Thyroid hormone economy in pregnant rats near term: a "physiological" animal model of nonthyroidal illness?

abstract：:Although estrogens are neuroprotective in young adult animal models of stroke, clinical trials demonstrate that estrogens increase the incidence and severity of stroke in aged women. We have previously shown that experimental stroke pathophysiology differs between young adult and aged rats. The aim of this study was t...

journal_title：Endocrinology

authors： Leon RL,Li X,Huber JD,Rosen CL

更新日期：2012-07-01 00:00:00

abstract：:A parotid hormone (PH-A beta) has been isolated and purified from porcine parotid glands. The biological effect of the hormone is the stimulation of a dentinal fluid transport (DFT) in molar teeth of rats. The method for purifying the PH-A beta includes: extraction at pH 7 and 5, ultrafiltration through Amicon membran...

journal_title：Endocrinology

authors： Tieche JM,Leonora J,Steinman RR

更新日期：1980-06-01 00:00:00

abstract：:Levels of bovine placental lactogen (bPL) have been measured in the serum of dairy and beef cattle and in the milk and amniotic fluid of pregnant animals with a highly specific radioimmunoassay. In both dairy and beef cows, serum bPL levels remain low (less than 50 ng/ml) during the first two trimesters and then rise ...

journal_title：Endocrinology

authors： Bolander FF,Ulberg LC,Fellows RE

更新日期：1976-11-01 00:00:00

abstract：:Suppression of spermatogenesis in LBNF1 rats by treatment with the GnRH agonist Zoladex combined with the antiandrogen flutamide was evaluated in order to rapidly achieve protection of spermatogenic stem cells against procarbazine with clinically used drugs. Zoladex-flutamide treatment required 3 weeks to suppress the...

journal_title：Endocrinology

authors： Kangasniemi M,Wilson G,Huhtaniemi I,Meistrich ML

更新日期：1995-08-01 00:00:00

abstract：:The effect of collagenase dissociation of virgin mouse mammary glands on the level of mammary epithelial cytosolic estrogen receptors (ER) and progesterone receptors (PR) was assessed. After cell dissociation, ER was present in mammary epithelial cells at concentrations similar to those found in the whole gland. Howev...

journal_title：Endocrinology

authors： Edery M,Imagawa W,Larson L,Nandi S

更新日期：1985-01-01 00:00:00

abstract：:The endocrine-disrupting chemical bisphenol A (BPA) increases adipose tissue mass in vivo and promotes adipogenesis in vitro; however, mechanisms explaining BPA's obesogenic effect remain unknown. We investigated the effects of gestational BPA and its analog, bisphenol S (BPS), exposure on the adipogenic differentiati...

journal_title：Endocrinology

authors： Pu Y,Gingrich JD,Steibel JP,Veiga-Lopez A

更新日期：2017-11-01 00:00:00

abstract：:IL-1, secreted by human embryos and trophoblast cells, is important for successful implantation and pregnancy. We previously reported that IL-1beta induced IL-8 production in human endometrial stromal cells (ESCs) and that induction was regulated by substances implicated in implantation. In the present study using hum...

journal_title：Endocrinology

authors： Hirota Y,Osuga Y,Hasegawa A,Kodama A,Tajima T,Hamasaki K,Koga K,Yoshino O,Hirata T,Harada M,Takemura Y,Yano T,Tsutsumi O,Taketani Y

更新日期：2009-01-01 00:00:00

abstract：:It is established that androgens and unidentified Sertoli cell (SC)-derived factors can influence the development of adult Leydig cells (LC) in rodents, but the mechanisms are unclear. We evaluated adult LC development and function in SC-selective androgen receptor (AR) knockout (SCARKO) and complete AR knockout (ARKO...

journal_title：Endocrinology

authors： De Gendt K,Atanassova N,Tan KA,de França LR,Parreira GG,McKinnell C,Sharpe RM,Saunders PT,Mason JI,Hartung S,Ivell R,Denolet E,Verhoeven G

更新日期：2005-09-01 00:00:00

abstract：:TGF-β plays an important role in the progression of prostate cancer. It exhibits both tumor suppressor and tumor-promoting activities. Correlations between cyclooxygenase (COX)-2 overexpression and enhanced production of prostaglandin (PG)E2 have been implicated in cancer progression; however, there are no studies ind...

journal_title：Endocrinology

authors： Vo BT,Morton D Jr,Komaragiri S,Millena AC,Leath C,Khan SA

更新日期：2013-05-01 00:00:00

abstract：:The present studies examine the initial events in the action of PTH, namely receptor binding and adenylate cyclase activation in the postobstructed canine kidney. Both kidneys were removed from five mongrel dogs 2 h after relief of unilateral ureteral obstruction (UUO) of 42 h duration. Basolateral membranes (BLM) wer...

journal_title：Endocrinology

authors： Stokes TJ,Martin KJ,Klahr S

更新日期：1985-03-01 00:00:00

abstract：:Periconceptional undernutrition (PCUN) results in an earlier prepartum activation of the pituitary-adrenal axis in twin compared with singleton fetuses. We have tested the hypotheses that the functional development of the fetal sheep adrenal is delayed in twins compared with singletons in early gestation and that PCUN...

journal_title：Endocrinology

authors： MacLaughlin SM,Walker SK,Kleemann DO,Sibbons JP,Tosh DN,Gentili S,Coulter CL,McMillen IC

更新日期：2007-04-01 00:00:00

abstract：:Neuronal remodeling in response to deafferenting lesions in the brain can be enhanced by estradiol (E2). Astrocytes are among the targets of E2 in complex interactions with neurons and may support or inhibit neuronal remodeling. In ovariectomized female rats given entorhinal cortex lesions, E2 replacement inhibited th...

journal_title：Endocrinology

authors： Rozovsky I,Wei M,Stone DJ,Zanjani H,Anderson CP,Morgan TE,Finch CE

更新日期：2002-02-01 00:00:00

abstract：:Single-minded 1 (SIM1) mutations are associated with obesity in mice and humans. Haploinsufficiency of mouse Sim1 causes hyperphagic obesity with increased linear growth and enhanced sensitivity to a high-fat diet, a phenotype similar to that of agouti yellow and melanocortin 4 receptor knockout mice. To investigate t...

journal_title：Endocrinology

authors： Kublaoui BM,Holder JL Jr,Tolson KP,Gemelli T,Zinn AR

更新日期：2006-10-01 00:00:00

abstract：:Because of the importance of estrogen in osteoporosis, the effects of decreased estrogen production using sensitive measurements of bone mineral metabolism were studied in oophorectomized rats. Serum levels of ionized calcium, bone gla protein (BGP), vitamin D metabolites (25-hydroxyvitamin D and 1,25-dihydroxyvitamin...

journal_title：Endocrinology

authors： Ismail F,Epstein S,Fallon MD,Thomas SB,Reinhardt TA

更新日期：1988-02-01 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：:Intracellular cargo transport relies on microtubules and motor proteins such as kinesins and dyneins. Currently we have ample knowledge of the mechanisms by which motor proteins propel themselves along the microtubules, but little is known about intracellular factors that regulate motor speed. Here we show that proadr...

journal_title：Endocrinology

authors： Larráyoz IM,Martínez A

更新日期：2012-04-01 00:00:00

abstract：:Administration of dehydroepiandrosterone (DHA) to immature female rats on day 27 for 3 days resulted in an increase in uterine weight within 6 h of injection and a surge of FSH, LH and prolactin occurred on day 30 resulting in premature ovulation. Increase in ovarian weight and vaginal patency also occurred on day 30....

journal_title：Endocrinology

authors： Knudsen JF,Mahesh VB

更新日期：1975-08-01 00:00:00

abstract：:The conceptus and endometrium secrete large amounts of prostaglandin E₂ (PGE₂) into the porcine uterine lumen during the periimplantation period. We hypothesized that PGE₂ acts on conceptus/trophoblast cells through auto- and paracrine mechanisms. Real-time RT-PCR analysis revealed that PGE₂ receptor (PTGER)2 mRNA was...

journal_title：Endocrinology

authors： Waclawik A,Kaczynski P,Jabbour HN

更新日期：2013-10-01 00:00:00

abstract：:Pharmacological amounts of 25(s),26-dihydroxyvitamin D3 were administered to normal, vitamin D-replete rats in order to assess its pharmacological activity. Treatment with 25(s),26-dihydroxyvitamin D3 (20 micrograms/day for 1 week) caused a marked and significant fall in the circulating concentration of 1,25-dihydroxy...

journal_title：Endocrinology

authors： Zerwekh JE,Harvey JA,Pak CY

更新日期：1987-11-01 00:00:00

abstract：:The regulation of cholecystokinin octapeptide (CCK-8) secretion was studied using a fetal cerebral cortical cell culture system. After 2-3 weeks in culture, the cells were utilized for short-term release experiments. CCK-8 was measured by RIA and its identity was confirmed by HPLC. Depolarization of the cells with K+ ...

journal_title：Endocrinology

authors： Abucham J,Reichlin S

更新日期：1991-12-01 00:00:00

abstract：:Prostacyclin (PGI2) (1-5 micrograms in 3 microliters 0.05 M Tris/HCl buffer, pH 7.5) and its stable metabolite, 6-oxo-PGF1 alpha, were microinjected into the third ventricle of ovariectomized rats, and plasma FSH, GH, PRL, and TSH levels were measured by RIA. Control animals received 3 microliters buffer. Injection of...

journal_title：Endocrinology

authors： Ottlecz A,Samson WK,McCann SM

更新日期：1984-02-01 00:00:00

abstract：:In previous studies it was shown that bovine GH (bGH) suppressed and glucagon stimulated the level of 24- and 30- to 34-kilodalton insulin-like growth factor-binding proteins (IGFBPs) in the media of cultured rat hepatocytes. In the present study we have evaluated the regulation of IGFBP-1 gene expression in primary r...

journal_title：Endocrinology

authors： Kachra Z,Yang CR,Murphy LJ,Posner BI

更新日期：1994-11-01 00:00:00

abstract：:The effects of FSH, hCG, and PRL on the activity of 20 alpha-hydroxysteroid dehydrogenase (20 alpha-SDH) of separate ovarian components of hypophysectomized, diethylstilbestrol-treated rats were studied. Enzyme activity was found to reside mainly in granulosa cells. FSH induced an increase in enzyme activity. A prepar...

journal_title：Endocrinology

authors： Eckstein B,Nimrod A

更新日期：1979-03-01 00:00:00

abstract：:PTH stimulates bone formation and increases hematopoietic stem cells through mechanisms as yet uncertain. The purpose of this study was to identify mechanisms by which PTH links actions on cells of hematopoietic origin with osteoblast-mediated bone formation. C57B6 mice (10 d) were nonlethally irradiated and then admi...

journal_title：Endocrinology

authors： Koh AJ,Novince CM,Li X,Wang T,Taichman RS,McCauley LK

更新日期：2011-12-01 00:00:00

abstract：:Flavonoids are functional constituents of many fruits and vegetables. Some flavonoids have antidiabetic properties because they improve altered glucose and oxidative metabolisms of diabetic states. Procyanidins are flavonoids with an oligomeric structure, and it has been shown that they can improve the pathological ox...

journal_title：Endocrinology

authors： Pinent M,Blay M,Bladé MC,Salvadó MJ,Arola L,Ardévol A

更新日期：2004-11-01 00:00:00

abstract：:In the present report, the action of leukemia inhibitory factor (LIF) on testicular steroid hormone formation was studied. For this purpose, the direct effects of LIF were evaluated on basal and human (h)CG-stimulated testosterone synthesis by cultured, purified Leydig cells isolated from porcine testes. LIF reduced (...

journal_title：Endocrinology

authors： Mauduit C,Goddard I,Besset V,Tabone E,Rey C,Gasnier F,Dacheux F,Benahmed M

更新日期：2001-06-01 00:00:00

abstract：:A study of the synthesis and migration of thyroglobulin has been carried out by the incubation of calf thyroid slices in the presence of [14C]leucine followed by the separation of intracellular compartments from the colloid by differential and density gradient centrifugation. The effect of inhibitors on these processe...

journal_title：Endocrinology

authors： Spiro MJ,Gorski KM

更新日期：1986-09-01 00:00:00

abstract：:A rat medullary thyroid carcinoma, which was previously shown to produce high levels of immunoreactive cholecystokinin (CCK), was used to establish a stable cell line. Transplantable tumors were subjected to four series of alternate in vitro and in vivo passages. Cells were prepared from the fourth series of tumors un...

journal_title：Endocrinology

authors： Haun RS,Beinfeld MC,Roos BA,Dixon JE

更新日期：1989-08-01 00:00:00

abstract：:The rat anterior pituitary expresses beta(2)-adrenoceptors (ARs) on somatotrophs, lactotrophs, and corticotrophs. The present study investigates whether beta(1)-ARs exist in the anterior pituitary, in which cell type(s) they are found, and whether they are regulated by glucocorticoids. As determined by quantitative RT...

journal_title：Endocrinology

authors： Janssens K,Krylyshkina O,Hersmus N,Vankelecom H,Denef C

更新日期：2008-05-01 00:00:00

abstract：:The effects of FFA on circulating LH and GH concentrations in ovariectomized ewe lambs were investigated. Lambs (n = 14) were weaned at 2.5 months, ovariectomized at 6.5 months, and used at 8.5 months of age. From weaning until day 0 of the experiment, lambs were fed to maintain body weights (23 kg). On day 0, serum F...

journal_title：Endocrinology

authors： Estienne MJ,Schillo KK,Hileman SM,Green MA,Hayes SH,Boling JA

更新日期：1990-04-01 00:00:00