The release of B.BETA. peptides from fibrin and fibrinogen: Comparison of plasma system with purified system.:comparison of plasma system with purified system
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Release of Bβ peptides and F (g) DP from fibrin (ogen) was studied after the activation of Glu-plasminogen (Glu-plg) by urokinase (UK) in the plasma or clot and fibrinogen or fibrin. Bβ peptides or FDP were released faster from the clot than the plasma. In a purified system, FDP was released faster than FgDP after the activation of Glu-plg by UK in the presence of fibrin or fibrinogen. Release of Bβ 15-42 from purified fibrin was slower than the release of Bβ 1-42 from fibrinogen when Glu-plg was activated by UK. The presence of α2 antiplasmin (α2AP) slowed the release of Bβ 1-42 from fibrinogen, thus resulted in faster release of Bβ 15-42 in comparison to Bβ 1-42. These results indicated that Glu-plg was activated better by UK in the presence of fibrin than fibrinogen, but the release of Bβ peptides from purified fibrin and fibrinogen depended upon the presence of α2AP. Since fibrin prevented inactivation of plasmin by α2AP, the presence of α2AP inactivated plasmin in the fluid phase.
- 一般社団法人 日本血栓止血学会の論文
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