Plasma ascorbate and vitamin E levels in Hong Kong Chinese

被引:15
作者
Benzie, IFF [1 ]
Janusz, ED
Strain, JJ
机构
[1] Hong Kong Polytech Univ, Dept Nursing & Hlth Sci, Kowloon, Peoples R China
[2] Royal Childrens Hosp, Dept Biochem, Melbourne, Vic, Australia
[3] Univ Ulster, No Ireland Ctr Diet & Hlth, Coleraine BT52 1SA, Londonderry, North Ireland
关键词
vitamin E; alpha tocopherol; ascorbate; vitamin C; Chinese; diet; CHD risk; age;
D O I
10.1038/sj.ejcn.1600586
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Objective: To describe fasting plasma total-and lipid standardised-vitamin E and ascorbate concentrations in Hong Kong Chinese subjects, and to explore age-, diet- and sex-related differences. Design: Observational study. Setting: Hong Kong. Subjects: One hundred and fifty randomly selected Chinese subjects. Interventions: Fasting plasma concentrations of ascorbate, total vitamin E and lipid standardised vitamin E (Vit E-LS expressed as mu mol vitamin E/mmol total cholesterol plus triglycerides) were measured. Results: Total vitamin E concentrations ranged from 6-53 mu mol/l (mean 24; s.d. 8.5), and Vit E-LS from 0.85-7.09 mu mol/mmol (mean 3.61; s.d. 1.19). Plasma Vit E-LS concentrations in women were higher (P = 0.02) than in men: mean (median) concentrations 3.82 (3.88) and 3.37 (3.28) mu mol/mmol, respectively. Vit E-LS concentrations in men decreased with age. Mean (s.d.) plasma ascorbate concentrations in men and women were 49.7 (14.0) and 51.6 (21.6) mu mol/l respectively, and did not show the significant age-and sex-differences reportedly found in Western studies. Conclusions: The hypothesis that Hong Kong Chinese, with their low risk of CHD, might have high Vit E-LS levels in fasting plasma is not supported by the results obtained. Moreover, results showed male-female differences and, in men, a previously unreported age-related decrease in plasma Vit E-LS concentration which cannot be accounted for by concomitant differences in dietary intake of vitamin E alone. Results also suggest that the age-and sex-differences in plasma ascorbate seen in Western populations can be avoided by increased vitamin C intake.
引用
收藏
页码:447 / 451
页数:5
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