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DOI: 10.1055/s-0038-1661109
Evidence for the Occurrence of a Fast-Acting Inhibitor for Tissue-Type Plasminogen Activator in Human Plasma[*]
Publikationsverlauf
Received 22. August 1983
Accepted 10. April 1984
Publikationsdatum:
19. Juli 2018 (online)
![](https://www.thieme-connect.de/media/10.1055-s-00035024/198403/lookinside/thumbnails/10-1055-s-0038-1661109-1.jpg)
Summary
Human plasma contains a fast-acting t-PA inhibitor, which is not identical with α2-antiplasmin or α2-macroglobulin. The concentration of this inhibitor in normal plasma is highly variable, much lower than that of known plasma protease inhibitors, and in the range of physiologically occurring plasma concentrations of t- PA (0-2 IU/ml).
The inhibitor binds to concanavalin A-Sepharose, is rather stable when heated, is not precipitated in euglobulin fractions and probably does not originate from platelets. The inhibitor seems to form a 190 Kd complex with t-PA. The relation between this plasma inhibitor and the recently discovered endothelial cell inhibitor is not yet clear.
* Part of this work has been presented at the IXth International Congress on Thrombosis and Haemostasis, 1983. An abstract appeared as ref 6.
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