... to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. 2024 Prenatal androgenization Polycystic ovary syndrome Anxiety Cognition Behavior Sheep Highlights In humans, prenatal androgenization is related...

...Yves Tillet Magnetic resonance imaging (MRI) brain analysis is used in rodents and for clinical investigation in humans, and it becomes also possible now for large animal models studies. Specific facilities are available with clinical scanners and benefit to neuroendocrine investigations in sheep...

... 2+ entry in normal gonadotropes. Primary cultures enriched in gonadotropes or somatotropes were produced from anestrous female sheep. Conventional whole-cell patch-clamp recording was used to measure inward membrane current in the absence of GnRH treatment, with and without 10 n M estradiol-17β (E 2...

...(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Opioid peptides Corticotropin-releasing hormone Vasopressin Sheep Ontogeny Opioid agonists endocrinology Cindy C...

... Melatonin Pars tuberalis Sheep Abstract It is not known where melatonin acts to influence the neuroendocrine axis of seasonally breeding mammals. However, since the pars tuberalis (PT) con­ tains the highest density of melatonin receptors, this adenohypophyseal subdi­ vision is a potential target...

...Ruth I. Wood; Vikas Mehta; Cristina G. Herbosa; Douglas L. Foster In sheep, prenatal exposure to androgens during a critical period for sexual differentiation can masculinize tonic luteinizing hormone (LH) secretion and defeminize the LH surge. The present study investigated the possible...

... products have not been identified yet. Therefore we studied the expression of several adenohypophyseal hormones and their subunits (TSH, FSH, LH, common α-chain, GH, ACTH, PRL, α- and γ-MSH, β-lipotropin) by immunocytochemistry, Northern blot analysis and in situ hybridization in the sheep pituitary. Only...

...Manuel O. López-Figueroa; Jean P. Ravault; Bruno Cozzi; Morten Møller By use of immunohistochemistry, a dense network of nerve fibres immunoreactive to the neuronal form of nitric oxide synthase (NOS, subtype I) was demonstrated in the pineal gland of sheep. The NOS-immunoreactive fibres were...

.... Bromocriptine Catecholamines Melatonin Prolactin Rhythms Sheep Neuroendocrine Rhythm s Neuroendocrinology 1995:62:425-433 Gerald A. Lincoln Domingo J. Tortonese MRC Reproductive Biology Unit. Centre for Reproductive Biology. Edinburgh. UK Does Melatonin Act on Dopaminergic Pathways in the Mediobasal...

...Terrence P. Fletchers; Gregory B. Thomas; John O. Willoughby; Iain J. Clarke The effect of hypothalamopituitary disconnection (HPD) on growth hormone (GH) secretion was studied in sheep. Plasma GH levels were measured in serial blood samples (10 min × 6-8 h) taken from 12 Romney wethers and 5 ewes...

...Ian S. Currie; Glenda Gillies; Anthony Nigel Brooks In sheep, arginine vasopressin (AVP) appears to be a more potent ACTH-releasing factor than ovine corticotrophin-releasing hormone. In order to investigate the neuroendocrine regulation of AVP secretion we have developed a novel system...

...F. Le Provost; Christine Leroux; Patrice Martin; Pierre Gaye; Jean Djiane The presence of prolactin (PRL) mRNA in the mammary gland of lactating goats and sheep was demonstrated by Northern analysis and RT-PCR. This provides evidence that the PRL gene is transcribed in this tissue. This ectopic...

... Retardation on Pituitary Luteinizing Hormone and Hypothalamic Neuropeptide Y in Ovariectomized Sheep Key Words Luteinizing hormone Neuropeptide Y Hypothalamus Growth-retardation Puberty Sheep Abstract The possible role of neuropeptide Y (NPY) in mediating the relationship between pituitary LH secretion...

... before the preovulatory release of LHRH and LH. On the basis of the present observations, the following sequence of events leading to the massive LH ovulatory surge in the sheep is suggested: (1) increased secretion of β-END in the NI/ME on the day of proestrus generates an increase in the releasable...

...Scott Whisnant; Robert L. Havern; Robert L. Goodman Evidence suggests that endogenous opioid peptides (EOP) inhibit pulsatile luteinizing hormone (LH) secretion during both the luteal and follicular phases of the ovine estrous cycle. Further data from sheep and other species indicate...

...-methyltransferase (PNMT) in the fetal sheep adrenal. We have also investigated the relative roles of the fetal pituitary and adrenal cortex in determining the extent of the interdigitation of the peripheral adrenaline (AD)-containing cells of the adrenal medulla with the inner zones of the adrenal cortex...

...Bojidar Stankov; Bruno Cozzi; Valeria Lucini; Pietro Fumagalli; Francesco Scaglione; Franco Fraschini Melatonin receptors were characterized in the brains of three mammals (rabbit, horse and sheep) by an in vitro binding technique, using 2-[ 125 I]iodomelatonin as labelled ligand. Although binding...

... (1 cm long × 0.46 diameter) and P implants, and group 4, medium E 2 implants. Jugular blood samples were taken at 10-min intervals for 9 h, during which there was a 3-hour pretreatment period, a 3-hour treatment period when the sheep were given six intravenous injections of 10 mg morphine every 30...

... levels of AVP and ACTH, we have studied the effect of intracerebroventricular (ICV) infusion of ANP on the hemodynamic and hormonal response to acute hemorrhage in conscious sheep. Two groups of 5 sheep received rat ANP(101–126) by ICV infusion (0.5 µg bolus followed by 0.5 µg/h for 3 h, or 5 µg bolus...

..., either alone or in combination with another component(s) of the hypothalamopituitary-adrenal axis, may play a role in the LHRH-induced inhibition of LHRH/LH secretion in the sheep. Neuroendocrinology 1990;51:705 712 © 1990 S. Karger AG, Basel 0028-3835/90/0516-0705 $ 2.75/0 Plasma Cortisol Is Increased...