Circulating platelet products in unstable angina pectoris.
Author(s) -
M Sobel,
E W Salzman,
G C Davies,
Robert I. Handin,
Jon Sweeney,
Jeannette Ploetz,
G Kurland
Publication year - 1981
Publication title -
circulation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.795
H-Index - 607
eISSN - 1524-4539
pISSN - 0009-7322
DOI - 10.1161/01.cir.63.2.300
Subject(s) - medicine , unstable angina , platelet , platelet factor 4 , beta thromboglobulin , cardiology , radioimmunoassay , thromboxane b2 , angina , coagulation , platelet activation , arachidonic acid , thromboxane a2 , endocrinology , coronary heart disease , myocardial infarction , biochemistry , chemistry , enzyme
In 19 patients with unstable angina pectoris at rest, plasma levels of the platelet-derived proteins beta-thromboglobulin and platelet factor 4 were significantly elevated in blood samples obtained during or within 4 hours after episodes of angina, but were usually normal during quiescent intervals. Plasma levels of the arachidonic acid metabolite thromboxane B2 were less clearly related to angina, and there was no association of angina with levels of the coagulation product fibrinopeptide A. This demonstration of an association of platelet activation and secretion with unstable angina pectoris by radioimmunoassay of circulating platelet constituents offers a new approach to assessment of therapy in ischemic heart disease and suggests that agents that alter platelet function should be evaluated in patients with unstable angina.
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