Document Detail


Shear-stress-induced detachment of blood platelets from various surfaces.
MedLine Citation:
PMID:  9409312     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Platelet accumulation is the result of platelet adhesion and detachment. This study describes platelet detachment from fibronectin, laminin, fibrinogen, von Willebrand Factor (vWF), endothelial cell matrix (ECM), and collagen type III. Platelets adhered after 5 minutes' perfusion of anticoagulated whole blood at different shear rates were subjected to a brief flush of 1 minute with HEPES-buffered saline at varying shear stress. Platelets adhering to fibronectin and laminin were most easily detached. Fibrinogen and vWF had an intermediate position. Almost no detachment occurred from ECM and collagen type III. Dendritic platelets were removed more easily than spread platelets. When the shear rate at which adhesion had occurred was raised, platelet detachment decreased strongly. When the time period between adhesion and detachment was increased, platelet detachment also decreased. From these results, we conclude that detachment is determined initially by the shear rate at which platelets adhere, then by the time they are allowed to settle, then by the nature of the surface, and then by the degree of spreading. The shear optimum for a given adhesive protein is not determined by the detachment.
Authors:
Y P Wu; P G de Groot; J J Sixma
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Arteriosclerosis, thrombosis, and vascular biology     Volume:  17     ISSN:  1079-5642     ISO Abbreviation:  Arterioscler. Thromb. Vasc. Biol.     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1998-01-22     Completed Date:  1998-01-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9505803     Medline TA:  Arterioscler Thromb Vasc Biol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  3202-7     Citation Subset:  IM; S    
Affiliation:
Department of Hematology, University Hospital, Utrecht, The Netherlands.
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MeSH Terms
Descriptor/Qualifier:
Cell Size
Cells, Cultured
Endothelium, Vascular / cytology
Fibrinogen / metabolism
Fibronectins / metabolism
Humans
Laminin / metabolism
Perfusion
Platelet Adhesiveness*
Rheology
Stress, Mechanical*
Surface Properties
Umbilical Veins
von Willebrand Factor / metabolism
Chemical
Reg. No./Substance:
0/Fibronectins; 0/Laminin; 0/von Willebrand Factor; 9001-32-5/Fibrinogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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