abstract：:Wrasse species exhibit a definite daily rhythm in locomotor activity and bury themselves in the sand at the bottom of the ocean at night. It remains unclear how their behavior in locomotor activity is endogenously regulated. The aim of the present study was to clarify the involvement of melatonin and clock genes (Per1...

journal_title：General and comparative endocrinology

authors： Hur SP,Takeuchi Y,Itoh H,Uchimura M,Takahashi K,Kang HC,Lee YD,Kim SJ,Takemura A

更新日期：2012-05-15 00:00:00

abstract：:Quantification of glucocorticoid metabolites in feces has been shown to be a powerful tool in evaluating well-being in vertebrates. Little is known however about the hypothalamic-pituitary-adrenal axis response to stressors, and consequent glucocorticoid excretion, in reptiles. In a longitudinal study, fecal corticost...

journal_title：General and comparative endocrinology

authors： Kalliokoski O,Timm JA,Ibsen IB,Hau J,Frederiksen AM,Bertelsen MF

更新日期：2012-05-15 00:00:00

abstract：:To examine the relative growth, endocrine, and gene expression effects of growth hormone (GH) transgenesis vs. GH protein treatment, wild-type non-transgenic and GH transgenic coho salmon were treated with a sustained-release formulation of recombinant bovine GH (bGH; Posilac). Fish size, specific growth rate (SGR), a...

journal_title：General and comparative endocrinology

authors： Raven PA,Sakhrani D,Beckman B,Neregård L,Sundström LF,Björnsson BT,Devlin RH

更新日期：2012-05-15 00:00:00

abstract：:The larval ring gland and adult corpus allatum (CA) of Drosophila melanogaster produce at least three sesquiterpenoid products: methyl farnesoate (MF), juvenile hormone III (JHIII), and JHIII bisepoxide (JHB(3)). Our understanding of neuropeptide regulation of sesquiterpenoid biosynthesis in D. melanogaster has been h...

journal_title：General and comparative endocrinology

authors： Wang C,Zhang J,Tobe SS,Bendena WG

更新日期：2012-05-01 00:00:00

abstract：:Seasonally-breeding amphibians have served as excellent animal models to investigate the biosynthesis and biological actions of neurosteroids. Previous studies have demonstrated that the brain of amphibians possesses key steroidogenic enzymes and produces pregnenolone, a precursor of steroid hormones, and other variou...

journal_title：General and comparative endocrinology

authors： Tsutsui K,Haraguchi S,Matsunaga M,Koyama T,Do Rego JL,Vaudry H

更新日期：2012-05-01 00:00:00

abstract：:Ghrelin (GRLN), cocaine and amphetamine regulated transcript (CART), neuropeptide Y (NPY), and cholecystokinin (CCK) are neuropeptides involved in the regulation of appetite and feeding in vertebrates. We examined pre- and postprandial changes in the expression of plasma GHRL and mRNAs encoding GRLN, CART, NPY, and CC...

journal_title：General and comparative endocrinology

authors： Peterson BC,Waldbieser GC,Riley LG Jr,Upton KR,Kobayashi Y,Small BC

更新日期：2012-04-01 00:00:00

abstract：:The purpose of this study was to investigate the physiological maturation-inducing steroid (MIS) in the marine protandrous yellowfin porgy (Acanthopagrus latus). Female fish were injected with 2 doses of LHRH analog (10 and 40 μg per kg). Ovarian tissue was obtained at 6 h intervals for in vitro analysis of oocyte mat...

journal_title：General and comparative endocrinology

authors： Jeng SR,Yueh WS,Lee YH,Yen HF,Chang CF

更新日期：2012-04-01 00:00:00

abstract：:In most vertebrates, sex steroids play a critical role in gonadal development, maturation of germ cells, and development of secondary sexual characteristics. Sex steroids are synthesized in steroid-producing cells (SPCs) in the testis known as Leydig cells, as well as in thecal and granulosa cells in the ovary. In SPC...

journal_title：General and comparative endocrinology

authors： Nakamoto M,Fukasawa M,Tanaka S,Shimamori K,Suzuki A,Matsuda M,Kobayashi T,Nagahama Y,Shibata N

更新日期：2012-04-01 00:00:00

abstract：:Somatolactin (SL) and SL receptor (SLR) belong to the growth hormone and cytokine type I receptor superfamilies, respectively. However, further research is required to define the duplications and functions of SL and its receptors in basal vertebrates including environmental background color adaptation in fish. In the ...

journal_title：General and comparative endocrinology

authors： Cánepa MM,Zhu Y,Fossati M,Stiller JW,Vissio PG

更新日期：2012-03-01 00:00:00

abstract：:In this study, we investigated the presence of nerve growth factor (NGF) and its receptors tyrosine kinase A (TrkA) and p75 in the uterus of the wild ground squirrels during the estrous period, early pregnancy and non-breeding period. In the estrous period and early pregnancy, NGF and TrkA were immunolocalized in stro...

journal_title：General and comparative endocrinology

authors： Li B,Sheng X,Song M,Zhang H,Weng J,Zhang M,Hu X,Zhou J,Xu M,Weng Q,Watanabe G,Taya K

更新日期：2012-03-01 00:00:00

abstract：:Insulin pathways were demonstrated from invertebrates to vertebrates to be involved in the regulation of numerous processes including storage metabolism and reproduction. In addition, insulin system may integrate variations of environmental conditions like dietary restrictions. In the Pacific oyster Crassostrea gigas,...

journal_title：General and comparative endocrinology

authors： Jouaux A,Franco A,Heude-Berthelin C,Sourdaine P,Blin JL,Mathieu M,Kellner K

更新日期：2012-03-01 00:00:00

abstract：:The insulin/PI3K/Akt signaling pathway is strongly involved in the differentiation of C2C12 cells, as has been demonstrated by the addition of IGFs and insulin to culture media. In this study, we have characterized the role of insulin in chick myoblast proliferation and differentiation in vitro and in vivo, and have r...

journal_title：General and comparative endocrinology

authors： Sato K,Aoki M,Kondo R,Matsushita K,Akiba Y,Kamada T

更新日期：2012-02-01 00:00:00

abstract：:Prolactin (PRL) plays central roles in a wide range of body functions in mammals, and the actions are mediated by the specific cell surface receptor, the prolactin receptor (PRLR). To better understand the role of PRL in the yak (Bos grunniens), in the present study, we first cloned yak PRLR cDNA, and compared its mRN...

journal_title：General and comparative endocrinology

authors： Zi XD,Chen DW,Wang HM

更新日期：2012-02-01 00:00:00

abstract：:A triacetyl form of α-melanocyte-stimulating hormone (MSH) was found in carp (Cyprinus carpio) and goldfish (Carassius auratus), by selective detection of mass profile for cell secretory granules using direct tissue matrix-assisted laser desorption ionization with time-of-flight mass spectrometry (MALDI-TOF MS) analys...

journal_title：General and comparative endocrinology

authors： Yasuda A,Tatsu Y,Shigeri Y

更新日期：2012-01-15 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：:Previous studies have provided evidence that D-Asp plays a role in steroid-mediated reproductive biology in amphibians, reptiles, birds and mammals. To examine the molecular involvement of D-Asp on steroidogenic pathway regulation, we analysed the expression of StAR, P450 aromatase and 5αRed2 mRNAs in Pelophylax escul...

journal_title：General and comparative endocrinology

authors： Burrone L,Raucci F,Di Fiore MM

更新日期：2012-01-01 00:00:00

abstract：:Due to global and local climate changes, farmed salmon may experience periods of elevated sea temperatures. An experiment was conducted to examine endocrine and dietary effects of high sea temperatures in adult (2.0 kg) and sexually immature Atlantic salmon, Salmo salar L. Groups of salmon were exposed to 19 °C while ...

journal_title：General and comparative endocrinology

authors： Hevrøy EM,Waagbø R,Torstensen BE,Takle H,Stubhaug I,Jørgensen SM,Torgersen T,Tvenning L,Susort S,Breck O,Hansen T

更新日期：2012-01-01 00:00:00

abstract：:This study aimed at investigating the role of sexual steroids in the regulation of the expression of the single aromatase gene and steroid receptor subtypes in the brain-pituitary-ovarian axis of the Japanese eel. Unlike other teleosts, which possess duplicated genes for aromatase, cyp19a1a and cyp19a1b, expressed in ...

journal_title：General and comparative endocrinology

authors： Jeng SR,Pasquier J,Yueh WS,Chen GR,Lee YH,Dufour S,Chang CF

更新日期：2012-01-01 00:00:00

abstract：:The regulated secretory pathway is a hallmark of endocrine and neuroendocrine cells. This process comprises different sequential steps, including ER-associated protein synthesis, ER-to-Golgi protein transport, Golgi-associated posttranslational modification, sorting and packing of secretory proteins into carrier granu...

journal_title：General and comparative endocrinology

authors： Vázquez-Martínez R,Díaz-Ruiz A,Almabouada F,Rabanal-Ruiz Y,Gracia-Navarro F,Malagón MM

更新日期：2012-01-01 00:00:00

abstract：:The vertebrate oxytocin and vasopressin receptors form a family of G-protein-coupled receptors (GPCRs) that mediate a large variety of functions, including social behavior and the regulation of blood pressure, water balance and reproduction. In mammals four family members have been identified, three of which respond t...

journal_title：General and comparative endocrinology

authors： Ocampo Daza D,Lewicka M,Larhammar D

更新日期：2012-01-01 00:00:00

abstract：:The skin is the largest organ in the body and is a barrier between the internal and external environment. The present study evaluates how PTU, a goitrogen, that is used to treat hyperthyroidism affects the structure and electrical properties of the frog (Xenopus laevis) skin. The results are considered in the context ...

journal_title：General and comparative endocrinology

authors： Carvalho ES,Fuentes J,Power DM

更新日期：2011-12-01 00:00:00

abstract：:Stress has long lasting effects on physiology, development, behavior, reproductive success and the survival of an individual. These effects are mediated by glucocorticoids, such as corticosterone, via glucocorticoid receptors (GR), however the exact mechanisms underlying these effects are unknown. GR have been widely ...

journal_title：General and comparative endocrinology

authors： Shahbazi M,Schmidt M,Carruth LL

更新日期：2011-12-01 00:00:00

abstract：:The insulin-like growth factor-1 (IGF-1) plays an important role in the regulation of reproductive function. In the present study, we examined the effects of caloric restriction (CR) on the reproductive lifespan in rats and investigated the potential role of IGF-1. After 10 weeks of treatment, we determined the distri...

journal_title：General and comparative endocrinology

authors： Li L,Fu YC,Xu JJ,Chen XC,Lin XH,Luo LL

更新日期：2011-11-01 00:00:00

abstract：:Thyroid hormones (TH) are key regulators of metabolism and development, yet our understanding of the variability in serum TH concentrations in free-ranging marine mammals is limited. Thus, we examined the interrelationships between TH and age, sex, reproductive status, geographic location, and ocean temperatures in wi...

journal_title：General and comparative endocrinology

authors： Fair PA,Montie E,Balthis L,Reif JS,Bossart GD

更新日期：2011-11-01 00:00:00

abstract：:Molecular cloning of thyrotropin-releasing hormone receptors (TRHR) was performed in a teleost, the sockeye salmon (Oncorhynchus nerka). Four different TRHR cDNAs were cloned and named TRHR1, TRHR2a, TRHR2b and TRHR3 based on their similarity to known TRHR subtypes in vertebrates. Important residues for TRH binding we...

journal_title：General and comparative endocrinology

authors： Saito Y,Mekuchi M,Kobayashi N,Kimura M,Aoki Y,Masuda T,Azuma T,Fukami M,Iigo M,Yanagisawa T

更新日期：2011-11-01 00:00:00

abstract：:In captivity, the adrenocortical stress response can be permanently altered by events that occur during early life. Free-living animals have rarely been examined in this regard. To examine whether early-life events impact the hypothalamo-pituitary-adrenal (HPA) axis in the natural setting, we evaluated the stress resp...

journal_title：General and comparative endocrinology

authors： Landys MM,Goymann W,Slagsvold T

更新日期：2011-11-01 00:00:00

abstract：:Although there is general agreement that thyroid hormone is an important hormonal regulator of testis physiology during development period, its role in the post-pubertal and adult testes is still controversial. Furthermore, most experimental studies to date have focused on thyroid hormone effects on the developing tes...

journal_title：General and comparative endocrinology

authors： Ibrahim W,Tousson E,Ali EM,Mansour MA

更新日期：2011-11-01 00:00:00

abstract：:The vasoconstrictive and cardiovascular actions of a recently identified bradykinin (BK)-related peptide (Gly-Ile-Thr-Ser-Trp-Leu-Pro-Phe) from the little skate, Leucoraja erinacea were examined in the unanesthetised little skate. Intra-arterial administration of a skate BK (0.1-1 nmolkg(-1)) produced a hypertensive r...

journal_title：General and comparative endocrinology

authors： Dasiewicz PJ,Conlon JM,Anderson WG

更新日期：2011-11-01 00:00:00

abstract：:In the hypothalamus, endocannabinoids affect neuroendocrine activity by means of Gonadotropin-Releasing-Hormone-I (GnRH-I) inhibition. Since most vertebrates, human included, possess at least two GnRH molecular forms, the aim of this work was to investigate the effect of endocannabinoids on GnRH molecular forms other ...

journal_title：General and comparative endocrinology

authors： Chianese R,Ciaramella V,Fasano S,Pierantoni R,Meccariello R

更新日期：2011-09-15 00:00:00

abstract：:Insulin-like peptides (ILPs) regulate a multitude of biological processes, including metabolism and immunity to infection, and share similar structural motifs across widely divergent taxa. Insulin/insulin-like growth factor signaling (IIS) pathway elements are similarly conserved. We have shown that IIS regulates repr...

journal_title：General and comparative endocrinology

authors： Marquez AG,Pietri JE,Smithers HM,Nuss A,Antonova Y,Drexler AL,Riehle MA,Brown MR,Luckhart S

更新日期：2011-09-01 00:00:00

abstract：:Urinary corticosterone metabolite responses to capture have recently been shown for the first time in amphibians, and in the present study urinary corticosterone metabolite responses to capture and to confinement in captivity were measured in adult cane toads (Rhinella marina) in Queensland, Australia. An adrenocortic...

journal_title：General and comparative endocrinology

authors： Narayan EJ,Cockrem JF,Hero JM

更新日期：2011-09-01 00:00:00

abstract：:Fish have provided essential information about the structure, biosynthesis, evolution, and function of insulin (INS) as well as about the structure, evolution, and mechanism of action of insulin receptors (IR). INS, insulin-like growth factor (IGF)-1, and IGF-2 share a common ancestor; INS and a single IGF occur in Ag...

journal_title：General and comparative endocrinology

authors： Caruso MA,Sheridan MA

更新日期：2011-09-01 00:00:00

abstract：:The aim of the present study was to examine the species-specific stress response for seven Mediterranean fishes in culture. Also, to evaluate the method of measuring free cortisol concentration in the rearing water as a non-invasive and reliable indicator of stress in marine species, of aquaculture importance. Gilthea...

journal_title：General and comparative endocrinology

authors： Fanouraki E,Mylonas CC,Papandroulakis N,Pavlidis M

更新日期：2011-09-01 00:00:00

abstract：:Cholesterol transport across the mitochondrial membrane is rate-limiting for steroidogenesis in vertebrates. Previous studies in fish have characterized expression of the steroidogenic acute regulatory protein, however the function and regulation of other genes and proteins involved in piscine cholesterol transport ha...

journal_title：General and comparative endocrinology

authors： Doperalski NJ,Martyniuk CJ,Prucha MS,Kroll KJ,Denslow ND,Barber DS

更新日期：2011-08-01 00:00:00

abstract：:In the gilthead sea bream (Sparus auratus) 17β-estradiol (E₂) plays an important role in the synthesis of vitellogenin. During vitellogenesis, vitellogenin as a nutritional precursor protein is loaded with calcium, which requires elevated plasma calcium levels. This is accomplished via E₂-dependent processes. Reports ...

journal_title：General and comparative endocrinology

authors： Bevelander GS,Guerreiro PM,Spanings T,Flik G

更新日期：2011-08-01 00:00:00

abstract：:In many fishes, dopamine (DA) strongly inhibits luteinizing hormone (LH) release by direct action at the pituitary level. In this study, the effect of DA on LH synthesis was examined by detecting its β-subunit mRNA level in immature grass carp pituitary cells. Results showed that DA inhibited LHβ mRNA expression and i...

journal_title：General and comparative endocrinology

authors： Wang X,Zhao T,Wei H,Zhou H

更新日期：2011-08-01 00:00:00

abstract：:To understand how the social and physical environment influences behaviour, reproduction and survival, studies of underlying hormonal processes are crucial; in particular, interactions between stress and reproductive responses may have critical influences on breeding schedules. Several authors have examined the timing...

journal_title：General and comparative endocrinology

authors： Ninnes CE,Waas JR,Ling N,Nakagawa S,Banks JC,Bell DG,Bright A,Carey PW,Chandler J,Hudson QJ,Ingram JR,Lyall K,Morgan DK,Stevens MI,Wallace J,Möstl E

更新日期：2011-08-01 00:00:00

abstract：:How nestling birds respond to stressful situations may constitute an important survival component that has lasting developmental effects on the hypothalamic pituitary adrenal (HPA) axis. As birds are exposed to increasing amounts of potential anthropogenic stressors through land use change, understanding how these fac...

journal_title：General and comparative endocrinology

authors： Strasser EH,Heath JA

更新日期：2011-08-01 00:00:00

abstract：:Owl clutches typically hatch asynchronously, and brood size hierarchies develop. In this study, we describe intra-clutch variation of testosterone, androstenedione, estradiol, and corticosterone in Eastern screech owl egg yolks. In order to assess whether these hormones may have originated in the follicle, we also cha...

journal_title：General and comparative endocrinology

authors： Hahn DC

更新日期：2011-07-01 00:00:00

abstract：:In this study, the effect of acute and chronic insulin treatments on major factors involved in the control of muscle protein turnover were investigated in rainbow trout (Oncorhynchus mykiss). We found that acute but not chronic insulin administration leads to the induction of the phosphorylation of several key factors...

journal_title：General and comparative endocrinology

authors： Seiliez I,Panserat S,Skiba-Cassy S,Polakof S

更新日期：2011-07-01 00:00:00