Dietary Antioxidants and Atherosclerosis
Primary Purpose
Atherosclerosis, Cardiovascular Diseases, Heart Diseases
Status
Completed
Phase
Locations
Study Type
Observational
Intervention
Sponsored by
About this trial
This is an observational trial for Atherosclerosis
Eligibility Criteria
No eligibility criteria
Sites / Locations
Outcomes
Primary Outcome Measures
Secondary Outcome Measures
Full Information
NCT ID
NCT00005412
First Posted
May 25, 2000
Last Updated
May 12, 2016
Sponsor
National Heart, Lung, and Blood Institute (NHLBI)
1. Study Identification
Unique Protocol Identification Number
NCT00005412
Brief Title
Dietary Antioxidants and Atherosclerosis
Study Type
Observational
2. Study Status
Record Verification Date
June 2000
Overall Recruitment Status
Completed
Study Start Date
July 1992 (undefined)
Primary Completion Date
undefined (undefined)
Study Completion Date
June 1995 (Actual)
3. Sponsor/Collaborators
Name of the Sponsor
National Heart, Lung, and Blood Institute (NHLBI)
4. Oversight
5. Study Description
Brief Summary
To examine the role of dietary antioxidants in the etiology of atherosclerosis in both sexes and in whites and Blacks.
Detailed Description
BACKGROUND:
Atherosclerosis is this nation's leading cause of death for males and females, and Blacks and whites. There is mounting evidence that the oxidation of blood low density lipoproteins (LDL) plays an important role in the pathogenesis of this disease. LDL oxidation can be prevented by several dietary antioxidants, in particular, vitamin C, vitamin E, and beta-carotene. There is preliminary evidence that dietary antioxidants may slow the natural history of atherosclerosis in humans. Until now studies in this area have included predominantly white males with symptomatic disease.
DESIGN NARRATIVE:
The case-control study used data collected in ARIC to test the hypothesis that individuals in the lowest quintile of vitamin C, vitamin E and carotenoid consumption were at higher risk of asymptomatic atherosclerosis than those consuming greater amounts. Antioxidant intake was assessed by a validated food frequency questionnaire and a diet supplement survey. Cases were those with asymptomatic carotid artery atherosclerosis as determined by B-mode ultrasonography. Controls were those without evidence of carotid artery atherosclerosis. Secondary analyses determined which sex-race subgroups were at particular risk due to low antioxidant consumption.
The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Atherosclerosis, Cardiovascular Diseases, Heart Diseases, Carotid Stenosis
7. Study Design
10. Eligibility
Sex
Male
Maximum Age & Unit of Time
100 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
No eligibility criteria
12. IPD Sharing Statement
Citations:
PubMed Identifier
7554194
Citation
Kritchevsky SB, Shimakawa T, Tell GS, Dennis B, Carpenter M, Eckfeldt JH, Peacher-Ryan H, Heiss G. Dietary antioxidants and carotid artery wall thickness. The ARIC Study. Atherosclerosis Risk in Communities Study. Circulation. 1995 Oct 15;92(8):2142-50. doi: 10.1161/01.cir.92.8.2142.
Results Reference
background
PubMed Identifier
9734754
Citation
Kritchevsky SB, Tell GS, Shimakawa T, Dennis B, Li R, Kohlmeier L, Steere E, Heiss G. Provitamin A carotenoid intake and carotid artery plaques: the Atherosclerosis Risk in Communities Study. Am J Clin Nutr. 1998 Sep;68(3):726-33. doi: 10.1093/ajcn/68.3.726.
Results Reference
background
Learn more about this trial
Dietary Antioxidants and Atherosclerosis
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