Plasma folate, but not homocysteine, is associated with Apolipoprotein A1 levels in a non-fortified population

Lipids in Health and Disease

Research

Johan Hultdin¹  Elisabet Söderström²  Lars Weinehall³  Owe Johnson⁴  Mats Eliasson⁵  Jan-Håkan Jansson⁶  Göran Hallmans⁷ 

[1]Department of Medical Biosciences, Clinical Chemistry, Umeå University, 901 85, Umeå, Sweden

[2]Department of Medical Biosciences, Clinical Chemistry, Umeå University, 901 85, Umeå, Sweden

[3]Department of Clinical Chemistry, Sunderby Hospital, Luleå, Sweden

[4]Department of Public Health and Clinical Medicine, Epidemiology and Global Health, Umeå University, Umeå, Sweden

[5]Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden

[6]Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden

[7]Department of Medicine, Sunderby Hospital, Luleå, Sweden

[8]Department of Public Health and Clinical Medicine, Medicine, Umeå University, Umeå, Sweden

[9]Department of Medicine-Geriatric, Skellefteå County Hospital, Skellefteå, Sweden

[10]Department of Public Health and Clinical Medicine, Nutritional Research, Umeå University, Umeå, Sweden

关键词: Apolipoprotein;    Homocysteine;    Myocardial infarction;    Folate;    Epidemiology;   

DOI  :  10.1186/1476-511X-12-74

 received in 2012-12-13, accepted in 2013-05-15,  发布年份 2013

来源: Springer

【 摘 要 】

BackgroundElevated total plasma homocysteine (tHcy) in humans is associated with cardiovascular disease but prevention trials have failed to confirm causality. Reported reasons for this association have been that homocysteine and its major genetic determinant methylenetetrahydrofolate reductase (MTHFR) may have an effect on HDL and Apolipoprotein (Apo) A1 levels. We wanted to study if tHcy and its major determinants were correlated with Apo A1 levels in a large population without folate fortification.MethodsThis study was a prospective incident nested case-referent study within the Northern Sweden Health and Disease Study Cohort (NSHDSC), including 545 cases with first myocardial infarction and 1054 matched referents, median age at inclusion was 59 years. Univariate and multiple regression analyzes was used to study the associations between apolipoproteins Apo A1 and B, tHcy, folate and vitamin B12 in plasma as well as MTHFR polymorphisms 677C>T and 1298A>C.ResultsApo A1 and Apo B were strongly associated with the risk of a first myocardial infarction. tHcy was not associated with Apo A1 levels. Instead, folate had an independent positive association with Apo A1 levels in univariate and multiple regression models. The associations were seen in all men and women, among referents but not among cases. MTHFR polymorphisms had no clear effect on Apo A1 levels.ConclusionsAnalyzing over 1500 subjects we found an independent positive association between plasma folate (major dietary determinant of tHcy) and Apo A1 levels among those who later did not develop a first myocardial infarction. No association was seen between tHcy and Apo A1.

【 授权许可】

CC BY   
© Söderström et al.; licensee BioMed Central Ltd. 2013