• Gonadotropins are released under the control of gonadotropin-releasing hormone (GnRH) from the arcuate nucleus and preoptic area of the hypothalamus. (wikipedia.org)
  • Although gonadotropins are secreted in a pulsatile manner (as a result of pulsatile GnRH release), unlike the case of GnRH and GnRH agonists, constant/non-pulsatile activation of the gonadotropin receptors by the gonadotropins does not produce functional inhibition. (wikipedia.org)
  • The gonadotropin-releasing hormone (GnRH) neurons represent the final output neurons of the neural network controlling fertility and are suspected to be the primary locus of kisspeptin-GPR54 signaling. (jneurosci.org)
  • Gonadotropin release in response to administration of GnRH was lower in mares treated with deslorelin acetate than in control mares. (avma.org)
  • Conclusions and Clinical Relevance -Administration of deslorelin was associated with reduction in circulating concentrations of FSH and gonadotropin response to administration of GnRH during the estrous cycle. (avma.org)
  • Dopaminergic blockade with metoclopramide did not alter the gonadotropin response to GnRH in any subject group. (lu.se)
  • The objective of this study was to evaluate an adenoviral vectored gonadotropin releasing hormone (GnRH) vaccine as a method to suppress estrus behavior and cyclicity in mares. (auburn.edu)
  • GnRH agonist/antagonist drugs not only allow multiple eggs to develop with gonadotropin use, but also prevent premature or spontaneous ovulation, thus allowing timely egg recovery and fertilization in the laboratory for IVF treatment. (laivfclinic.com)
  • Gonadotropin-releasing hormone ( GnRH ) is a releasing hormone responsible for the release of follicle-stimulating hormone (FSH) and luteinizing hormone (LH) from the anterior pituitary . (wikidoc.org)
  • At the pituitary, GnRH stimulates the synthesis and secretion of the gonadotropins , follicle-stimulating hormone (FSH), and luteinizing hormone (LH). (wikidoc.org)
  • Is earlier administration of human chorionic gonadotropin (hCG) associated with the probability of pregnancy in cycles stimulated with recombinant follicle-stimulating hormone and gonadotropin-releasing hormone (GnRH) antagonists? (druglib.com)
  • Receptor for gonadotropin releasing hormone (GnRH) that mediates the action of GnRH to stimulate the secretion of the gonadotropic hormones luteinizing hormone (LH) and follicle-stimulating hormone (FSH). (drugbank.com)
  • Gonadotropin-releasing hormone (GnRH) is released from the hypothalamus. (msdmanuals.com)
  • Follicle development and serum concentrations of gonadotropins were monitored daily during 1 estrous cycle. (avma.org)
  • The increased gonadotropin levels could not be related to changes in body weight or plasma estradiol or serum sex hormone-binding globulin levels, and they approached normal levels during or after treatment of hyperthyroidism. (lu.se)
  • We conclude that serum T4 is of greater importance than serum T3 for at least short term gonadotropin regulation. (lu.se)
  • Serum gonadotropin and estrogen levels and their relationship to bone mineral content in exercise-related amenorrhea were studied in 11 amenorrheic women and 24 eumenorrheic women, all of whom were runners. (duke.edu)
  • These data suggest that, in exercise-related amenorrhea, low serum LH, FSH, and estrogen levels reflect an alteration in the hypothalamic control of gonadotropin release. (duke.edu)
  • Equine gonadotropins prepared from pregnant mare serum are used in reproductive studies. (jefferson.edu)
  • The effect of cetrorelix vs. ganirelix on pregnancy outcome using minimal gonadotropin stimulation in women with elevated day 3 serum follicle stimulating hormone levels. (druglib.com)
  • Serum gonadotropins and alpha subunit decline in aging normal postmenopausal women. (bvsalud.org)
  • Gonadotropins are glycoprotein hormones secreted by gonadotropic cells of the anterior pituitary of vertebrates. (wikipedia.org)
  • It is well know that pituitary hormones FSH and LH are called gonadotropins because they act on the gonads (testicles-ovaries) and promote their function. (com.gr)
  • Gonadotropins are hormones produced by the pituitary gland in the brain to stimulate sperm and egg development. (laivfclinic.com)
  • When these hormones are not released, injectable gonadotropins can be administered to grow and mature multiple eggs at once. (laivfclinic.com)
  • Objective -To evaluate gonadotropin secretion and ovarian function after administration of deslorelin acetate to induce ovulation in mares. (avma.org)
  • For example, the so-called menotropins (also called human menopausal gonadotropins) consist of LH and FSH extracted from the urine of menopausal women. (wikipedia.org)
  • HMG (Human menopausal gonadotropin). (vin.com)
  • The drugs of that era contained a mixture of the two gonadotropins (FSH and LH) in various doses, with the generic name hMG (human menopausal gonadotropin) and were commercially available with the names Pergonal, Humegon, Pergogreen, Humegon FD. (com.gr)
  • Menopur is the newest and the only available form of human menopausal gonadotropin that has been purified further to minimize side effects and can be injected under the skin (subcutaneous) or into the muscle (intramuscular). (laivfclinic.com)
  • An additional objective was to determine the effects of a heterologous vaccination strategy against gonadotropin releasing hormone on estrus behavior and cyclicity in mares using an adenoviral vectored gonadotropin releasing hormone vaccine to prime, and a protein based gonadotropin releasing hormone vaccine to boost. (auburn.edu)
  • During phase one, treatment mares (n=5) were vaccinated twice, 4 weeks apart, with an adenoviral vectored gonadotropin releasing hormone vaccine. (auburn.edu)
  • During phase two, mares that had been vaccinated during phase one (previous ovulatory season) were administered a single vaccination using a quarter of the labeled dose (sub-effective) of a protein based gonadotropin releasing hormone vaccine (100 µg protein conjugate per quarter of the labeled dose: Equity® Oestrous Control Vaccine, Zoetis, Australia). (auburn.edu)
  • Two naïve mares (protein vaccine control mares) received an equivalent dose of the protein based gonadotropin releasing hormone vaccine to determine if the 100 µg protein conjugate dose was sub-effective for suppression of cyclicity and estrus. (auburn.edu)
  • Gonadotropin receptors are embedded in the surface of the target cell membranes and coupled to the G-protein system. (wikipedia.org)
  • In patients with ovarian tumors which possess gonadotropin receptors, relatively high estraiol (E_2) and progesterone (P_4) concentrations were found in peripheral or ovarian venous blood. (nii.ac.jp)
  • The results suggest that gonadotropins may play a role in the growth and differentiation of a certain type of human ovarian neoplasms. (nii.ac.jp)
  • Publications] Nakano R: 'Localization of gonadotropin binding sitesin human ovarian neoplasus' Am J Obstet Gynecol. (nii.ac.jp)
  • Publications] Yamoto M: 'Gonadotropin receptorrs in human ovarian fobbicles and corpora butea throughout the meustrual cycle' Horm Res. (nii.ac.jp)
  • The opioid peptide leucine-enkephalin disrupts seasonal and gonadotropin-induced ovarian recrudescence in the gecko Hemidactylus frenatus. (bvsalud.org)
  • Gonadotropins, Equine" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (jefferson.edu)
  • This graph shows the total number of publications written about "Gonadotropins, Equine" by people in this website by year, and whether "Gonadotropins, Equine" was a major or minor topic of these publications. (jefferson.edu)
  • Below are the most recent publications written about "Gonadotropins, Equine" by people in Profiles. (jefferson.edu)
  • The authors suggest that the effects of this high chemical dose do not arise due to the potency of its estrogenic activity, but rather through a direct effect on the ovary as sufficient exogenous gonadotropins were available to simulate ovulation. (cdc.gov)
  • Like other gonadotropins, it can be extracted for the urine of a pregnant person or produced from cultures of genetically modified cells using DNA technology. (prospecbio.com)
  • HL is secreted by the pituitary galnda response to the hypothalamus to release another hormone, gonadotropin hormone. (anabolik-shop.com)
  • Given that an agent is introduced exogenously mimic HL, negative feedback hypothalamus sends a signal to stop production of the hormone gonadotropin, and implicitly that of HL. (anabolik-shop.com)
  • When androgen levels in the body decreases, Clomid or Nolvadex will lower estrogenic response steroidial inducing a deficit that will signal the hypothalamus to release gonadotropin hormone. (anabolik-shop.com)
  • Ovulatory response of chlordecone (Kepone)-exposed mice to exogenous gonadotropins. (cdc.gov)
  • The ability of the murine ovary to ovulate in response to exogenous gonadotropins following a prolonged exposure of virgin female CD-1- mice to chlordecone (143500) was evaluated. (cdc.gov)
  • The drugs that are available are the recombinant and the urinary gonadotropins. (com.gr)
  • Recombinant DNA technology has allowed the production of gonadotropins separately in the laboratory, known as recombinant FSH (rFSH) and LH (rLH). (laivfclinic.com)
  • Publications] Nakano R: 'Binding sites for gonadotropins in human postmenopausal ovaries' Obstet Gynecol. (nii.ac.jp)
  • the alpha sub unit structure is common to other gonadotropins, for example luteinising hormone, but the beta sub unit of 145 amino acids is unique to hCG. (ibms.org)
  • For many decades, gonadotropins that were used in assisted reproduction came from the urine of postmenopausal women. (com.gr)
  • The gonadotropins act on the gonads, controlling gamete and sex hormone production. (wikipedia.org)
  • Nowadays, there are still urinary gonadotropins available for intramuscular or subcutaneous injection with the commercial names Altermon, Metrodin-HP and Menogon. (com.gr)
  • Store Gonadotropin 5000 IU at 20°C-25°C (68°F-77°F). Protect from light. (bodypharm.biz)
  • humani horionski gonadotropin (hCG), luteinizirajući hormon (LH), folikulostimulišući hormon (FSH), i tireostimulišući hormon (TSH) su dimeri koji se sastoje od alfa i beta podjedinica, koje su nekovalentno vezane. (wikipedia.org)
  • There are various preparations of gonadotropins for therapeutic use, mainly as fertility medication. (wikipedia.org)
  • Diamond, MP & Singh, M 2012, ' Use of gonadotropins for initiation of singleton gestations in non-assisted reproductive technology cycles ', Fertility and sterility , vol. 97, no. 4, pp. 810-812. (elsevierpure.com)