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Rzehak, P. ; Thijs, C.* ; Standl, M. ; Mommers, M.* ; Glaser, C.* ; Jansen, E.* ; Klopp, N. ; Koppelman, G.H.* ; Singmann, P. ; Postma, D.S.* ; Sausenthaler, S. ; Dagnelie, P.C.* ; van den Brandt, P.A.* ; Koletzko, B.* ; Heinrich, J.

Variants of the FADS1 FADS2 gene cluster, blood levels of polyunsaturated fatty acids and eczema in children within the first 2 years of life.

PLoS ONE 5:e13261 (2010)
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BACKGROUND: Association of genetic-variants in the FADS1-FADS2-gene-cluster with fatty-acid-composition in blood of adult-populations is well established. We analyze this genetic-association in two children-cohort-studies. In addition, the association between variants in the FADS-gene-cluster and blood-fatty-acid-composition with eczema was studied. METHODS AND PRINCIPAL FINDINGS: Data of two population-based-birth-cohorts in The Netherlands and Germany (KOALA, LISA) were pooled (n = 879) and analyzed by (logistic) regression regarding the mutual influence of single-nucleotide-polymorphisms (SNPs) in the FADS-gene-cluster (rs174545, rs174546, rs174556, rs174561, rs3834458), on polyunsaturated fatty acids (PUFA) in blood and parent-reported eczema until the age of 2 years. All SNPs were highly significantly associated with all PUFAs except for alpha-linolenic-acid and eicosapentaenoic-acid, also after correction for multiple-testing. All tested SNPs showed associations with eczema in the LISA-study, but not in the KOALA-study. None of the PUFAs was significantly associated with eczema neither in the pooled nor in the analyses stratified by study-cohort. CONCLUSIONS AND SIGNIFICANCE: PUFA-composition in young children's blood is under strong control of the FADS-gene-cluster. Inconsistent results were found for a link between these genetic-variants with eczema. PUFA in blood was not associated with eczema. Thus the hypothesis of an inflammatory-link between PUFA and eczema by the metabolic-pathway of LC-PUFAs as precursors for inflammatory prostaglandins and leukotrienes could not be confirmed by these data.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords TOTAL IMMUNOGLOBULIN-E; KOALA BIRTH COHORT; FADS2; PHOSPHOLIPIDS; ASSOCIATION; DISEASES; MILK; IGE; INFLAMMATION; INFECTIONS
ISSN (print) / ISBN 1932-6203
Journal PLoS ONE
Quellenangaben Volume: 5, Issue: 10, Pages: , Article Number: e13261 Supplement: ,
Publisher Public Library of Science (PLoS)
Publishing Place Lawrence, Kan.
Non-patent literature Publications
Reviewing status Peer reviewed