title: First-trimester serum prolactin levels in normal and complicated pregnancies.
abstract: Subfractional activities and some properties of beta-glucuronidase were studied at different ontogenetic stages of the human placenta. Maximum activity was localized in normal pregnancies rose from 13.58 ng/ml in the 6th week to 52.46 ng/ml in the 15th week of gestation with marked individual variability. In tubal pregnancies, serum hPRL was low and did not increase over a period of 3--6 weeks. In women with spontaneous abortion, hPRL levels often were in the normal range with a drop only immediately prior to expulsion of the fetus. In patients with missed abortion the drop in serum prolactin levels seemed to coincide with the death of the conceptus.
mesh_terms: D000030:Abortion, Missed / Q000097:blood; D000022:Abortion, Spontaneous / Q000097:blood; D005260:Female; D006801:Humans; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011271:Pregnancy, Ectopic / Q000097:blood; D011388:Prolactin / Q000097:blood*
chemical_list: D011388:Prolactin