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  • Title: Pharmacokinetic and hemostatic properties of the recombinant plasminogen activator bm 06.022 in healthy volunteers.
    Author: Martin U, von Möllendorff E, Akpan W, Kientsch-Engel R, Kaufmann B, Neugebauer G.
    Journal: Thromb Haemost; 1991 Nov 01; 66(5):569-74. PubMed ID: 1725068.
    Abstract:
    In a randomized, single-blind, placebo-controlled, cross-over Phase-I study pharmacokinetic and hemostatic properties of BM 06.022 were investigated in seven healthy, male human volunteers. The novel recombinant plasminogen activator BM 06.022 consists of the kringle 2 domain and the protease domain of human t-PA and is unglycosylated due to its expression in Escherichia coli cells. Vehicle or 6 MU (= 10.4 mg) BM 06.022 was administered as a single i.v. bolus injection of 10 ml over 2 min. BM 06.022 was well tolerated. Fibrinogen levels and clotting times remained unchanged at baseline levels after 6 MU BM 06.022; plasminogen and alpha 2-antiplasmin (collected on chloromethylketone) decreased maximally to 83 +/- 1% and 64 +/- 3%, respectively, of baseline. D-dimers and fibrinogen degradation products increased to 1,006 +/- 234 ng/ml and 555 +/- 155 ng/ml, respectively, after BM 06.022. Half-life of BM 06.022-activity was 11.2 +/- 0.4 min and of antigen was 13.9 +/- 0.7 min, followed by a terminal half-life only for antigen of 173 +/- 33 min. Plasma clearance of BM 06.022 was 371 +/- 13 ml/min for activity and 183 +/- 15 ml/min for antigen. Thus, BM 06.022 is not fibrinogenolytic at 6 MU and is a fibrinolytic agent with a longer half-life than t-PA.
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