Document Detail


Dietary oleic and palmitic acids and postprandial factor VII in middle-aged men heterozygous and homozygous for factor VII R353Q polymorphism.
MedLine Citation:
PMID:  9989683     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: The R353Q genotype is a major determinant of factor VII coagulant (FVIIc) activity, which is associated with an increased risk of ischemic heart disease (IHD) and elevated plasma triacylglycerol concentrations. OBJECTIVE: The objectives were to 1) compare the effects of meals rich in palmitate or oleate with those of a meal low in fat on FVIIc in subjects with moderately elevated plasma nonfasting triacylglycerol concentrations and 2) determine whether the postprandial increase in FVIIc induced by dietary oleate differs in carriers of the Q allele. DESIGN: Fifty-two men aged >52 y with nonfasting plasma triacylglycerol concentrations between 2 and 5.5 mmol/L were randomly assigned to receive isoenergetic (5.1 MJ) meals providing 50 g high-oleate or high-palmitate oils or a low-fat meal providing 15 g high-oleate oil. In a second study, 17 men aged >52 y who were heterozygous for factor VII R353Q polymorphism were age-matched with subjects homozygous for the R allele and their responses to a 50-g, high-oleate meal were measured. RESULTS: FVIIc decreased by 11% after the low-fat meal. FVIIc increased by 9% and FVIIa (the activated form of FVII) increased by 55% after the high-oleate meal, whereas FVIIc did not change but FVIIa increased by 25% after the high-palmitate meal. Fasting FVIIc and FVIIa concentrations were 24% and 48% lower, respectively, in men with the RQ genotype than in men with the RR genotype but increased postprandially in both groups with no evidence of a genotype interaction. CONCLUSIONS: A high-fat meal rich in oleate increases FVIIa, whereas a low-fat meal does not, in men at high risk of IHD, independent of R353Q genotype.
Authors:
T A Sanders; T de Grassi; G J Miller; S E Humphries
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The American journal of clinical nutrition     Volume:  69     ISSN:  0002-9165     ISO Abbreviation:  Am. J. Clin. Nutr.     Publication Date:  1999 Feb 
Date Detail:
Created Date:  1999-02-26     Completed Date:  1999-02-26     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376027     Medline TA:  Am J Clin Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  220-5     Citation Subset:  AIM; IM    
Affiliation:
Nutrition Food and Health Research Centre, King's College London, United Kingdom. Tom.Sanders@kcl.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Dietary Fats / administration & dosage*
Factor VII / drug effects*,  genetics*
Factor VIIa / metabolism
Genotype
Heterozygote*
Homozygote*
Humans
Hypertriglyceridemia / blood
Male
Middle Aged
Oleic Acids / administration & dosage*
Palmitic Acids / administration & dosage*
Pilot Projects
Polymorphism, Genetic
Postprandial Period
Triglycerides / blood
Chemical
Reg. No./Substance:
0/Dietary Fats; 0/Oleic Acids; 0/Palmitic Acids; 0/Triglycerides; 9001-25-6/Factor VII; EC 3.4.21.21/Factor VIIa

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


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