当前位置： SCI文献检索 > GENERAL AND COMPARATIVE ENDOCRINOLOGY期刊下所有文献 > Changes in brain gonadotropin-releasing hormone- and vasoactive intestinal polypeptide-like immunoreactivity accompanying reestablishment of photosensitivity in male dark-eyed juncos (Junco hyemalis).

Changes in brain gonadotropin-releasing hormone- and vasoactive intestinal polypeptide-like immunoreactivity accompanying reestablishment of photosensitivity in male dark-eyed juncos (Junco hyemalis).

Abstract：

:In seasonally breeding, photoperiodic birds, the development of photorefractoriness is associated with decreased brain expression of gonadotropin-releasing hormone-like immunoreactivity (GnRH-li ir) and increased expression of vasoactive intestinal polypeptide-like immunoreactivity (VIP-li ir). Dissipation of photorefractoriness and reestablishment of photosensitivity are associated with increased GnRH-li ir brain production, but concurrent changes in VIP-li ir expression have not been investigated. To address this question, we compared the expression of VIP-li ir in the infundibulum (INF) of adult male dark-eyed juncos (Junco hyemalis) that were made photorefractory (PR) by prolonged exposure to long days with that of birds that were not photostimulated (PS), but had regained photosensitivity by exposure to short days for 5 (short-term-PS, ST-PS) or 13 (long-term-PS, LT-PS) consecutive months. Photosensitive males had smaller INF VIP-li ir cell bodies than PR males, but the numbers of INF VIP-li ir cells were independent of photoperiodic condition. Changes in infundibular VIP-li ir were correlated with changes in preoptic area (POA) GnRH-li expression. Specifically, photosensitive males had more and larger POA GnRH-li ir cells and more GnRH-li ir fibers in this region than PR males. Further, LT-PS males had more GnRH-li ir POA fibers and larger testes than ST-PS juncos. Thus, induction of photorefractoriness is associated with increased VIP and decreased GnRH brain expression whereas dissipation of photorefractoriness concurs with decreased VIP and increased GnRH brain expression. These results suggest a physiological role for VIP in the control of changes in GnRH expression as a function of the photosensitive condition.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Deviche P,Saldanha CJ,Silver R

doi

10.1006/gcen.1999.7361

keywords:

subject

Has Abstract

pub_date

2000-01-01 00:00:00

pages

8-19

issue

1

eissn

0016-6480

issn

1095-6840

pii

S0016-6480(99)97361-6

journal_volume

117

pub_type

杂志文章

相关文献

GENERAL AND COMPARATIVE ENDOCRINOLOGY文献大全
  • Fish sleeping under sandy bottom: interplay of melatonin and clock genes.

    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

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2012.01.007

    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

  • Molecular isoforms of chicken growth hormone (cGH): different bioactivities of cGH charge variants.

    abstract：:It has been suggested that the functional diversity of growth hormone (GH) is related to its molecular complexity. Here we report a characterization of charge and mass variants of chicken growth hormone (cGH) through a variety of electrophoretic systems [nondenaturing (ND-PAGE), denaturing (SDS-PAGE), under reducing a...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(90)90148-f

    authors： Arámburo C,Montiel JL,Perera G,Navarrete S,Sánchez R

    更新日期：1990-10-01 00:00:00

  • Seasonal reproduction of female round stingrays (Urobatis halleri): steroid hormone profiles and assessing reproductive state.

    abstract：:This study characterizes the seasonal reproductive cycle of female round stingrays (Urobatis halleri) in an open coastal site at Seal Beach, CA and a protected estuary at the Seal Beach National Wildlife Refuge (SBNWR). Female round stingrays were sampled from August 2004 to July 2006, and assessed for reproductive pa...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2009.12.009

    authors： Mull CG,Lowe CG,Young KA

    更新日期：2010-04-01 00:00:00

  • Relationship between firing activity of bombyxin-producing neurosecretory cells and hemolymph bombyxin titer in the silkworm Bombyx mori.

    abstract：:Isolated brain-retrocerebral neurohemal complex of the silkworm of Bombyx mori was stimulated electrically and the released bombyxin (an insulin-like neuropeptide) was measured using time-resolved fluoroimmunoassay. The amount of bombyxin release depended on the number of stimulus pulses delivered to the axonal tract ...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2004.03.009

    authors： Suenobu A,Mizoguchi A,Ichikawa T

    更新日期：2004-07-01 00:00:00

  • Evidence for "short loop" feedback regulation of prolactin and growth hormone secretion in the pigeon.

    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

    pub_type： 杂志文章

    doi：10.1016/0016-6480(84)90106-0

    authors： Hall TR,Chadwick A

    更新日期：1984-08-01 00:00:00

  • Environmental enrichment modulates glucocorticoid receptor expression and reduces anxiety in Indian field male mouse Mus booduga through up-regulation of microRNA-124a.

    abstract：:Enriched environmental condition (EC) has been known to reduce anxiety. In this study, we examined whether an EC could enhance anxiolytic behavior in the Indian field mouse Mus booduga by down-regulating the expression of glucocorticoid receptor (GR) through microRNA-124a. Wild individuals were captured at agricultura...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2014.01.005

    authors： Durairaj RV,Koilmani ER

    更新日期：2014-04-01 00:00:00

  • Isolation and biological characterization of a 6-kDa protein from hepatopancreas of lobster Panulirus argus with insulin-like effects.

    abstract：:A protein with insulin-like effects was isolated from the hepatopancreas of the lobster Panulirus argus following a classic method for mammalian insulin purification from the pancreas. After acid-alcoholic extraction and ethanol-ether precipitation followed by molecular filtration chromatography, a protein with an app...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/s0016-6480(03)00014-5

    authors： Gallardo N,Carrillo O,Moltó E,Deás M,González-Suárez R,Carrascosa JM,Ros M,Andrés A

    更新日期：2003-05-01 00:00:00

  • Identification of genes for the ghrelin and motilin receptors and a novel related gene in fish, and stimulation of intestinal motility in zebrafish (Danio rerio) by ghrelin and motilin.

    abstract：:In mammals ghrelin has a diverse range of effects including stimulation of gut motility but although present in teleost fish its effects on motility have not been investigated. The present study used bioinformatics to search for fish paralogues of the ghrelin receptor and the closely related motilin receptor, and inve...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2007.05.016

    authors： Olsson C,Holbrook JD,Bompadre G,Jönsson E,Hoyle CH,Sanger GJ,Holmgren S,Andrews PL

    更新日期：2008-01-01 00:00:00

  • Corticosterone and migratory fueling in Northern wheatears facing different barrier crossings.

    abstract：:Corticosterone, at baseline and moderately elevated levels, is thought to regulate energy mobilization during the predictable life-history cycle. In birds, corticosterone is known to be moderately elevated during migration, and some experiments on captive, but migratory active birds have shown that exogenous corticost...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2013.02.042

    authors： Eikenaar C,Fritzsch A,Bairlein F

    更新日期：2013-06-01 00:00:00

  • Expression of Wnt signaling skeletal development genes in the cartilaginous fish, elephant shark (Callorhinchus milii).

    abstract：:Jawed vertebrates (Gnasthostomes) are broadly separated into cartilaginous fishes (Chondricthyes) and bony vertebrates (Osteichthyes). Cartilaginous fishes are divided into chimaeras (e.g. ratfish, rabbit fish and elephant shark) and elasmobranchs (e.g. sharks, rays and skates). Both cartilaginous fish and bony verteb...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2013.06.021

    authors： D'Souza DG,Rana K,Milley KM,MacLean HE,Zajac JD,Bell J,Brenner S,Venkatesh B,Richardson SJ,Danks JA

    更新日期：2013-11-01 00:00:00

  • Regulation of growth hormone (GH) receptor (GHR1 and GHR2) mRNA level by GH and metabolic hormones in primary cultured tilapia hepatocytes.

    abstract：:Growth hormone (GH) regulates essential physiological functions in teleost fishes, including growth, metabolism, and osmoregulation. Recent studies have identified two clades of putative receptors for GH (GHR1 clade and GHR2 clade) in fishes, both of which are highly expressed in the liver. Moreover, the liver is an i...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2012.07.010

    authors： Pierce AL,Breves JP,Moriyama S,Uchida K,Grau EG

    更新日期：2012-10-01 00:00:00

  • Daily infusion of corticosterone and reproductive function in the domestic hen (Gallus domesticus).

    abstract：:The purpose of this study was to examine the effect of the daily infusion of corticosterone on reproductive function in the laying hen and to determine the relationship between the cyclic pattern of plasma concentrations of corticosterone on the open-period for the preovulatory release of LH. An exogenous rhythm of pl...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(91)90145-v

    authors： Petitte JN,Etches RJ

    更新日期：1991-09-01 00:00:00

  • Urinary clearance of arginine vasotocin in Pekin ducks.

    abstract：:To quantify the renal excretion of arginine vasotocin (AVT) in birds, synthetic AVT was infused into conscious Pekin ducks at rates of 0.03, 0.10, and 0.30 ng/kg/min for 30 min and the relationships between plasma and urine AVT concentrations were monitored by radioimmunoassay. As plasma AVT concentrations increased (...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1006/gcen.1995.1090

    authors： Gray DA

    更新日期：1995-07-01 00:00:00

  • Modulation of metabolic and clock gene mRNA rhythms by pineal and retinal circadian oscillators.

    abstract：:Avian circadian organization involves interactions between three neural pacemakers: the suprachiasmatic nuclei (SCN), pineal, and retina. Each of these structures is linked within a neuroendocrine loop to influence downstream processes and peripheral oscillations. However, the contribution of each structure to drive o...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2008.12.015

    authors： Karaganis SP,Bartell PA,Shende VR,Moore AF,Cassone VM

    更新日期：2009-04-01 00:00:00

  • The effects of age, season, and gender on serum cortisol levels in the tammar wallaby, Macropus eugenii.

    abstract：:Serum cortisol levels were measured in a total of 73 tammar wallabies maintained in a captive population at Macquarie University, NSW, Australia. Previous studies of corticosteroids in marsupials have generally involved low sample numbers, a diverse array of analytical techniques, and a variety of sampling conditions....

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/s0016-6480(03)00185-0

    authors： McKenzie S,Deane EM

    更新日期：2003-10-01 00:00:00

  • Characterization of two new preproGnRH mRNAs in the tree shrew: first direct evidence for mesencephalic GnRH gene expression in a placental mammal.

    abstract：:Reproductive maturation and regulation is centrally orchestrated by gonadotropin-releasing hormone (GnRH). GnRH produced in the vertebrate hypothalamus acts on the pituitary to regulate gonadotropins. In nonplacental mammalian species, it has recently been shown that a second GnRH gene is expressed in mesencephalic ce...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1006/gcen.1996.0135

    authors： Kasten TL,White SA,Norton TT,Bond CT,Adelman JP,Fernald RD

    更新日期：1996-10-01 00:00:00

  • Purification and characterization of plasma vitamin D binding protein from the snapping turtle, Chelydra serpentina.

    abstract：:Vitamin D binding protein (DBP) was isolated from the plasma of the snapping turtle, Chelydra serpentina (mixed sex adult), and compared with the previously characterized dual function binding plasma protein that binds both thyroxine (T4) and vitamin D (tsTDBP) in an emydid turtle, Trachemys scripta. Purification of C...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1006/gcen.1996.0182

    authors： Horowitz M,Licht P

    更新日期：1996-12-01 00:00:00

  • Effect of methallibure on gestation in the guppy, Poecilia reticulata.

    abstract：:Methallibure treatment (1 mg fed on alternate days to a female and a male kept in 1 liter of 25% seawater) started from 1 or 7 days postpartum (early gestation) inhibited gestation in the wild guppy, Poecilia reticulata. A few of the fish treated from 7 days postpartum (2/9) did give birth, but the young either were d...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(85)90329-6

    authors： Lam TJ,Pavri C,Ng KL

    更新日期：1985-11-01 00:00:00

  • GnRH and substance P regulate prostaglandins and sex steroids from reptilian (Podarcis sicula sicula) ovarian follicles and corpora lutea.

    abstract：:The in vitro effects of salmon gonadotropin-releasing hormone (sGnRH), substance P (SP), and their antagonists on prostaglandin F2 alpha (PGF2 alpha), prostaglandin E2 (PGE2), progesterone, androgens, and estradiol-17 beta release by follicles and corpus luteum (CL) of the oviparous lizard, Podarcis sicula sicula, wer...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1006/gcen.1994.1018

    authors： Gobbetti A,Zerani M,Di Fiore MM

    更新日期：1994-02-01 00:00:00

  • Degradation of gonadotropin-releasing hormones in the gilthead seabream, Sparus aurata. I. Cleavage of native salmon GnRH and mammalian LHRH in the pituitary.

    abstract：:The pattern and kinetics of degradation of native salmon gonadotropin-releasing hormone (sGnRH) and mammalian leuteinizing hormone-releasing hormone (LHRH) by pituitary bound enzymes were studied in the gilthead seabream, Sparus aurata. sGnRH and LHRH were incubated for different periods of time with membrane or cytos...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(90)90115-3

    authors： Goren A,Zohar Y,Fridkin M,Elhanati E,Koch Y

    更新日期：1990-08-01 00:00:00

  • Role of thyroid and testicular hormones in the regulation of basal metabolic rate, gonad development, and body weight of spotted munia, Lonchura punctulata.

    abstract：:Normal saline, L-thyroxine (L-T4, 0.5 micrograms/bird/day), and testosterone (100 micrograms/bird/day) were administered separately to intact, thyroidectomized, and castrated spotted munia over a 30-day period and the effects on basal metabolic rate (BMR), gonads, and body weight were recorded. Thyroidectomy and castr...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(84)90062-5

    authors： Gupta BB,Thapliyal JP

    更新日期：1984-10-01 00:00:00

  • Identification and quantification of 5α-dihydrotestosterone in the teleost fathead minnow (Pimephales promelas) by gas chromatography-tandem mass spectrometry.

    abstract：:The steroid hormone 5α-dihydrotestosterone (DHT) is one of the most physiologically important androgens in male vertebrates, with the exception of teleost fish, in which it is generally assumed that DHT does not play any major physiological role. However, this assumption is challenged by the fact that all the componen...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2013.06.017

    authors： Margiotta-Casaluci L,Courant F,Antignac JP,Le Bizec B,Sumpter JP

    更新日期：2013-09-15 00:00:00

  • Use of salivary cortisol to evaluate the influence of rides in dromedary camels.

    abstract：:Animals in captivity and in the wild face numerous challenges, including the risk of enduring acute or chronic stress. In captivity, facilities attempt to alleviate the risk of chronic stress by providing environmental enrichment, shown to minimize behavioral disorders and stress in several species. One potential form...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2014.11.007

    authors： Majchrzak YN,Mastromonaco GF,Korver W,Burness G

    更新日期：2015-01-15 00:00:00

  • Identification of angiotensin I in several vertebrate species: its structural and functional evolution.

    abstract：:In order to delineate further the molecular evolution of the renin-angiotensin system in vertebrates, angiotensin I (ANG I) has been isolated after incubation of plasma and kidney extracts of emu (Dromiceus novaehollandiae), axolotl (Ambystoma mexicanum), and sea lamprey (Petromyzon marinus). The identified sequences ...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2003.10.011

    authors： Takei Y,Joss JM,Kloas W,Rankin JC

    更新日期：2004-02-01 00:00:00

  • Measurement of plasma renin activity in the freshwater turtle.

    abstract：:Components of the renin angiotensin system have been identified in many nonmammalian vertebrates. However, in many of these animals, including reptiles, the physiological functions and importance of the system remain unclear. To aid in the study of the system in a reptile we modified a commercially available radioimmu...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(88)90120-7

    authors： Stephens GA,Caron B

    更新日期：1988-06-01 00:00:00

  • Hypothyroidism induced by postnatal PTU (6-n-propyl-2-thiouracil) treatment decreases Sertoli cell number and spermatogenic efficiency in sexually mature pigs.

    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

    pub_type： 杂志文章

    doi：10.1016/j.ygcen.2020.113593

    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

  • Targeted expression of androgen receptors in tooth-forming tissues of a neotropical salamander (Bolitoglossa schizodactyla) enables region-specific formation of dimorphic types of teeth in the male.

    abstract：:Bicuspid teeth are a morphological characteristic in adult metamorphosed urodeles. However, during the mating season the males of many species of plethodontid salamanders (Urodela, Plethodontidae) from northern America bear large monocuspid teeth on their jaws. Since androgen levels are elevated during the mating seas...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/s0016-6480(03)00216-8

    authors： Ehmcke J,Wistuba J,Clemen G,Schlatt S

    更新日期：2003-10-15 00:00:00

  • Short-loop negative and positive feedback on ecdysone secretion by prothoracic gland in the tobacco hornworm, Manduca sexta.

    abstract：:Ecdysteroid production by the prothoracic glands of the tobacco hornworm, Manduca sexta was found to be under feedback control by the ecdysteroids in hemolymph using both culture in vivo in diapausing pupae lacking the brain-corpora cardiaca-corpora allata complex and the prothoracic glands and culture in vitro. Proth...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(89)90072-5

    authors： Sakurai S,Williams CM

    更新日期：1989-08-01 00:00:00

  • Seasonal changes in body mass, insulin, and glucocorticoids of free-living golden-mantled ground squirrels.

    abstract：:The aim of the present study was to determine the relationship between seasonal variation in levels of insulin, cortisol, and corticosterone and body mass in a natural population of golden-mantled ground squirrels (Spermophilus saturatus) over the active season, from April to August. The body mass of females is at an ...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1006/gcen.1994.1189

    authors： Boswell T,Woods SC,Kenagy GJ

    更新日期：1994-12-01 00:00:00

  • Effects of melatonin implants on insulin-like growth factor 1 in male red deer (Cervus elaphus).

    abstract：:Red deer stags have a seasonal pattern of growth, alternating between periods of summer weight gain and winter weight loss that are influenced by photoperiod and by exogenous melatonin. A seasonal pattern of plasma insulin-like growth factor 1, also influenced by photoperiod, underlies the seasonal growth pattern. The...

    journal_title：General and comparative endocrinology

    pub_type： 杂志文章

    doi：10.1016/0016-6480(92)90156-e

    authors： Suttie JM,Breier BH,Gluckman PD,Littlejohn RP,Webster JR

    更新日期：1992-07-01 00:00:00