Changes in insulin, somatostatin, and glucagon secretion during the development of obesity in ventromedial hypothalamic-lesioned rats.

abstract：:T47D human breast cancer cells and BEN human lung cancer cells were preincubated with the tumor-promoting phorbol ester phorbol 12-myristate 13-acetate (PMA). In both cell lines there was a decrease in the binding of 125I-labeled salmon calcitonin ([125I]sCT) which was dependent on the dose and time of exposure to PMA...

journal_title：Endocrinology

authors： Findlay DM,Michelangeli VP,Robinson PJ

更新日期：1989-11-01 00:00:00

abstract：:With a recently developed microdissection technique, four circumventricular organs were removed from the rat brain, and their contents of LHRH and TRH were measured. The subfornical organ, the organon vasculosum lamia terminalis, the subcommissural organ, the area postrema all contained significant quantities of both ...

journal_title：Endocrinology

authors： Kizer JS,Palkovits M,Brownstein MJ

更新日期：1976-02-01 00:00:00

abstract：:Ghrelin stimulates and leptin inhibits appetite by modulating neuropeptide Y (NPY) signaling in the hypothalamus. Analysis of plasma ghrelin and leptin by sensitive radioimmunoassays showed that the two peripheral hormones are secreted in pulsatile fashion in rats consuming ad libitum rat chow. Fasting augmented all p...

journal_title：Endocrinology

authors： Bagnasco M,Kalra PS,Kalra SP

更新日期：2002-02-01 00:00:00

abstract：:In the developing follicle, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are the primary stimulators of steroidogenesis in granulosa and theca cells. The steroidogenic actions of both these gonadotropins are largely if not exclusively mediated through cAMP. Previous studies have shown that EGF and T...

journal_title：Endocrinology

authors： Gangrade BK,Davis JS,May JV

更新日期：1991-11-01 00:00:00

abstract：:Mammary gland explants from mature virgin mice, rats, and rabbits exhibit an increased rate of both DNA and casein syntheses when cultured in the presence of specific combinations of insulin, hydrocortisone, and PRL. If cytosine arabinoside, a potent inhibitor of DNA synthesis, is added to the culture medium, casein s...

journal_title：Endocrinology

authors： Nicholas KR,Bolander FF Jr,Sankaran L,Topper YJ

更新日期：1983-03-01 00:00:00

abstract：:PRL and placental lactogen (PL) play key roles in maintaining the rodent corpus luteum through pregnancy. Suppressors of cytokine signaling (SOCS) have been shown to decrease cell sensitivity to cytokines, including PRL, and so here we have addressed the issue of whether luteolysis induced by prostaglandin F(2alpha) (...

journal_title：Endocrinology

authors： Curlewis JD,Tam SP,Lau P,Kusters DH,Barclay JL,Anderson ST,Waters MJ

更新日期：2002-10-01 00:00:00

abstract：:In male hamsters, light deprivation was reported to reduce both testis weight and prolactin (PRL) levels. Therefore, we decided to examine the effects of PRL on testicular function in hamsters exposed to short day-length. Adult hamsters were exposed to 5 h of light per day to induce gonadal atrophy, and, starting two ...

journal_title：Endocrinology

authors： Bartke A,Croft BT,Dalterio S

更新日期：1975-12-01 00:00:00

abstract：:It is known that the circadian rhythm in hepatic phosphoenolpyruvate carboxykinase expression (a limiting catalytic step of gluconeogenesis) and hepatic glucose production is maintained by both daily oscillation in autonomic inputs to the liver and night feeding behavior. However, increased glycemia and reduced melato...

journal_title：Endocrinology

authors： Nogueira TC,Lellis-Santos C,Jesus DS,Taneda M,Rodrigues SC,Amaral FG,Lopes AM,Cipolla-Neto J,Bordin S,Anhê GF

更新日期：2011-04-01 00:00:00

abstract：:Macrophages are known to release a lipophilic factor that stimulates testosterone production by Leydig cells. This macrophage-derived factor (MDF) is thought to be physiologically relevant, because removal of macrophages from the testis results in altered testosterone secretion and reduced fertility. The purpose of th...

journal_title：Endocrinology

authors： Nes WD,Lukyanenko YO,Jia ZH,Quideau S,Howald WN,Pratum TK,West RR,Hutson JC

更新日期：2000-03-01 00:00:00

abstract：:Previous studies have established the presence of an extrahypothalamic GnRH in a variety of tissues. GnRH receptor is known to be present in the placenta, which produces and secretes the decapeptide from the very early stages of placentation. We hypothesized that GnRH may play a role in the preimplantation development...

journal_title：Endocrinology

authors： Raga F,Casañ EM,Kruessel J,Wen Y,Bonilla-Musoles F,Polan ML

更新日期：1999-08-01 00:00:00

abstract：:Estrogen is implicated in many autoimmune diseases and is a robust immunomodulator. For example, it regulates interferon (IFN)-gamma, a cytokine believed to up-regulate inducible nitric oxide synthase (iNOS). A notable gap in the literature is a lack of information on the regulation of nitric oxide in immune tissues b...

journal_title：Endocrinology

authors： Karpuzoglu E,Fenaux JB,Phillips RA,Lengi AJ,Elvinger F,Ansar Ahmed S

更新日期：2006-02-01 00:00:00

abstract：:Pineal denervation by superior cervical ganglionectomy (Gx) decreased high affinity binding of estradiol (E2) to the pineal cytosol of female rats and of testosterone to the cytosol of male rats by 40 and 26% and by 75 and 80%, 5 and 14 days after sugery; hormone binding remained unchanged up to 24 h after surgery. Bi...

journal_title：Endocrinology

authors： Cardinali DP,Gómez E,Rosner JM

更新日期：1976-04-01 00:00:00

abstract：:Profound somatotroph hypoplasia in the dwarf (dw/dw) rat is accompanied by an estrogen-dependent induction of prolactin secretion by the GH secretagogue, GHRP-6. Using electron microscopy, we demonstrated that the reduction in the somatotroph population in the dw/dw pituitary is accompanied by the presence of a morpho...

journal_title：Endocrinology

authors： Huerta-Ocampo I,Christian HC,Thompson NM,El-Kasti MM,Wells T

更新日期：2005-11-01 00:00:00

abstract：:Complementary DNA-encoding proteins with high homology to steroidogenic acute regulatory proteins (StAR) of mammals were cloned from rainbow trout head kidney and a mixture of several brook trout tissues. A cDNA encoding an MLN64 homolog was also cloned from brook trout. The C-terminal domains of rainbow trout StAR an...

journal_title：Endocrinology

authors： Kusakabe M,Todo T,McQuillan HJ,Goetz FW,Young G

更新日期：2002-06-01 00:00:00

abstract：:In the Syrian hamster, a sharp peak in pineal melatonin occurs toward the end of the dark period. In the present communication, we describe characteristics of this rhythm. First, the time of the initial increase in pineal melatonin is not altered by daily melatonin injections that induce gonadal regression. Second, th...

journal_title：Endocrinology

authors： Tamarkin L,Reppert SM,Klein DC,Pratt B,Goldman BD

更新日期：1980-11-01 00:00:00

abstract：:Mice with somatotrope-specific deletion of the Janus kinase binding site in leptin receptors are GH deficient as young adults and become obese by 6 months of age. This study focused on the metabolic status of young (3-4.5 month old) preobese mutant mice. These mutants had normal body weights, lean body mass, serum lep...

journal_title：Endocrinology

authors： Akhter N,Odle AK,Allensworth-James ML,Haney AC,Syed MM,Cozart MA,Chua S,Kineman R,Childs GV

更新日期：2012-10-01 00:00:00

abstract：:The effects of short term (1-month) and life-long 60% ad libitum food restriction on the adrenocortical response to restraint stress were compared in young and aged Fischer 344 rats. In rats restricted for 1 month (study 1), the adrenocortical response differed as a function of age. In 8-month-old animals, the initial...

journal_title：Endocrinology

authors： Stewart J,Meaney MJ,Aitken D,Jensen L,Kalant N

更新日期：1988-10-01 00:00:00

abstract：:Since hypophysectomy and GH deficiency are associated with decreases in hypothalamic content and release of SRIF, it was of interest to determine whether these hormonal alterations also affect peripheral tissue levels of SRIF. Hypophysectomized (hypox) rats were studied at various times after surgery and compared with...

journal_title：Endocrinology

authors： Recant L,Voyles NR,Wilkins SD,Fairtile RD,King C

更新日期：1984-12-01 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：:Fasting in rodents is characterized by decreases in serum T4 and T3 levels but no compensatory increase in serum TSH level. The types 1 and 2 deiodinases (D1 and D2) are postulated to play key roles in mediating these changes. However, serum T4 and T3 levels in fasted 5'-deiodinase-deficient mice decreased by at least...

journal_title：Endocrinology

authors： Galton VA,Hernandez A,St Germain DL

更新日期：2014-08-01 00:00:00

abstract：:The regulation of delta 5-3 beta-hydroxysteroid dehydrogenase-isomerase (3 beta-HSD) was studied in primary cultures of rat adrenocortical cells. In the absence of ACTH, this enzymic activity was found to decay with a half-life of 3.1 days, which was similar to the half-life of the enzyme activity induced by ACTH in v...

journal_title：Endocrinology

authors： Rybak SM,Ramachandran J

更新日期：1982-08-01 00:00:00

abstract：:The role of PRL in mammalian salt and water balance remains controversial. To avoid the methodological problems of exogenous PRL administration, endogenous hyperprolactinemia was established in normal rats by implantation of extra anterior pituitary glands under the kidney capsule. To eliminate excess glucocorticoid s...

journal_title：Endocrinology

authors： Adler RA,Herzberg VL,Brinck-Johnsen T,Sokol HW

更新日期：1986-04-01 00:00:00

abstract：:GH3 rat pituitary cells have L-type voltage-gated calcium channels, and both the rate of uptake of 45Ca2+ and the concentration of intracellular free calcium ion ([Ca2+]i) are increased by depolarization with high potassium. Cells incubated for several days with 10 nM epidermal growth factor (EGF) responded to depolar...

journal_title：Endocrinology

authors： Hinkle PM,Nelson EJ,Haymes AA

更新日期：1993-07-01 00:00:00

abstract：:The objectives of this study were to investigate the presence of immunoreactive GnRH (irGnRH) in scleractinian coral, Euphyllia ancora, study its seasonal variation, and evaluate its biological activity. irGnRH was detected and quantified in coral polyps. The biological activity of coral irGnRH was tested on pituitary...

journal_title：Endocrinology

authors： Twan WH,Hwang JS,Lee YH,Jeng SR,Yueh WS,Tung YH,Wu HF,Dufour S,Chang CF

更新日期：2006-01-01 00:00:00

abstract：:To evaluate the possible existence of masked gonadotropin receptors in the corpus luteum, we characterized the effects of alcohols and neuraminidase on [125I]iodohuman LH binding to in vitro preparations of luteal tissue from the rhesus monkey and pseudopregnant rat. The presence of 1-8% (vol/vol) ethanol enhanced spe...

journal_title：Endocrinology

authors： Danforth DR,Stouffer RL

更新日期：1985-08-01 00:00:00

abstract：:We previously found that the sustained rise in active sodium transport by the toad urinary bladder after exposure to insulin is associated with the synthesis of a membrane protein with a molecular weight of 25,000. Studying the effects of insulin on the incorporation of uridine into RNA of epithelial cells of the blad...

journal_title：Endocrinology

authors： Cobb MH,Yang CP,Scott WN

更新日期：1981-12-01 00:00:00

abstract：:The steroid sex hormone progesterone (P) induces the expression of a variety of genes through a signal transduction pathway mediated by the P receptor, a DNA-binding regulator of transcription. To identify genes and gene networks that are P dependent in the rhesus endometrium, we used a powerful technique employing su...

journal_title：Endocrinology

authors： Ace CI,Balsamo M,Le LT,Okulicz WC

更新日期：1994-03-01 00:00:00

abstract：:Long-term glucocorticoid treatment impairs the survival and bone formation of osteogenic cells, leading to bone mass loss. The Wnt inhibitor Dickkopf-1 (DKK1) acts as a potent bone-remodeling factor that mediates several types of skeletal disorders. Whereas excess glucocorticoid is known to disturb Wnt signaling in os...

journal_title：Endocrinology

authors： Wang FS,Ko JY,Yeh DW,Ke HC,Wu HL

更新日期：2008-04-01 00:00:00

abstract：:In rat uterus and prostate, 7 alpha, 17 alpha-dimethyl-19-nortestosterone (DMNT) binds to the androgen receptor specifically and with high affinity. However, this steroid does not bind to glucocorticoid receptors, since it does not displace binding of [3H]triamcinolone acetonide in calf thymus cytosol. In calf uterine...

journal_title：Endocrinology

authors： Traish AM,Müller RE,Wotiz HH

更新日期：1986-04-01 00:00:00

abstract：:In addition to androgens that are essential for maintenance of prostate growth and function, nonandrogenic hormones must also be considered to explain some regulatory events occurring in the prostate. The detection of LH/CG receptor (LH/CG-R) gene expression in some nongonadal tissues, has led us to consider LH as a p...

journal_title：Endocrinology

authors： Reiter E,McNamara M,Closset J,Hennen G

更新日期：1995-03-01 00:00:00