Media type: E-Article Title: Folic acid, methylation and neural tube closure in humans Contributor: Blom, Henk J. Published: Wiley, 2009 Published in: Birth Defects Research Part A: Clinical and Molecular Teratology, 85 (2009) 4, Seite 295-302 Language: English DOI: 10.1002/bdra.20581 ISSN: 1542-0760; 1542-0752 Origination: Footnote: Description: <jats:title>Abstract</jats:title><jats:p>This review provides a brief description of folate use and folic acid metabolism in relation to neural tube defect (NTD) risk. First, a meta‐analysis of reduction in NTD recurrence and occurrence risk with periconceptional folic acid supplementation is presented. Second, an overview of the complex folate metabolism is given. Third, SNPs for genes involved in folate and homocysteine metabolism that have been studied in relation to NTD riskare discussed. Fourth, the questions whether folate receptor autoantibodies or hampered methylation are mechanisms underlying NTDs are briefly discussed. Birth Defects Research (Part A), 2009. © 2009 Wiley‐Liss, Inc.</jats:p>