Thromb Haemost 1995; 74(06): 1578-1582
DOI: 10.1055/s-0038-1649985
Original Article
Animal Models
Schattauer GmbH Stuttgart

Endotoxin-Induced Intravascular Coagulation in Rabbits:Effect of Tissue Plasminogen Activator vs Urokinase on PAI Generation, Fibrin Deposits and Mortality

Authors

  • M J Paloma

    The Hematology Service, University Clinic of Navarra, School of Medicine University of Navarra, Pamplona, Spain
  • J A Páramo

    The Hematology Service, University Clinic of Navarra, School of Medicine University of Navarra, Pamplona, Spain
  • E Rocha

    The Hematology Service, University Clinic of Navarra, School of Medicine University of Navarra, Pamplona, Spain
Further Information

Publication History

Received 14 November 1994

Accepted after resubmission 18 August 1995

Publication Date:
27 July 2018 (online)

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Summary

We have evaluated the effect of plasminogen activators (t-PA and urokinase) on an experimental model of disseminated intravascular coagulation (DIC) in rabbits by injection of 20 μg/kg/h of E. coli lipopolysaccharide during 6 h t-PA (0.2 mg/kg and 0.7 mg/kg), urokinase (3000 U/kg/h) and saline (control) were given simultaneously with endotoxin. Results indicated that urokinase and low dose of t-PA significantly reduced the increase of plasminogen activator inhibitor (PAI) activity observed 2 h after endotoxin (p <0.001). High t-PA dose also diminished the PAI levels at 6 h (p <0.0001). A significant reduction of fibrin deposits in kidneys was observed in both t-PA treated groups as compared with findings in the group of rabbits infused with saline solution (p <0.005), whereas urokinase had no significant effect on the extent of fibrin deposition. Finally, the mortality rate in the control group (70%) was reduced to 50% in rabbits receiving high doses of t-PA. In conclusion, treatment with t-PA resulted in reduced PAI generation, fibrin deposits and mortality in endotoxin-treated rabbits