In vitro,
urokinase (UK) at 25, 35, 40, 45, 60 kU/L and
FIIa at 0.08, 0.23, 0.4, 0.5, and 0.7 g/L resulted an equivalent clot lysis (20%, 40%, 50%, 60%, and 80%). UK at 25 to approximately 60 kU/L induced 27.3%+/-3.6%, 35.2%+/-2.3%, 39.3%+/-2.4%, 44.2%+/-4.6%, and 51.1%+/-1.2%
fibrinogen degradation. But
FIIa at 0.08 approximately -0.7 g/L induced 95.4%+/-0.3%, >95.6%, >95.6%, >95.6%, >95.6%
fibrinogen degradation respectively. In vivo, UK 40 kU/kg and
FIIa 1.0 mg/kg reduced the weight of residual
thrombus to 9.0+/-2.5 mg and 7.8+/-3.5 mg compared with negative control group (30.0+/-5.4 mg). But the
fibrinogen degradation rate after UK 40 kU/kg and
FIIa 1.0 mg/kg treatment was 24.4%+/-6.2% and 4.1%+/-7.8%, respectively (P<0.05, n=6). The order of the lysis speed after UK 125 kU/L treatment was platelet poor plasma (PPP) clots>the whole
blood clots>platelet rich plasma (PRP) clots. The sequence for
FIIa 0.4 g/L was PRP >PPP >whole
blood clots.
CONCLUSION: