Abstract：
:The regional distribution and relative concentrations of LHRH and beta-endorphin immunoreactivity in the hypothalamus were compared in sexually active and sexually inactive Soay rams. LHRH was localized principally in the medial basal hypothalamus and median eminence with lower concentrations in the anterior hypothalamus and preoptic area. beta-endorphin immunoreactivity was also found in highest concentrations in these regions but was more widely distributed into the rostral, dorsal and lateral parts of the hypothalamus. LHRH content in the medial basal hypothalamus was significantly lower in the sexually active rams compared to inactive rams while there was no difference in beta-endorphin immunoreactivity content between the two groups. Gel filtration chromatography of hypothalamic extracts revealed that the beta-endorphin immunoreactivity was due to both beta-lipotropin and beta-endorphin; the ratio of beta-endorphin: beta-lipotropin tended to be less in the sexually active rams than in the sexually inactive rams. The results are consistent with the hypothesis that beta-endorphin is a physiologically important endogenous opioid involved in the modulation of LHRH secretion.
journal_name
Domest Anim Endocrinoljournal_title
Domestic animal endocrinologyauthors
Ebling FJ,Lincoln GA,Martin GB,Taylor PLdoi
10.1016/0739-7240(87)90010-5subject
Has Abstractpub_date
1987-07-01 00:00:00pages
149-56issue
3eissn
0739-7240issn
1879-0054pii
0739-7240(87)90010-5journal_volume
4pub_type
杂志文章abstract：:Assay of blood progesterone (P4) is commonly practiced to determine the time of ovulation, diagnose luteal insufficiency, and predict time of parturition in bitches. Because of practical constraints, most blood samples cannot be assayed on site immediately after collection. The aim of this work was to evaluate the eff...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2013.07.002
更新日期：2013-10-01 00:00:00
abstract：:A positive-feedback loop between luteal oxytocin and uterine prostaglandin F2 alpha (PGF) is a major signal for luteolysis in ruminants. Likewise, uterine PGF causes luteolysis in mares, but the involvement of oxytocin in this process is unclear. We wanted: 1) to determine if the oxytocin-neurophysin I (OT-NP I) gene ...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/s0739-7240(99)00008-9
更新日期：1999-04-01 00:00:00
abstract：:Crossbred ovariectomized ewes were treated with steroid therapies determined previously to be adequate (progesterone-primed) or inadequate (unprimed) for embryonic development in order to determine actual serum concentrations of replaced steroid hormones achieved by such treatments and to identify secreted endometrial...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(93)90017-6
更新日期：1993-04-01 00:00:00
abstract：:The objective of this study was to characterize plasma insulin-like growth factor-I (IGF-I) profiles during the estrous cycle in goats. Frequent blood samples were drawn during the day of estrus and during the luteal phase on Day 10 after estrus, and plasma growth hormone (GH) and IGF-I profiles were examined. Then, d...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/s0739-7240(99)00082-x
更新日期：2000-02-01 00:00:00
abstract：:beta-Casein (CSN2) is a major milk protein in most mammals. The CSN2 gene is generally induced by lactogenic hormones bound to its promoter. The expression of this gene can be enhanced by signal transducers and activators of transcription (STAT) and glucocorticoid receptor (GR). Here, we analyzed the promoter and intr...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2008.04.001
更新日期：2008-10-01 00:00:00
abstract：:Pituitary-dependent hyperadrenocorticism (PDH) in dogs is caused by a pituitary corticotroph adenoma. Although PDH is a common disorder in dogs, little is known about the underlying pathogenesis. In the pituitary glands of humans and mice, the pro-opiomelanocortin (POMC)-expressing cell lineages, the corticotrophs and...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2007.03.002
更新日期：2008-04-01 00:00:00
abstract：:Age-dependent interactions between environmental temperature and porcine growth hormone (pGH) treatment on the function of the somatotrophic axis were evaluated in the neonatal pig. At 3 d of age, 40 Landrace x Yorkshire x Duroc piglets received intraperitoneal implants containing either recombinant pGH (0.5 mg/d; n =...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/s0739-7240(99)00003-x
更新日期：1999-02-01 00:00:00
abstract：:In the present study we examined the influence of castration and exogenous estradiol on pulsatile LH release during the transition from infancy to the prepubertal period of development. Bull calves were assigned to treatments (N = 5 treatment) at 6 weeks of age. Treatments consisted of intact controls, castrates and c...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(87)90013-0
更新日期：1987-07-01 00:00:00
abstract：:Curcumin, the active component of curcuma longa, has been reported to be effective in alleviating chronic stress-induced disorders in rodents by modulating neuroprotection and neuroendocrine functions of the central nervous system, especially hippocampus. However, it is unclear whether curcumin can attenuate the subac...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2010.06.004
更新日期：2010-11-01 00:00:00
abstract：:The aim of this study was to determine the effects of growth hormone (GH) and insulin-like growth factor (IGF)-I on glycerol release and the regulation of IGF-I and IGF-II expression by GH in isolated rainbow trout adipocytes. Cells were also incubated with GH, tumor necrosis factor α (TNFα), or insulin to analyze the...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2014.11.002
更新日期：2015-04-01 00:00:00
abstract：:This is a test-report of ghrelin levels in plasma and proventriculus, the glandular portion of the avian stomach, by using a specific radioimmunoassay for acylated ghrelin, as well as the expression of the ghrelin gene in the proventriculus after a 12-h fasting period followed by a 6-h feeding period with 6-day-old la...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2006.03.006
更新日期：2007-05-01 00:00:00
abstract：:In this study, the expression patterns of inhibins, activins, insulin-like growth factor-I (IGF-I) and steroidogenic enzymes in equine placentae recovered during the latter two-thirds of gestation were examined. Concentrations of inhibin A and inhibin pro-alphaC in endometrial and fetal placental tissue homogenates we...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2005.09.005
更新日期：2006-07-01 00:00:00
abstract：:Water buffaloes are easily adaptable animals, whose raising and economical exploitation have been growing in the last three decades all over the world. Hyperstimulation of ovarian function in this species is a common technique aiming to improve reproductive performance. Superovulatory treatment affects corpus luteum (...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2006.07.003
更新日期：2007-11-01 00:00:00
abstract：:Ghrelin, the endogenous ligand for growth hormone secretagogue receptor 1a (GHS-R1a), stimulates food intake in mammals centrally and peripherally. In contrast, central injection of ghrelin inhibits feeding in neonatal chicks (Gallus gallus), which is thought to be mediated by the corticotrophin-releasing hormone (CRH...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2013.12.002
更新日期：2014-04-01 00:00:00
abstract：:The effects of acute stressor exposure on proximal (growth hormone [GH]) and distal (insulin-like growth factor-I [IFG-I] and insulin-like growth factor-binding proteins [IFGBPs]) components of the somatotropic axis are poorly understood in finfish. Rainbow trout (Oncorhynchus mykiss) were exposed to a 5-min handling ...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2010.09.007
更新日期：2011-04-01 00:00:00
abstract：:A heterologous radioimmunoassay system was validated for the determination of IGF1 concentrations in swine sera. Parallelism, accuracy and response to physiological stimuli were obtained following the incubation of serum samples with 1M glycine-glycine HC1 buffer at a pH of 3.5 +/- 0.2 for 24 hours at 37C. Following a...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(87)90035-x
更新日期：1987-01-01 00:00:00
abstract：:Bile acids (BAs) are synthesized in the liver via the oxidation of cholesterol and further metabolized by microbiota in the gut, where they simultaneously impact gut function. In the present study, 10 goats were randomly divided into 2 groups; 1 group was injected with dexamethasone (Dex; 0.2 mg/kg), and the other gro...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2018.05.005
更新日期：2018-10-01 00:00:00
abstract：:This study was aimed at testing the hypothesis that insulin-like growth factor binding protein (IGFBP)-3 can modulate hormone-dependent differentiation of granulosa cells in vitro. Granulosa cells from small (1 to 5 mm) follicles were collected from cattle, cultured for 2 d in medium containing 10% fetal calf serum, w...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/s0739-7240(98)00049-6
更新日期：1999-01-01 00:00:00
abstract：:In goats and sheep from the temperate and subtropical latitudes, the breeding season lasts from early autumn to late winter, whereas the anestrous season lasts from late winter to late summer. In prepubertal or postpartum females, the duration of the quiescent period depends mainly on the season of parturition and of ...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章,评审
doi：10.1016/j.domaniend.2020.106468
更新日期：2020-10-01 00:00:00
abstract：:Intact (n = 17) and unilaterally hysterectomized-ovariectomized (UHOX, n = 19) gilts were used to study conceptus development and the steroidogenic capability of three regions of the porcine placenta under normal and crowded intrauterine conditions. Gilts were hysterectomized on either Days 30, 50, 70, or 90 of gestat...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(94)00009-p
更新日期：1995-01-01 00:00:00
abstract：:Experimentally induced fever is accompanied by a variety of hormonal changes, and there is evidence to suggest that some of these responses may be mediated by prostaglandins. However, little is known about the endocrine effects of peripherally administered prostaglandins, especially in domesticated species. In this st...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(94)00021-r
更新日期：1995-04-01 00:00:00
abstract：:Adipose tissue (AT) depots are heterogeneous in terms of morphology and adipocyte metabolism. Adiponectin, one of the most abundant adipokines, is known for its insulin sensitizing effects and its role in glucose and lipid metabolism. Little is known about the presence of adiponectin protein in visceral (vc) and subcu...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2013.12.001
更新日期：2014-04-01 00:00:00
abstract：:Tyrosine aminotransferase (TAT) catalyzes the transamination of tyrosine to p-hydroxyphenylpyruvate. Accumulation of tyrosine in the body due to a genetic mutation in the TAT gene causes tyrosomia type II in humans. The TAT gene is regarded as a model for studying steroid-inducible factors regulating a variety of biol...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2016.05.001
更新日期：2016-10-01 00:00:00
abstract：:Feline proinsulin was cloned and expressed using a bacterial expression system. It was then purified from inclusion bodies using size exclusion chromatography and further processed including reduction of the protein. Following refolding, proinsulin was purified by reversed-phase high-performance liquid chromatography ...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2005.05.005
更新日期：2006-01-01 00:00:00
abstract：:Ghrelin is a gut peptide which participates in growth regulation through its somatotropic, lipogenic and orexigenic effects. Synergism of ghrelin and growth hormone-releasing hormone (GHRH) on growth hormone (GH) secretion has been reported in humans and rats, but not in domestic animals in vivo. In this study, effect...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2006.12.001
更新日期：2008-01-01 00:00:00
abstract：:The influence of genetic selection for improved feed conversion (FC) and fast growth (GL) in broiler chickens, on the hepatic growth hormone receptor was investigated as a function of age. Selection for improved feed conversion resulted in lean chickens, whereas selection for fast growth resulted in fat chickens. Grow...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(93)90024-6
更新日期：1993-07-01 00:00:00
abstract：:The site within the hypothalamic-pituitary axis at which cortisol acts to inhibit luteinizing hormone (LH) secretion was investigated in female pigs. Six ovariectomized, hypophysial stalk-transected (HST) gilts were given 1 microgram pulses of gonadotropin releasing-hormone (GnRH) iv every 45 min from day 0 to 12. On ...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/0739-7240(91)90008-8
更新日期：1991-07-01 00:00:00
abstract：:Environment enrichment is a rising topic for animal welfare but measures to identify effective enrichment interventions are lacking. In humans and rodent species, environmental enrichment increases brain-derived neurotrophic factor (BDNF), the most abundant neurotrophin in the brain. Higher BDNF concentration is ultim...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2018.05.007
更新日期：2018-10-01 00:00:00
abstract：:The feline thyroglobulin promoter was identified by a combination of standard polymerase chain reaction (PCR) techniques, using primers designed according to regions of homology in published sequences from other species, then adaptor ligated PCR. A 310 bp fragment of the feline thyroglobulin promoter was generated, in...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/s0739-7240(01)00093-5
更新日期：2001-04-01 00:00:00
abstract：:Adrenocorticotropic hormone (ACTH) challenges are frequently performed in repetition when evaluating stress or welfare in animals. To our knowledge, the repeatability of ACTH challenges in cattle, although fundamental to further studies of this type, has not yet been the subject of research. Therefore, the objective o...
journal_title：Domestic animal endocrinology
pub_type： 杂志文章
doi：10.1016/j.domaniend.2019.03.001
更新日期：2020-07-01 00:00:00
