Formation of an Intermediate in Prostaglandin Biosynthesis and Its Association with the Platelet Release Reaction

Authors:
  • JSJ. B. Smith
    J. B. Smith
  • CICarol Ingerman
    Carol Ingerman
  • JKJ. J. Kocsis
    J. J. Kocsis
  • MSM. J. Silver
    M. J. Silver

Abstract
A compound that could be converted to prostaglandin F2α by mild chemical reduction was formed by human platelets in response to arachidonic acid, collagen, or L-epinephrine. It was present in maximal amounts at about 1 min after addition of arachidonic acid or collagen to platelet-rich plasma. Its initial formation appeared to precede platelet aggregation by these agents and was closely correlated with the release of adenine nucleotides and radioactive 5-hydroxytryptamine from platelets. Moreover, the compound was itself found outside the platelets. This compound is probably an endoperoxide intermediate in prostaglandin biosynthesis and may be a trigger for the platelet release reaction.

This publication has 17 references indexed in Scilit: