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lactogen

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lactogen /lac·to·gen/ (lak´to-jen) any substance that enhances lactation.
human placental lactogen  a hormone secreted by the placenta; it has lactogenic, luteotropic, and growth-promoting activity, and inhibits maternal insulin activity.

lac·to·gen (lkt-jn, -jn)
n.
An agent that stimulates lactation.

lactogen
[lak′təjən]
Etymology: L, lac + Gk, genein, to produce
a drug or other substance that enhances the production and secretion of milk. lactogenic, adj.

lactogen [lak´to-jen]
any substance that enhances lactation.
human placental lactogen (HPL) (hPL) a hormone secreted by the placenta, which disappears from the blood immediately after delivery. It has lactogenic, luteotropic, and growth-promoting activity, and inhibits maternal insulin activity during pregnancy.

lactogen
any substance that enhances lactation.


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It is localized in q22-24 area of chromosome 17 and closely related to placental lactogen also called human chorionic somatomammotropin.
The chorion of the placenta would be triggered to secrets human chorionic gonadtropin (hCG) and human chorionic somatomammotropin (hCS) aka (hPL) human placental lactogen, Inhibin and after three or four weeks it would begin secreting estrogens and after six weeks it would start secreting progesterone.
Serologic evaluation has not proven definitive as maternal serum concentrations of human chorionic gonadotropin, human placental lactogen, progesterone, estriol, estradiol, as well as maternal serum alpha fetoprotein (MSAFP) may not differ from that of a normal pregnancy.
 
 
 
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