Journal
ARTERIOSCLEROSIS THROMBOSIS AND VASCULAR BIOLOGY
Volume 26, Issue 1, Pages 41-48Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1161/01.ATV.0000193624.28251.83
Keywords
hemostasis; partial thromboplastin time; platelets; prothrombin time; tissue factor
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Funding
- NATIONAL HEART, LUNG, AND BLOOD INSTITUTE [R01HL048320] Funding Source: NIH RePORTER
- NHLBI NIH HHS [R01 HL48320] Funding Source: Medline
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The coagulation process has been conceptualized as being primarily dependent on adequate levels of the coagulation proteins. This concept was based on the clear relationship between the bleeding tendency and factor levels in hemophilia. The field is now evolving toward conceptualizing coagulation as being actively regulated by the specialized cellular components of the process. Rather than conceiving coagulation as only a cascade of proteolytic reactions, the coagulation reactions occur as overlapping steps on cell surfaces. Components of the old extrinsic' and intrinsic pathways of coagulation can be thought of as participating in the initiation and propagation of coagulation reactions, respectively. Thus, these pathways are not redundant as they are portrayed in the cascade model, but play distinct and complementary roles. Our understanding of how specific cellular features control the processes of hemostasis and thrombosis is developing rapidly. This review discusses some aspects of the cellular control of coagulation.
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