Document Detail

Plasma levels of microparticle-associated tissue factor activity in patients with clinically suspected pulmonary embolism.
MedLine Citation:
PMID:  20708219     Owner:  NLM     Status:  In-Process    
INTRODUCTION: Microparticles (MPs) carrying active tissue factor (TF) have been detected in the plasma of cancer patients in particular in those presenting with acute deep vein thrombosis (DVT) or pulmonary embolism (PE). Experimental studies in mice have revealed that circulating MPs carrying TF contribute to thrombus formation.
AIM: To study whether unselected patients with an acute confirmed PE have elevated TF activity in the MP fraction (MP-TF activity).
MATERIALS AND METHODS: Plasma MP-TF activity was measured in 159 non-selected patients with clinically suspected PE and in 48 healthy controls as previously described. Blood was collected at time of inclusion. The diagnosis of acute PE was confirmed in 54 patients and excluded in 105 patients.
RESULTS: Median MP-TF activity in 159 patients with clinically suspected PE was 72 fM Xa/min [range 32-6657] fM Xa/min and higher than in healthy controls (66 [range 28-183] fM Xa/min; P<0.05). There was no significant difference (P=0.169) in MP-TF activity between patients with confirmed PE (median 84.5 fM Xa/min [range 36-2149]) and patients without PE (72 fM Xa/min [range 32-6657]) fM Xa/min). In the 159 patients with clinically suspected PE we observed in an exploratory analysis higher MP-TF activity levels in patients with active cancer (median 137 fM Xa/min [range 36-6657]) and cardiovascular disease (median 131.5 fM Xa/min [range 45-2149]) than in patients without these disorders (P=0.0004 and P=0.014, respectively).
CONCLUSION: In patients presenting with clinically suspected PE plasma MP-TF activity was not associated with confirmed PE.
P Garcia Rodriguez; H C J Eikenboom; M E T Tesselaar; M V Huisman; M Nijkeuter; S Osanto; R M Bertina
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-08-12
Journal Detail:
Title:  Thrombosis research     Volume:  126     ISSN:  1879-2472     ISO Abbreviation:  Thromb. Res.     Publication Date:  2010 Oct 
Date Detail:
Created Date:  2010-09-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0326377     Medline TA:  Thromb Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  345-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 Elsevier B.V. All rights reserved.
Department of Clinical Oncology, Leiden University Medical Center, Leiden, The Netherlands.
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