Characterisation of melatonin binding sites in the eye of the Japanese quail (Coturnix japonica).

abstract：:An investigation into vitamin D-like molecules has been performed on whole extracts of the terrestrial amphipod Orchestia cavimana, using a sensitive nonequilibrium assay employing 1,25-(OH)2 D receptor from calf thymus. Relatively large amounts of these secosteroid-like molecules were observed and they varied in conc...

journal_title：General and comparative endocrinology

authors： Meyran JC,Chapuy MC,Arnaud S,Sellem E,Graf F

更新日期：1991-10-01 00:00:00

abstract：:1,25-dihydroxyvitamin D3 (1,25(OH)2D3), the hormonally active metabolite of vitamin D3 interacts with its nuclear/cytosolic receptor to induce biological responses in target tissues. Naked mole rats appear to be naturally deficient in vitamin D. The questions arise whether these animals possess the 1,25(OH)2D3 recepto...

journal_title：General and comparative endocrinology

authors： Sergeev IN,Buffenstein R,Pettifor JM

更新日期：1993-06-01 00:00:00

abstract：:Dopamine (DA) was infused into the third ventricle of anesthetized laying turkey hens at various concentrations to determine its effect on both basal prolactin (PRL) levels and ongoing electrically induced PRL secretion. The infusion of DA at rates of 1.0 or 10.0 nmol/min resulted in dose dependent increases in plasma...

journal_title：General and comparative endocrinology

authors： Youngren OM,Pitts GR,Phillips RE,el Halawani ME

更新日期：1995-04-01 00:00:00

abstract：:Chemical identification of neurohypophysial hormones from about 80 vertebrate species reveals that two evolutionary lineages can be traced in bony vertebrates, a vasopressin-like hormone line and an oxytocin-like hormone line, which were derived from the duplication of an ancestral gene that may have been present in a...

journal_title：General and comparative endocrinology

authors： Acher R

更新日期：1996-05-01 00:00:00

abstract：:The effects of fasting and feeding on the brain expression of orexin (OX), tyrosine hydroxylase (TH), peptide Y (PY) and cholecystokinin (CCK) were examined in the blind cavefish Astyanax fasciatus mexicanus. A 10-days fasting period induced increases in both OX and TH brain mRNA expression but had no effect on PYY an...

journal_title：General and comparative endocrinology

authors： Wall A,Volkoff H

更新日期：2013-03-01 00:00:00

abstract：:The effect of aldosterone and corticosterone on T3 binding to the nuclear fraction of the tail fin of bullfrog tadpoles was investigated in vitro. Both corticoids (10(-7) - 10(-5) M) added to the incubation medium increased T3 binding in a dose-dependent manner. The aldosterone-induced increase in T3-binding was block...

journal_title：General and comparative endocrinology

authors： Suzuki MR,Kikuyama S

更新日期：1983-11-01 00:00:00

abstract：:The objective of this review was to summarize and discuss the effects of Polybrominated diphenyl ethers (PBDEs) on thyroid and reproduction systems in fish. We reviewed the evidences and mechanisms for PBDEs-induced thyroid and reproduction disruption, as well as the cross-talk between the two systems in fish. In thyr...

journal_title：General and comparative endocrinology

authors： Yu L,Han Z,Liu C

更新日期：2015-08-01 00:00:00

abstract：:Twelve male edible dormice, captured in the autumn of 1979, were studied for 2 years under natural lighting in an animal enclosure with permanently open windows, at Montpellier, in Southern France (latitude 43 degrees 50' N). Ambient temperature fluctuated annually between +4 and 27 degrees, and the photoperiod betwee...

journal_title：General and comparative endocrinology

authors： Jallageas M,Assenmacher I

更新日期：1983-06-01 00:00:00

abstract：:Although neuropeptide Y (NPY) has been known to influence the release of luteinizing hormone (LH) and growth hormone (GH) from the pituitary gland of teleosts, the NPY receptor subtypes involved in the regulatory processes have not been fully defined. An attempt has been made to study the involvement of NPY Y1 recepto...

journal_title：General and comparative endocrinology

authors： Mazumdar M,Lal B,Sakharkar AJ,Deshmukh M,Singru PS,Subhedar N

更新日期：2006-11-01 00:00:00

abstract：:High plasma levels of testosterone at the beginning of the breeding season adjust male physiology for mating and promote territorial behavior in birds. Conversely intra-sexual competition may elicit a temporary increase in circulating testosterone. Male black redstarts (Phoenicurus ochruros) from migratory populations...

journal_title：General and comparative endocrinology

authors： Villavicencio CP,Blas J,Goymann W

更新日期：2014-09-01 00:00:00

abstract：:The cortisol stress response in juvenile coho salmon, Oncorhynchus kisutch, considered as the difference between resting and peak poststress cortisol levels, increased from 80 ng/ml in March to 166 ng/ml in July, the period when smoltification normally occurs. Resting plasma cortisol levels also continually increased ...

journal_title：General and comparative endocrinology

authors： Barton BA,Schreck CB,Ewing RD,Hemmingsen AR,Patiño R

更新日期：1985-09-01 00:00:00

abstract：:Interrenal activity in relation to sexual maturity in male rainbow trout, and the effects of in vivo treatment with 11-ketotestosterone (11-KT) were investigated. Silastic pellets containing either 11-KT or no steroid were implanted in maturing male and immature male and female rainbow trout for a total of 11 weeks. T...

journal_title：General and comparative endocrinology

authors： Young G,Thorarensen H,Davie PS

更新日期：1996-09-01 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：:Development patterns in birds range from precocial species, which hatch chicks largely capable of independent existence, to altricial species, chicks of which are highly dependent on their parents for extended periods. Previous work indicates precocial chicks have a robust corticosterone response from hatching whereas...

journal_title：General and comparative endocrinology

authors： Adams NJ,Cockrem JF,Candy EJ,Taylor GA

更新日期：2008-05-15 00:00:00

abstract：:Birds respond to environmental changes by modulating their levels of plasma corticosterone, a stress hormone produced by the adrenal glands. Baseline levels of corticosterone and the magnitude of adrenocortical response to acute stress are known to vary seasonally. Photoperiod is one of several potential factors which...

journal_title：General and comparative endocrinology

authors： Pravosudov VV,Kitaysky AS,Saldanha CJ,Wingfield JC,Clayton NS

更新日期：2002-04-01 00:00:00

abstract：:A significant reduction in stress-induced plasma cortisol levels is apparent in mature male rainbow trout compared to immature fish of both sexes and of the same age and strain. Mean plasma cortisol levels in groups of immature fish subjected to a standard 1-hr confinement stress were consistently higher (range 93.9 +...

journal_title：General and comparative endocrinology

authors： Pottinger TG,Balm PH,Pickering AD

更新日期：1995-06-01 00:00:00

abstract：:Seabird productivity is shaped by marine resource availability. We examined the link between seabird productivity and an indirect measure of food availability: baseline plasma corticosterone. We predicted low productivity would coincide with elevated baseline corticosterone levels in Black-legged Kittiwakes (Rissa tri...

journal_title：General and comparative endocrinology

authors： Buck CL,O'Reilly KM,Kildaw SD

更新日期：2007-02-01 00:00:00

abstract：:The avian neurohypophyseal hormone arginine vasotocin (AVT) is known to be involved in the regulation of adrenocorticotropin (ACTH) release by interacting with the VT2 receptor (VT2R), which is homologous to the mammalian vasopressin V1b receptor (V1bR). To study the role of glucocorticoid in the expression and regula...

journal_title：General and comparative endocrinology

authors： Sharma D,Cornett LE,Chaturvedi CM

更新日期：2009-04-01 00:00:00

abstract：:Big dynorphin (prodynorphin 209-240), dynorphin A (prodynorphin 209-225), dynorphin B (prodynorphin 228-240), beta-endorphin (beta-lipotrophin 61-90), or Met-enkephalin, each infused into the third ventricle, were tested for their effect on PRL release in the anesthetized turkey hen. Laying hens that received big dyno...

journal_title：General and comparative endocrinology

authors： Youngren OM,Silsby JL,Phillips RE,el Halawani ME

更新日期：1993-08-01 00:00:00

abstract：:A conglomerate of 8-12 neurons in the medulla externa of the crayfish eyestalk was explored in their reaction to a polyclonal antibody against the tyrosinated octapeptide Red Pigment Concentrating Hormone (Tyr-RPCH). These are large neurons with diameters within a range of 33-43 microns and they were all positively st...

journal_title：General and comparative endocrinology

authors： Preciado M,Tsutsumi V,Aréchiga H

更新日期：1994-09-01 00:00:00

abstract：:Arginine vasotocin (AVT) and isotocin (IT) are fish nonapeptides synthesized in separate hypothalamic neurons from where they are transported to the neurohypophysis for storage and release into circulation. AVT is known to modulate aggression, courtship and parental care or social communication in many species, includ...

journal_title：General and comparative endocrinology

authors： Kleszczyńska A,Sokołowska E,Kulczykowska E

更新日期：2012-01-15 00:00:00

abstract：:Many insulin-like peptides (ILPs) have been identified in insects, yet only a few were isolated in their native form for structural and functional studies. Antiserum produced to ILP3 in Aedes aegypti was used in a radioimmunoassay to monitor the purification of an ILP from heads of adult An. stephensi and recognized t...

journal_title：General and comparative endocrinology

authors： Nuss AB,Brown MR

更新日期：2018-03-01 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

abstract：:Regression of the müllerian ducts in mammals and birds is caused by the testicular hormone, müllerian inhibiting substance (MIS), which is produced for an extended period of time after testicular differentiation. Because it is present long after the ducts regress, it has been proposed to have additional effects other ...

journal_title：General and comparative endocrinology

authors： Austin HB

更新日期：1994-10-01 00:00:00

abstract：:The serotonin system has been implicated in the modulation of endocrine and behavioral components of reproduction. In this study, we examined endogenous hypothalamic indolamines during sexual differentiation and long-term effects of exogenous steroids during this time. In Experiment 1, Japanese quail were studied duri...

journal_title：General and comparative endocrinology

authors： Abdelnabi MA,Ottinger MA

更新日期：2003-01-01 00:00:00

abstract：:The pituitary is a central organ of the neuro-endocrine system in fish that plays critical roles in various physiological processes, including stress response and behavior. Although it is known that pituitary hormones can have a direct or indirect influence stimulating or suppressing the immune responses, whether ther...

journal_title：General and comparative endocrinology

authors： Liu X,Khansari AR,Tort L

更新日期：2019-05-01 00:00:00

abstract：:Kisspeptin is a potent regulator of the hypothalamo-pituitary-gonadal axis. The activation of several vernal and pubertal behaviors involves the action of locally synthesized estradiol by hypothalamic aromatase-expressing neurons. Little is known about kisspeptin in non-mammalian systems, and its interaction with arom...

journal_title：General and comparative endocrinology

authors： Saldanha CJ,Walters BJ,Fraley GS

更新日期：2010-05-01 00:00:00

abstract：:Myostatin (GDF-8) inhibits the activation, proliferation, and differentiation of myogenic satellite cells. The relative importance of this growth factor is demonstrated in myostatin-null mice and cattle possessing defective myostatin genes. These defects result in greatly enhanced musculature. In the present study, th...

journal_title：General and comparative endocrinology

authors： McFarland DC,Velleman SG,Pesall JE,Liu C

更新日期：2007-05-01 00:00:00

abstract：:The presence of a robust estrogen (E2) response system throughout heart and blood vessel tissues of vertebrates, including humans, has led to the speculation that this ubiquitous hormone may play a prominent role in the health and maintenance of the adult cardiovascular system (CVS). We previously established an embry...

journal_title：General and comparative endocrinology

authors： Allgood OE Jr,Hamad A,Fox J,Defrank A,Gilley R,Dawson F,Sykes B,Underwood TJ,Naylor RC,Briggs AA,Lassiter CS,Bell WE,Turner JE

更新日期：2013-08-01 00:00:00

abstract：:We investigated the development of thyroid function during the transition to endothermy in red-winged blackbirds (Agelaius phoeniceus). Thermoregulatory capabilities of blackbirds improve markedly over their relatively short nestling period (10-12 days), with the most striking improvements occurring between days 6 and...

journal_title：General and comparative endocrinology

authors： Olson JM,McNabb FM,Jablonski MS,Ferris DV

更新日期：1999-11-01 00:00:00