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2796 14714 Ensembl ENSG00000147437 ENSMUSG00000015812 UniProt P01148 P13562 RefSeq (mRNA) NM_001083111 NM_000825 NM_008145 RefSeq (protein) NP_000816 NP_001076580 NP_032171 Location (UCSC) Chr 8: 25.42 – 25.42 Mb Chr 14: 67.98 – 67.99 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Gonadotropin-releasing hormone (GnRH) is a releasing hormone responsible for the release of ...
Exceptionally high levels of estradiol induce hypothalamic production of progesterone, which stimulates elevated GnRH secretion, triggering a surge in LH. [17] The increase in LH production only lasts for 24 to 48 hours.
Samoyeds can be affected by basement membrane disease of the kidneys. It is inherited through the X chromosome and is therefore more severe in affected male dogs. Findings in male dogs include the presence of protein and glucose in the urine and the inability to concentrate urine, and progression to kidney failure by the age of 9 months and death by 16 months. [3]
The gonadotropin-releasing hormones (GnRH) (gonadoliberin) [1] are a family of peptides that play a pivotal role in reproduction. The main function of GnRH is to act on the pituitary to stimulate the synthesis and secretion of luteinizing and follicle-stimulating hormones, but GnRH also acts on the brain, retina, sympathetic nervous system, gonads, and placenta in certain species.
Female dogs bleed during estrus, which usually lasts from 7–13 days, depending on the size and maturity of the dog. Ovulation occurs 24–48 hours after the luteinizing hormone peak, which occurs around the fourth day of estrus; therefore, this is the best time to begin breeding.
Most experiments on GnRH and LH release have been focused on spontaneous ovulators, though there have been studies completed on some induced ovulators (e.g., rabbits, ferrets). From this, it appears that norepinephrine facilitates GnRH release in the rabbit and ferret and the locus coereuleus which is the part of the brain involved in conveying ...
GnRH binds to gonadotropin-releasing hormone receptors (GnRHR), which is a G-protein coupled receptor, and signals the oscillation of calcium that hyperpolarizes gonadotropic cell membranes. [6] This oscillation of calcium ions occurs through the resultant signaling cascade of the GnRH binding to the GnRHR in the plasma membrane of the gonadotroph.
Unlike other GnRH agonists, which are mainly used to inhibit luteinizing hormone and follicle-stimulating hormone by their ultimate downregulation of the pituitary gland, Deslorelin is primarily used for the initial flare effect upon the pituitary, and its associated surge of LH secretion. Suprelorin is a slowly releasing deslorelin implant ...