| Literature DB >> 26928318 |
Zuzana Drobná1, Elizabeth Martin2, Kyung Su Kim3, Lisa Smeester2, Paige Bommarito2, Marisela Rubio-Andrade4, Gonzalo G García-Vargas4, Miroslav Stýblo5, Fei Zou3, Rebecca C Fry6.
Abstract
Arsenic (+3 oxidation state) methyltransferase (AS3MT) is the key enzyme in the metabolism of inorganic arsenic (iAs). Polymorphisms of AS3MT influence adverse health effects in adults, but little is known about their role in iAs metabolism in pregnant women and infants. The relationships between seven single nucleotide polymorphisms (SNPs) in AS3MT and urinary concentrations of iAs and its methylated metabolites were assessed in mother-infant pairs of the Biomarkers of Exposure to ARsenic (BEAR) cohort. Maternal alleles for five of the seven SNPs (rs7085104, rs3740400, rs3740393, rs3740390, and rs1046778) were associated with urinary concentrations of iAs metabolites, and alleles for one SNP (rs3740393) were associated with birth outcomes/measures. These associations were strongly dependent upon the male sex of the fetus but independent of fetal genotype for AS3MT. These data highlight a potential sex-dependence of the relationships among maternal genotype, iAs metabolism and infant health outcomes.Entities:
Keywords: AS3MT; Arsenic; Birth outcomes; Genotype; Prenatal exposure
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Year: 2016 PMID: 26928318 PMCID: PMC4970429 DOI: 10.1016/j.reprotox.2016.02.017
Source DB: PubMed Journal: Reprod Toxicol ISSN: 0890-6238 Impact factor: 3.143