过敏性
肺功能
哮喘
医学
维生素
肺
免疫学
维生素D与神经学
内科学
作者
Betina Heinsbæk Thuesen,Lise Lotte Nystrup Husemoen,Lars Ovesen,Torben Jørgensen,Mogens Fenger,G. Gilderson,Allan Linneberg
出处
期刊:Allergy
[Wiley]
日期:2010-04-26
卷期号:65 (11): 1446-1454
被引量:56
标识
DOI:10.1111/j.1398-9995.2010.02378.x
摘要
To cite this article: Thuesen BH, Husemoen LLN, Ovesen L, Jørgensen T, Fenger M, Gilderson G, Linneberg A. Atopy, asthma, and lung function in relation to folate and vitamin B 12 in adults. Allergy 2010; 65 : 1446–1454. Abstract Background: Recent studies suggested low serum folate and impaired folate metabolism as potential risk factors for development of asthma and atopic disease, but the results are inconsistent. The aim of this study was to investigate the relations of markers of folate and vitamin B 12 (B 12 ) deficiency with different phenotypes of asthma and atopy. Methods: A random sample of 6784 persons from a general population aged 30–60 years participated in a health examination in 1999–2001, and 4516 (66.6%) of those also participated in a follow‐up examination 5 years later. The examinations included spirometry, measurements of serum folate and B 12 , specific IgE to inhalant allergens, total IgE, and genotyping of the MTHFR‐C677T polymorphism – a genetic marker of impaired folate metabolism. Information about dietary intake of folate and B 12 , asthma diagnosis, and airway symptoms was obtained by questionnaires. Results: Low serum folate levels and the TT genotype of the MTHFR‐C677T polymorphism were associated with increased prevalence of self‐reported doctor‐diagnosed asthma [odds ratio (OR) 1.37, 95% confidence interval (CI) 1.05–1.79 and OR 1.52; 95% CI 1.12–2.06, respectively] and attacks of shortness of breath (OR 1.43, 95% CI 1.14–1.79 and OR 1.47; 95% CI: 1.14–1.91, respectively). We found no significant associations with lung function or atopic outcomes. Serum levels of B 12 and dietary intake of folate and B 12 were not associated with asthma or atopy. Conclusions: We found that two objective markers of folate deficiency were associated with self‐reported doctor‐diagnosed asthma and attacks of shortness of breath, but not with lung function or atopy.
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