Document Detail

677 C-->T polymorphism of the methylenetetrahydrofolate reductase gene and preeclampsia.
MedLine Citation:
PMID:  10908777     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To evaluate C to T substitution at nucleotide 677 of N(5), N(10)-methylenetetrahydrofolate reductase gene in women with prior preeclamptic or normotensive pregnancies. METHODS: Methylenetetrahydrofolate reductase genotypes were determined in 113 Finnish women with preeclamptic first pregnancies and 103 controls with one or more normotensive pregnancies, using polymerase chain reaction and restriction enzyme analysis. Preeclampsia was defined as severe in 100 women who fulfilled one or more of the subsequent criteria: systolic blood pressure (BP) at least 160 mmHg, diastolic BP at least 110 mmHg, or proteinuria at least 2 g per 24-hour urine collection. RESULTS: There were no significant differences in prevalences of the methylenetetrahydrofolate reductase genotypes (CC, CT, and TT) between groups (57%, 40%, and 3% in the preeclamptic group and 54%, 39%, and 7%, respectively, in controls). The frequency of the T677 allele was 0.23 in the preeclamptic group and 0.26 in the control group (difference 0.03; 95% confidence interval -0.08, 0.14; P =.51). Our sample had 60% power to detect a difference of the allele frequencies similar to that (0.12) reported previously. The result was similar when analysis was restricted to patients with severe preeclampsia (T677 allele frequency 0.22). CONCLUSION: A carrier status for the T677 allele of the methylenetetrahydrofolate reductase gene does not predispose to preeclampsia, at least in the Finnish population.
H Laivuori; R Kaaja; O Ylikorkala; T Hiltunen; K Kontula
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  96     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  2000 Aug 
Date Detail:
Created Date:  2000-08-24     Completed Date:  2000-08-24     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  277-80     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, Helsinki University Central Hospital, Helsinki, Finland.
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MeSH Terms
Amino Acid Substitution*
Case-Control Studies
DNA Primers
Gene Expression Regulation, Enzymologic*
Gene Frequency
Methylenetetrahydrofolate Reductase (NADPH2)
Oxidoreductases Acting on CH-NH Group Donors / genetics*
Polymerase Chain Reaction
Polymorphism, Genetic*
Pre-Eclampsia / enzymology,  genetics*
Reg. No./Substance:
0/DNA Primers; EC 1.5.-/Oxidoreductases Acting on CH-NH Group Donors; EC Reductase (NADPH2)

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