Vitamin C and the Risk of Preeclampsia— Results from Dietary Questionnaire and Plasma Assay
作者:
Cuilin Zhang,
Michelle Williams,
Irena King,
Edward Dashow,
Tanya Sorensen,
Ihunnaya Frederick,
Mary Thompson,
David Luthy,
期刊:
Epidemiology
(OVID Available online 2002)
卷期:
Volume 13,
issue 4
页码: 409-416
ISSN:1044-3983
年代: 2002
出版商: OVID
关键词: dietary vitamin C;ascorbic acid;maternal nutrition;preeclampsia
数据来源: OVID
摘要:
Background.Oxidative stress plays an important role in the pathophysiology of preeclampsia.Methods.In a case-control study of 109 women with preeclampsia and 259 controls, maternal dietary and plasma vitamin C in relation to preeclampsia risk were assessed. Dietary intake during the periconceptional period and pregnancy was ascertained using a semiquantitative food frequency questionnaire. Logistic regression procedures were used to derive odds ratios (OR) and 95% confidence intervals (CI). Plasma ascorbic acid was determined using automated enzymatic procedures.Results.After adjusting for maternal age, parity, prepregnancy body mass index, and energy intake, women who consumed <85 mg of vitamin C daily (below the recommended dietary allowance), as compared with others, experienced a doubling in preeclampsia risk (OR = 2.1; 95% CI = 1.1–3.9). The OR for extreme quartiles of plasma ascorbic acid (<42.5vs≥ 63.3 &mgr;mol/liter) was 2.3 (95% CI = 1.1–4.6). Compared with women in the highest quartile, those with plasma ascorbic acid <34.6 &mgr;mol/liter (lowest decile) experienced a 3.8-fold increased risk of preeclampsia (95% CI = 1.7–8.8).Conclusions.Our results, if confirmed, would suggest that current public health efforts to increase intake of fruits and vegetables rich in vitamin C and other antioxidants may reduce the risk of preeclampsia.
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