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Salud Publica Mex. 2009 Jan-Feb;51(1):19-25.

Maternal MTHFR polymorphisms and risk of spontaneous abortion.

Author information

1
National Institute of Public Health, Morelos, México.

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.

PMID:
19180309
PMCID:
PMC2890227
[Indexed for MEDLINE]
Free PMC Article

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