title: Inhibition of tissue-type plasminogen activator in plasma of women using oral contraceptives and in normal women during a menstrual cycle.
abstract: Tissue-type plasminogen activator (t-PA) inhibition in plasma was assessed in 15 normal women and in 10 women using oral contraceptives (OC) containing 30 micrograms ethinyl oestradiol and 150 micrograms levo-norgestrel. The levels of t-PA inhibition were significantly lower in the OC group with marked fluctuations related to the hormone cycle. Normal women had only minor fluctuations.
mesh_terms: D000328:Adult; D003277:Contraceptives, Oral, Combined / Q000494:pharmacology*; D005260:Female; D005342:Fibrinolysis / Q000187:drug effects; D006023:Glycoproteins / Q000097:blood*; D006801:Humans; D008597:Menstrual Cycle; D015849:Plasminogen Inactivators; D010959:Tissue Plasminogen Activator / Q000037:antagonists & inhibitors*
chemical_list: D003277:Contraceptives, Oral, Combined; D006023:Glycoproteins; D015849:Plasminogen Inactivators; D010959:Tissue Plasminogen Activator