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Plasminogen/plasmin influence on platelet aggregation

Plasminogen/plasmin influence on platelet aggregation

Aim. Determination of the influence of Glu- and Lys-plasminogen/ plasmin on the platelet aggregation induced by different agonists. Methods. Platelet aggregometry. Spectrophotometry. Results. We have shown the inhibitory effect of Lys-plasminogen on human platelet aggregation. The pro-enzyme action...

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Bibliographic Details
Main Authors: Roka-Moya, Y.M., Zhernossekov, D.D., Grinenko, T.V.
Format: Article
Language:English
Published: Інститут молекулярної біології і генетики НАН України 2012
Series:Вiopolymers and Cell
Subjects:
Structure and Function of Biopolymers
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/156892
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Summary:Aim. Determination of the influence of Glu- and Lys-plasminogen/ plasmin on the platelet aggregation induced by different agonists. Methods. Platelet aggregometry. Spectrophotometry. Results. We have shown the inhibitory effect of Lys-plasminogen on human platelet aggregation. The pro-enzyme action is related to the second wave of aggregation. The inhibitory effect of Lys-plasminogen possesses dosedependent manner in case of thrombin-induced aggregation. The inhibitory effect of pro-enzyme with ristocetin as an inductor has not been observed. Glu-plasminogen and plasmin do not influence on platelet aggregation under studied conditions. A serine protease inhibitor aprotinin does not change the inhibitory effect of Lys-plasminogen. Conclusions. The results proved the inhibitory effect of Lys-plasminogen on thrombin- and collagen-induced platelet aggregation. The absence of inhibitory effect of Lys-plasminogen in the case of ristocetin-induced aggregation leads us to conclusion, that GP Ib/IX is not involved into the inhibited aggregation pathway. The unchanged inhibitory effect of Lys-plasminogen in the presence of aprotinin excludes plasmin participation in the inhibitory phenomenon. Keywords: platelet aggregation, plasminogen, plasmin.

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