Abstract:
:Binding of 125I-labelled arginine vasotocin (AVT) was studied in isolated intact gill cells obtained from eels (Anguilla anguilla) adapted to fresh water (FW) or to sea water (SW). Experiments carried out at 20 degrees C showed maximum and stable binding beyond 10 min of incubation. Specific binding, determined by using labelled peptide in the presence or absence of an excess of unlabelled hormone, represented 30-50% of total and was reversible, with a half-time of less than 5 min. Scatchard plot analysis revealed the presence of a single population of saturable, high-affinity sites. Maximum binding capacity (Bmax: fmol AVT/10(6) cells) and dissociation constant (Kd: nM) were respectively 5.16 and 3.21 in FW and 24.25 and 1.05 in SW. Analysis of chloride cell number and size in gills and of binding characteristics of AVT revealed parallel changes with external salinity. These results are taken as evidence for the direct intervention of neurohypophysial peptides on the gill epithelium of teleost fishes.
journal_name
J Mol Endocrinoljournal_title
Journal of molecular endocrinologyauthors
Guibbolini ME,Henderson IW,Mosley W,Lahlou Bdoi
10.1677/jme.0.0010125subject
Has Abstractpub_date
1988-09-01 00:00:00pages
125-30issue
2eissn
0952-5041issn
1479-6813journal_volume
1pub_type
杂志文章abstract::Barrett's oesophagus (BO) and oesophageal adenocarcinoma (OAC) are regarded as complications of gastro-oesophageal reflux disease, although all the factors that contribute to the development of these lesions are unknown. Acid suppressive drugs are widely used for symptomatic therapy of reflux disease but may induce hy...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-08-0096
更新日期:2009-04-01 00:00:00
abstract::The hypothalamic arcuate nucleus (ARC) represents a major component of the neuroendocrine reproductive axis and plays an important role in controlling the onset of puberty as well as age-associated reproductive senescence. Although significant gene expression changes have been observed in the ARC during sexual maturat...
journal_title:Journal of molecular endocrinology
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abstract::Chemotactic cytokines (chemokines) are small secreted proteins that control leukocyte trafficking in immune organs. Chemokines which are induced in the brain during conditions of inflammation play a role in the local immune response. Recently, it has been established in the rodent brain that distinct chemokines and ch...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
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更新日期:2007-03-01 00:00:00
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journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-15-0279
更新日期:2016-04-01 00:00:00
abstract::Synthesis of the uterine receptor for the hypothalamic hormone oxytocin has been induced in oocytes from Xenopus laevis previously primed with bovine endometrium mRNA. The injected oocytes responded to oxytocin by showing dose-dependent oscillations in membrane currents as recorded by the voltage-clamp method. The res...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0010077
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abstract::Insulin-like 3 (INSL3), a Leydig cell-specific hormone, is essential for testis descent during foetal life and bone metabolism in adults. Despite its essential roles in male reproductive and bone health, very little is known regarding its transcriptional regulation in Leydig cells. To date, few transcription factors h...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-15-0139
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abstract::The effect of steroid hormone treatment on coho salmon (Oncorhynchus kisutch) was examined. The cDNAs for coho salmon FSH beta and LH beta subunits were cloned and sequenced using reverse transcriptase PCR. Northern blot analysis revealed that a single transcript of 1 kb for each of these subunits was present in the p...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0210291
更新日期:1998-12-01 00:00:00
abstract::Metallothioneins (MTs) are cytoprotective proteins acting as scavengers of toxic metal ions or reactive oxygen species. MTs are upregulated in follicular thyroid carcinoma and are regarded as a marker of thyroid stress in Graves' disease. However, the mechanism of MT regulation in thyrocytes is still elusive. In other...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-12-0200
更新日期:2013-06-04 00:00:00
abstract::An abundant, seven trans-membrane domain receptor related to the calcitonin receptor has been studied by a number of groups without identification of its ligand. A recent report claimed that the receptor was a type 1 CGRP receptor (Aiyar et al J. Biol. Chem. 271 11325-11329 (1996)). We have studied the equivalent rat ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0180267
更新日期:1997-06-01 00:00:00
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journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
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abstract::Prolactin (PRL)-releasing peptide (PrRP) is a strong candidate stimulator of pituitary PRL transcription and secretion in teleosts. However, the role in control of extrapituitary PRL expression is unclear even in mammals. To study the possible presence of PrRP-PRL axes not only in the brain-pituitary but also in perip...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.1.01768
更新日期:2005-06-01 00:00:00
abstract::The effects of 1,25-dihydroxyvitamin D3 (1,25-(OH)2D3; 10 nmol/l) on the human monomyelocytic cell line U937 were investigated. Addition of 1,25-(OH)2D3 led to a decrease in cell proliferation which fell at 72 h to 67.8 +/- 4.3% (mean +/- S.E.M.) of control values. The presence of CD14, a surface marker found on matur...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0030043
更新日期:1989-07-01 00:00:00
abstract::Fatty acids are essential nutrients that contribute to several intracellular functions. Fatty acid synthesis and oxidation are known to be regulated by sterol regulatory element-binding proteins (SREBPs), which play a pivotal role in the regulation of cellular triglyceride synthesis and cholesterol biogenesis. Recent ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-17-0289
更新日期:2018-10-01 00:00:00
abstract::The genetic predisposition of the host and the virus is the most important determinant for prediction of the course of human immunodeficiency virus type I (HIV-1) viral infection and acquired immune deficiency syndrome (AIDS) progression. Transcription from the HIV-1 long terminal repeat (LTR) is a crucial step for vi...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-06-0065
更新日期:2007-06-01 00:00:00
abstract::Parathyroid hormone (PTH) is secreted by the chief cells of the parathyroid gland in response to changes in ionized calcium (Ca(2+)) concentrations. In this study, we measured PTH secretion, and PTH mRNA and calcium-sensing receptor (CaR) mRNA expression by equine parathyroid chief cells in vitro. We also evaluated th...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0310609
更新日期:2003-12-01 00:00:00
abstract::Differences in binding and structural properties of ovine testicular FSH and LH receptors were investigated. The ovine FSH receptor did not discriminate between FSH of different species, although equine FSH was more reactive. In the same tissue, however, the LH receptor showed marked preference for ovine and bovine LH...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0060291
更新日期:1991-06-01 00:00:00
abstract::Thyroid hormones are important regulators of bone development and metabolism. We have demonstrated that tri-iodothyronine (T3) increased and 1,25-dihydroxyvitamin D3 (1,25D3) attenuated the T3-stimulated expression of osteocalcin (OCN) in the osteoblast-like cell line MC3T3-E1. By means of transfection of promoter-rep...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0300049
更新日期:2003-02-01 00:00:00
abstract::The GnRH receptor (GnRHR) is expressed in several non-pituitary tissues, notably in gonads. However, mechanisms underlying the gonad-specific expression of Gnrhr are not well understood. Here, Gnrhr expression was analysed in the developing testes and pituitaries of rats and transgenic mice bearing the human placental...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-12-0231
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journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0320571
更新日期:2004-04-01 00:00:00
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journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
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journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0220313
更新日期:1999-06-01 00:00:00
abstract::1,25-(OH)2-Vitamin D3 (1,25-D3) and the thyroid hormone tri-iodothyronine (T3) were previously shown to behave as adipogenic agents in murine Ob17 preadipocytes. Moreover, these agents interfere with each other's action during adipocyte differentiation. T3 receptor (TR) expression and a downmodulation of T3 binding si...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.1.01572
更新日期:2005-02-01 00:00:00
abstract::In previous studies we demonstrated that IGF-I induces proliferation of pituitary lactotrophs. In addition to its mitotrophic actions, IGF-I is known to prevent apoptosis induced by diverse stimuli in several cell types. In this study, we investigated the action of IGF-I on pituitary cell survival and the intracellula...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0330155
更新日期:2004-08-01 00:00:00
abstract::Activation of the hypothalamo-pituitary-adrenal (HPA) axis during stress is associated with increased expression of genes that code for regulatory hormones such as corticotrophin-releasing factor (CRF) and ACTH. The identity of the transcription factors that mediate these changes in gene expression is not known. In th...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0190291
更新日期:1997-12-01 00:00:00
abstract::Follicle-stimulating hormone (FSH) plays fundamental roles in male and female fertility. FSH is a heterodimeric glycoprotein expressed by gonadotrophs in the anterior pituitary. The hormone-specific FSHβ-subunit is non-covalently associated with the common α-subunit that is also present in the luteinizing hormone (LH)...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章,评审
doi:10.1530/JME-17-0308
更新日期:2018-04-01 00:00:00
abstract::The contribution of hypothalamic appetite-regulating peptides to further hyperphagia accompanying the course of lactation in rats was investigated by using PCR array and real-time PCR. Furthermore, changes in the mRNA expression for appetite-regulating peptides in the hypothalamic arcuate nucleus (ARC) were analyzed a...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1530/JME-13-0015
更新日期:2014-01-30 00:00:00
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journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0150011
更新日期:1995-08-01 00:00:00
abstract::The mechanism behind Ca(2)(+) entry into the parathyroid cells has been widely debated, and the molecular identities of the responsible ion channels have not been established yet. In this study, we show that the parathyroid cells lack voltage-operated Ca(2)(+) channels. Passive store depletion by thapsigargin, on the ...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-09-0138
更新日期:2010-05-01 00:00:00
abstract::In the common brushtail possum (Trichosurus vulpecula) lactation lasts for 200 days and consists of two distinct phases. Milk composition changes dramatically between phase 2 and 3, which correspond to early and late lactation respectively (phase 1 corresponds to pregnancy). RNA expression patterns have been establish...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/jme.0.0200037
更新日期:1998-02-01 00:00:00
abstract::Hypothalamic GHRH controls the release of GH from the pituitary gland and also acts as a growth factor in a variety of cancers. The mitogenetic activity of GHRH is exerted through the binding to the pituitary type receptor (pGHRH-R) and its splice variants, mainly SV1. The intracellular signaling pathways that are act...
journal_title:Journal of molecular endocrinology
pub_type: 杂志文章
doi:10.1677/JME-09-0121
更新日期:2010-02-01 00:00:00