Gonadotropin-releasing hormone in milk.
The hypothalamic hormone gonadotropin-releasing hormone (GnRH) has been found in milk of man, cow, and rat. Radioimmunoassays of acidified milk indicate concentrations of GnRH ranging between 0.1 and 3 nanograms per milliliter. Multistep extractions, followed by electrophoresis, reveal gonadotropin-releasing activity in the fraction that comigrates with the GnRH-marker. A second hypothalamic hormone, thyrotropin-releasing hormone, is present in milk at a much lower concentration. "Milk -GnRH" may influence the secretion of the gonadotropic hormones in neonates.
D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism; D001681:Biological Assay; D002417:Cattle; D005260:Female; D007987:Gonadotropin-Releasing Hormone / Q000032:analysis* / Q000378:metabolism; D006801:Humans; D008892:Milk / Q000032:analysis*; D008895:Milk, Human / Q000032:analysis*; D051381:Rats
D007987:Gonadotropin-Releasing Hormone