Biomaterial Database

Origin of prostanoids in human amniotic fluid: the fetal kidney as a source of amniotic fluid prostanoids. 1983

M L Casey, and S I Cutrer, and M D Mitchell

The present study was designed to investigate the origin of prostanoids that are present in amniotic fluid. We evaluated the concentration of prostaglandins in fetal urine that was obtained from newborn infants immediately after delivery either before or after the onset of spontaneous labor or after oxytocin-induced labor. We found that the levels of prostaglandin (PG) E2, PGF2 alpha, 6-keto-PGF1 alpha, and 13, 14-dihydro-15-keto-PGF2 alpha in the fetal urine of newborn infants delivered after the spontaneous onset of labor and after oxytocin-induced labor were significantly greater than the levels in the fetal urine of newborn infants delivered before the spontaneous onset of labor. We conclude that one source of the prostanoids present in amniotic fluid is fetal urine, and, thence, fetal kidneys, and that labor, whether spontaneous or induced, caused increased excretion of prostanoids in fetal urine.

UI	MeSH Term	Description	Entries
D007231	Infant, Newborn	An infant during the first 28 days after birth.	Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D007668	Kidney	Body organ that filters blood for the secretion of URINE and that regulates ion concentrations.	Kidneys
D007743	Labor, Obstetric	The repetitive uterine contraction during childbirth which is associated with the progressive dilation of the uterine cervix (CERVIX UTERI). Successful labor results in the expulsion of the FETUS and PLACENTA. Obstetric labor can be spontaneous or induced (LABOR, INDUCED).	Obstetric Labor
D007751	Labor, Induced	Artificially induced UTERINE CONTRACTION.	Induced Labor,Induction of Labor,Labor Induced,Labor Induction,Induced, Labor,Induction, Labor,Inductions, Labor,Labor Inductions
D010121	Oxytocin	A nonapeptide hormone released from the neurohypophysis (PITUITARY GLAND, POSTERIOR). It differs from VASOPRESSIN by two amino acids at residues 3 and 8. Oxytocin acts on SMOOTH MUSCLE CELLS, such as causing UTERINE CONTRACTIONS and MILK EJECTION.	Ocytocin,Pitocin,Syntocinon
D011247	Pregnancy	The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.	Gestation,Pregnancies
D011453	Prostaglandins	A group of compounds derived from unsaturated 20-carbon fatty acids, primarily arachidonic acid, via the cyclooxygenase pathway. They are extremely potent mediators of a diverse group of physiological processes.	Prostaglandin,Prostanoid,Prostanoids
D002585	Cesarean Section	Extraction of the FETUS by means of abdominal HYSTEROTOMY.	Abdominal Delivery,Delivery, Abdominal,C-Section (OB),Caesarean Section,Postcesarean Section,Abdominal Deliveries,C Section (OB),C-Sections (OB),Caesarean Sections,Cesarean Sections,Deliveries, Abdominal
D005260	Female		Females
D005333	Fetus	The unborn young of a viviparous mammal, in the postembryonic period, after the major structures have been outlined. In humans, the unborn young from the end of the eighth week after CONCEPTION until BIRTH, as distinguished from the earlier EMBRYO, MAMMALIAN.	Fetal Structures,Fetal Tissue,Fetuses,Mummified Fetus,Retained Fetus,Fetal Structure,Fetal Tissues,Fetus, Mummified,Fetus, Retained,Structure, Fetal,Structures, Fetal,Tissue, Fetal,Tissues, Fetal