Showing papers in "Domestic Animal Endocrinology in 2004"

TL;DR: In this paper, the effects of nutrient intake during pregnancy on placental growth and vascular development were studied, and both nutrient restriction of the adult dam and overnourishment of the adolescent dam during pregnancy suppress placental cell proliferation and vascularity.

TL;DR: In vivo studies and results based on cell lines or primary cell cultures show that IGF-I and IGF-II stimulate both proliferation and differentiation of myoblasts and satellite cells in a time and concentration-dependent way, via interaction with type I IGF receptors.

TL;DR: Investigation of the mRNA expression of various soluble immune components and of the major milk proteins during the acute phase of mammary inflammation found most inflammatory factors increased within hours, whereas that of most milk proteins remained unchanged.

TL;DR: This review will focus on elements of intercellular signaling, using data from cell culture studies to illustrate specific examples of signaling pathways between cells.

TL;DR: Evidence is provided that plasma leptin concentrations are reduced with short-term fasting and rebound on refeeding in dairy cattle with the response dependent on the physiological state of the animals.

TL;DR: The information covered in this review will describe the major steps in the development of the HPA axis in the chicken embryo and show that the chicken has an emblematic HPA neuroendocrine axis.

TL;DR: The results suggest the existence of a catfish counter part to mammalian IGFBP-1, similar to lower molecular mass IGFBPs reported in other species of fish and provide additional evidence of the conserved nature of the IGF-IGFBP-growth axis in fish.

TL;DR: This review summarizes the available knowledge on the effects of different maternal feeding strategies and maternal GH administration during pregnancy and their interactions on metabolic and hormonal status in the feto-maternal unit, skeletal muscle development and growth of the offspring in pigs.

TL;DR: The review deals primarily on the regulation of development and metabolism of adipose tissue by growth hormone (GH) and the insulin-like growth factor (IGF) system, with a special focus on the pig.

TL;DR: Findings revealed that a single missense mutation (Asp298Asn) of aspartic acid to asparagine in MC4R gene decreased cAMP content andMC4R signaling, but with no difference in the ligand binding was associated with growth and feed intake traits in domestic pigs.

TL;DR: The insulin cascade appears to respond normally in chicken liver but to be refractory in chicken muscle, making chicken muscle an interesting model of insulin resistance.

TL;DR: Results demonstrate a cell-specific pattern of IGF system member gene expression within bovine COC suggesting interaction between the somatic and germinal compartments and possible synergistic actions between IGF-1 and FSH.

TL;DR: IGBP-5 seems important for regulating both apoptosis and cell proliferation in the mammary gland during development and post-lactation involution and intracellular events involving nuclear localisation of IGFBP- 5 have been shown to have the ability to inhibit cell proliferation.

TL;DR: Evidence of AR mRNA expression in bovine follicles is provided and suggestions that AR mRNA increases during early follicle development are suggested.

TL;DR: Evidence is provided that chickens selected for high growth rates may be less sensitive or responsive to peripheral concentrations of leptin than chickens with low growth rates, suggesting that the faster growth of broiler chicks may be related to a lessened responsiveness to anorexigenic factors.

TL;DR: The data shows for the first time that two major paracrine regulators of muscle growth, IGF-I and MSTN, are sensitive to nutrient supply in hatching chicks, and also that fasting reduced IGF- I and M STN mRNA levels in muscles of older chickens.

TL;DR: It is concluded that the changes in GLUT4 are early derangements in obesity and occur before glucose intolerance is clinically evident.

TL;DR: These studies are the first in cattle to show that estradiol selectively inhibits IGFBP-2, -3, and -4 gene expression in theca cells, inhibits IGF BP-5 gene Expression in large-follicle granulosa cells, and stimulates IGFBP

TL;DR: The data support the conclusion that in mouflon, an endogenous circannual rhythm of prolactin (PRL) secretion exists, and that the seasonal cycle of hair growth and moult appears to depend, at least in part, on circulating levels of PRL.

TL;DR: Cortisol infusion to induce immune suppression in vivo occurred only at pharmacological doses, indicating that during castration cortisol per se is not responsible for the suppression of in vitro IFN-gamma production.

TL;DR: Results show that chronic in vivo exposure of prepubertal female lambs to BPA can have significant effects on LH secretion that are comparable to those seen following exposure to the known xenoestrogen, DES.

TL;DR: Findings show that WAT apoptosis can be induced by activation of beta-AR in mice, although the mechanism is unknown.

TL;DR: Results indicate that components of the neuroendocrine axis that regulate GnRH and LH secretion are functional and leptin sensitive before the onset of puberty.

TL;DR: The data suggest that swine enteric disease is associated with reduced circulating IGF-I and reductions in total IGFBP and IGFBP-3, however, serum leptin was not affected by enteringic disease challenge.

TL;DR: Plasma cortisol concentration provides an excellent indicator of handling stress in reindeer and enables measurements of plasma cortisol levels close to basal concentrations that may be used for reference values in studies where indicators of physiological stress are required.

TL;DR: The data suggest that while adult porcine hepatocytes are indeed sensitive to hormonal manipulation, leptin has no direct influence on hepatic energy metabolism in swine.

TL;DR: It is concluded that BMPs and GDF-9 may have distinct functions in several stages of follicle development in neonatal pig ovaries, demonstrating that folliculogenesis in piglets might be controlled by the interaction with these factors.

TL;DR: It is suggested that transrectal ultrasonography is a reliable tool for diagnosis of ovarian follicular cysts and gonadotropin-releasing hormone (GnRH) can be used to effectively treat ovarian follicle cysts in goats with 80% success rate.

TL;DR: Comparison of comparative quantification of steroidogenic transcripts in placenta and corpus luteum of cattle and sheep during pregnancy and post partum demonstrates that cattle and Sheep use different promoters to direct Cyp19 expression during pregnancy.

TL;DR: The results suggest that the luteal endothelin system is regulated in a PGF2alpha-independent and -dependent manner and is supported by the observation that the activity of ECE-1 remained unchanged throughout the ovarian cycle.