abstract：:Glucocorticoid hormones allow individuals to rapidly adjust their physiology and behavior to meet the challenges of a variable environment. An individual's baseline concentration of glucocorticoids can reflect shifts in life history stage and resource demands while mediating a suite of physiological and behavioral cha...

journal_title：General and comparative endocrinology

authors： Schoenle LA,Schoepf I,Weinstein NM,Moore IT,Bonier F

更新日期：2018-01-15 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：:In many mammal species, androgen levels in males are elevated during periods of mating activity, often to facilitate aggressive behavior between males over access to fertile females. However, this pattern might be less obvious in species with a rather low male-male aggression rate, or in those that are not strictly se...

journal_title：General and comparative endocrinology

authors： Wolf TE,Schaebs FS,Bennett NC,Burroughs R,Ganswindt A

更新日期：2018-01-01 00:00:00

abstract：:The capacity for early life environmental stressors to induce programming effects on the endocrine stress response in fish is largely unknown. In this study we determined the effects of high environmental ammonia (HEA) exposure on the stress response in larval zebrafish, assessed the tolerance of embryonic and larval ...

journal_title：General and comparative endocrinology

authors： Williams TA,Bonham LA,Bernier NJ

更新日期：2017-12-01 00:00:00

abstract：:Cytochrome P450 17A1 (P450c17) is the key enzyme required for the production of androgenic sex steroids by converting progestogens to androgens. 5α-reductases are enzymes that convert testosterone (T) to dihydrotestosterone (DHT), which has a greater affinity for androgen receptors (AR) and stronger action than T. Our...

journal_title：General and comparative endocrinology

authors： Han W,Xie W,Zhang Y,Zhang F,Zhang H,Han Y,Yuan Z,Weng Q

更新日期：2017-12-01 00:00:00

abstract：:Sexual dimorphism in prenatal development is widespread among vertebrates, including birds. Its mechanism remains unclear, although it has been attributed to the effect of maternal steroid hormones. The aim of this study was to investigate how increased levels of steroid hormones in the eggs influence early embryonic ...

journal_title：General and comparative endocrinology

authors： Lutyk D,Tagirov M,Drobniak S,Rutkowska J

更新日期：2017-12-01 00:00:00

abstract：:Fishes have evolved physiological mechanisms to exhibit stress response, where hormonal signals interact with an array of ion transporters and regulate homeostasis. As major ion transport regulators in fish, cortisol and thyroid hormones have been shown to interact and fine-tune the stress response. Likewise, in fishe...

journal_title：General and comparative endocrinology

authors： Simi S,Peter VS,Peter MCS

更新日期：2017-09-15 00:00:00

abstract：:In the present study we sought to investigate interactions between hypothalamic nitric oxide (NO) and ghrelin signaling on food intake and energy substrate utilization as measured by the respiratory exchange ratio (RER). Guide cannulae were unilaterally implanted in either the arcuate (ArcN) or paraventricular (PVN) n...

journal_title：General and comparative endocrinology

authors： Abtahi S,Mirza A,Howell E,Currie PJ

更新日期：2017-09-01 00:00:00

abstract：:The present study was designed to investigate potential effects of arachidonic acid (ARA) on the reproductive physiology of female Atlantic cod (Gadus morhua L.). Two-year old Atlantic cod of both sexes were equally distributed into eight sea cages after completion of their first spawning in May 2005. Four experimenta...

journal_title：General and comparative endocrinology

authors： Norberg B,Kleppe L,Andersson E,Thorsen A,Rosenlund G,Hamre K

更新日期：2017-09-01 00:00:00

abstract：:Growth hormone (GH) has many actions in vertebrates, including the regulation of two disparate metabolic processes: growth promotion (anabolic) and the mobilization of stored lipids (catabolic). Our previous studies showed that GH stimulated IGF-1 production in hepatocytes from fed rainbow trout, but in cells from fas...

journal_title：General and comparative endocrinology

authors： Bergan-Roller HE,Ickstadt AT,Kittilson JD,Sheridan MA

更新日期：2017-07-01 00:00:00

abstract：:Plasma glucocorticoid (CORT) levels collected within 3min of capture are commonly believed to reflect pre-stressor, baseline CORT levels. Differences in these "baseline" values are often interpreted as reflecting differences in health, or the amount of social and environmental stress recently experienced by an individ...

journal_title：General and comparative endocrinology

authors： Small TW,Bebus SE,Bridge ES,Elderbrock EK,Ferguson SM,Jones BC,Schoech SJ

更新日期：2017-06-01 00:00:00

abstract：:Ecdysteroids play an essential role in the regulation of the molting processes of arthropods. Nuclear receptors of the spider Agelena silvatica that showed high homology with other arthropods especially in the functional domains were identified, two isoforms of ecdysone receptor (AsEcRA, AsEcRB), retinoid X receptor (...

journal_title：General and comparative endocrinology

authors： Honda Y,Ishiguro W,Ogihara MH,Kataoka H,Taylor D

更新日期：2017-06-01 00:00:00

abstract：:Thyroid hormones (THs) are crucial for brain development and maturation in all vertebrates. Especially during pre- and perinatal development, disruption of TH signaling leads to a multitude of neurological deficits. Many animal models provided insight in the role of THs in brain development, but specific data on how t...

journal_title：General and comparative endocrinology

authors： Raymaekers SR,Darras VM

更新日期：2017-06-01 00:00:00

abstract：:Elasmobranchs (sharks, skates, and rays) are a primarily carnivorous group of fish, consuming few carbohydrates. Further, they tend to exhibit delayed responses to glucose and insulin administration in vivo relative to mammals, leading to a presumption of glucose-intolerance. To investigate the glucoregulatory capabil...

journal_title：General and comparative endocrinology

authors： Deck CA,Gary Anderson W,Walsh PJ

更新日期：2017-06-01 00:00:00

abstract：:Hypothalamic kisspeptin plays a pivotal role in the regulation of the hypothalamic-pituitary-gonadal axis by stimulating gonadotropin-releasing hormone (GnRH) release into the portal circulation, with the subsequent release of gonadotropins. Kisspeptin and its receptor, the kisspeptin 1 receptor (Kiss1R), are also exp...

journal_title：General and comparative endocrinology

authors： Mijiddorj T,Kanasaki H,Sukhbaatar U,Oride A,Hara T,Kyo S

更新日期：2017-05-15 00:00:00

abstract：:Catechol-O-methyltransferase (COMT) is involved in the methylation and inactivation of endogenous and xenobiotic catechol compounds, and serves as a common biochemical link in the catecholamine and catecholestrogen metabolism. Studies on cloning, sequencing and function characterization comt gene in lower vertebrates ...

journal_title：General and comparative endocrinology

authors： Chaube R,Rawat A,Inbaraj RM,Bobe J,Guiguen Y,Fostier A,Joy KP

更新日期：2017-05-15 00:00:00

abstract：:Experimental data demonstrated the negative impact of maternal protein malnutrition (MPM) on rat prostate development, but the mechanism behind the impairment of prostate growth has not been well understood. Male Sprague Dawley rats, borned to dams fed a normal protein diet (CTR group, 17% protein diet), were compared...

journal_title：General and comparative endocrinology

authors： Colombelli KT,Santos SAA,Camargo ACL,Constantino FB,Barquilha CN,Rinaldi JC,Felisbino SL,Justulin LA

更新日期：2017-05-15 00:00:00

abstract：:The aim of the study was to verify the effect of various hormonal agents [human chorionic gonadotropin (hCG) and salmon gonadoliberine analogue (sGnRHa)] applied at different stages of maturity of the females [out-of-season (maturation stage I) and in-season spawning (maturation stages II and IV)] on the proximate com...

journal_title：General and comparative endocrinology

authors： Żarski D,Palińska-Żarska K,Łuczyńska J,Krejszeff S

更新日期：2017-05-01 00:00:00

abstract：:Experiments were carried out to test the efficiency of cryopreservation of whole testicular tissue in tench Tinca tinca and goldfish Carassius auratus and compare it to cryopreservation of isolated testicular cells. Additionally, effects of three cryoprotectants (dimethyl sulphoxyde - Me2SO, methanol - MeOH and ethyle...

journal_title：General and comparative endocrinology

authors： Marinović Z,Lujić J,Kása E,Bernáth G,Urbányi B,Horváth Á

更新日期：2017-05-01 00:00:00

abstract：:The maternal control directing the very first hours of life is of pivotal importance for ensuring proper development to the growing embryo. Thanks to the finely regulated inheritance of maternal factors including mRNAs and proteins produced during oogenesis and stored into the mature oocyte, the embryo is sustained th...

journal_title：General and comparative endocrinology

authors： Miccoli A,Dalla Valle L,Carnevali O

更新日期：2017-05-01 00:00:00

abstract：:The venoms of cone snails (genus Conus) are remarkably complex, consisting of hundreds of typically short, disulfide-rich peptides termed conotoxins. These peptides have diverse pharmacological targets, with injection of venom eliciting a range of physiological responses, including sedation, paralysis and sensory over...

journal_title：General and comparative endocrinology

authors： Robinson SD,Li Q,Bandyopadhyay PK,Gajewiak J,Yandell M,Papenfuss AT,Purcell AW,Norton RS,Safavi-Hemami H

更新日期：2017-04-01 00:00:00

abstract：:In fishes, maternal exposure to a stressor can influence offspring size and behavior. However, less is known about how maternal stress influences physiological processes in offspring, such as function of the hypothalamic-pituitary-interrenal (HPI) axis. We examined the impact of chronic maternal exposure to an acute c...

journal_title：General and comparative endocrinology

authors： Sopinka NM,Jeffrey JD,Burnett NJ,Patterson DA,Gilmour KM,Hinch SG

更新日期：2017-02-01 00:00:00

abstract：:A number of potential stressors are present in captive environments and it is critically important to identify them in order to improve health and welfare in ex situ animal populations. In this study, we investigated the adrenocortical activity of a colony of African penguins hosted in an immersive zoo in Italy, with ...

journal_title：General and comparative endocrinology

authors： Ozella L,Anfossi L,Di Nardo F,Pessani D

更新日期：2017-02-01 00:00:00

abstract：:Biologically active recombinant yellowtail kingfish follicle stimulating hormone (rytkFsh) was produced in yeast Pichia pastoris and its biological activity was demonstrated by both in-vitro and in-vivo bioassays. Incubation of ovarian and testicular fragments with the recombinant hormone stimulated E2 and 11-KT secre...

journal_title：General and comparative endocrinology

authors： Sanchís-Benlloch PJ,Nocillado J,Ladisa C,Aizen J,Miller A,Shpilman M,Levavi-Sivan B,Ventura T,Elizur A

更新日期：2017-01-15 00:00:00

abstract：:Prolactin-like protein (PRL-L; LOC417800) is a homolog of PRL in non-mammalian vertebrates and can act as a functional ligand of PRL receptor (PRLR). Despite its widespread expression in extrapituitary tissues, mechanisms of regulation of PRL-L in the chicken ovary remain unknown. In this study, we first examined PRL-...

journal_title：General and comparative endocrinology

authors： Hu S,Duggavathi R,Zadworny D

更新日期：2017-01-01 00:00:00

abstract：:In the coevolutionary dynamic of avian brood parasites and their hosts, maternal (or transgenerational) effects have rarely been investigated. We examined the potential role of elevated yolk testosterone in eggs of the principal brood parasite in North America, the brown-headed cowbird, and three of its frequent host ...

journal_title：General and comparative endocrinology

authors： Hahn DC,Wingfield JC,Fox DM,Walker BG,Thomley JE

更新日期：2017-01-01 00:00:00

abstract：:In the genetic sex determination of vertebrates, the gonadal sex depends on the combination of sex chromosomes that a zygote possesses. Despite the discovery of the sex-determining gene (SRY/Sry) in mammals in 1990s, the sex-determining gene in non-mammalian vertebrates remained an enigma for over a decade. In most ma...

journal_title：General and comparative endocrinology

authors： Matsuda M,Sakaizumi M

更新日期：2016-12-01 00:00:00

abstract：:Orexin A (OXA), a hypothalamic neuropeptide, and its receptor (OX1R) are primarily expressed in lateral hypothalamus and are involved in the control of various biological functions. Expressions of OXA and OX1R have also been reported in peripheral organs like gastrointestinal and genital tracts. In the present study, ...

journal_title：General and comparative endocrinology

authors： Joshi D,Singh SK

更新日期：2016-12-01 00:00:00

abstract：:Four genomes and two transcriptomes from six Chelicerate species were analyzed for the presence of neuropeptide and neurohormone precursors and their GPCRs. The genome from the spider Stegodyphus mimosarum yielded 87 neuropeptide precursors and 101 neuropeptide GPCRs. High neuropeptide transcripts were also found in t...

journal_title：General and comparative endocrinology

authors： Veenstra JA

更新日期：2016-11-09 00:00:00

abstract：:Chicken growth hormone secretagogue receptor (GHSR) is a receptor for ghrelin (GHRL), a peptide hormone produced by chicken proventriculus, which stimulates growth hormone (GH) release and food intake. The purpose of this study was to search for single nucleotide polymorphisms (SNPs) in exon 2 of GHSR gene and to anal...

journal_title：General and comparative endocrinology

authors： El-Magd MA,Saleh AA,Abdel-Hamid TM,Saleh RM,Afifi MA

更新日期：2016-10-01 00:00:00

abstract：OBJECTIVES:We previously found niacin receptor GPR109A was expressed in murine islet beta-cells, and signaling through GPR109A inhibited glucose stimulated insulin secretion (GSIS). However, the expression of GPR109A in human islets and its functional relevance is still not known. METHODS:The expression of GPR109A was...

journal_title：General and comparative endocrinology

authors： Wang N,Guo DY,Tian X,Lin HP,Li YP,Chen SJ,Fu YC,Xu WC,Wei CJ

更新日期：2016-10-01 00:00:00

abstract：:Flatfishes with more body height after metamorphosis should be better adapted to a benthic lifestyle. In this study, we quantified the changes in body height during metamorphosis in two flatfish species, Paralichthys olivaceus and Platichthys stellatus. The specific pattern of cell proliferation along the dorsal and v...

journal_title：General and comparative endocrinology

authors： Xu J,Ke Z,Xia J,He F,Bao B

更新日期：2016-09-15 00:00:00

abstract：:Carcinus maenas is widely recognized as one of the world's most successful marine invasive species; its success as an invader is due largely to its ability to thrive under varied environmental conditions. The physiological/behavioral control systems that allow C. maenas to adapt to new environments are undoubtedly und...

journal_title：General and comparative endocrinology

authors： Christie AE

更新日期：2016-09-01 00:00:00

abstract：:In dairy cows, heat stress depresses appetite, leading to decreased food intake, a negative energy balance, and modifies ghrelin levels. Ghrelin is a gut-brain peptide with two major forms: acylated, with an O-n-octanoylated serine in position 3, and nonacylated. To date, the effect of heat stress and estrous cycle on...

journal_title：General and comparative endocrinology

authors： Honig H,Ofer L,Elbaz M,Kaim M,Shinder D,Gershon E

更新日期：2016-09-01 00:00:00

abstract：:The hormone leptin has been identified in all vertebrate classes, but its physiological roles in non-mammalian vertebrates are not well defined. To elucidate leptin regulation in energy homeostasis in a teleost fish species, this study compares hypothalamic and pituitary leptin signaling systems in energetically diver...

journal_title：General and comparative endocrinology

authors： Gong N,Johansson M,Björnsson BT

更新日期：2016-09-01 00:00:00

abstract：:Arsenic contaminates water surface and groundwater worldwide. Several studies have suggested that arsenic acts as an endocrine disruptor in mammalian and non-mammalian species, although its chronic effect during development remains largely unknown. To address this question, life cycle exposures to 0, 0.3 and 0.8ppm of...

journal_title：General and comparative endocrinology

authors： Gibson LA,Koch I,Reimer KJ,Cullen WR,Langlois VS

更新日期：2016-08-01 00:00:00

abstract：:Acute stress in vertebrates generally stimulates the hypothalamo-pituitary-adrenal axis and is often associated with multiple metabolic changes, such as increased gluconeogenesis, and with behavioral alterations. Little information is available, especially in free-ranging organisms, on the duration of these reversible...

journal_title：General and comparative endocrinology

authors： Deviche P,Bittner S,Davies S,Valle S,Gao S,Carpentier E

更新日期：2016-08-01 00:00:00

abstract：:We prepared monoclonal antibodies (mAbs) against a recombinant tethered follicle-stimulating hormone (rec-FSH) from Japanese eel Anguilla japonica that was produced in Escherichia coli. Positive hybridomas (clones eFA-C5, eFA-C10, eFA-C11, eFA-C12, eFA-C13, and eFB-C14) were selected by using the eel FSH antigen in EL...

journal_title：General and comparative endocrinology

authors： Kim DJ,Park CW,Kim DW,Park HK,Byambaragchaa M,Lee NS,Hong SM,Seo MY,Kang MH,Min KS

更新日期：2016-07-01 00:00:00

abstract：:Measuring hair cortisol has attracted interest as a long term parameter for chronic stress evaluation. However, some studies support the hypothesis that locally produced cortisol, originating from the hair follicle or skin cells, affects concentrations in the hair. In an animal model the influence of different treatme...

journal_title：General and comparative endocrinology

authors： Salaberger T,Millard M,Makarem SE,Möstl E,Grünberger V,Krametter-Frötscher R,Wittek T,Palme R

更新日期：2016-07-01 00:00:00

abstract：:The growth hormone (Gh)/insulin-like growth-factor (Igf) system plays a central role in the regulation of growth in fishes. However, the roles of Igf binding proteins (Igfbps) in coordinating responses to food availability are unresolved, especially in anadromous fishes preparing for seaward migration. We assayed plas...

journal_title：General and comparative endocrinology

authors： Breves JP,Phipps-Costin SK,Fujimoto CK,Einarsdottir IE,Regish AM,Björnsson BT,McCormick SD

更新日期：2016-07-01 00:00:00