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Publication Detail

Title: Glutathione S-transferase P1, maternal smoking, and asthma in children: a haplotype-based analysis.

Authors: Li, Yu-Fen; Gauderman, W James; Conti, David V; Lin, Pi-Chu; Avol, Edward; Gilliland, Frank D

Published In Environ Health Perspect, (2008 Mar)

Abstract: Glutathione S-transferase P1 (GSTP1) plays a role in a spectrum of respiratory diseases; however, the effects of sequence variation across the entire locus in asthma pathogenesis have yet to be determined.This study was designed to investigate whether sequence variations in the GSTP1 coding and promoter regions are associated with asthma and wheezing outcomes and to determine whether variants affect susceptibility to maternal smoking.Four haplotype tagging SNPs were selected that accounted for 83% of the common haplotypic variation in GSTP1. The associations of GSTP1 variants with asthma and wheezing were assessed among white children in the Children's Health Study (CHS).The Ile105Val allele and a SNP in the upstream promoter region (SNP1: rs6591255, putative transcription factor 1 binding site) were associated with asthma and wheezing outcomes, an association observed in two cohorts of the CHS recruited in different years. Haplotypes that included both the promoter SNP (i.e., rs6591255) and the 105 Val variant were associated with an increased risk for asthma in non-Hispanic whites. Using SNP- and haplotype-based approaches, the effect of maternal smoking on wheezing was largest in children with the Ile105Val allele.Variants in both the promoter and coding regions of the GSTP1 locus may contribute to the occurrence of childhood asthma and wheezing and may increase susceptibility to adverse effects of tobacco-smoke exposure.

PubMed ID: 18335111 Exiting the NIEHS site

MeSH Terms: Adolescent; Age Factors; Asthma/chemically induced*; Child; Female; Glutathione S-Transferase pi/genetics*; Haplotypes; Humans; Male; Maternal Exposure/adverse effects*; Polymorphism, Single Nucleotide; Pregnancy; Prenatal Exposure Delayed Effects/genetics*; Promoter Regions, Genetic; Respiratory Sounds; Smoking/adverse effects*; Smoking/genetics; Tobacco Smoke Pollution/adverse effects*

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