title: Postpartum decline in serum concentration of placental proteins in an abdominal pregnancy.
abstract: The alpha and the beta forms of Schwangerschaftsprotein 1 (SP1) and chorionic gonadotrophin (hCG) were measured after delivery in an abdominal pregnancy with the placenta left in situ. All three proteins declined more slowly than after normal delivery; the half-lives ranging from 6.2-6.5 days. Traces of the proteins could still be detected in the maternal circulation 9 weeks after delivery. These findings are construed as further support for the belief that the placenta plays a major role in the synthesis of these proteins.
mesh_terms: D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D005260:Female; D006801:Humans; D049590:Postpartum Period; D011247:Pregnancy; D011257:Pregnancy Proteins / Q000097:blood*; D011269:Pregnancy, Abdominal / Q000097:blood*
chemical_list: D006063:Chorionic Gonadotropin; D011257:Pregnancy Proteins