title: Interaction between prostaglandin E1 and nitric oxide (NO).
abstract: A synergistic antiplatelet effect between prostaglandin I2 (PGI2), a cAMP-stimulator, and nitric oxide (NO), a cGMP-stimulator, has been described. Data on a PGE1-NO interaction, however, are lacking so far. We therefore examined the question in healthy volunteers, whether a similar synergism exist between PGE1 and NO on human platelets in vitro. Each of the substances alone caused a dose-dependent inhibition of ADP-induced platelet aggregation, PGE1 (1ng/mlPRP) reduced platelet aggregation by 27.8 +/- 14.6%, NO (0.3%) by 26.7 +/- 25.5%. The combination of these compounds caused an additive effect resulting in a reduction of 40.6 +/- 23.5%. The findings indicate that PGE1 (like PGI2) and NO have a synergistic antiplatelet action. The concomitant treatment with both compounds offers an interesting concept for clinical therapy.
authors.affiliation: Wilhelm Auerswald Atherosclerosis Research Group (ASF) Vienna, Austria.
authors.forename: R
authors.initials: R
authors.lastname: Katzenschlager
authors.forename: K
authors.initials: K
authors.lastname: Weiss
authors.forename: W
authors.initials: W
authors.lastname: Rogatti
authors.forename: M
authors.initials: M
authors.lastname: Stelzeneder
authors.forename: H
authors.initials: H
authors.lastname: Sinzinger
mesh_terms: D000328:Adult; D000527:Alprostadil / Q000494:pharmacology*; D004357:Drug Synergism; D005260:Female; D006801:Humans; D066298:In Vitro Techniques; D008297:Male; D009569:Nitric Oxide / Q000494:pharmacology*; D010975:Platelet Aggregation Inhibitors / Q000494:pharmacology*
chemical_list: D010975:Platelet Aggregation Inhibitors; D009569:Nitric Oxide; D000527:Alprostadil