| Polyunsaturated fatty acid levels in blood during pregnancy, at birth and at 7 years: their associations with two common FADS2 polymorphisms. | |
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MedLine Citation:
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PMID: 22194195 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Minor alleles of polymorphisms in the fatty acid desaturase (FADS) gene cluster have been associated with reduced desaturation of the precursor polyunsaturated fatty acids (FAs) in small studies. The effects of these polymorphisms during progressive developmental stages have not previously been reported. Data from blood samples for 4342 pregnant women, 3343 umbilical cords reflecting the newborn's blood supply and 5240 children aged 7 years were analysed to investigate the associations of polyunsaturated FAs with rs1535 and rs174575-two polymorphisms in the FADS2 gene. Strong positive associations were observed between the minor G allele for these two markers, especially rs1535, and the substrates linoleic (18:2n-6) and α-linolenic (18:3n-3) acid. Negative associations were observed for the more highly unsaturated FAs such as arachidonic acid (20:4n-6), timnodonic acid (EPA, 20:5n-3) and cervonic acid (DHA, 22:6n-3). Bivariable genetic associations using the mother and child genotypes suggested that the newborn metabolism had a greater capacity to synthesize the more highly unsaturated omega-6 FAs than the more highly unsaturated omega-3 FAs. Nevertheless, despite the immaturity of the neonate, there was evidence that synthesis of DHA was occurring. However, by 7 years, no associations were observed with the maternal genotype. This suggested that the children's FA levels were related only to their own metabolism with no apparent lasting influences of the in utero environment. |
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Authors:
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Colin D Steer; Joseph R Hibbeln; Jean Golding; George Davey Smith |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2011-12-21 |
Journal Detail:
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Title: Human molecular genetics Volume: 21 ISSN: 1460-2083 ISO Abbreviation: Hum. Mol. Genet. Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-03-12 Completed Date: 2012-11-19 Revised Date: 2013-05-22 |
Medline Journal Info:
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Nlm Unique ID: 9208958 Medline TA: Hum Mol Genet Country: England |
Other Details:
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Languages: eng Pagination: 1504-12 Citation Subset: IM |
Affiliation:
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Centre for Child and Adolescent Health, School of Social and Community Medicine, University of Bristol, Barley House, Oakfield Grove, Bristol BS8 2BN, UK. colin.steer@bristol.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Child Fatty Acid Desaturases / genetics* Fatty Acids, Unsaturated / blood* Female Genotype Humans Infant, Newborn Male Polymorphism, Single Nucleotide* Pregnancy Sex Factors |
| Chemical | |
Reg. No./Substance:
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0/Fatty Acids, Unsaturated; EC 1.14.19.-/Fatty Acid Desaturases; EC 1.14.19.3/FADS2 protein, human |
| Comments/Corrections | |
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