Verbal abilities in children of mothers with epilepsy: Association to maternal folate status.
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ABSTRACT: Objective
To examine the effect of maternal folic acid supplementation and maternal plasma folate and antiepileptic drug (AED) concentrations on language delay in AED-exposed children of mothers with epilepsy.Methods
Children of mothers with and without epilepsy enrolled from 1999 to 2008 in the Norwegian Mother and Child Cohort study were included. Information on medical history, AED use, and folic acid supplementation during pregnancy was collected from parent-completed questionnaires. Maternal plasma folate and maternal plasma and umbilical cord AED concentrations were measured in blood samples from gestational weeks 17 to 19 and immediately after birth, respectively. Language development at 18 and 36 months was evaluated by the Ages and Stages Questionnaires.Results
A total of 335 AED-exposed children of mothers with epilepsy and 104,222 children of mothers without epilepsy were surveyed. For those with no maternal periconceptional folic acid supplementation, the fully adjusted odds ratio (OR) for language delay in AED-exposed children compared to the controls at 18 months was 3.9 (95% confidence interval [CI] 1.9-7.8, p < 0.001) and at 36 months was 4.7 (95% CI 2.0-10.6, p < 0.001). When folic supplementation was used, the corresponding ORs for language delay were 1.7 (95% CI 1.2-2.6, p = 0.01) and 1.7 (95% CI 0.9-3.2, p = 0.13), respectively. The positive effect of folic acid supplement use on language delay in AED-exposed children was significant only when supplement was used in the period from 4 weeks before the pregnancy and until the end of the first trimester.Conclusion
Folic acid use early in pregnancy may have a preventive effect on language delay associated with in utero AED exposure.
SUBMITTER: Husebye ESN
PROVIDER: S-EPMC6133626 | biostudies-literature |
REPOSITORIES: biostudies-literature
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