Abstract：
:This study examines the regulation of thyroid activity in adult rough-skinned newts, Taricha granulosa. Aquatic, breeding-condition newts were hypophysectomized and were injected for 23 days with the mammalian adenohypophysial hormones: ACTH, PRL, and GH. During a fourth week of treatment, these newts also received TSH. Plasma T4 concentrations were lower in hypophysectomized newts than in sham-hypophysectomized newts 23 days after surgery. Both ACTH and PRL increased T4 titers above these in saline-injected control newts; GH alone had no effect. TSH effectively increased the plasma T4 concentrations in newts from all five groups. GH, and possibly PRL, depressed the response to TSH. Plasma T4 concentration was positively correlated with body fluid loss, suggesting that hormone concentration/dilution effects may occur generally in animals such as these that undergo substantial seasonal changes in degree of hydration.
journal_name
Gen Comp Endocrinoljournal_title
General and comparative endocrinologyauthors
Specker JL,Brown PS,Brown SCdoi
10.1016/0016-6480(85)90385-5subject
Has Abstractpub_date
1985-08-01 00:00:00pages
326-31issue
2eissn
0016-6480issn
1095-6840journal_volume
59pub_type
杂志文章abstract：:There are more CRH-like immunoreactive neurons in the preoptic nucleus and nucleus lateralis tuberis in the brain of feral brown trout, Salmo trutta, living in cadmium- and zinc-contaminated regions of the Eagle River than in fish from an uncontaminated control site. Histological analyses revealed that interrenal cell...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1997.7000
更新日期：1997-12-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2017.01.014
更新日期：2017-05-15 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2019.03.011
更新日期：2019-06-01 00:00:00
abstract：:Plasma concentrations of growth hormone (GH) were decreased following the intravenous administration of morphine sulfate. Maximum inhibition of GH secretion was observed 40 min after morphine sulfate challenge. At this time, doses of morphine sulfate (at 5 mg and 50 mg/kg) reduced the GH concentrations by 86 and 90%, ...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(87)90219-x
更新日期：1987-01-01 00:00:00
abstract：:The circulating serum concentrations of various steroid hormones in mature sockeye salmon were measured at four different developmental stages in their upstream migration to spawn at Adams River in British Columbia, Canada. In females, a high level of estradiol-17 beta was found in fish at the first location, and it p...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(86)90098-5
更新日期：1986-04-01 00:00:00
abstract：:Atrazine (ATZ) is a widely used herbicide and is considered an endocrine disruptor of different organisms. However, the molecular interactions of ATZ with biological targets in mammalian endocrine systems are not understood fully. In the present study, we observed that ATZ administration (50, 100 and 200 mg/kg) for 3 ...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2013.01.010
更新日期：2013-04-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(83)90094-1
更新日期：1983-07-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1994.1012
更新日期：1994-01-01 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
pub_type： 杂志文章
doi：10.1006/gcen.1994.1088
更新日期：1994-06-01 00:00:00
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journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2005.01.008
更新日期：2005-05-15 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
pub_type： 杂志文章
doi：10.1006/gcen.1995.1049
更新日期：1995-04-01 00:00:00
abstract：:In Sphaeroma serratum, the differentiation of the male external sexual characteristics, as a result of an androgenic gland implant, proceeds more easily in females in vitellogenesis than in immature females. On the contrary, the transformation of the gonads is quicker and more obvious in immature females than in matur...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(83)90250-2
更新日期：1983-04-01 00:00:00
abstract：:Prolactin (PRL) and two variants of growth hormone (GH), purified from pituitaries of striped bass (Morone saxatilis) and its hybrid with white bass (M. saxatilis x M. chrysops) by gel filtration chromatography under alkaline conditions followed by reversed-phase high pressure liquid chromatography, appear similar bet...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1999.7399
更新日期：2000-01-01 00:00:00
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
更新日期：1990-10-01 00:00:00
abstract：:The melanotrope cell in the amphibian pituitary pars intermedia is a model to study fundamental aspects of neuroendocrine integration. They release alpha-melanophore-stimulating hormone (alphaMSH), under the control of a large number of neurochemical signals derived from various brain centers. In Xenopus laevis, most ...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2010.01.008
更新日期：2010-09-01 00:00:00
abstract：:In the current study we describe the identification of novel leptin B homologous gene/s in the four salmonid species Atlantic salmon (Salmo salar), rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta) and Arctic charr (Salvelinus alpinus). Homology modeling of Salmo salar (Ss) LepB1/B2 suggests that the pro...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2013.03.022
更新日期：2013-06-15 00:00:00
abstract：:The brains of goldfish and other teleosts contain high-affinity binding sites for [3H][3-methyl-His2]thyrotropin-releasing hormone [( 3H]MeTRH) which closely resemble TRH receptors in mammalian brain and pituitary gland in apparent dissociation constant (KD = 3-4 nM), in pharmacology for eight TRH analogs, and in exhi...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(84)90233-8
更新日期：1984-01-01 00:00:00
abstract：:Melatonin is a skin lightening agonist of the toad Bufo ictericus. The hormone also exhibits an autodesensitizing action as well as an inhibitory activity on the darkening response to alpha-MSH. In an attempt to pharmacologically characterize the melatonin receptor of the toad pigment cells, serotonin and N-acetylsero...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1996.0110
更新日期：1996-08-01 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
pub_type： 杂志文章,评审
doi：10.1016/j.ygcen.2011.08.017
更新日期：2012-01-01 00:00:00
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
更新日期：1992-07-01 00:00:00
abstract：:Considerable research has been conducted on the interrelationships of the steroid hormone testosterone and reproductive behavior in seasonally breeding birds. In species in which males provide paternal care, males experience a peak in testosterone secretion that coincides with territory establishment and pair bonding,...
journal_title：General and comparative endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.ygcen.2008.05.009
更新日期：2008-07-01 00:00:00
abstract：:Growing evidence shows that sex steroids not only act within the individual whose glands produce them; they can also act on proximate conspecifics. Previous studies show that exogenous 17β-estradiol (E2) can be absorbed both nasally and percutaneously, arriving in blood, neural, reproductive, and peripheral tissues. W...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2019.113321
更新日期：2020-01-15 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
pub_type： 杂志文章
doi：10.1016/j.ygcen.2011.08.012
更新日期：2011-11-01 00:00:00
abstract：:The reproductive biology of the Indian major carp Cirrhinus mrigala is tightly synchronized with the seasonal changes in the environment. While the ovaries show growth from February through June, the fish spawn in July-August to coincide with the monsoon; thereafter the fish pass into the postspawning and resting phas...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/s0016-6480(03)00190-4
更新日期：2003-10-01 00:00:00
abstract：:Interrenal tissue from embryonic and larval rainbow trout (Oncorhynchus mykiss) was cultured in vitro and exposed to various doses of adrenocorticotropin (ACTH) to document the ontogeny of interrenal responsiveness to tropic stimulation. Resting and acute stress-induced changes in whole-body cortisol levels in vivo we...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1995.1122
更新日期：1995-09-01 00:00:00
abstract：:Immunocytochemical distribution and dynamics of vasotocin (VT) were studied in the air-breathing catfish Heteropneustes fossilis in relation to the reproductive cycle. Vasotocin was localized in the brain and ovary by streptavidin-biotin immunocytochemistry. The immunoreactivity was found throughout the hypothalamo-hy...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2008.09.003
更新日期：2008-11-01 00:00:00
abstract：:In crustaceans, vitellogenin (VTG, the precursor of major yolk protein) is synthesized in the ovary and/or hepatopancreas, and its synthesis is considered to be under the negative control of the vitellogenesis-inhibiting hormone (VIH), a neuropeptide secreted from the X-organ/sinus gland complex in the eyestalks. In t...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2006.03.005
更新日期：2006-09-01 00:00:00
abstract：:Thyroid hormones (THs) are crucial for normal vertebrate development and are the one obligate morphogen that drives amphibian metamorphosis. However, contrary to other metamorphosing vertebrates, lampreys exhibit a sharp drop in serum TH early in metamorphosis, and anti-thyroid agents such as potassium perchlorate (KC...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/j.ygcen.2012.12.007
更新日期：2013-03-01 00:00:00
abstract：:Studies of the ontogeny of IGF-I mRNA during embryonic and larval development of the gilthead sea bream Sparus aurata showed its expression during these early developmental stages. The present study applies in situ hybridization to localize IGF-I and IGF receptor mRNAs in 16-day larvae of S. aurata. Paraffin sections ...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1006/gcen.1997.6935
更新日期：1997-09-01 00:00:00
abstract：:TSH-like producing cells have been studied using the peroxidase-antiperoxidase (PAP) immunohistochemical technique and rabbit anti-human thyrotropin (TSH) antiserum in the pars distalis of five species of amphibian anuran tadpoles at different stages of development as well as in 1-year-old postmetamorphic animals. Thi...
journal_title：General and comparative endocrinology
pub_type： 杂志文章
doi：10.1016/0016-6480(88)90302-4
更新日期：1988-07-01 00:00:00
