Document Detail

Postprandial triglyceridemia and carotid atherosclerosis in middle-aged subjects.
MedLine Citation:
PMID:  1595099     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND PURPOSE: It has been suggested that a postprandial accumulation of triglyceride-rich lipoproteins promotes the development of atherosclerosis. This study was designed to test the hypothesis that postprandial lipemia is independently associated with intima-media thickening of the extracranial carotid arteries. METHODS: Forty-seven middle-aged, moderately hypercholesterolemic individuals were recruited for a 1-day study of the lipemic response to a standard high-fat test meal. The formula was fed at a dose of 65 g fat/m2 body surface area, after a 14-hour fast, and blood was obtained for triglyceride analysis hourly for 8 hours. A baseline lipid profile was obtained. Each subject underwent a carotid ultrasound examination. The extent of alimentary lipemia (peak triglyceride response) was correlated with the carotid artery wall thickness as measured by B-mode ultrasound. RESULTS: Univariate analyses indicated an inverse correlation between peak triglyceride response and high density lipoprotein cholesterol concentration and a direct correlation with male sex, baseline triglyceride concentration, background fat intake, and waist-to-hip ratio. Of these, the only variable that showed a univariate correlation with B-mode score was peak triglyceride response. Age and cigarette smoking were also correlated with B-mode score in univariate analyses. The correlation coefficient (r = 0.52) between peak triglyceride response to a fat-rich meal and B-mode score was significant (p less than 0.002) and remained so in multivariate analysis. Forward-selection stepwise regression resulted in the inclusion of only peak triglyceride response (p = 0.001) and smoking history (p = 0.005) as important predictors of carotid wall thickness in a linear model. CONCLUSIONS: The association between lipemic response and carotid wall thickness suggests that prolonged exposure of arterial wall cells to triglyceride-rich chylomicron remnants enhances the atherogenic process.
J E Ryu; G Howard; T E Craven; M G Bond; A P Hagaman; J R Crouse
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Stroke; a journal of cerebral circulation     Volume:  23     ISSN:  0039-2499     ISO Abbreviation:  Stroke     Publication Date:  1992 Jun 
Date Detail:
Created Date:  1992-06-30     Completed Date:  1992-06-30     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0235266     Medline TA:  Stroke     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  823-8     Citation Subset:  IM    
Department of Medicine, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, N.C. 27157-1047.
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MeSH Terms
Carotid Arteries / ultrasonography
Carotid Artery Diseases / blood*,  ultrasonography
Cholesterol / blood
Intracranial Arteriosclerosis / blood*,  ultrasonography
Lipids / blood
Middle Aged
Regression Analysis
Sex Characteristics
Triglycerides / blood*
Grant Support
Reg. No./Substance:
0/Lipids; 0/Triglycerides; 57-88-5/Cholesterol

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

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