Maternal MTHFR polymorphisms and risk of spontaneous abortion.
SALUD PUBLICA DE MEXICO 2009;
51:19-25. [PMID:
19180309 DOI:
10.1590/s0036-36342009000100006]
[Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2008] [Accepted: 08/13/2008] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE
To asses the association between intake of folate and B vitamins and the incidence of spontaneous abortion (SA) according to the maternal methylenetetrahydrofolate reductase (MTHFR) polymorphisms (677 C>T and 1298 A>C).
MATERIAL AND METHODS
We conducted a nested case-control study within a perinatal cohort of women recruited in the state of Morelos, Mexico. Twenty-three women with SA were compared to 74 women whose pregnancy survived beyond week 20th. Intake of folate and B vitamins respectively, was estimated using a validated food frequency questionnaire. Maternal MTHFR polymorphisms were determined by PCR-RFLP and serum homocysteine levels by HPLC.
RESULTS
Carriers of MTHFR 677TT and 1298AC genotypes respectively showed an increased risk of SA (OR 677TT vs. CC/CT=5.0; 95% CI: 1.2, 20.9 and OR 1298 AC vs. AA=5.5; 95% CI: 1.1, 26.6).
CONCLUSIONS
Our results support the role of MTHFR polymorphisms as a risk factor for SA, regardless of dietary intake of B vitamins.
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