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Deep venous thrombosis in the baboon: an experimental model
T W Wakefield1, S K Wrobleski, M S Sarpa
1Department of Surgery, University of Michigan Medical Center, Ann Arbor 48109-0329.
Journal of Vascular Surgery
|November 1, 1991
Summary
Researchers developed a new animal model for deep venous thrombosis (DVT) by inhibiting protein C. This model, using baboons, successfully replicates DVT, aiding future thrombosis research.
Area of Science:
- Vascular Biology
- Hematology
- Animal Models
Background:
- Deep venous thrombosis (DVT) lacks adequate experimental models for laboratory study.
- Understanding DVT pathogenesis requires reliable in vivo systems.
Purpose of the Study:
- To establish a novel and reproducible animal model for deep venous thrombosis.
- To investigate DVT development through protein C inhibition, venous stasis, and injury.
Main Methods:
- Ten adolescent baboons were used, with experimental animals receiving a monoclonal antibody to protein C (HPC4) and tumor necrosis factor.
- Venous stasis was induced using a thigh blood pressure cuff.
- Hemodynamic, hematologic, duplex imaging, and venography parameters were monitored throughout the study.
Main Results:
- Experimental animals developed left iliac vein thrombosis extending into the inferior vena cava.
- Control animals receiving saline did not develop thrombosis.
- Thrombus formation, timing, and extent showed a dose-dependent relationship in stasis-induced animals.
Conclusions:
- A reproducible model for deep venous thrombosis involving protein C inhibition has been established.
- This model facilitates further laboratory investigations into venous thrombosis.
- The model demonstrated dose-dependent thrombus formation and associated hematologic changes.