Related Experiment Videos
Enhanced streptokinase-induced thrombolysis using heparin in a rabbit model
R L Kolts1, H S Maki, M E Kuehner
1Department of Surgery, Marshfield Clinic, WI 54449.
Summary
Adding heparin enhances clot lysis when combined with streptokinase in a rabbit model. This combination therapy proved more effective than streptokinase alone, with no significant increase in adverse systemic effects.
Area of Science:
- Cardiovascular Research
- Thrombosis and Hemostasis
Background:
- Streptokinase is a thrombolytic agent used to dissolve blood clots.
- Heparin is an anticoagulant that may potentiate thrombolysis.
Purpose of the Study:
- To investigate the efficacy of combining heparin with streptokinase for clot lysis in a rabbit model.
- To assess the safety and systemic effects of combined heparin-streptokinase therapy.
Main Methods:
- A rabbit aortic clot model was established and aged for 1 hour.
- Rabbits received either streptokinase alone or streptokinase plus heparin for 5 hours.
- Clot lysis percentage and premature death due to clot propagation were recorded.
Main Results:
- Combined heparin and streptokinase resulted in 70% clot lysis, compared to 30% with streptokinase alone.
- 10 out of 11 rabbits in the combination group achieved >50% lysis, versus 4 out of 15 in the streptokinase-only group.
- No statistically significant difference in hypofibrinogenemia or increased mortality was observed between groups.
Conclusions:
- Heparin potentiation of streptokinase-induced thrombolysis is effective in a rabbit model.
- Combination therapy demonstrated superior clot lysis compared to streptokinase alone.
- The combination therapy appears to have comparable systemic effects to streptokinase monotherapy.