Abstract:
BACKGROUND:Previously, observational studies have identified associations between higher levels of dietary-derived antioxidants and lower risk of coronary heart disease (CHD), whereas randomized clinical trials showed no reduction in CHD risk following antioxidant supplementation. OBJECTIVES:The purpose of this study was to investigate possible causal associations between dietary-derived circulating antioxidants and primary CHD risk using 2-sample Mendelian randomization (MR). METHODS:Single-nucleotide polymorphisms for circulating antioxidants (vitamins E and C, retinol, β-carotene, and lycopene), assessed as absolute levels and metabolites, were retrieved from the published data and were used as genetic instrumental variables. Summary statistics for gene-CHD associations were obtained from 3 databases: the CARDIoGRAMplusC4D consortium (60,801 cases; 123,504 control subjects), UK Biobank (25,306 cases; 462,011 control subjects), and FinnGen study (7,123 cases; 89,376 control subjects). For each exposure, MR analyses were performed per outcome database and were subsequently meta-analyzed. RESULTS:Among an analytic sample of 768,121 individuals (93,230 cases), genetically predicted circulating antioxidants were not causally associated with CHD risk. For absolute antioxidants, the odds ratio for CHD ranged between 0.94 (95% confidence interval [CI]: 0.63 to 1.41) for retinol and 1.03 (95% CI: 0.97 to 1.10) for β-carotene per unit increase in ln-transformed antioxidant values. For metabolites, the odds ratio ranged between 0.93 (95% CI: 0.82 to 1.06) for γ-tocopherol and 1.01 (95% CI: 0.95 to 1.08) for ascorbate per 10-fold increase in metabolite levels. CONCLUSIONS:Evidence from our study did not support a protective effect of genetic predisposition to high dietary-derived antioxidant levels on CHD risk. Therefore, it is unlikely that taking antioxidants to increase blood antioxidants levels will have a clinical benefit for the prevention of primary CHD.
journal_name
J Am Coll Cardioljournal_title
Journal of the American College of Cardiologyauthors
Luo J,le Cessie S,van Heemst D,Noordam Rdoi
10.1016/j.jacc.2020.10.048subject
Has Abstractpub_date
2021-01-05 00:00:00pages
45-54issue
1eissn
0735-1097issn
1558-3597pii
S0735-1097(20)37793-7journal_volume
77pub_type
杂志文章abstract:BACKGROUND:Early in the prevention and treatment of bioprosthetic valve thrombosis (BPVT), anticoagulation is effective, but the long-term outcome after BPVT is unknown. OBJECTIVES:The goal of this study was to assess the long-term outcomes of patients with BPVT treated with anticoagulation. METHODS:This analysis was...
journal_title:Journal of the American College of Cardiology
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abstract::In a multicenter study, 390 patients with sustained symptomatic ventricular tachycardia or ventricular fibrillation late after acute myocardial infarction were prospectively followed up to assess determinants of mortality and recurrence of arrhythmic events. Patients were given standard antiarrhythmic treatment, which...
journal_title:Journal of the American College of Cardiology
pub_type: 临床试验,杂志文章,多中心研究
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更新日期:2011-05-31 00:00:00
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journal_title:Journal of the American College of Cardiology
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2017-06-13 00:00:00
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更新日期:2006-09-05 00:00:00
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更新日期:1990-03-01 00:00:00
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更新日期:1989-04-01 00:00:00
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pub_type: 杂志文章
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更新日期:1987-11-01 00:00:00
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