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Reproductive Hormones Overview - Anatomy & Physiology (view source)
Revision as of 21:41, 7 October 2011
, 21:41, 7 October 2011→Equine Chorionic Gonadotrophin (eCG)
===Equine Chorionic Gonadotrophin (eCG)===
===Equine Chorionic Gonadotrophin (eCG)===
eCG is a form of glycoprotein that is produced from chorionic girdle cells. In females the primary target organ are the ovaries where they faciliate the formation of the accessory corpora lutea.
eCG is a form of glycoprotein that is produced from chorionic girdle cells. Chorionic tissues in horses as well as primates also form hormones. eCG is formed in foetal endocrine cells and is found within the maternal circulation. eCG is thought to play a similar role in horses to hCG in primates in terms of pregnancy recognition. Foetal production of eCG is highest between 30-70 days of pregnancy. The primary target of eCG are the ovaries where they faciliate the formation of the accessory corpora lutea and ensure that progesterone production is maintained.
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eCG is also thought to stimulate follicular growth and ovulation in the horse. If eCG is given to other species it acts in a similar manner to FSH and therefore eCG is often used to induce super-ovulation in species where a large number of oocytes are required for embryo transfer.
===Placental Lactogen (PL)===
===Placental Lactogen (PL)===
Placental lactogen is a form of protein that is produced by the placenta. It's primary target tissue are the mammary glands where they stimulate milk production.
Placental lactogen is a form of protein that is produced by the placenta. It's primary target tissue are the mammary glands where they stimulate milk production.