Polymorphism of the methylenetetrahydrofolate reductase gene in mothers with offspring affected by folate-sensitive birth defects

Authors

Keywords:

congenital defects, folic acid, folate-sensitive neural tube defects, genetic polymorphism, genetic association studies.

Abstract

Introduction: The origin of congenital defects is influenced by environmental factors, such as folic acid intake deficit, and genetic factors, such as gene polymorphisms.

Objectives: To find the relation between the maternal C677T polymorphism of the methylenetetrahydrofolate reductase gene and the appearance of folate-sensitive congenital defects in the offspring.

Methods: A population-based observational case-control analytical study was performed. Ninety mothers with offsprings affected by five types of folate-sensitive congenital defects between 2013 and 2018 in Villa Clara province were included. They underwent genotyping of the C677T polymorphism of the methylenetetra gene.

Results: The frequency of the homozygous TT genotype was 0.14 and 0.06 in the mothers of affected cases and those of the control group, respectively. An association between maternal polymorphism polymorphism and congenital defects in the offspring, in the codominance model and the recessive model.

Conclusions: The higher frequency of the TT homozygous genotype, in mothers with affected offspring, is related to the decrease described for methylenetetrahydrofolate reductase enzyme activity in this genotype.

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Author Biographies

Noel Taboada Lugo, Universidad de Ciencias Médicas de Villa Clara

Doctor en Ciencias Médicas. Especialista de II Grado en Genética Clínica. Profesor Principal de Genética Médica de la Universidad de Ciencias Médicas de Villa Clara

Manuela Herrera Martínez, Universidad de Ciencias Médicas de Villa Clara

Doctora en Ciencias Médicas. Especialista de II Grado en Genética Médica. Unidad de Investigaciones Biomédicas de la Universidad de Ciencias Médicas de Villa Clara.

Raúl Pablo Ferreira Capote, Laboratorio Biología Molecular Centro Nacional de Genética.

Licenciado en Bioquímica. Laboratorio Biología Molecular Centro Nacional de Genética.

Luis Enrique Almaguer Mederos, Centro para la Rehabilitación e Investigación de las Ataxias Hereditarias

Licenciado en Biología. Doctor en Ciencias Biológicas Centro para la Rehabilitación e Investigación de las Ataxias Hereditarias

Teresa Collazo Mesa, Laboratorio Biología Molecular Centro Nacional de Genética.

Doctora en Ciencias Médicas. Licenciada en Bioquímica. Laboratorio Biología Molecular Centro Nacional de Genética.

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Published

2024-08-17

How to Cite

1.
Taboada Lugo N, Herrera Martínez M, Ferreira Capote RP, Almaguer Mederos LE, Collazo Mesa T. Polymorphism of the methylenetetrahydrofolate reductase gene in mothers with offspring affected by folate-sensitive birth defects. Rev Cubana Inv Bioméd [Internet]. 2024 Aug. 17 [cited 2025 Aug. 1];43. Available from: https://revibiomedica.sld.cu/index.php/ibi/article/view/2771

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ARTÍCULOS ORIGINALES