| Tissue factor-induced thrombin generation in the fasting and postprandial state among elderly survivors of myocardial infarction. | |
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MedLine Citation:
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PMID: 19880163 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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INTRODUCTION: Tissue factor (TF)-induced thrombin generation (TG) ex vivo has been suggested to be an important method to assess thrombotic risk. No studies have investigated the impact of postprandial lipemia on TF-induced TG. Since myocardial infarction (MI) is associated with elevated postprandial levels of triglycerides, we hypothesized a differential impact of postprandial lipemia on coagulation activation in MI-patients and healthy controls. MATERIAL AND METHODS: Elderly survivors of acute MI (n=44) and healthy age-and sex matched controls (n=43) underwent a fat tolerance test (1 gram per kg body weight) to assess coagulation activation during postprandial lipemia. RESULTS: The incremental area under the curve (AUCi) for serum triglycerides was higher in MI-patients than in healthy age-and sex matched controls (5.64±0.52 mmol/L*h and 3.94±0.39 mmol/L*h, p=0.012) during the postprandial phase. Subsequent endogenous activation of coagulation, assessed by FVIIa and thrombin generation (F1+2), was similar among groups and not related to levels of triglycerides during the postprandial phase. Healthy individuals had a gradual decline in TF-induced thrombin generation ex vivo, assessed by endogenous thrombin potential (ETP) (AUCi=-542.4±71.4 nM*min*h, p<0.001), whereas MI-patients retained their ETP (AUCi=127.4±89.0 nM*min*h, p=0.47) in plasma during the postprandial phase (p for group difference=0.005). CONCLUSIONS: MI-patients had elevated postprandial lipemia and retained their ability for TF-induced TG in plasma ex vivo in the postprandial phase, whereas the capacity gradually decreased in healthy individuals. Further studies are warranted to reveal underlying mechanism(s) and clinical implications. |
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Authors:
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Samira Lekhal; Trond Børvik; Ellen Brodin; Arne Nordøy; John-Bjarne Hansen |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2009-10-31 |
Journal Detail:
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Title: Thrombosis research Volume: 126 ISSN: 1879-2472 ISO Abbreviation: Thromb. Res. Publication Date: 2010 Oct |
Date Detail:
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Created Date: 2010-09-27 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0326377 Medline TA: Thromb Res Country: United States |
Other Details:
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Languages: eng Pagination: 353-9 Citation Subset: IM |
Copyright Information:
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Copyright © 2009 Elsevier B.V. All rights reserved. |
Affiliation:
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Center for Atherothrombotic Research in Tromsø, Department of Medicine, Institute of Clinical Medicine, University of Tromsø, N-9037 Tromsø, Norway. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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