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Prolactin (PRL), also known as lactotropin and mammotropin, is a protein best known for its role in enabling mammals to produce milk. It is influential in over 300 separate processes in various vertebrates, including humans. [5] Prolactin is secreted from the pituitary gland in response to eating, mating, estrogen treatment, ovulation and ...
A prolactin cell (also known as a lactotropic cell, epsilon acidophil, lactotrope, lactotroph, mammatroph, mammotroph) is a cell in the anterior pituitary which produces prolactin (a peptide hormone) in response to hormonal signals including dopamine (which is inhibitory), thyrotropin-releasing hormone and estrogen (especially during pregnancy), which are stimulatory.
The production and release of the neuropeptide VIP is centralized in the hypothalamic and extrahypothalamic regions of the brain and from there it is able to modulate the release of prolactin secretion. [24] Once secreted from the pituitary gland, prolactin can increase many behaviors such as parental care and aggression.
High levels of prolactin during pregnancy and breastfeeding also increase insulin resistance, increase growth factor levels (IGF-1) and modify lipid metabolism in preparation for breastfeeding. During lactation, prolactin is the main factor maintaining tight junctions of the ductal epithelium and regulating milk production through osmotic balance.
Cabergoline is primarily used to treat disorders related to high levels of the hormone prolactin, which is produced by the pituitary gland. In women, prolactin is the hormone that regulates milk ...
Prolactin is one of peptide hormone that is produced and released by the anterior pituitary gland, as well as the brain, mammary gland, skin, and prostate. [28] [29] Prolactin is essential for the initiation of lactation, the composition or macronutrients in milk and milk synthesis. [30]
Prolactin-releasing peptide (PrRP) is a peptide hormone that in humans is encoded by the PRLH gene. [5] PrRP stimulates prolactin (PRL) release and regulates the expression of prolactin through binding to the prolactin-releasing peptide receptor (GPR10).
Prolactin, produced by the pituitary gland, is essential for initiating and maintaining milk production. Its levels increase during pregnancy to prepare the breasts for milk production and remain high after childbirth to continue supporting breastfeeding.