Dopaminergic and enkephalinergic involvement in the regulation of blood glucose in the red swamp crayfish, Procambarus clarkii.

abstract：:Retinoid X receptors (RXRs) are members of the nuclear receptor superfamily and mediate development, reproduction, homeostasis and cell differentiation processes in vertebrates. In this study, full-length cDNA sequences of five rxr subtypes from yellow catfish Pelteobagrus fulvidraco were cloned. Their mRNA expression...

journal_title：General and comparative endocrinology

authors： Pan YX,Luo Z,Wu K,Zhang LH,Xu YH,Chen QL

更新日期：2016-01-01 00:00:00

abstract：:Glucagon and peptide of the neuropeptide Y (NPY) family immunoreactivities were studied in the gut of sea bass (Dicentrarchus labrax) using antisera against bovine/porcine glucagon, porcine glucagon, glicentin (10-30), bovine pancreatic polypeptide (PP), peptide tyrosine tyrosine (PYY), salmon PYY (sPYY), and NPY. Glu...

journal_title：General and comparative endocrinology

authors： Gómez-visus I,García-Hernández MP,Lozano MT,Agulleiro B

更新日期：1998-10-01 00:00:00

abstract：:We studied the in vitro effects of JH III and ecdysterone on RNA synthesis and secretory activities of the left colleterial gland (LCG) in mature females of Periplaneta americana during the reproductive cycle. We found that RNA synthesis is a cyclic and highly dynamic process. The major increases in poly(A)- RNA synth...

journal_title：General and comparative endocrinology

authors： Iris FJ,Sin FY

更新日期：1988-07-01 00:00:00

abstract：:When pigeons were injected with an extract of chicken hypothalamus, the increase in weight of the crop sac showed that prolactin secretion was stimulated. Crop sac weight was no higher after 16 days of injection than it was after 8 days. Pituitary gland content of prolactin and growth hormone was elevated at 8 days, b...

journal_title：General and comparative endocrinology

authors： Hall TR,Chadwick A

更新日期：1984-08-01 00:00:00

abstract：:Unlike mammals, the goldfish is unique in having dopamine (DA) D1 receptors in the anterior pituitary. In this species, DA stimulates growth hormone (GH) release via D1 receptors coupled to the cAMP-dependent pathway. To further examine the postreceptor mechanisms of this novel pituitary DA D1 system, the role of extr...

journal_title：General and comparative endocrinology

authors： Wong AO,Van Goor F,Chang JP

更新日期：1994-06-01 00:00:00

abstract：:Ghrelin is a recently discovered hormone which has profound effects on food intake and lipogenesis in mammals. In all mammals studied thus far, plasma ghrelin concentrations are increased before a meal and decrease immediately following a meal; ghrelin levels increase with fasting. The golden-mantled ground squirrel S...

journal_title：General and comparative endocrinology

authors： Healy JE,Ostrom CE,Wilkerson GK,Florant GL

更新日期：2010-04-01 00:00:00

abstract：:Reptilia is the only vertebrate class in which cDNA for the gonadotropin beta subunit precursor molecule has not been cloned. We have isolated the full-length cDNA clone encoding the LH beta subunit precursor molecule and a partial cDNA clone encoding the FSH beta subunit precursor molecule from a pituitary cDNA libra...

journal_title：General and comparative endocrinology

authors： Aizawa Y,Ishii S

更新日期：2003-07-01 00:00:00

abstract：:In mammals, a well-documented inverse relationship exists between oral salt intake and plasma renin activity (PRA). We carried out this study to determine if a similar relationship exists in the freshwater turtle Pseudemys scripta. Three groups of turtles (N = 8 for each group) were fed different amounts of salt disso...

journal_title：General and comparative endocrinology

authors： Stephens GA,Hauben D

更新日期：1989-12-01 00:00:00

abstract：:Studies with 6-n-propyl-2-thiouracil (PTU) in laboratory rodents have shown that transient neonatal hypothyroidism leads to increased Sertoli cell (SC) number, testis size and sperm production. However, scarce and inconclusive data are available for farm animals. In the present study, Piau pigs received PTU in a gel c...

journal_title：General and comparative endocrinology

authors： Lara NLM,Silva VA Jr,Chiarini-Garcia H,Garcia SK,Debeljuk L,Hess RA,França LR

更新日期：2020-12-01 00:00:00

abstract：:Plasma levels of testosterone and corticosterone were measured in free-living male bush warblers captured on their breeding ground at different times of the breeding season. Their territoriality was also estimated from their singing response to song playbacks. The pattern of change detected in the levels of plasma tes...

journal_title：General and comparative endocrinology

authors： Wada M,Shimizu T,Kobayashi S,Yatani A,Sandaiji Y,Ishikawa T,Takemure E

更新日期：1999-12-01 00:00:00

abstract：:Immunochemical investigations, using dot immunobinding assay (DIA) and enzyme-linked immunosorbent assay (ELISA), and immunocytochemical studies reveal the following new information about crustacean vitellogenesis-inhibiting hormone (VIH): (1) The structure of VIH is sufficiently different from that of the other sinus...

journal_title：General and comparative endocrinology

authors： Meusy JJ,Martin G,Soyez D,van Deijnen JE,Gallo JM

更新日期：1987-09-01 00:00:00

abstract：:Uptake of L-thyroxine (T4) by isolated trout hepatocytes was characterized after 1-min incubation of cells in a Hanks' balanced salts medium containing glucose and [125I]T4. Centrifugation through silicone oil and glycine buffer (pH 10.5) was used to separate cells from the medium and minimize extracellular binding of...

journal_title：General and comparative endocrinology

authors： Riley WW Jr,Eales JG

更新日期：1993-04-01 00:00:00

abstract：:The administration of arginine vasotocin (AVT) to gravid snapping turtles with steroidogenically active corpora lutea and high plasma progesterone concentration (1480 +/- 155 pg/ml) did not trigger oviposition, whereas 12 days after ovulation when luteolysis occurred and plasma progesterone concentration was low (570 ...

journal_title：General and comparative endocrinology

authors： Mahmoud IY,Cyrus RV,McAsey ME,Cady C,Woller MJ

更新日期：1988-01-01 00:00:00

abstract：:Potamopyrgus antipodarum is a promising test organism that is often used in ecotoxicology, both in laboratory and field exposures. As no data are available on the physiological variation range of its life-traits and the biomarkers it uses, we studied the variation of fecundity, steroid levels and energy reserves over ...

journal_title：General and comparative endocrinology

authors： Gust M,Mouthon J,Queau H,Dussart C,Buronfosse T,Garric J

更新日期：2011-06-01 00:00:00

abstract：:This study investigated the role of gonadotrophin and steroids in the induction of in vitro oocyte maturation in dab (Limanda limanda) and plaice (Pleuronectes platessa), two marine flatfish (Pleuronectiformes) in which the oocytes mature and ovulate in groups (or batches). Clusters of folliculated oocytes were incuba...

journal_title：General and comparative endocrinology

authors： Canario AV,Scott AP

更新日期：1990-02-01 00:00:00

abstract：:Low birth weight is correlated with low adiposity at birth, a phenotype that influences neonatal survival and later adiposity. A better understanding of events affecting the fetal adipose tissue development and its functionality around birth is thus needed. This study was undertaken to examine the impact of spontaneou...

journal_title：General and comparative endocrinology

authors： Gondret F,Père MC,Tacher S,Daré S,Trefeu C,Le Huërou-Luron I,Louveau I

更新日期：2013-12-01 00:00:00

abstract：:Recent studies have revealed nesfatin-1 as a hypothalamic neuropeptide, regulating food intake, energy expenditure and reproduction primarily by acting on the hypothalamic-pituitary-gonadal axis. Nesfatin-1 is also localized in several peripheral tissues including testes. However, functional significance of nesfatin-1...

journal_title：General and comparative endocrinology

authors： Ranjan A,Choubey M,Yada T,Krishna A

更新日期：2019-01-15 00:00:00

abstract：:Primary cultured gill epithelia from goldfish and rainbow trout were used to investigate a role for cortisol in the regulation of paracellular permeability and tight junction (TJ) protein transcript abundance in representative stenohaline versus euryhaline freshwater (FW) fish gills. Glucocorticoid and mineralocortico...

journal_title：General and comparative endocrinology

authors： Chasiotis H,Kelly SP

更新日期：2011-07-01 00:00:00

abstract：:Plasma concentrations and stored levels of the neuroendocrine peptides arginine vasotocin (AVT) and urotensin II (UII) were measured in the euryhaline flounder (Platichthys flesus) following the acute hypo-osmotic challenge of direct seawater (SW) to fresh water (FW) transfer. Hormone measures, plasma osmolality, and ...

journal_title：General and comparative endocrinology

authors： Bond H,Winter MJ,Warne JM,McCrohan CR,Balment RJ

更新日期：2002-01-01 00:00:00

abstract：:Endocrinological research on wild animals inhabiting remote areas has been hampered by the need to store plasma samples at subzero temperatures. In an attempt to remedy this logistical issue, we here investigate the use of ethanol as an alternative to freezing for the preservation of steroid and indoleamine hormones i...

journal_title：General and comparative endocrinology

authors： Goymann W,Schwabl I,Trappschuh M,Hau M

更新日期：2007-01-15 00:00:00

abstract：:cDNA encoding the beta type of thyroid hormone receptor (THR) was cloned from a lambda gt10 library prepared from the whole bodies of metamorphosing flounder (Paralichthys olivaceus). The deduced amino acid sequence of the flounder THR beta (fTHR beta 1) showed higher homologies to the known THR beta s of other verteb...

journal_title：General and comparative endocrinology

authors： Yamano K,Inui Y

更新日期：1995-08-01 00:00:00

abstract：:Pinealectomized and intact chicks raised under cyclic (14L:10D) and noncyclic (OL;24L) conditions of environmental lighting were sampled 60 hr and 6 weeks after pinealectomy to evaluate the effects of pineal ablation on plasma and ocular melatonin concentrations. Little or no immunoreactive melatonin was present in pl...

journal_title：General and comparative endocrinology

authors： Osol G,Schwartz B,Foss DC

更新日期：1985-06-01 00:00:00

abstract：:Abnormalities in calcium (Ca(2+)) homeostasis are reported in horses with several pathological conditions; however, there is little information on Ca(2+) regulation in horses. The objectives of the present study were to determine the Ca(2+) set-point in healthy horses, to determine whether the Ca(2+)/parathyroid hormo...

journal_title：General and comparative endocrinology

authors： Toribio RE,Kohn CW,Sams RA,Capen CC,Rosol TJ

更新日期：2003-02-15 00:00:00

abstract：:The endocrine pancreas of the lizard Podarcis hispanica is described using light and electron microscopy. The endocrine pancreas of this reptile is located throughout the spleen side of the organ and consists of islet-like structures, small groups of two to five cells, and single scattered endocrine cells. The endocri...

journal_title：General and comparative endocrinology

authors： López J,Echevarría M,Vázquez JJ

更新日期：1988-08-01 00:00:00

abstract：:Two forms of immunoreactive gonadotropin-releasing hormone (GnRH) were extracted from brain-pituitary tissues of Thai catfish, Clarias macrocephalus and C. batrachus. The peptides were detected using high performance liquid chromatography (HPLC) and radioimmunoassay (RIA). In both the HPLC systems, catfish GnRH-I elut...

journal_title：General and comparative endocrinology

authors： Ngamvongchon S,Sherwood NM,Warby CM,Rivier JE

更新日期：1992-08-01 00:00:00

abstract：:We examined the mechanism of amiloride-sensitive Na(+) channels (ENaC) activated by fANP in epithelial cells of frog urinary bladder by using a cell-attached patch-clamp technique. ENaC activities in the epithelial cells were significantly increased following administration of both 10(-9)M fANP and 10(-5)M 8-Br-cGMP. ...

journal_title：General and comparative endocrinology

authors： Yamada T,Matsuda K,Uchiyama M

更新日期：2007-06-01 00:00:00

abstract：:Determination of serum progesterone concentrations over a period of 2 years in female camels during various reproductive stages (estrus, pregnant, nonpregnant, and lactating) suggests that the progesterone levels exceeding 1 ng/ml are reached only if mating is fertile. A cycling camel does not have a luteal phase and ...

journal_title：General and comparative endocrinology

authors： Elias E,Bedrak E,Yagil R

更新日期：1984-02-01 00:00:00

abstract：:Differential transfer of maternal testosterone (T) into egg yolk provides a means of adjusting an offspring's phenotype to ambient environmental conditions. While the environmental and genetic driven variability in yolk T levels is widely described, the underlying mechanisms are poorly understood. Here, we investigate...

journal_title：General and comparative endocrinology

authors： Okuliarova M,Meddle SL,Zeman M

更新日期：2018-01-15 00:00:00

abstract：:The discovery of novel members of the CRF neuropeptide family, urocortin 1 (Ucn1), urocortin 2 and 3 has provided important insights into stress adaptation pathways, and predicted that stress adaptation involves more systems than the HPA-axis alone. This mini-review aims to summarize our recent data and research by ot...

journal_title：General and comparative endocrinology

authors： Kozicz T

更新日期：2007-08-01 00:00:00

abstract：:Gonadotropin-inhibitory hormone (GnIH) is an inhibitor of the hypothalamic-pituitary-gonadal (HPG) axis. GnIH is also called RFamide-related peptide (RFRP) as GnIH peptides have a characteristic C-terminal LPXRFiamide (X = L or Q) sequence. GnIH is thought to be the mediator of stress by negatively regulating the HPG ...

journal_title：General and comparative endocrinology

authors： Ubuka T,Parhar IS,Tsutsui K

更新日期：2018-09-01 00:00:00