiest WG

更新日期：1985-07-01 00:00:00

abstract：:Prolactin (PRL) is tonically inhibited by dopamine (DA) released from neurons in the arcuate and periventricular nuclei. Kisspeptin plays a pivotal role in LH regulation. In rodents, kisspeptin neurons are found mostly in the anteroventral periventricular and arcuate nuclei, but the physiology of arcuate kisspeptin ne...

journal_title：Endocrinology

authors： Szawka RE,Ribeiro AB,Leite CM,Helena CV,Franci CR,Anderson GM,Hoffman GE,Anselmo-Franci JA

更新日期：2010-07-01 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：:The importance of a central or peripheral site of action in the blockade of ovulation induced by LHRH antagonists was investigated. To determine if hCG could induce ovulation in cycling animals given antiovulatory doses of 10 or 100 micrograms [N-Ac-D-p-Cl-Phe1,D-p-Cl-Phe2,D-Trp3,D-Arg6,D-Ala10] LHRH, the antagonist w...

journal_title：Endocrinology

authors： Nekola MV,Coy DH

更新日期：1985-02-01 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：:The neuropeptide kisspeptin (Kiss1) is integral to the advent of puberty and the generation of cyclical LH surges. Although many complex actions of Kiss1 are known, the mechanisms governing the processing/regulation of this peptide have not been unveiled. The metallo enzyme, endopeptidase 24.15 (thimet oligopeptidase)...

journal_title：Endocrinology

authors： Woitowich NC,Philibert KD,Leitermann RJ,Wungjiranirun M,Urban JH,Glucksman MJ

更新日期：2016-02-01 00:00:00

abstract：:The increase in glucagon-like peptide-1 (GLP-1) activity has emerged as a useful therapeutic tool for the treatment of type 2 diabetes mellitus. The actions of GLP-1 on β-cells and the nervous and digestive systems are well known. The action of this peptide in adipose tissue (AT), however, is still poorly defined. Fur...

journal_title：Endocrinology

authors： Vendrell J,El Bekay R,Peral B,García-Fuentes E,Megia A,Macias-Gonzalez M,Fernández Real J,Jimenez-Gomez Y,Escoté X,Pachón G,Simó R,Selva DM,Malagón MM,Tinahones FJ

更新日期：2011-11-01 00:00:00

abstract：:As part of an ongoing investigation of the role of metabolic activation of estrogens in the genesis of cancers such as estrogen-induced renal tumors in hamsters, we have 1) determined steroid-17 beta-oxidoreductase activity of microsomes and cytosol prepared from hamster kidney and liver; 2) compared the rates of 2-, ...

journal_title：Endocrinology

authors： Zhu BT,Bui QD,Weisz J,Liehr JG

更新日期：1994-11-01 00:00:00

abstract：:Exposure of FRTL-5 cells to iodide (I-) in excess of 3 microM suppresses the concentrative uptake of I-. The depression of I- uptake measured at the steady state is due to decrease in the rate of I- influx and not to an effect on I- efflux. Exposure to NaI is associated with decreased T4 secretion and also depressed N...

journal_title：Endocrinology

authors： Grollman EF,Smolar A,Ommaya A,Tombaccini D,Santisteban P

更新日期：1986-06-01 00:00:00

abstract：:Insulin-like growth factor-I (IGF-I), a prevalent growth factor secreted by bone cells, has important effects on bone remodeling. Hormones are known to regulate the synthesis of skeletal IGF-I, but there is limited information about the actions of growth factors on IGF-I synthesis. We tested the effects of basic fibro...

journal_title：Endocrinology

authors： Canalis E,Pash J,Gabbitas B,Rydziel S,Varghese S

更新日期：1993-07-01 00:00:00

abstract：:PTH, via the PTH/PTH-related protein receptor type 1 that couples to both protein kinase A (PKA) and protein kinase C (PKC) pathways, and the canonical Wnt-beta-catenin signaling pathway play important roles in bone formation. In the present study we have examined the interaction between the PTH and Wnt signaling path...

journal_title：Endocrinology

authors： Tobimatsu T,Kaji H,Sowa H,Naito J,Canaff L,Hendy GN,Sugimoto T,Chihara K

更新日期：2006-05-01 00:00:00

abstract：:Heat shock protein (HSP) synthesis increases in cells with a broad range of stress conditions. We recently showed that induction of HSP-70 is associated with inhibition of hormone-sensitive steroidogenesis, but not hormone-sensitive cAMP accumulation, in rat luteal cells by a mechanism associated with interruption of ...

journal_title：Endocrinology

authors： Khanna A,Aten RF,Behrman HR

更新日期：1995-04-01 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：:Nitric oxide (NO) has emerged as a potent regulator useful in alleviating estrogen deficiency bone loss. Osteoprotegerin (OPG) and receptor activator of nuclear factor-kappaB ligand (RANKL) play important roles in regulating osteoclastogenesis. Although recent studies have reported NO donor attenuation of bone loss, t...

journal_title：Endocrinology

authors： Wang FS,Wang CJ,Chen YJ,Huang YT,Huang HC,Chang PR,Sun YC,Yang KD

更新日期：2004-05-01 00:00:00

abstract：:To test the hypothesis that insulin mediators serve as the signal transduction system for insulin's steroidogenic actions in human placental cytotrophoblasts, we examined the effects of two inositolglycan insulin mediators, the insulin pH 2.0 chiro-inositol mediator (IM-pH 2.0) and the insulin pH 1.3 myo-inositol medi...

journal_title：Endocrinology

authors： Nestler JE,Romero G,Huang LC,Zhang CG,Larner J

更新日期：1991-12-01 00:00:00

abstract：:Recently, California condors (Gymnogyps californianus) have been reintroduced to coastal regions of California where they feed on marine mammal carcasses. There is evidence that coastal-dwelling condors experience reproductive issues, such as eggshell thinning, likely resulting from exposure to endocrine-disrupting ch...

journal_title：Endocrinology

authors： Felton RG,Steiner CC,Durrant BS,Keisler DH,Milnes MR,Tubbs CW

更新日期：2015-12-01 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：:In an attempt to further define the optimum experimental conditions for the in vitro study of PRL endocrinology, the effect of extracellular leucine concentration on PRL secretion was assessed. Rat pituitary cells, maintained in short term monolayer culture, were washed free of serum and placed in Minimum Essential Me...

journal_title：Endocrinology

authors： Cross M,Walker AM

更新日期：1984-01-01 00:00:00

abstract：:Retinoic acid (RA), a naturally occurring metabolite of vitamin A, plays an essential role in regulating cellular growth, differentiation, and death in a variety of tissues, particularly during fetal development. However, essentially nothing is known of the effects of RA on fetal gametogenesis. Using a recently valida...

journal_title：Endocrinology

authors： Morita Y,Tilly JL

更新日期：1999-06-01 00:00:00