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Folate-mediated one-carbon metabolism and its effect on female fertility and pregnancy viability
Department of Clinical Chemistry, Örebro University Hospital.
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2010 (English)In: Nutrition reviews, ISSN 0029-6643, E-ISSN 1753-4887, Vol. 68, no 2, 99-113 p.Article in journal (Refereed) Published
Abstract [en]

This review summarizes current knowledge of the effect of folate-mediated one-carbon metabolism and related genetic variants on female fertility and pregnancy viability. Insufficient folate status disrupts DNA methylation and integrity and increases blood homocysteine levels. Elevated levels of follicular fluid homocysteine correlate with oocyte immaturity and poor early embryo quality, while methylenetetrahydrofolate reductase (MTHFR) gene variants are associated with lower ovarian reserves, diminished response to follicular stimulation, and reduced chance of live birth after in vitro fertilization. Embryos carrying multiple MTHFR variants appear to have a selective disadvantage; however, the heterozygous MTHFR 677CT genotype in the mother and fetus provides the greatest chance for a viable pregnancy and live birth, possibly due to a favorable balance in folate cofactor distribution between methyl donor and nucleotide synthesis. The results of previous studies clearly emphasize that imbalances in folate metabolism and related gene variants may impair female fecundity as well as compromise implantation and the chance of a live birth.

Place, publisher, year, edition, pages
2010. Vol. 68, no 2, 99-113 p.
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Nutrition and Dietetics
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URN: urn:nbn:se:umu:diva-79810DOI: 10.1111/j.1753-4887.2009.00266.xISI: 000273998100003PubMedID: 20137055OAI: oai:DiVA.org:umu-79810DiVA: diva2:644924
Available from: 2013-09-02 Created: 2013-09-02 Last updated: 2017-12-06Bibliographically approved

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