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The Mechanism of Clot Retraction

  • Isaac Cohen

Abstract

Nearly 2000 years elapsed between the first observation of blood clotting by Aristotle and that of Hewson (1772) on the subsequent retraction of the spontaneously formed blood clot. The recognition of the crucial role of platelets in the phenomenon of clot retraction had to await the promotion of platelets from the undignified status of being derived from red cells or chyle (Donné, 1842) to that of a glorified element with its own megakaryocytic parenthood (Wright, 1906). The early observation that clots formed by the blood of severely thrombocytopenic subjects or prepared from platelet-poor plasma of normal subjects do not retract, whereas clots containing normal platelets retract drastically to about 10% of their original volume, leaves little doubt as to the role of platelets in clot retraction. The first monograph on clot retraction published by Budtz-Olsen three decades ago (1951) still represents an excellent document on this subject and there have been several more recent reviews (Cohen and Lüscher, 1975; Behnke, 1976; Pollard et a., 1977; Cohen, 1982).

Keywords

Actin Filament Human Platelet Contractile Force Platelet Membrane Platelet Concentration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Isaac Cohen
    • 1
  1. 1.Atherosclerosis Program, Rehabilitation Institute of Chicago, and Department of Molecular BiologyNorthwestern University Medical SchoolChicagoUSA

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