Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2002-7-11
pubmed:abstractText
Homozygosity for the C677T mutation in the methylenetetrahydrofolate reductase ( MTHFR) gene is a risk factor for neural tube defects (NTDs) in many populations, including Italians. Another common mutation on the MTHFR gene, A1298C, has also been described as a risk mutation. Furthermore, several studies have suggested that a defective methionine synthase ( MS) enzyme could be a critical defect in folate-related NTDs. An A-to-G transition at bp 2756 on the MS gene has also been reported. In this case-control study, we studied the frequencies of these two polymorphisms in 203 Italian probands with non-syndromic NTDs: 98 mothers, 67 fathers, and 210 control individuals. Although the A1298C polymorphism is common in the Italian population (0.25), the allelic frequency was significantly higher among NTD cases and their parents. Heterozygous patients and mothers have an odds ratio (OR) of 1.98 and 2.11, respectively. The risk associated with the 1298CC genotype was higher for cases (OR = 3.67), for fathers (OR = 3.28), and, above all, for mothers (OR = 6.23). The prevalence of the A2756G polymorphism of the MS gene was determined (0.15). No increased prevalence of the mutated G allele was found in NTD families. This study shows that the MTHFRA1298C polymorphism is a genetic determinant for NTD risk in Italy. No association between the MSA2756G and NTD susceptibility was found.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1434-5161
pubmed:author
pubmed:issnType
Print
pubmed:volume
47
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
319-24
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:12111380-5-Methyltetrahydrofolate-Homocysteine S-Methyltransferase, pubmed-meshheading:12111380-Adult, pubmed-meshheading:12111380-Alleles, pubmed-meshheading:12111380-Case-Control Studies, pubmed-meshheading:12111380-Child, pubmed-meshheading:12111380-Child, Preschool, pubmed-meshheading:12111380-DNA, pubmed-meshheading:12111380-DNA Mutational Analysis, pubmed-meshheading:12111380-DNA Primers, pubmed-meshheading:12111380-Female, pubmed-meshheading:12111380-Genotype, pubmed-meshheading:12111380-Humans, pubmed-meshheading:12111380-Infant, pubmed-meshheading:12111380-Infant, Newborn, pubmed-meshheading:12111380-Italy, pubmed-meshheading:12111380-Male, pubmed-meshheading:12111380-Neural Tube Defects, pubmed-meshheading:12111380-Odds Ratio, pubmed-meshheading:12111380-Polymerase Chain Reaction, pubmed-meshheading:12111380-Polymorphism, Genetic, pubmed-meshheading:12111380-Risk Factors
pubmed:year
2002
pubmed:articleTitle
Study of MTHFR and MS polymorphisms as risk factors for NTD in the Italian population.
pubmed:affiliation
Istituto G. Gaslini, Largo G. Gaslini, 5 16148 Genova, Italy.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't