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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. GnRH is a tropic peptide hormone synthesized and released from GnRH neurons within the hypothalamus. The peptide belongs to gonadotropin-releasing hormone family.
Progonadoliberin-2 is a protein that in humans is encoded by the GNRH2 gene. [1] [2] [3] The protein encoded by this gene is a preproprotein that is cleaved to form a secreted 10 aa peptide hormone, QHWSHGWYPG. [4] The secreted decapeptide regulates reproduction in females by stimulating the secretion of both luteinizing- and follicle ...
GnRH neurons, or gonadotropin-releasing hormone expressing neurons, are the cells in the hypothalamic infundibular nucleus in the brain that control the release of reproductive hormones from the pituitary. [1] These brain cells control reproduction by secreting GnRH into the hypophyseal portal capillary bloodstream, so are sometimes referred to ...
The hypothalamus is located in the brain and secretes GnRH. [1] GnRH travels down the anterior portion of the pituitary via the hypophyseal portal system and binds to receptors on the secretory cells of the adenohypophysis. [2] In response to GnRH stimulation these cells produce LH and FSH, which travel into the blood stream. [3]
Signaling Pathway in Gonadotropic Cell Initiated by GnRH Binding to GnRHR. One factor that has an important effect on this electrical activity of gonadotrophs is the gonadotropin-releasing hormone (GnRH). GnRH is a hormone released by the hypothalamus, and it is responsible for signaling gonadotrophs to release gonadotropins FSH and LH.
The GnRHR is expressed on the surface of pituitary gonadotrope cells as well as lymphocytes, breast, ovary, and prostate. This receptor is a 60 kDa G protein-coupled receptor and resides primarily in the pituitary and is responsible for eliciting the actions of GnRH after its release from the hypothalamus . [ 2 ]
A gonadotropin-releasing hormone agonist (GnRH agonist) is a type of medication which affects gonadotropins and sex hormones. [1] They are used for a variety of indications including in fertility medicine and to lower sex hormone levels in the treatment of hormone-sensitive cancers such as prostate cancer and breast cancer, certain gynecological disorders like heavy periods and endometriosis ...
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