Baboon models of E.coli sepsis: role of phospholipid microparticles in disseminated intravascular Coagulation

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Abstract

The experiences with primate models of E.coli sepsis with emphasis on the responses of the hemostatic system and the mechanism of these responses with emphasis on the role of phospholipid microparticles in mediating disseminated intravascular coagulation, (DIC) are discribed. Understanding the principles of how the hemostatic system responds to inflammatory stress depends on viewing this system as a collection of mediator and regulator factors. They are integrated into a balanced system consisting of four functional quadrants. Depending on circumstances this system is designed to control either the patency or the integrity of the cardiovascular system.

About the authors

F. B. Taylor Jr.

Medical Research Foundation

Author for correspondence.
Email: info@eco-vector.com
United States, Oklahoma

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2. Fig. 1A. The four-quadrant design of the hemostasis system is normal.

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3. Fig. 1B. Effect of vascular endothelial removal.

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4. Fig. 2A. Effect of PCa / PCFS infusion on the normal hemostatic system.

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5. Fig. 2B. Infusion of PCa / PCFS plus antibodies to protein C on the normal hemostatic system.

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6. Fig. 2C. Infusion of PCa / PCPS plus antibodies to protein C and tissue plasminogen activator.

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7. Fig. 2D. Effect of PCa / PCFS infusion followed by multiple intramuscular injections of interleukin-6 (IL-6).

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8. Fig. 3A. Effect of vein catheterization and infusion of tumor necrosis factor (TNF) plus antibodies to protein C.

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9. Fig. 3B. Effect of co-infusion of phospholipid vesicles (PCFs) on the model of deep vein thrombosis described above.

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10. Fig. 4A. Disseminated intravascular coagulation (DIC) model: description of the sequence of events and stages (I to IV) after infusion of E. coli LD100:

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11. Fig. 4B. Model of disseminated intravascular coagulation (DIC) as a response of baboons to LD100 E. coli.

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12. Fig. 5. Disseminated intravascular coagulation (DIC) as a reaction to the infusion of fXa / PCFS plus antibodies to protein C (A) and LD100 E. coli (B).

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© 1999 Taylor Jr. F.B.

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