| The missing link between atherosclerosis, inflammation and thrombosis: is it tissue factor? | |
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MedLine Citation:
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PMID: 21517734 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Acute thrombus formation on disrupted atherosclerotic plaques plays a key role during the onset of acute coronary syndromes. Lesion disruption facilitates the interaction between circulating blood and prothrombotic substances, such as tissue factor (TF) present within the atherosclerotic lesion. For a long period of time, vessel-wall TF has been considered the major determinant of thrombosis. However, this old dogma has been recently changed owing to the discovery of a different pool of TF that circulates in flowing blood (blood-borne TF). Several studies have shown that blood-borne TF circulates in different pools that are associated with selected blood cells, such as monocytes, granulocytes and platelets in cell-derived microparticles, and as a soluble protein generated by alternative splicing of its full-length mRNA. Recent studies have identified a hypercoagulable state associated with an increased circulating TF activity, leading to the concept of 'vulnerable blood'. Part of the blood-borne TF circulates in an 'inactive' form and it is required to be 'activated' to exert its thrombogenic potential. Certain pathological conditions, such as smoking, hyperlipidemia and diabetes, show a higher incidence of thrombotic complications. These conditions are also characterized by the presence of high levels of circulating TF activity. Recent evidence may also suggest that an increased circulating TF activity may potentiate the initial thrombogenic stimulus represented by vessel wall-associated TF, leading to the formation of larger and/or more stable thrombus, and thus more severe acute coronary syndromes. It has been reported that inflammation increases TF expression and activity by different cell types. On the other hand, TF upregulation may facilitate inflammation by enhancing intravascular fibrin deposition, formation of proinflammatory fragments of fibrin, and by generating coagulation proteases, including FVIIa, FXa and thrombin, that activate protease-activated receptors. Furthermore, the biology of TF is know known to be more complex than previously thought by the demonstration that this protein, apart from its known effects on blood coagulation, can also function as a signaling receptor. |
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Authors:
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Giovanni Cimmino; Chiara D'Amico; Valentina Vaccaro; Margherita D'Anna; Paolo Golino |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Expert review of cardiovascular therapy Volume: 9 ISSN: 1744-8344 ISO Abbreviation: Expert Rev Cardiovasc Ther Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-04-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101182328 Medline TA: Expert Rev Cardiovasc Ther Country: England |
Other Details:
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Languages: eng Pagination: 517-23 Citation Subset: IM |
Affiliation:
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Department of Cardio-Thoracic Sciences, Division of Cardiology, Second University of Naples, A.O.S. Sebastiano e S. Anna, Via Tescione, 81100 Caserta, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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