Homocysteine, folate and vitamin B12 in patients with coronary heart disease

被引:12
作者
Genser, Dieter
Prachar, Herbert
Hauer, Rene
Halbmayer, Walter-Michael
Mlczoch, Johannes
Elmadfa, Ibrahim
机构
[1] Univ Vienna, Dept Nutr, Vienna, Austria
[2] Municipal Hosp Wien Lainz, Dept Internal Med & Cardiol 4, Vienna, Austria
[3] Municipal Hosp Wien Lainz, Cent Lab, Vienna, Austria
关键词
homocysteine; folate; vitamin B-12; coronary heart disease;
D O I
10.1159/000094632
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background/Aims: Homocysteine and possibly also folate and vitamin B-12 are involved in the pathogenesis of cardiovascular disease. We investigated the prevalence of hyper-homocysteinemia in patients with coronary heart disease (CHID), as well as folate and vitamin 812, the main nutritional factors determining the level of homocysteine. Methods: Patients with angiographically documented CHD were prospectively investigated (n = 315, 70% male, mean age 61 [range 36-811 years). Fasting total serum homocysteine was determined by high-performance liquid chromatography and fluorescence detection. Folic acid and vitamin B12 were measured with AxSYM (R) Systems. Results: Median homocysteine concentrations for homocysteine, folate and vitamin B12 were 12.8 mu mol/l, 6.8 ng/ml and 345 pg/ml, respectively. Homocysteine levels > 10 mu mol/l were found in 82% of men and 73% of women. In 19% of the patients serum folate was < 3 ng/ml and 22% of the patients had serum vitamin B12 values < 250 pg/ml. In a multivariate linear regression model, folate and vitamin B-12 showed significant negative correlations to homocysteine, explaining 5 and 3% of its variability. Age and creatinine were the most important determinants for serum homocysteine, contributing 12 and 7%, respectively. Discussion: The main determinants of total homocysteine in patients with CHD are higher age and increased creatinine. The association of lower levels of folate and vitamin B12 with higher levels of homocysteine may indicate poor dietary habits in these patients. Copyright (c) 2006 S. Karger AG, Basel.
引用
收藏
页码:413 / 419
页数:7
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