In:
Epigenomics, Future Medicine Ltd, Vol. 5, No. 3 ( 2013-06), p. 271-281
Abstract:
Aim: We examined the association between birth weight and methylation in the imprinted IGF/H19 loci, the nonimprinted gene NR3C1 and repetitive element DNA (LINE-1 and Alu). Materials & methods: We collected umbilical cord venous blood from 219 infants born in Mexico City (Mexico) as part of a prospective birth cohort study and analyzed DNA methylation using pyrosequencing. Results: Birth weight was not associated with DNA methylation of the regions studied. One of the CpG dinucleotides in the IGF2 imprinting control region (ICR)1 includes a potential C–T SNP. Among individuals with an absence of methylation at this site, probably due to a paternally inherited T allele, birth weight was associated with mean methylation status of both IGF2 ICR1 and ICR2. However, this association would not have survived adjustment for multiple testing. Conclusion: While we did not detect an association between DNA methylation and birth weight, our study suggests a potential gene–epigene interaction between a T allele in the IGF2 ICR1 and methylation of ICRs of IGF2, and fetal growth.
Type of Medium:
Online Resource
ISSN:
1750-1911
,
1750-192X
Language:
English
Publisher:
Future Medicine Ltd
Publication Date:
2013
SSG:
12
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