title: Prostacyclin formation by the pregnant human myometrium.
abstract: Human myometrium taken between 15 and 42 weeks of pregnancy released a material in vitro which possessed anti-aggregatory activity. This material parallelled authentic prostacyclin in this action; it possessed a similar stability at alkaline pH and generation of activity was inhibited by indomethacin. Production of the prostacyclin-like material by the myometrium was similar at weeks 15 and 38 of pregnancy but a 4-fold increase in synthesis had occurred by 40 weeks. It is suggested this increase may be important for parturition.
mesh_terms: D000244:Adenosine Diphosphate / Q000037:antagonists & inhibitors / Q000494:pharmacology; D011464:Epoprostenol / Q000096:biosynthesis* / Q000494:pharmacology; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D009215:Myometrium / Q000378:metabolism*; D010974:Platelet Aggregation / Q000187:drug effects; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D011453:Prostaglandins / Q000096:biosynthesis*; D014599:Uterus / Q000378:metabolism*
chemical_list: D011453:Prostaglandins; D000244:Adenosine Diphosphate; D011464:Epoprostenol